DNA and RNA are both made up of monomers called nucleotides. A nucleotide is the fundamental component of DNA and RNA.
It is made up of three components: a sugar molecule, a phosphate group, and a nitrogenous base. The sugar in DNA is deoxyribose, while in RNA it is ribose.
The phosphate group and the sugar form the backbone of the DNA or RNA molecule, and the nitrogenous base is attached to the sugar. There are four types of nitrogenous bases in DNA: adenine (A), thymine (T), guanine (G), and cytosine (C).
In RNA, the base uracil (U) is used in place of thymine. The sequence of these bases in the DNA or RNA provides the code for the synthesis of proteins.
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The sequences of contraction of the heart chamber isa. randomb. left chamber followed by the right chambersc. both atria followed by both ventriclesd. right atrium, right ventricle, left atrium, left ventricle
The sequences of contraction of the heart chamber is both atria followed by both ventricles.
coronary diastole
Blood passively flows into the atria as it travels through the superior, inferior, and pulmonary veins. Right now, there isn't an atrial contraction. Imagine it like the leftover drops that appear after you turn the water off.
The tricuspid and mitral valves are open at this time, allowing blood to passively flow from the atria into the ventricles. Due to the relaxed state of the ventricles, this phase is known as ventricular diastole.
Systole Atrial
Blood actively travels from the atria via the tricuspid and mitral valves and into the ventricles as a result of the atria contracting.
The atrial diastole
The inferior and superior vena cava's blood can once more fill the right atria, and the blood from the pulmonary veins can fill the left atria, after the atria contract.
Ventricular Systole
The pressure inside the ventricles rises as a result of the ventricles' vigorous contraction. The tricuspid and mitral valves close in response to this pressure increase, while the aortic and pulmonic valves expand.
In order to get the blood to the body and lungs, this contraction pushes it past the pulmonic and aortic valves. The pulmonary and aortic valves close when the pressure in the aorta and pulmonary arteries is greater than that in the ventricles.
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What structural polysaccharide is found in the cell walls of plants and is the most abundant carbohydrate on earth?
Cellulose is structural polysaccharide is found in the cell walls of plants and is the most abundant carbohydrate on earth.
Polysaccharides are important types of biomolecules. They are lengthy chains of carbohydrate molecules made up of several smaller monosaccharides. These intricate bio-macromolecules serve as a major energy source in animal cells and as a structural component in plant cells. Depending on the kind of monosaccharide, it might be a homopolysaccharide or even a heteropolysaccharide.
Polysaccharides serve as energy storage in organisms. Water cannot enter the molecules due to the existence of numerous hydrogen bonds, making them hydrophobic. They allow for variations in the concentration gradient, which regulates food and water intake by cells. Many polysaccharides generate glycolipids and glycoproteins by covalently bonding with lipids and proteins. A polysaccharide utilised for energy storage will provide easy access to the constituent monosaccharides, but a polysaccharide used for support will often consist of a lengthy chain of monosaccharides that create fibrous structures.
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the pouch which contains the testes is called the __________.
The epididymis and testicles are housed in the scrotum, an external pouch-like structure. The temperature of the testicles, which must be kept below body temperature in order to make sperm, is regulated in part by this pouch of skin.
Behind the male genitalia, the scrotum hangs like a bag. The testicles are held and shielded by it. There are several blood vessels and nerves as well. When the temperature drops, the Cremaster muscle draws the scrotum in closer the body while the Dartos muscle wrinkles the scrotum. When the body temperature rises, the Cremaster and Dartos muscles unwind, lowering the scrotum and removing wrinkles, respectively.
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What is true of older stars?
They tend to be brighter than younger stars. The orbital speed of an older star increases. The mass of a star increases with age. The star's amount of heavy elements decreases with age.
What is meant by older stars?The initial stars, known as Population III stars, started to form some 200 million years after the Big Bang. The oldest stars that have been observed are those that were born after the first stars went supernova, yet astronomers have not yet discovered stars in the Population III.One star cannot be used to estimate the age of another. Studying star clusters is the only reliable way we have to calculate the ages of stars. HD A metal-poor subgiant star in the constellation of Libra, close to the Milky Way Galaxy's boundary with Ophiuchus, 140283—also known as the Methuselah star—is located around 190 light years from the Earth. There is a 7.205 magnitude apparent. It ranks among the oldest stars ever discovered.To learn more about older stars refer to:
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What is a clade?
