B. mutation the following could increase genetic variation. The main cause of genetic variation in a population is the process of mutation.
The term "mutation" refers to a random alteration of the DNA sequence that can take place during DNA replication or repair. Mutations can affect a single nucleotide base pair, longer DNA segments, the genetic code, or both. A population may develop new traits or features as a result of some mutations, which may be advantageous, neutral, or destructive.
By reducing the population's genetic variety and size, the bottleneck effect, founder effect, and genetic drift all have the potential to lower genetic variance in a population.
E. Genetic variety is not created by natural selection; rather, it can alter the relative frequency of various genetic variations in a population. It is a procedure that makes use of genetic variants that already exist.
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Jessica recently learned that she is pregnant. She knows that fertilization normally takes place in the oviduct. Which structure and functions in this manner?
Jessica recently learned that she is pregnant. She knows that fertilization normally takes place in the oviduct. fallopian tubes are the structure and functions in this manner.
the paired fallopian tubes, frequently appertained to as uterine tubes, oviducts, or salpinges( plural salpinx), extend from the uterus to the ovaries. A element of the womanish reproductive system are the fallopian tubes. They're simply known as oviducts in other mammals. With an average length of 10 to 14 cm and an surface periphery of 1 cm, each tube is a muscular concave organ. It's divided into four distinct factors, including the intramural portion, island, ampulla, and infundibulum with affiliated fimbriae. Each tube has two openings the closest one, which opens to the uterus, and the furthest one, which opens to the belly.
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Which specific lymphatic structure protects the small intestine from pathogens?
Peyer's patches are clusters of lymphoid follicles in your small intestine's mucus membrane. Lymphoid follicles are lymphatic system structures that are comparable to lymph nodes.
The lymphatic system, also known as the lymphoid system, is a vertebrate organ system that is part of the immune system and works in tandem with the circulatory system.
A wide network of lymphatic veins, lymph nodes, lymphatic or lymphoid organs, and lymphoid tissues comprise it. The vessels transport lymph (the Latin term lympha relates to the deity of fresh water, "Lympha") back to the heart for re-circulation.
The lymphatic system, unlike the circulatory system, is an open system. Capillary filtration, which removes plasma from the blood, processes an average of 20 litres of blood every day in the human circulatory system.
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which pair of chickens should a farmer breed to produce larger chickens?
Answer: (Large hen, large rooster.)
Explanation: (Why: Large parents should be bred to produce larger chickens)
wheezing and shortness of breath are symptoms of what?
Answer:
Asthma and chronic obstructive pulmonary disease (COPD)
Explanation:
Inflammation and narrowing of the airway in any location, from your throat out into your lungs, can result in wheezing. Both diseases cause narrowing and spasms (bronchospasms) in the small airways of your lungs.
What is a silent mutagen?
Silent mutagens are substances that can cause silent mutations.
Mutations are changes in genetic material both at the gene and chromosome levels during DNA replication that can be passed on to their offspring. Mutations can be caused by internal or external factors that cause changes in the protein produced.
Silent mutagens are materials or factors that resemble nitrogenous bases that can cause silent mutations. Silent mutations occur due to codon changes caused by mutagens that do not cause amino acid changes. This mutation occurs due to a change in the base pair of the gene at position 3 of the codon resulting in a change in one genetic code but does not result in a change in the amino acid.
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The Golgi apparatus helps to maintain cellular homeostasis by
The Golgi apparatus helps to maintain cellular homeostasis by processing and transporting different proteins and lipids required to be part of the cell in the endomembrane system.
What is the relative importance of the Golgi apparatus in the cell?T the relative importance of the Golgi apparatus in the cell is based on the fact that it maintains the internal equilibrium by synthesizing and producing different biomolecules.
Therefore, with this data, we can see that the relative importance of the Golgi apparatus in the cell is cemented in the transport and processing of lipids and proteins.
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Some bacteria can create an _____________ to protect against harsh conditions.
Answer:
Endospore
Explanation:
Some bacteria create spores to protect themselves
what is the most common method of tree harvesting for an even-aged forest stand?
The most common method of tree harvesting for an even-aged forest stand is Through clearcut harvesting of trees and subsequent planting.
