Answer:
Enzymes regulate metabolic processes through a variety of feedback mechanisms including inhibition.
Explanation:
Eukaryotic metabolic regulation refers to the mechanisms by which metabolic anabolic and catabolic pathways are modulated in eukaryotic organisms. Anabolic enzymes are involved in the biosynthesis of molecules, while catabolic enzymes are involved in degradative pathways. Thus, enzymes regulate metabolic pathways by catalyzing chemical reactions at their corresponding rates of reaction. Moreover, feedback inhibition refers to those mechanisms occurring when one enzyme is inhibited by the end product of the metabolic pathway, enabling cells to regulate these products.
The germ cell has 2 sets of chromosomes, and the four gametes will each have one set of chromosomes.
To have enough DNA for each gamete, the DNA in the germ cell must be ________.
Halved
Doubled (x2)
Quadrupled (x4)
Octupled (x8)
Answer:
Double (x2)
Explanation:
To have enough DNA for each gamete, the DNA in the germ cell must be doubled (× 2).
DNA REPLICATION:
DNA replication is the process by which the DNA molecule of a cell is duplicated in order to have enough genetic material for each daughter cell. DNA replication occurs prior to any cell division. According to this question, a germ cell with 2 chromosomes undergoes meiosis to produce 4 daughter cells. Each daughter cell (gamete) will possess 1 chromosomes each. However, for each gamete to possess enough DNA, the DNA in the germ cell must be doubled via the process of DNA replication.Learn more at: https://brainly.com/question/16464230?referrer=searchResults
The layers of the Earth are described by their composition but not their mechanical properties. True or false
answer is false
edgen 2022
Answer:
False
Explanation:
The layers include mantle, crust, cores, lithosphere.
small fishes, squid, and sharks are ______ ,but zooplankton are not
Answer:
Carnivores
Explanation:
CAN SOMEONE PLEASE HELP ME I REPOSTED THIS 3 time PLEASE PLEASEE HELPPPPPP
Answer:
A. Both plant leaf cells AND animal skin cells have a nucleus containing DNA.
B. Both plant leaf cells AND animal skin cells have a cell membrane.
C. Only a plant leaf cell has a chloroplast that undergoes photosynthesis.
D. Both plant leaf cells AND animal skin cells have mitochondria.
What information can the positive and negative numbers on a number line provide?
Answer:
It can provide if a number is greater than zero or less than zero
Explanation:
What type of cells are produced out of meiosis? plz help if you can!!
A) 4 diploid cells
B) 2 haploid cells
C) 2 diploid cells
D)4 haploid cells
Answer:
D)4 haploid cells
Explanation:
List some regions where physical weathering caused by water is common?Explain why
HELO AGAIN PLS
Answer :Physical weathering happens especially in places places where there is little soil and few plants grow, such as in mountain regions and hot deserts.
Explanation:
Where in the cell is the rough endoplasmic reticulum located?
Answer:
Rough ER is named for its rough appearance, which is due to the ribosomes attached to its outer (cytoplasmic) surface. Rough ER lies immediately adjacent to the cell nucleus, and its membrane is continuous with the outer membrane of the nuclear envelope.
Explanation:
1. Independent Variable __________________________________________________________
2. Dependent Variable ___________________________________________________________
3. Control (control group) ________________________________________________________
4. Constant ____________________________________________________________________
Answer:
1.a variable (often denoted by x ) whose variation does not depend on that of another.
2.a variable (often denoted by y ) whose value depends on that of another.
3.Control group, the standard to which comparisons are made in an experiment. ... A typical use of a control group is in an experiment in which the effect of a treatment is unknown and comparisons between the control group and the experimental group are used to measure the effect of the treatment
4.occurring continuously over a period of time.
I hope this helps!
ants that become immune to ant insecticides and are therefore able to multiply are an example of: please choose the correct answer from the following choices, and then select the submit answer button. answer choices natural selection. interaction. mutations. epigenetics.
Natural selection is one of the evolutive forces. It can select beneficial alleles, which are the product of mutations, and fixate them in the population. Option A. Natural selection.
What is natural selection?
Natural selection is one of the evolutive forces. It acts by selecting beneficial alleles and increasing their frequency in the population.
It results from the interaction between phenotype and environment, which determines gene destiny in space and time.
Natural selection results in adaptation, meaning that it causes an increase in the aptitude phenotype.
Aptitude can be defined as the contribution of each genotype to the next generation. Aptitude (or fitness) is reflected by the phenotype that results in the survival, fertility, and capability of having a mate. Aptitude must be significant to the natural selection act in its favor.
In many cases adaptations, resulting from natural selection can be correlated to environmental factors or selective pressures applied by other organisms or habitats.
The selective agent is the environmental trait that determines the differential survival of the phenotypic classes. The environment influences the probability that each genotype passes its gametes to the next generation.
Individuals exposed to new selective pressures need to adapt to survive. Under these environmental conditions, individuals suffer mutations that lead them to avoid them. Since these mutations are beneficial, they are selected by Natural Selection, fixated in the genotype, and transmitted to the following generations.