A. all species with the same homologous trait
B. a group of organisms with one common ancestor and all
its descendants in an unbroken line
C. when a new species splits off from its current one
D. the end groups on an evolutionary tree
Answer:
B. a group of organisms with one common ancestor and all its descendants in an unbroken line.
Explanation:
A clade is a taxonomic group of organisms consisting of a common ancestor and its descendants. The members of a clade share a common ancestry, and the concept of a clade is used to organize the evolutionary relationships between species and higher-level taxonomic groups. Clades can be visualized as branches on a tree-like diagram called a phylogenetic tree, with the common ancestor at the tree's base and the descendants branching out from there.
Answer:
B. a group of organisms with one common ancestor and all
its descendants in an unbroken line
An asphalt surface absorbs solar energy than a cement surface this difference is chiefly due to differences
An asphalt surface absorbs solar energy more than a cement surface, this difference is chiefly due to differences in color.
What is solar energy?Solar energy is the Sun's radiant heat and light. Solar architecture, solar thermal energy, and solar power to generate electricity are only a few of the technologies that may capture solar energy, which is particularly important for energy generation.
The emissivity (and adsorbability) of a dark surface is significantly greater than that of a light surface. An asphalt surface is almost black, whereas a cement surface is closer to white.
Therefore, as a result of differences in color, an asphalt surface absorbs solar radiation more than a cement surface.
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Which virus Cannot replicate itself?
Option 1 is Correct. The fact that Trojan horse programmes do not replicate themselves makes them extremely different from real viruses. Trojans include malicious code that, when activated, results in data loss or even theft.
In particular, they are bits of genetic material (DNA or RNA) encased in unique protein coatings known as capsids. Viruses cannot reproduce unless they are taken up by our body's cells. Once a virus leaves the body, its capsid begins to deteriorate, and the more deteriorated it is, the less chance it has of surviving.
Virus (computer virus) (computer virus) A computer virus is a piece of malicious software that spreads by copying itself to another programme, the boot region of a computer, or a document, altering how a computer functions. Viruses spread between systems when humans get involved in some way.
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Correct Question:
Which virus Cannot replicate itself?
1. Trojan horse programs
2. COVID-19.
3. Influenza (the flu)
4. Meningitis (there is also bacterial meningitis)
What is the appearance of the structure of a DNA strand ?
The structure of a DNA strand is a double helix, which is composed of two complementary strands of nucleotides that run in opposite directions. Each strand is composed of four types of nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
The nucleotides on one strand bond with their complementary nucleotides on the other strand through hydrogen bonds, forming the rungs of the ladder-like structure.
Adenine pairs with thymine, and guanine pairs with cytosine. The two strands are held together by these bonds, and the double helix twists around a central axis, forming a spiral shape. The double helix structure of DNA is stable and allows for the storage of genetic information and its replication.
The DNA double helix is often represented as a twisted ladder or spiral staircase with the nucleotides as the steps and the hydrogen bonds as the rungs of the ladder.
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Which organism forms a dorsal nerve cord in its embryonic stage?
butterfly
mosquito
frog
crab
frog is the organism forms a dorsal nerve cord in its embryonic stage. Animals in the phylum Chordata, which includes vertebrates like fish, amphibians, reptiles, birds
And mammals as well as certain invertebrates like tunicates and lancelets, develop a dorsal nerve cord during the embryonic stage.A frog develops a dorsal nerve cord during its embryonic stage, according to the options you offered.
Frogs are cold-blooded vertebrates that have a bone skeleton, a three-chambered heart, and moist, permeable skin that belong to the class amphibia. A dorsal nerve cord develops during the tadpole stage of its transformation into a frog.
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When mendel crossed the pollen from a plant with green pods with a plant with yellow seed pods, all of the offspring had green seed pods. This told him that fill in the blank text field 1 type here. Seed pods were dominant over fill in the blank text field 2 type here. Seed pods.
When mendel crossed the pollen from a plant with green pods with a plant with yellow seed pods, all of the offspring had green seed pods. This told him that fill in the blank text field 1 type here. Seed pods were dominant over fill in the blank text field 2 type here. Seed pods. True.
Let G be the allele for the green color of pods.
and the gene for yellow pod color is g
The real breeding parent's phenotype with green colored seeds is GG.
The phenotype of the actual breeding parent with yellow seeds is gg.
In Formula One,
GG is friends with gg
Gg - Offspring Genotype
Offspring phenotype - Green seed
Because the child carries both the alleles for green and yellow seeds, only green is expressed. This indicates that the green allele dominated the expression of the yellow allele, and hence green seed pods were dominant over yellow seed pods.
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PLEASE ANSWER ASAP!
At the end of meiosis I, how does the number of chromosomes in each new cell compare to the original number of chromosomes in the parent cell? (Is it diploid or haploid?)