An even-aged stand is one in which the range of ages of the trees in a stand does not vary by more than about 20%. The best example of even-aged stands can be found in plantation forests, which frequently originate from seedlings or clones of the same parents. Because they were all planted at the same time, the trees are all the same age. As a result, clearcut harvesting of trees and subsequent planting can result in even-aged stands. An even-aged stand can be made from shelterwood or seed tree harvests in which only a small amount of the overstory is left to provide seed for the new stand.
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Can light cause the butterfly’s wings to glow? Why or why not? Does it matter what type of light Alika shines on the butterfly?
Answer:
NO, light can't cause a butterfly's wings to glow (sadly)
Explanation:
Butterflys have wings (obviously) which contain of diffrent colors and for signals such as warnings, attractions, and disguise. They are attreacted to light but they don't absorbe it. If they did the intention of the wings features would not work for there survival.
90 of digestion and absorption of nutrients occur in which organ?
Answer:
Hi!
It is in the small intestine that most of the digestion of nutrients takes place, as well as their absorption, that is, the assimilation of nutritive substances.
I hope this helped you, good studies!
multicellular eukaryotes that live all over the planet and consume food is called
Animals are eukaryotic and multicellular, living everywhere on the globe and nourishing themselves. They are the most complex organisms known and have developed over millions of years to inhabit several different habitats.
Animals possess distinctive features such as the capacity to move, ingest and digest food, reproduce, and respond to external stimuli. Furthermore, they are able to learn and possess refined senses. Animals can be divided into two major categories: vertebrates and invertebrates, depending on whether or not they have a backbone. Vertebrates feature a backbone, while invertebrates don't.
Animals are pivotal to their environment, performing pollination, seed dispersal, and nutrient cycling, while also serving as a significant food source for humans. Additionally, they can be kept as pets, granting comfort and emotional support.
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example of a genetic factor for an animal (just an example not what it is )
Answer:
An example of a genetic factor for an animal could be a mutation in a gene that affects the animal's coat color. For example, the agouti gene in rabbits is responsible for the color of their fur, and mutations in this gene can cause a variety of colors ranging from white to black. Other genetic factors for animals can include eye color, body size, and even behavior.
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correctly label the following structures related to the position of the heart in the thorax.
Where the Heart Is. The human heart is situated medially between both the lungs in the thoracic cavity.
The tough outer fiber pericardium and the interior serous pericardium make up the pericardium, which is properly translated as "around the heart." The heart is protected and keeps its location in the thorax by the fibrous pericardium, which is formed of strong, dense connective tissue. The mediastinum—a region of the thoracic cavity medially between the lungs—is home to the human heart. Between the lungs is the mediastinum, which houses the heart. Organs and tissues that are involved in the immune (thymus), cardiovascular (heart, pericardium, large vessels, lymphatics), anxious (vagus nerve, sympathetic string, phrenic nerve, glossopharyngeal nerve), respiratory (lungs, tracheae, trachea, pleura), and digestive (oesophagus) systems are found in the thoracic cavity. The osteocartilaginous structure is the thoracic cage, sometimes referred to as the rib cage.
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what is the major function of chloroplasts? what is the major function of chloroplasts? to store water to degrade cellular waste products to manufacture proteins to allow for photosynthesis to occur
Allowing for photosynthesis to take place is the chloroplasts' primary purpose. In order to support plant development and crop productivity, chloroplasts release oxygen and produce energy through photosynthesis.
What two purposes do chloroplasts serve?Organelles found in plant cells called chloroplasts use the photosynthetic process to transform light energy into chemical energy that is relatively stable. They maintain life on Earth by doing this. Various metabolic processes, such as the synthesis of fatty acids and membrane lipids, are also provided for plant cells by chloroplasts.In order to support plant development and crop productivity, chloroplasts release oxygen and produce energy through photosynthesis. Therefore, amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites are only a few of the active substances that are biosynthesized by chloroplasts [9].Allowing for photosynthesis to take place is the chloroplasts' primary purpose. In order to support plant development and crop productivity, chloroplasts release oxygen and produce energy through photosynthesis.To learn more about chloroplasts refer to:
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What is used as a template for the construction of a new RNA molecule?