Let us remember that a mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
In the proposed situation,
1) ants were exposed to insecticides.
2) probably many of them dies, but some of them mutated and managed to survive
3) since this mutation was benefitial, it was selected by natural selection.
4) ants carrying this mutation got to reproduce and the mutation spread in the population.
Selective agent: insecticide.Ants response: mutation that lead to survivalThe correct option is then A. Natural selection.
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1. Name two weeds which compete for food, space and light with the main crop.
2. Give one advantage of building small check dams to stop the rain water from flowing away.
Answer:
1. Xanthium and Wild Oats.
2. The main purpose of check dams is to reduce water velocity and to trap sediments in gullies and streams instead of adding additional soil material being eroded away.
Explanation:
2 stawberries picked at same time off same plant and left for 3 days in different conditions 1 decayed why
Even under high temperatures and low relative humidity conditions, storage life is typically short time. Calyx freshness was evaluated on a scale from 0 to 2, zero when calyx shows good quality, one when quality remains acceptable and two if it is no longer acceptable. Storage life is usually brief, even in high temperatures and low ratio conditions, therefore the one strawberry was decayed.
The best time to plant strawberries is within the spring, up to some weeks before the final frost date. You may extend your strawberry crop from late spring to early fall by choosing a variety spread of strawberry types. It takes roughly four weeks for June-bearing types from plant blossoming to fruit picking. Day-neutral and ever-bearing varieties both flower within the spring at roughly the same time and take roughly the same amount of time from flowering to harvest.
Counting on the variety chosen, one strawberry plant will provide 40 to 70 berries throughout the course of the season. This is often equivalent to fruit weighing between 0.7 and 1.4 kilogram’s (1.5 to 3.0 lbs) in weight. They’re perennial, strawberry plants grow year after year. The lifespan of a strawberry plant is roughly six years, however after the primary two years, fruit production noticeably declines.
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he principal role for simple sugars in living organisms is to . multiple choice form cell membranes serve as a form of long-term energy storage create genetic codes create cellular energy
The principal role of simple sugars (i.e. simple carbohydrates) in living organisms is to create cellular energy.
What are simple carbohydrates?Simple carbohydrates (e.g. glucose, fructose) are a special class of macromolecules composed of only one monosaccharide unit, which serve as a source of energy for cellular respiration.
In conclusion, the principal role of simple sugars (i.e. simple carbohydrates) in living organisms is to create cellular energy.
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Within the golgi apparatus, _______ are added to proteins in a process known as _______.
Answer:The answer is carbohydrates and glycosylation
Most species of E. Coli are harmless or even helpful forms of bacteria that are found in the human intestine. E. Coli can aid humans in digestion and provide protection from other invading bacteria, but if the bacteria move to the human excretory system, they can replace other naturally occurring bacteria (Lactobaccilli). This can lead to bladder and kidney infections. Researchers found that by replenishing the excretory system with the naturally occurring bacteria, the infection caused by E. Coli is cured. Based on the research, what inference can researchers claim about the effect of bacteria?
Answer:
The inference is that bacteria can be pathogenic or characteristic of the commensal microbiota of different organs.
Explanation:
The human coexists with commensal micro-flora or commensal biota that are in balance and protect it from other pathogenic microorganisms, that is why we constantly live with a group of bacteria that do not generate pathological conditions in our body and even promote the stimulation of the immune response. .
When this balance is broken, pathogenic or opportunistic microorganisms invade, this is how they proliferate and generate infectious diseases that threaten the balance or state of human health.
describe the major functions and components of the following systems of the body: integumentary, skeletal, muscular, and nervous.
The major functions and components of the following systems of the body
integumentary system - is one of the major organ systems that comprise skin, nails, hair, sweat glands, and sebaceous glands. It acts as the first line of defense from the external environment and works with other body systems to regulate body homeostasis.Skeletal system provides shape to the body, , protection and movement,.Muscle is a specialised tissue of mesodermal origin. About 40-50 per cent of the body weight of a human adult is contributed by muscles. They have special properties like excitability, contractility, extensibility and elasticity.Muscles have been classified using different criteria, namely location, appearance and nature of regulation of their activities. Based on their location, three types of muscles are identified : (i) Skeletal (ii) Visceral and (iii) Cardiac.
Nervous of all animals is composed of highly specialised cells called neurons which can detect, receive and transmit different kinds of stimuli. The neural organisation is very simple in lower invertebrates. For example, in Hydra it is composed of a network of neurons.The neural system is better organised in insects, where a brain is present along with a number of ganglia and neural tissues. The vertebrates have a moredeveloped neural system.
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Which of the following mutations will not result in a change to the amino acid sequence of a protein?
A)Frameshift mutation
B)Silent mutation
C)Neutral mutation
D)Nonsense mutation
Answer:
B)Silent mutation
Explanation:
A Silent Mutation is defined as a point mutation that does not change the amino acid. This occurs because more than one codon can code for the same amino acid. So while the protein was changed in the end there were no large-scale effects to the organism. This is why it is called a "silent" mutation because you cannot tell anything changes and there are no side effects.
