In cells the lipid bilayer's core is non polar, ions that are drawn to polar surroundings would be repelled by it.
For cells to continue functioning as they go throughout their life cycle, there must be a tremendous amount of exchange. The integration of living ions and the release of waste materials required for regular operation are both possible during transportation. Simple diffusion in cells and electron transport are the ways by which ions are transported across membranes. Solutes diffuse more easily via channels made of proteins. In order to push ions against the gradient of concentration, active transport needs energy in the forms of ATP conversion, channel proteins, or pumps. These charged (polar) ions do not flow across the membrane because of their charge. They instead travel through ions.
(Why is it important that ions being transported across a cell membrane be shielded from the interior of the lipid bilayer? )
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which two properties of glucokinase explain why it is an ideal glucose sensor capable of stimulating insulin release from the pancreas?
Glucokinase acts as a glucose sensor in beta cells by regulating the rate of glucose entrance into the glycolytic pathway (glucose phosphorylation) and subsequent metabolism.
Despite the fact that it is a monomeric enzyme, glucokinase has a considerably lower affinity for glucose and exhibits positive cooperativity for this substrate. Glucokinase is a critical enzyme in the liver's capacity to store glucose as glycogen, particularly in the postprandial stage.
The affinity for glucose of glucokinase is lower than that of the other hexokinases. In the physiologically significant range of 4-10 mmol/L (72-180 mg/dL), glucokinase alters shape and/or function in tandem with increasing glucose concentrations. At a glucose content of roughly 8 mmol/L (144 mg/dL), it is half-saturated. It is theorized that glucokinase (GCK) serves as a glucose sensor not only for the regulation of insulin release by pancreatic -cells, but also for the rest of the cells in mammals that contribute to glucose homeostasis.
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why are most affected individuals with a homozugous dominant disease usualy heterozygotes and not homozygotes
If a dominant gene produces the disorder, a heterozygote can also have it.
What exactly is a "disease"?Any unfavorable deviation from such an organism's typical structural or functional state is referred to as a disease. A disease differs from a physical damage in origin and is typically accompanied by the a set of symptoms. A sick organism frequently exhibits signs or symptoms that reveal its abnormal state.
What leads to illness?Bacteria. These one-celled organisms cause strep throat, tuberculosis, and urinary tract infections. Viruses. The various diseases brought on by viruses, which are even more insignificant than bacteria, range from the common cold to AIDS.
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Scientists predict that we will eventually use up all available fossil fuels. Which list includes only fossil fuels?.
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What is the product of performing a condensation reaction with three monosaccharides?
which cellular components are precursor metabolites for the construction of macromolecule building blocks?
The building blocks are fatty acids , amino acids , sugars and nucleotides.
These include lipids (or fats), proteins, carbohydrates, and nucleic acids. All of the main kinds of macromolecules share the property of being huge polymers constructed from small repeating monomer subunits.
The majority of macromolecules are constructed from single monomers, often known as building blocks. Covalent bonds allow the monomers to join to create polymers, which are bigger molecules. Monomers produce water molecules as a consequence of this process.
The majority of biological macromolecules are polymers made by connecting monomers, or single molecules, in a lengthy chain. They are created by the polymerization process. In this procedure, two monomers are joined together via dehydration synthesis, or the elimination of a water molecule.
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Look at the diagram. What is the compound shown? Give the name, not the symbols.
Answer:
where is that diagram shown
Would the reaction rate on graph B of Model 2 ever reach a maximum level? Justify your answer.
The graph B never saturates because the enzyme is always in excess. These excess enzymes will convert the starch into simple glucose molecules. Hence, there will be no maximum limit, as both are in abundance.
What is the enzyme substrate reaction?The enzyme has an active site where the substrate can bind and convert into the product, so the enzyme is called a catalyst. Here the enzyme is amylase, and its substrate is starch. When there is an excess of enzymes in the solution, they can convert it into a product as long as substrates are available. If the substrate runs out, the reaction will come to a halt.
Hence, this reaction has no maximum limit until there are excess substrates and enzymes. If one is restricted, then the reaction can stop.
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5. You are asked to catalogue several species by their life
strategies. What criteria would you use to determine the
predominant life strategy of each species?
Criteria that would use to determine the predominant life strategy of each species will be examining each species' life span, sexual maturity age, and the number of offspring produced throughout a reproductive cycle.