DNA strands
The process of Transcription begins with the opening and unwinding of a small portion of the DNA double helix to expose the bases on each DNA strand. One of the two strands of the DNA double helix then acts as a template for the synthesis of an RNA molecule. Transcription is the process by which DNA sequences in genes are copied to make RNA.the process ends in the process called termination which is dependent on the sequence of the RNA created.Three different types of RNA polymerase exist in eukaryotic cells, whereas bacteria have only one. In eukaryotes, RNA pol I transcribes the genes that encode most of the ribosomal RNAs (rRNAs), and RNA pol III transcribes the genes for one small rRNA, plus the transfer RNAs that play a key role in the translation process, as well as other small regulatory RNA molecules. Thus, it is RNA pol II that transcribes the messenger RNAs, which serve as the templates for production of protein molecules
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you wish to obtain a pure mitochondria sample from lysed cells. the best way to obtain this sample would be
The best way to obtain a pure mitochondria sample from lysed cells is to perform differential centrifugation.
This is a multi-step process in which the lysed cells are first spun at a low speed to remove large cellular debris. The supernatant is then spun at a higher speed, which causes the mitochondria to pellet due to their heavier weight.
The resulting pellet can then be washed and re-suspended in a suitable buffer to obtain a pure mitochondria sample. Additionally, other purification methods such as sucrose gradient centrifugation or sucrose cushion centrifugation can also be used to obtain a pure mitochondria sample, but differential centrifugation is the most commonly used method.
It is important to obtain a pure mitochondria sample for downstream experiments such as enzymatic assays, protein analysis, and gene expression analysis, as contaminants from other cellular components can interfere with the results.
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Which characteristic of viruses prevents them from being used as evidence to support cell theory?
a. Viruses do not have nuclei.
b. Viruses cannot move by themselves.
c. Viruses replicate only inside host cells.
d. Viruses can have glycoproteins on their surfaces.
Answer:
The characteristic of viruses that prevents them from being used as evidence to support cell theory is that viruses do not have nuclei. Viruses are not considered living organisms, as they cannot independently replicate, do not have a metabolism, and do not have a nucleus - a key component of cells. While viruses can have glycoproteins on their surfaces, this does not necessarily provide evidence to support cell theory, as viruses are not considered to be cells.
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Why are they called frameshift mutation?
They are called frameshift mutations because these mutations result in a protein that doesn't make sense.
Mutations are changes in genetic material both at the gene and chromosome levels during DNA replication that can be passed on to offspring. Several types of mutations that occur in chromosomes, namely mutations that occur due to deleted and wasted chromosomes or are called deletions. While mutations due to the addition of nucleotides to the chromosome chain are called insertions.
Frameshift mutations occur due to the insertion or deletion of one or more new nucleotide bases. This causes a change in the nucleotide base sequence resulting in a nonsensical protein. This is cause each mRNA will be read out of the reading frame after the addition or insertion of a nucleotide base.
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Which type of reproduction produces offspring that are clones with the exact same DNA as the parents?
Asexual reproduction produces offspring that are clones with the exact same DNA as the parents.
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in number of chromosomes. Asexual reproduction involves mitosis instead of meiosis. This type of reproduction is observed in both multicellular and unicellular organisms.
In the process, of asexual reproduction, only one parent is involved and there is no fusion of male and female gametes. Thus, the offspring produced are morphologically and genetically similar to parents. Therefore, they are called clones.
In asexual reproduction, the offspring are produced which are exact copies of their parent. Animals reproduce in two ways, sexually i.e., two parents are involved and asexually i.e., only one individual contributes genetic material.
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the point of __________ is attached to the bone that will be moving.
The point of origin is attached to the bone that will be moving.
In anatomy, the point of origin refers to the location on a bone or joint where a muscle or group of muscles originate, or begin. It is the place where the muscle fibers attach to the bone and it's also the fixed or stationary end of a muscle. When a muscle contracts, it pulls on the bone it's attached to, causing movement at a joint. The point of origin of a muscle is often considered to be the proximal attachment of the muscle, which means the attachment closest to the center of the body.