Answer:
This separation means that each of the daughter cells that results from meiosis I will have half the number of chromosomes of the original parent cell after interphase.
Explanation:
what happens to the ovum during the follicular phase of the menstrual cycle?
Ovarian follicles mature throughout the follicular phase of the female menstrual cycle, preparing one of them for release during ovulation.
The follicular phase is also known as the proliferative phase because changes in the endometrium occur concurrently throughout this time.Your body gets ready for pregnancy through the menstrual cycle. Your hormones instruct your uterus to shed its lining if you are not pregnant. You start your menstruation now. The cycle restarts once your menstruation arrives.From the first day of your period until the first day of your subsequent period, a menstrual cycle is defined. Menstrual cycles typically last 28 to 29 days, however each woman's cycle is unique. Women in their 20s and 30s may have cycles that last 21 to 38 days, whereas teenagers may have cycles that last 45 days.
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Look at the slide from an oral presentation about fossils. A slide that reads, "fossils: how they help us understand the past. " there is a photo of a fossil. What should be added to this slide to make it more effective?.
Description of the fossil shown on the slide provide some background information on the specific fossil that is shown in the photo, such as what type of organism it belonged to, where it was found, and how old it is.
Explanation of how fossils help us understand the past: Describe how fossils provide evidence for the evolution of life, reconstruct past environments, or help to date the age of rocks.
Additional examples of fossils: Show more photos of different types of fossils and describe how each one contributes to our understanding of the past.
Comparison with modern organisms: Showing a photo of a modern organism that is related to the fossil, or a comparison of the fossil with a modern organism could help to illustrate how fossils can provide information on the evolution of life.
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Answer:
Description of the fossil shown on the slide provide some background information on the specific fossil that is shown in the photo, such as what type of organism it belonged to, where it was found, and how old it is.
Explanation:
What is a mature bone cell called?
Osteocytes are mature cells in the bone. When osteoblasts become osteocytes, they become mature bone cells. Calcium salts and a collagen matrix are produced and secreted by osteoblasts.
An osteoblast becomes trapped and changes into an osteocyte, the most common and mature type of bone cell when the area around it calcifies.
The primary type of bone cells is thought to be osteoblasts or lining cells. They respond to a variety of hormones to express a particular type of proteins on their membrane and control the flow of calcium into and out of the bone. Osteoclasts are different kinds of cells that are activated by these specialized proteins. Osteoblasts' main job is to make bones and keep the shape and integrity of bone tissue.
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which lettered item in the figure represents a tubulin dimer?
The lettered item in the figure represents a tubulin dimer is Choice E., oval e.
The alphabeta tubulin heterodimer is the structural subunit of microtubules, which can be cytoskeletal factors which can be vital for intracellular delivery and cell department in all eukaryotes. Tubulin is a fantastically conserved αβ dimeric protein gift and is vital for all eukaryotes. αβ-Tubulin dimers bring together into microtubules, dynamic polymers essential in a whole lot of functions, maximum noticeably, mitosis. Tubulin meeting and disassembly are connected to guanosine triphosphate hydrolysis. Tubulin is the protein that polymerizes into lengthy chains or filaments that shape microtubules, hole fibers which function a skeletal gadget for residing cells.
Thus, the correct option is choice E.
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Complete question:
Which lettered item in the figure above represents a tubulin dimer?
Choice A., oval a
Choice B., oval b
Choice C., oval c
Choice D., oval d
Choice E., oval e
What type of bonds hold the two strands of DNA together?
Harmful mutations are always quickly weeded out of a population.a. Trueb. False
Harmful mutations are always quickly weeded out of a population False .
Mutations that are harmful can result in genetic diseases or cancer. A genetic condition is an illness that results from a mutation in one or more genes. Cystic fibrosis is an example in humans. A single gene mutation causes the body to create thick, sticky mucus, which clogs the lungs and inhibits ducts in digestive organs.
Which mutation is the most dangerous?Deletion mutations, on the other hand, are the polar opposite of a point mutation. They entail the elimination of a base pair. Both of these mutations produce the most damaging sort of point mutation of all: the frameshift mutation.
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If the mice population is grown at 5% per year, how many years will it take for the population to double in size?
Answer: 20 years
Explanation:
Which two phases of meiosis are most responsible for the variation in gametes?
There are predominant levels chargeable for genetic variation withinside the gametes: recombination or crossing over and unbiased collection.
During crossing over, the sister chromatids change their genetic material , and unbiased collection incorporates the random segregation of chromosomes at some stage in cellular division. This version is because of unbiased collection and crossing-over at some stage in meiosis, and random union of gametes at some stage in fertilization. Genetic variation is created in meiosis with the aid of using critical mechanisms, specifically unbiased collection of gametes and genetic recombination thru crossing over. During meiosis I, the random orientation of the maternal and paternal chromosomes can result in variation. The trade of genetic records among homologous chromosomes additionally induces variation.