The fundamental unit of biodiversity, a species also serves as the taxonomic rank and classification of an organism. A species is frequently described as the biggest group of organisms in which any two individuals of the right sexes or mating types can successfully reproduce sexually and result in fertile offspring.
The karyotype, DNA sequence, shape, behavior, or ecological niche of a species are other methods to define it. Due to the inability to study fossil reproduction, paleontologists also employ the chronospecies idea.
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during , dna serves as a template to assemble a strand of rna. a. transcription b. translation c. dna transfer d. transcriptional modifications e. replication
During Transcription, DNA serves as a template to assemble a strand of RNA
What is DNA and DNA template?
Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases that make up the code that stores the information in DNA.The sample of DNA that contains the desired sequence is known as a DNA template.What is transcription?
Transcription is the process of copying a segment of DNA into RNA. The segments of DNA transcribed into RNA molecules that can encode proteins are said to produce messenger RNA. Other segments of DNA are copied into RNA molecules called non-coding RNAs.
Therefore, during Transcription DNA serves as a template to assemble a strand of DNA
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1. based on what you know about the abiotic factors most strongly influencing the marine realm, why is the process of ocean upwelling shown above so important for marine ecosystems?
Coastal upwelling promotes the growth of plankton and seaweed because the deep water pushed to the top is frequently nutrient-rich. Fish, marine animals, and birds can then eat these, in turn. Some of the world's most fertile ecosystems are produced by upwelling.
The kinds of flora and animal species that can survive in an aquatic environment are determined by a number of abiotic conditions. The amount of sunshine, the temperature, the depth of the water, and the chemical makeup of the water all have a significant impact on aquatic ecosystems, whether they are freshwater or saltwater.Oceanic mass movements known as upwelling and downwelling have an impact on both surface and deep currents. The water must be stirred, oxygen must be sent to the deep ocean, heat must be distributed, and nutrients must be brought to the surface.To know more about marine animals
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A grower who wishes to enhance plant growth by adjusting the carbon dioxide levels in the greenhouse will use a(n) _________as analyzer to evaluate CO2 levels.
A grower who wishes to enhance plant growth by adjusting the carbon dioxide levels in the greenhouse will use a NDIR as analyzer to evaluate carbon dioxide levels.
What is NDIR?Carbon dioxide can be measured using infrared detectors, also known as NDIR analyzers, because it is an excellent absorber of infrared energy. Depending on the application, carbon dioxide can be measured in percent (%) or parts per million (ppm).
A sensor is used to measure carbon dioxide. The NDIR non-dispersive infrared sensor is one of the most common.
Its popularity stems from its long life-span, high speed, and low cross-sensitivity to other gases. An NDIR CO2 sensor detects infrared light in an air sample.
Thus, NDIR can be used.
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explain what features of endospores make them so resistant to microbial control, and how sterilizing techniques work to destroy them.
Endospores are resistant to environmental stresses that would usually result in the bacterium's death. These stresses include high temperature, intense UV irradiation, desiccation, chemical damage and enzymatic degradation.
Because they contain less water and have a slower metabolism than vegetative organisms, bacterial endospores are more resistant to disinfectants. Not all microorganisms respond to disinfection in the same way. However, there are two ways to eliminate bacterial endospores. The first technique involves spore killing at high temperatures. The second technique involves reactivating endospore germination to produce active bacteria that can be quickly eliminated using conventional sterilizing techniques.
The dehydration of the core protoplast caused and maintained by the osmotic activity of enlarged electronegative peptidoglycan polymer may be the cause of the exceptional heat resistance of bacterial endospores.
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Please help me, I have a F
Failure to build spindle - anaphase
Failure to dissolve the nuclear membrane - prophase
Failure to condense chromosome - metaphase
What is mitosis?Mitosis is the division of vegetative cells to produce two daughter cells. The process occurs in 4 steps:
Prophase: a stage where the nuclear membrane dissolves and the chromosomes condense to become visible under the microscope.Metaphase: a stage where the condensed chromosomes line up at the center of the cell to form a metaphase plate. each chromosome also gets engaged by the spindle fibers from the opposite ends of the cell. Anaphase: sister chromatids are pulled to opposite poles as a result of the shortening of the spindle fibers.Telophase: sister chromatids complete their migration to the poles. The chromosomes decondense back and the nuclear membrane reappears.Thus:
Failure to build spindle fibers will affect anaphase the most.Failure to dissolve the nuclear membrane will affect prophase the mostfailure to condense chromosomes will affect metaphase the most.More on mitosis can be found here: https://brainly.com/question/26678449
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a(n) blank is a molecule that can bind to an enzyme and prevent the enzyme from working. there are two types: a(n) blank binds to the active site of the enzyme; a(n) blank binds elsewhere on the enzyme.