In contrast, the point of insertion is the location on a bone or joint where a muscle or group of muscles insert or attach, it's the place where the muscle fibers attach to the bone and it's also the mobile or movable end of a muscle. Understanding the points of origin and insertion is important in understanding how muscles and bones work together to produce movement and generate force.
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if these genes were far apart on the bacterial chromosome, what would that mean for overall efficiency of breaking down lactose?
If these genes are far apart on the bacterial chromosome, what this means for the overall efficiency of lactose breakdown is that they will never be co-transduced because bacteriophages cannot physically package the DNA fragments.
Transduction is the recombination of genes between bacterial cells using phage viruses. Phage viruses that have infected a bacterium during the lytic or lysogenetic cycle will contain bacterial DNA particles.
Transduction occurs when a bacterium obtains DNA from a bacteriophage virus that infects it. The virus will inject genetic material into the bacteria. As a result, the viral DNA will unite with the host bacterial DNA. Not all of the bacteria injected with the DNA virus will die.
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Which statement does not represent an example of bioremediation?
1) Duckweed removes heavy metals from ponds and lakes.
2) Bacteria break down hydrocarbons in oil.
3) Ragweed plants remove lead from the ground around factory sites.
4) Ladybugs eliminate insect pests from plants.
The statement that does not represent an example of bioremediation would be the one that says that ladybugs eliminate insect pests from plants. Option 4.
What is bioremediation?Bioremediation is a process whereby living organisms are used to break down or remove pollutants from the environment. The living organism can be plants, animals, microbes, or a combination of 2 or more of the organisms.
In other words, duckweed removing heavy metals from ponds and lakes is an example of bioremediation. The duckweed is a living organism and the heavy metals are pollutants.
Bacteria breaking down hydrocarbons in oil is also an example of bioremediation. The bacteria is the living organism while the oil is the pollutant. The same is also applicable to ragweed plants removing lead.
The only option that does not represent bioremediation is ladybugs eliminating insect pests from plants.
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The statement that does not represent an example of bioremediation is as follows: Ladybugs eliminate insect pests from plants (option 4).
What is bioremediation?Bioremediation is the use of biological organisms, usually microorganisms, to remove contaminants, especially from polluted water.
Microorganisms like bacteria and fungi are the main role player when it comes to executing the process of bioremediation. Bacteria are the most crucial microbes in this process as they break down the waste into nutrients and organic matter.
Therefore, it can be said that option 4 is not among the examples that represents bioremediation.
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homo sapiens is an example of an organism that can produce fertile offspring
The statement is true that homo sapiens is an example of an organism that can produce fertile offspring.
This remark indicates that individuals of the similar species are compatible just to conceive an offspring collectively. According to this definition of species, all currently existing humans are members of the same species, Homo sapiens. There is a chance that all humans could interbreed, but not with people who belong to another species.
Today's inhabitants are all members of the Homo sapiens species. We have only lately emerged, yet thanks to sophisticated technology and society, we have indeed been able to colonise many various settings and expand over the globe.
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Put the things in the correct order to form a good chain.fungus fish organic matter and shrimp
Food chain refers to the energy source diagram. Food is a continuous network of links to food web which starts from producers(plants) to decomposers(fungi). Inorder to form a good chain check the producers,mediators (pass the link to next one who eats)and decomposers.
Therefore ,correct order to form a good chain.
Organic matter →Fungus→Shrimp→Fish
The above food web is a good chain. Food chain also illustrates how one organisms eats the followed other organisms what they eat. Organic matter defines alive or dead organism in the water which contains mostly carbon matter.Shrimp is the newly born fishes.
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if a faster heartbeat means that more vital substances can be delivered to cells, why does the heart not naturally beat as fast when a person is resting as when they are jumping?
Because of stress, exercise, medicine, or, in rare instances, a medical issue, the heart may not beat as quickly while a person is at rest as it does when they are leaping. While usually innocuous, heart palpitations can be unnerving.