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Use the paragraph to answer the question.
The condition phenylketonuria, or PKU, is caused by the toxic buildup of the amino acid phenylalanine, which is found in all proteins and even some
artificial sweeteners. The build up in the blood affects nerve and brain development. PKU is caused by a mutation in a gene that affects the
breakdown of phenylalanine. When foods that contain phenylalanine are removed from the diet, the effects of PKU are reduced.
Which statement is true about expressed traits of PKU and environmental factors?
(1 point)
O Nerve and mental problems are an expressed trait of the PKU mutation regardless of environmental factors.
O Nerve and mental problems are a trait in PKU patients caused by the environmental factor of eating phenylalanine foods.
O Blood circulation problems are a trait in PKU patients caused by the environmental factor of eating phenylalanine foods.
O Blood circulation problems are an expressed trait of the PKU mutation regardless of environmental factors.
Answer: O Nerve and mental problems are a trait in PKU patients caused by the environmental factor of eating phenylalanine foods
Explanation:
Nerve and mental problems are a trait in PKU patients caused by the environmental factor of eating phenylalanine foods.
What is PKU?Phenylketonuria (PKU) is a genetic disorder that results in an inability to properly metabolize the amino acid phenylalanine.
This can lead to a toxic buildup of phenylalanine in the body, causing damage to the brain and nervous system. PKU is caused by a mutation in the gene that codes for the enzyme phenylalanine hydroxylase, which is responsible for breaking down phenylalanine. PKU is typically diagnosed at birth through newborn screening and can be treated by following a special diet that is low in phenylalanine.
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if you can't eat metal would that be not edible or not edible YET
How many branches represent the domains on the evolutionary tree of life?
A. 6
B. 12
C. 2
D. 1
E. 3
3 branches represent the domains on the evolutionary tree of life
. Correct option (E)
The tree of life is a basic motif in many mythological, religious, and philosophical traditions across the world. It is tied to the idea of the holy tree. The tree of life notion may have originated in Central Asia and been adopted by different civilizations such as Scandinavian mythology and Altai shamanism.
The tree of wisdom, which connects heaven and the underworld, and the tree of life, which connects all forms of creation, are both variants of the world tree or cosmic tree, and are shown as the same tree in numerous faiths and philosophies.
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explain how you know which attachment of a muscle is the origin and which attachment is the insertion.
Skeletal muscle attaches to bone (and possibly other muscles and tissues) at two or more points. A bond is called an origin if its location is a bone that remains immovable to the action. If the point is on a bone that moves during the action, it's called an insertion.
The origin is the attachment site that does not move during contraction, and the insertion is the attachment site that moves with muscle contraction. The insertion is usually distal or farther away and the origin is proximal or near the body to the insertion.
The origin is the less movable part of the muscle/tendon that is linked to the bone. The inset is the muscle's more flexible end, which is normally linked to the bone through tendons. The proximal end is what connects to less movable bone. The distal end is what connects to the more movable bone.
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What is the shape of Earth’s orbit around the sun?
Answer:
It is elliptical or slightly oval-shaped.
This means there is one point in the orbit where earth is closestto the sun, and another where earth is farthest from the sun.
Have a gud day.
order of insects also known as stoneflies crossword. True or False
True. Order of insects, often known as stoneflies, should have the following answer: PLECOPTERA
Stoneflies are members of the insect order Plecoptera. Globally, 3,500 species have been described,[1] and more are continually being found. The only continent where stoneflies are absent is Antarctica. [2] With close cousins found in the Carboniferous & Lower Permian geological periods and real stoneflies only known from slightly more recent fossils, stoneflies are thought to be one of the least primitive groups among Neoptera. But it appears that the beginning of their current diversity is in the Mesozoic. [3] Although the populations of Plecoptera are highly separate and can be found both in Southern and Northern Hemispheres, evolutionary evidence suggests that some species may have traversed the equator repeatedly before once more becoming geographically localised.
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in your ph.d. research, you use thin slices of brain tissue to study neuronal signaling. you attach an electrode to a single neuron, but cannot detect any activity. what is the most likely explanation?
The most likely explanation is The cell was cut off from dendrite inputs when the brain was sliced.
The long neural extensions known as dendrites are crucial in incorporating all of the information that is received from thousands of other cells in the human brain so that the cells can respond appropriately.