An enzyme inhibitor is a chemical that can attach to an enzyme and keep it from functioning. There are two kinds: an enzyme inhibitor and an enzyme blank. An enzyme blank binds to the enzyme's active site.
What exactly are enzyme inhibitors?An enzyme inhibitor is a chemical that can attach to an enzyme and stop it from functioning. There are two types: a competitive inhibitor binds to the enzyme's active site and a noncompetitive inhibitor binds somewhere else on the enzyme.
Various Enzyme Inhibitors?Enzyme inhibitors can also be divided into two groups:
- Inhibitors that are irreversible:
- Reversible inhibitors: Possibility of reversal (competitive, noncompetitive, and uncompetitive inhibitors).
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sometimes, an elisa (enzyme-linked immunosorbent assay) is used to detect anti-measles antibodies in a patient's serum. what type of elisa could be used for this application? select all that apply.
An ELISA (enzyme-linked immunosorbent assay) is a test that allows you to measure the presence of antibodies in a patient's serum.
It can be used to detect anti-measles antibodies in patients who have been vaccinated against measles and other diseases, such as rubella and chickenpox.
A sandwich ELISA uses two antibodies to bind to an antigen. One antibody has a special enzyme attached, which can be detected with a color change or by fluorescence.
The second antibody has been coated onto the surface of the microtiter plate, which contains many wells for testing samples. When the first antibody binds with its antigen, it will also bind with the second antibody on the plate. The enzyme-linked one will then coat itself on top of this double-coated structure and make it visible through light or color changes.
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Assume alternative splicing can generate all permutations and combination. How many proteins could a gene with three exons and two introns generate?
Answer:
Gene splicing is an important source of protein diversity. During a typical gene splicing event, the pre-mRNA transcribed from one gene can lead to different mature mRNA molecules that generate multiple functional proteins.
in this process, which is called “alternative splicing”, one gene thus provides the information for two different proteins
A protein with 3 exons can give up 3 proteins or more. Usually one exon leads to one or more than one proteins. Splicing gives out intron and keep the exons.
What is the main tool for the splicing ?After the splicing the exons are kept whereas introns are removed out thus this creates the tension in the structure which is maintained by the splicosomes.
One protein is produced from one gene and that means only a section of DNA is required to code for a protein. Exons has both coding and non-coding strands. There is no sure thing like that this much of exons produces this much of proteins only.
But there are a fix thing that is there are 64 codons and they make up the 20 amino acids that are essential in nature and they do make an important role in the functioning of the body.
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which of the following courses would be most closely related to a career as a rangeland management specialist? diversity of life diversity of life exotic species exotic species overhunting and its effects on the ecosystem overhunting and its effects on the ecosystem land restoration management
The following courses would be most closely related to a career as a rangeland management specialist in land restoration management. Option D.
Land remediation may include the process of cleaning and remediation of sites suffering from ongoing environmental degradation. B. Caused by natural causes and human activities to restore the area to its natural state as a habitat for wildlife and balanced habitats.
Land restoration is the ecological process of restoring natural and safe landscapes for humans wildlife and plant communities. This process paves the way for protecting ecosystems generating economic development preventing natural disasters such as floods and increasing soil productivity and food supply. The aim is to identify land-use combinations that can best meet stakeholder needs while securing future resources in a given landscape.
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he number of male progeny (produced to honey bee drone ) produced from fertilization of 4 unfertilized eggs
1)0
2)4
3)5
4)8
The number of male progeny produced from fertilization of 4 unfertilized eggs is 4 Drones.
Fertilization may be described as the union of two haploid gametes, the spermatozoa and the oocyte, hereto called egg, to repair the diploid state, shape a zygote thru the manner of egg activation, and begin a series of mitotic divisions that consequences in cell differentiation and embryo improvement.
Through fertilization, the egg and sperm are stored the egg is activated to begin its developmental software, and the haploid nuclei of the 2 gametes come collectively to form the genome of a new diploid organism.
Fertilization commonly takes region in a fallopian tube that links an ovary to the uterus. If the fertilized egg efficiently travels down the fallopian tube and implants in the uterus, an embryo starts offevolved growing.