Which factors contributed to the additions of the modern cell theory
Answer:
These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are msotly the same, both structurally and chemically; and finally, that energy flow occurs within.
Is it possible to have another level after quaternary consumer?
Answer:
hmmm General classification by food source results in the four main trophic levels. It is possible to have quaternary and higher “consumers”, as even secondary consumers may also use the first trophic level as primary consumers. Generally only about 10 percent of the energy at one level is available to the next level
Explanation:
How does a Soccer Ball use Inertia
A cell in the leaf of a corn plant contains more chloroplasts than a cell in the stem of a corn plant.
Based on this observation, what inference can be drawn when comparing the cell in the stem to the cell in the leaf?
Answer:
yes cell leaves contain more
Explanation:
this is the answer
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What are some of the ways that scientists are using to slow down light?
Answer:
hey have demonstrated that applying a mask to an optical beam to give photons a spatial structure can reduce their speed.
Explanation:
Answer:
Scientists have long known that the speed of light can be slowed slightly as it travels through materials such as water or glass
Explanation:
Scientists have long known that the speed of light can be slowed slightly as it travels through materials such as water or glass. ... They have demonstrated that applying a mask to an optical beam to give photons a spatial structure can reduce their speed.
phosphodiesterases 3 and 4 differentially regulate the funny current, if, in mouse sinoatrial node myocytes
Sinoatrial node myocytes' cAMP (3′,5′-cyclic adenosine monophosphate) signaling is necessary for cardiac pace making both at rest and during the sympathetic fight-or-flight response (SAMs).
The cAMP-sensitive effectors responsible for pace making in SAMs include the cardiac "funny current" (If). cyclic nucleotide-sensitive, hyperpolarization-activated (HCN) channels are responsible for its production. cAMP either binds to the HCN channels directly or activates the cAMP-dependent protein kinase (PKA), phosphorylating them, to enhance the voltage-dependent gating of the channels. The mechanism limiting cAMP signaling to a PKA-dependent route is unclear, however PKA activity is necessary for signaling between adrenergic receptors (ARs) and HCN channels in SAMs. In different kinds of cardiomyocytes, PDEs hydrolyze cAMP and create cAMP signaling domains.
Here, we look at the function of PDEs in the control of If in SAMs. When PDE and PKA inhibitors were present or not, as well as before and after AR stimulation, it was detected in whole-cell voltage-clamp assays from acutely isolated mouse SAMs. The midpoint activation voltage (V1/2) of If at rest was depolarized by general PDE inhibition, which also eliminated the need for PKA in AR-to-HCN signaling.
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ATP synthase changes ADP to ATP when.......................................... passes through it.
ATP synthase changes ADP into ATP when light energy passes through it. The light-dependent reactions supply the Calvin cycle with CO2 and ATP.
Hope it helps uh.
5. Which of the following about Mendel's Law of Segregation is false?
a. It states that each of two alleles for a given trait segregate into different
gametes
Explanation:
Each gamete has an equal probability of containing either allele.
When a cause of death is density _____________________, a certain proportion of a population dies regardless of the population’s density.
Answer:
Independent
Explanation:
A density dependent factor would cause a downfall to the population based on its numbers, like a disease. A density independent factor would affect it regardless of the population size, such as a storm or cold winter.
What would be the expected nuclear dna content of a primary spermatocyte in the same organism?.
1.65 picogram(s), that expected nuclear dna content of a primary spermatocyte in the same organism.
In a gamete (i.e. sperm or egg), the quantity of DNA is 1c, and the range of chromosomes is 1n. Upon fertilization, each the DNA content material and the range of chromosomes doubles to 2c and 2n, respectively.Because they're produced with the aid of using mitosis, number one spermatocytes, like spermatogonia, are diploid and feature forty six chromosomes.
Each number one spermatocytes is going thru the primary meiotic department, meiosis I, to provide secondary spermatocytes, every with 23 chromosomes (haploid).A unmarried number one spermatocyte offers upward thrust to 4 sperms after meiosis. Primary spermatocyte undergoes first meiotic department to provide secondary spermatocytes (haploid). The secondary spermatocytes produce 4 haploid spermatids after the second one meiotic department.
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Sea-Going Crocodile vs Jaguar who will win?
Answer:
It depends on the battlefield.
Explanation:
sea going crocodile would win in the sea while jaguar would win on land.
What particles bond together to
form molecules?
A. Atoms
B. Neutrons
C. Compounds
D. Protons
Answer:
Atoms
Explanation:
Answer:
A. Atoms
Explanation:
In an ATP molecule, energy used by the cell is stored in:
A. The adenosine molecule
B. A bond between phosphate groups
C. Both A and B
D. None of the above
Answer:
B. A bond between phosphate groups
Explanation:
In an ATP molecule, energy used by the cell is stored in a bond between phosphate groups.