Why does my heartbeat while I'm resting seem so rapid?They may be brought on by stress, physical activity, medication, or, in rare cases, a medical problem. Heart palpitations are normally harmless, though they can be unsettling. Heart palpitations are a rare sign of a more serious heart disease, such as an arrhythmia, which may need medical attention.By increasing the amount of blood that can reach the tissues and cells to distribute the required nutrients, such as oxygen and glucose, the heart rate assists in maintaining homeostasis at the cellular level during exercising.Because of stress, exercise, medicine, or, in rare instances, a medical issue, the heart may not beat as quickly while a person is at rest as it does when they are leaping. While usually innocuous, heart palpitations can be unnerving.To learn more about heartbeat refer to:
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A. Original DNA:
CCT ATA TCT CTC TAT ATC TCT CAT ACT GTG TGT CTC TAT
Complementary DNA:
Answer: GGA TAT AGA GAG ATA TAG AGA GTA TGA CAC ACA GAG ATA
Explanation:
A goes T and C goes with T it's basically switching the letter to the corresponding one!
What are the two steps of protein synthesis that produce a protein from a gene ?
The protein synthesis pathway is complex and tightly regulated within each cell. It consists of two main steps: transcription and translation.
Gene expression refers to the combination of transcription and translation. The two main steps in protein synthesis are transcription and translation. During transcription, DNA is copied into mRNA in the cell nucleus using RNA polymerase. The mRNA is edited and exported to the cytoplasm where translation takes place. Translation occurs when the ribosome binds to the mRNA and reads the genetic code.
The first step in protein synthesis is transcription, the unfolding of DNA and the generation of messenger RNA (mRNA) chains. In the second step of protein synthesis, translation, tRNA and mRNA interact to encode amino acids and grow polypeptide chains.
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As humans burn fossil fuels for energy, the percent of carbon stored in fossils is reduced while the carbon in the atmosphere is increased. If green plants are also being removed, how might the carbon cycle and greenhouse effect be influenced? a. more carbon will be left in terrestrial ecosystems, decreasing the greenhouse effect globally
b. more carbon will be left in the atmosphere, increasing the greenhouse effect globally
c. more carbon will be left in the atmosphere, decreasing the greenhouse effect globally
d. more carbon will be left in terrestrial ecosystems, increasing the greenhouse effect globally
The carbon cycle and greenhouse effect will be impacted if green plants are also destroyed since more carbon will be released into the atmosphere, causing the greenhouse effect to be magnified globally.
Carbon dioxide, a greenhouse gas, is released into the atmosphere in massive quantities when fossil fuels are burned. Global warming is caused by greenhouse gases, which keep heat in the atmosphere. Over the past century, burning fossil fuels like coal and oil has increased the amount of carbon dioxide in the atmosphere (CO2). This increase is caused by burning coal or oil, which releases CO2 when oxygen and carbon dioxide from the air combine. 73% of all GHG emissions in the United States and 92% of all anthropogenic CO2 emissions in the country were produced by the burning of fossil fuels for energy.
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Answer:
Explanation:
a
what nc rivers flow to mississippi river basin
Answer: Several North Carolina rivers flow into the Mississippi River basin. These include:
The French Broad River
The Nolichucky River
The Pigeon River
The Little Tennessee River
The Hiwassee River
The Ocoee River
The Conasauga River
The Coosawattee River
The Cartoogechaye River
The Nottely River
This list is not exhaustive and there may be other rivers that also flow into the Mississippi River basin in North Carolina.
What is the main polysaccharide in plants?
Plants' cell walls contain cellulose, a structural polymer that serves as a dietary fiber when consumed.
The most prevalent organic molecule on earth is supposedly cellulose. Examples of cellulose include cotton, paper, and wood.
In order to maintain the stability of the structure of plant cell walls, cellulose, a hard, fibrous, and water-insoluble polysaccharide, is crucial. 20. The fibrils (bundles of microfibrils) that contain cellulose chains are known as microfibrils, and the fibrils themselves are made up of bundles of polysaccharide. These bundles together make up the plant cell wall.
The amazing strength of wood is a result of cellulose, a lengthy chain of joined sugar molecules. It is a crucial element of plant cell walls and a fundamental building block for numerous organisms.
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