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you look at a cell and see 14 tetrads on the metaphase plate. from this information you would know that
If at metaphase plate in a cell there are 14 tetrads the we can confirm that this is a non human cell in metaphase 1
The tetrads moves to metaphase plate during meiosis 1 and their kinetochore point in opposite direction towards opposite poles. They align themselves in a line at the equator plate. This occurrence is the second process by which the gametes or spores acquire variety. Tetrads are formed by homologous chromosomes during prophase I of meiosis. These pairs align to form the metaphase plate during metaphase I at the intersection of the cell's two poles.
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Use the background information to write a CER responding to the driving question:
"Why is there so much peat?"
Your CER must Include:
• Components: Living and nonliving components of the Arctic system.
Interactions: Flow of energy and matter between the components.
•Mechanism: Role of cellular respiration.
• Evidence: At least two pieces of evidence from our investigations.
• Label the sentences for your claim, evidence, and reasoning.
Peat forms when plant material does not fully decay in acidic and anaerobic conditions.
Wetland vegetation, primarily bog plants comprising mosses, sedges, and shrubs, make up the majority of its composition. The peat traps water as it builds up. This gradually makes the environment wetter, which permits it.
Peat is often hand-cut and allowed to dry out in the sun. However, businesses may employ compression to extract moisture from either the peat, which would be soft enough readily compressed as well as may be used as gasoline once dry, for industrial uses. of wetlands to grow.
The three types of peat are fibric, hemic, and sapric. The least decomposed peats contain intact fiber and are called fabric peats. Sapric peats are among the most degraded, followed by hemic peats.
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the major disadvantage of cassava as a dietary staple is that it is very low in protein. significant disadvantage of planting hybrid seeds?
Cassava contains less protein than other cereal grains, and the protein it does contain is of poor quality and contains relatively few important amino acids.
Describe proteins.Large, complex proteins known as protein perform a variety of vital roles in the body. They are crucial for the structure, operation, and control of the cardiovascular and respiratory systems and carry out the majority of their job inside cells.
What are the primary advantages of protein?A vital component of a processes that give you energy and allow your blood to transport oxygen around your body is protein. Furthermore, it helps in the production of antibodies which fight against infections and diseases & stimulates the development of new cells.
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Compared to other cereal grains, cassava has a lower protein content, and the protein that is there is of poorer quality and contains fewer essential amino acids.
Is cassava a sweet potato substitute?
Despite the fact that the spelling is sometimes confused, the two are unrelated. Similar to potatoes, cassava seems to be a root vegetable which can be prepared in a variety of ways. This starchy tuber has thicker skin and the appearance of a butternut squash or yam on the outside. Cassava seems to have a neutral flavour and a tender, airy texture when cooked.
Is cassava unhealthy for You?
Although cassava has a lot of carbohydrates, it also contains a lot of fiber and a good amount of vitamins and minerals.
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the diffusion of hydrogen ions down their concentration gradient allows;
A. H+ ions to serve as the final electron acceptor
B. energy to be released as H+ ions move freely across the mitochondrial membrane
C. a concentration gradient to be generated when H+ ions are passively transported from the matrix to the inter membrane space of the mitochondrion
D. ATP to be synthesized when H+ ions move through a channel in ATP synthase
The diffusion of hydrogen ions down their concentration gradient allows ATP to be synthesized when H⁺ ions move through a channel in ATP synthase (Option D).
What is the ATP synthase protein?The ATP synthase is a protein used by the cell to generate adenosine triphosphate or ATP from adenosine diphosphate or ADP and phosphate, which requires an electrochemical gradient generated by pumping protons H⁺ through the mitochondrial inner membrane.
Therefore, with this data, we can see that ATP synthase is required to generate ATP by using an electrochemical gradient in the cell.
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How can fossils tell scientist about the past?
Answer: Fossils can tell scientists about the past by showing how the skeleton is structured so they can get an idea about what they ate, their limitations, and sometimes even how they acted or mated.
Explanation:
what is the most significant factor affecting environments and biodiversity. describe what role do humans have in protecting or changing this issue?
The most significant factor affecting environments and biodiversity is the way that humans have altered natural habitats to make room for farmland or to obtain natural resources. As humans, it is our role to protect the environment.
To obtain our food, water, fuel, medicines, building materials, and many other necessities, humans must interact with the environment. Through the use of science and technology, we have improved our ability to exploit the environment for selfish purposes, but we have also harmed and polluted it. We have a moral duty to protect the environment for the benefit of present and future generations. Men are polluting the environment, whether they are conscious of it or not. Deforestation, water and air pollution, and greenhouse gas-induced climate change are a few of these. You can promote biodiversity and protect the environment by reducing, reusing, and recycling. Cut back on the waste you generate, volunteer to help with community clean-ups, Educate people, improve water efficiency, Think sustainably when shopping, be cautious, using light bulbs with a long lifespan. Plant a tree, etc.