The dendrite is disconnected when an electrode is attached to a single neuron but there is no activity detected. We anticipated that the cells would die if all of the dendrites were removed. As a result, they would no longer be able to receive information.
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pick the best match answer the allele that does not contribute to the phenotype of the heterozygote answer the cross of an individual of ambiguous genotype with a homozygous recessive individual answer an individual with two different alleles of a gene answer the heritable entity that determines a characteristic answer the alleles an individual has answer the separation of the two alleles of a gene into different gametes answer offspring of the p generation
Pick the best match answer.
The recessive allele - the allele that does not contribute to the phenotype of the heterozygote. Testcross - the cross of an individual of ambiguous genotype with a homozygous recessive individual Heterozygote - an individual with two different alleles of a gene.Gene - the heritable entity that determines a characteristic.Two alleles - the alleles an individual has.Segregation - the separation of the two alleles of a gene into different gametes.F1 - offspring of the p generation.There are several terms in genetic material that we must understand, one of which is,
P is a term from Parental which means parent.F is an abbreviation of the word Filial which means offspring. First-generation F1 and second-generation F2.Phenotype is traits that we can observe shape, size, color, blood group, and others.Genotype is the unobservable genetic makeup of an individual or traits determined by genes. For example, HH and Hh.Alleles are alternative forms of a gene that occupy the same locus or location on the chromosome of its homologous partner. The H allele has an h allele, so the gene and allele are written HH or Hh.Homozygous are individuals who have the same gene and allele pair. For example, HH or hh are called homozygous individuals.Heterozygous is an individual who has the different gene and allele pairs. One dominant and one recessive.Dominant is the trait that wins, namely the trait that appears in the phenotypic offspring. The dominant trait is symbolized by an uppercase letter.Receive is a trait that loses, that is, a trait that does not show up in its phenotypic offspring. Recessive traits are represented by the lowercase letter of the dominant trait.Learn more about genetic material at https://brainly.com/question/996038.
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when are cyclins present inside the cell during the cell cycle?
Cyclin A, the founding member of the cyclin own circle of relatives of proteins, starts off evolved to build up in cells in overdue G1 segment, peaks in mid-G2 segment, and disappears absolutely at the start of mitosis.
Cyclins are the regulatory proteins, which manipulate the development of the cell cycle. Cyclin additionally performs a vital function in cell department with the aid of using binding with the cyclin-structured kinases. Mitosis is the technique wherein the figure cell copies the genetic cloth and gives you it to the daughter cells formed. Cyclin withinside the cell cycle regulates the development of the cell cycle with the aid of using binding with CDKS. These complexes of various CDKS are formed, which play vital roles in extraordinary tiers of the cell cycle. For instance, the cyclins from the D-kind own circle of relatives modify the activation of CDKS complexes and permit the cell to development withinside the G1 segment of the cell cycle. Thus, cyclins are the regulatory proteins that withinside the activated shape of CDKS development the cell cycle.
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Using realistic scientific
examples how would you
improve check out at
stores.
Answer:
One way to improve check out at stores using realistic scientific examples is through the use of radio-frequency identification (RFID) technology. Another example would be the use of computer vision and machine learning to automate the check-out process.
Explanation:
1. RFID technology: RFID uses radio waves to communicate between a tag or label attached to an item and a reader device. This technology can be used in retail stores to automatically track and identify items as they are brought to the check-out counter, without the need for barcode scanning. This can significantly speed up the check-out process and reduce the possibility of errors.
2. Computer vision and machine learning: Computer vision is the ability of machines to interpret and understand visual information, and machine learning is the ability of a computer to learn and make predictions based on data. By using computer vision and machine learning, it is possible to create a system that can automatically detect and identify items as they are placed in a shopping cart or bag. This eliminates the need for customers to manually scan items at the check-out counter, speeding up the process and reducing the potential for errors.
Both RFID and computer vision with machine learning could improve the check-out process by automating certain tasks and reducing the potential for human error. These technologies have been widely used in many fields, and it is a realistic solution to improve check out process in the stores.
what embryos are used as the source for embryonic stem cells
The embryos being utilized in embryonic stem cellular studies come from eggs that have been fertilized at in vitro fertilization clinics however by no means implanted in women's uteruses.
The stem cells are donated with knowledgeable consent from donors. Embryos used as a supply of embryonic stem cells originate from blastocysts which are three to five days old. During the blastocyst stage, the cells are pluripotent, which means they could regenerate into nearly each form of cell. Human embryonic stem cells are derived from the internal cellular mass of the human blastocyst. Presumably normal (frozen/thawed) human preimplantation embryos that continue to be unused following assisted duplicate approaches have supplied the primary supply of blastocysts for stem cell derivation.
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