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which statement correctly describes most cinder cone volcanoes?
a) they are one of the tallest types of volcanoes.
b) they have a single,symmetrical cone at the top.
c) they often take thousands of years to form.
d) they emit lava that slowly spreads before cooling.
Statement correctly describes most cinder cone volcanoes are they have a single, symmetrical cone at the top
Cinder cones are the simplest type of volcano and they are built from particles and blobs of congealed lava ejected from a single vent and as the gas charged lava is blown violently into the air and it break into small fragments that solidify and fall as cinders around the vent to form circular cone and oval cone and a cinder cone is a steep conical hill of loose pyroclastic fragment and such as volcanic and clinkers and volcanic ash
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Answer:B
Explanation:
the field that focuses on the study of short-term evolutionary change in a given species is known as .
A gene pool is made up of every gene present in every individual of a specific species or community. Micro genetics is the scientific discipline that focuses on understanding transient evolutionary change within a particular species.
What is the term for when a species changes?In biology, evolution is the process through which new species arise over time from already existing ones. In genetics, evolution is any shift in the frequency of alleles in populations of organisms from generation to generation.
What is natural selection according to Darwin?Those that possess adaptive traits—traits that give them an advantage—are more likely to endure and procreate. The descendants of these individuals then inherit the adaptive qualities.
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DNA polymerase repairs mistakes made durring DNA replication true or false
Answer: True
Explanation:
DNA polymerases from many species, including bacteria, viruses and eukaryotes, possess a 3′–5′ proofreading exonuclease activity which removes misincorporated bases from extending primers, thereby improving fidelity.
many sea creatures that occupy the lower benthic zones of the ocean are sightless. explain why this marine life, such as a variety of crabs, are not handicapped by their sightlessness.
Even though there is no light at the bottom of the ocean but still marine animals are adapted to not being able to see and even if they had eyes, they would not be able to see.
Why are benthonic zones?Many sea creatures that occupy the lower benthic zones of the ocean are sightless.
Animals that live on the sea floor are called benthos and most of these animals lack backbone and are hence called invertebrates. Benthic invertebrates are sea anemones, sponges, corals, sea stars, sea urchins, worms, crabs and others.
Because of the depths, benthic zone is characterized by low sunlight and low temperatures and this attributes to little life and biodiversity.
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Which of the following describes the photic zone of the open ocean?
ANSWER IF YOU'RE 100 PERCENT SURE!!!
THIS IS FOR A TEST
A. The part of the ocean that CANNOT support photosynthesis
B. The darkest part of the ocean, where NO light can penetrate
C. The shallowest part of the ocean where there is enough light to support plant life.
Answer:
C is the answer of ur question
in the human life cycle a.meiosis produces haploid gametes, and fertilization creates a diploid cell that divides by mitosis to produce a new individual. b.mitosis produces haploid gametes, and fertilization creates a diploid cell that divides by meiosis to produce a new individual. c.diploid gametes reproduce by meiosis to produce haploid daughter cells that divide by mitosis to produce a new individual. d.diploid gametes reproduce by mitosis to produce diploid daughter cells that divide by meiosis to produce a new individual
Meiosis produces haploid gametes, and fertilization creates a diploid cell that divides by mitosis to produce a new individual.
Understanding meiosis
One method of cell division is meiosis. Reporting from the official website of the Ministry of Education and Culture of the Republic of Indonesia, meiotic division only occurs in the sex organs.
The function of Meiosis is to produce gametes (egg cells and sperm cells). This division produces daughter cells that have half the chromosomes of the parent cell.
The number of chromosomes possessed by daughter cells is n or is called haploid. Hence, meiotic cell division is referred to as reduction division.
Meiosis is a cell division thatthat produces 4 daughter cells, each of which has half the number of chromosomes of the parent cell.
And while body cells carry a total of 46 chromosomes, gamete cells only carry 23 chromosomes. A healthy young adult male will produce several hundred million gametes each day. In women, sex cells or ovum development follows a long process, starting in the fifth month after the woman is conceived. Meiosis begins at this stage, but stops at the egg precursor cell stage – or primary oocyte – during fetal development.
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