I need help with question 54 .

Answer:

2.4 × 10⁻⁶ M

Explanation:

Molar concentration = no of moles of solute (enzymes)/volume of solvent(cystosol)

Let V = volume of solvent = volume of cystosol = πd²h/4 where d = diameter of cell = 1.0 m and h = height of cell = 2.0 m

Concentration of enzymes, C = n/V where n = no of moles of enzymes

Also, n = m/M where m = mass of all enzymes and M = molecular weight of protein = 100,000

Note that the solvent for the enzymes is cystosol, since they are dissolved in it.

Density of cystosol,ρ = specific gravity of cystosol in g/cm³ = 1.20 g/cm³.

Now, ρ = m'/V where m = mass of cystosol and V = volume of cystosol

m' = ρV

m' = 1.20V

Given that 20 % of the cystosol is protein and all protein are enzymes, the mass of enzymes is thus m = 0.2m' = 0.2 × 1.20V = 0.24V

C = n/V

= m/MV

= 0.24V/100000V

= 2.4 × 10⁻⁶ mol/cm³

= 2.4 × 10⁻³ mol/dm³

= 2.4 × 10⁻³ M

This is the concentration of all the 1000 enzymes.

So, the concentration of one enzyme is 2.4 × 10⁻³/1000 M = 2.4 × 10⁻⁶ M

Answer:

The answer is lipase  

Hope this help

Explanation:I did the test

Answer:

An argument could be that there have been many instances where people on life support or in a vegatative state have 'woken' up and gotten better after many years. So, taking someone off life saving machines could be taking away their chance of getting better and their chance of surviving. Since the person is not dead, some may even see it as murder.

Explanation:

umm I tried <3

Answer:

f

Explanation:

Answer:

SCAVANGER

Explanation:

Answer:

Raccoons are scavengers

A raccoon is not a decomposer but is an omnivore and scavenger. Raccoons will eat just about anything, including a wide variety of plants

Answer: d

Explanation:

Answer:

Feedback inhibition, in enzymology, suppression of the activity of an enzyme, participating in a sequence of reactions by which a substance is synthesized, by a product of that sequence.

Answer:

breaking down substances within the cell

Explanation:

there are many different types of vesicles, Peroxisomes and lysosomes are both types that break down substances in the cell

The correct statement about vesicles is "Breaking down substances within the cell"

Vesicles are an organelle isolated from the cytoplasm by a membrane-like lipid layer.

Therefore, we can conclude that the cell incorporates, inside the vesicle, particles from the extracellular environment and also through the vesicles it releases degradation products to the extracellular environment.

Learn more about the vesicles here: https://brainly.com/question/11131709

Answer:

I think your asking what is the original source of the matter in food

Explanation:

if so The Sun is the major source of energy for organisms and the ecosystems of which they are a part. 

Answer:

not sure but mark that guy brailest ^

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Answer:

Technically, the largest ever marine predator known thus far - the blue whale - is, for now, alive and well, but I know what you mean. You’re not talking about filter-feeders, or fish-eaters, you mean macropredators.

The last truly enormous macropredator in our oceans was probably Carcharocles megalodon, which went extinct about 3.6 million years ago. Other recent examples include the terrifying sperm whale Livyatan melvillei (which disappeared 8.9 mya) and other megatoothed sharks like C. chubutensis.

So, why did the giants go away? The answer, in truth, is likely multi-faceted. Here are some major promising hypotheses, or at least contributing factors:

Whales have declined. Giant sea carnivores like C. megalodon and Livyatan relied on marine mammals - specifically baleen whales. During the Pliocene, the Americas connected and the Central American Seaway was closed. This seems to have triggered a significant decline in the diversity of tropical whales, and would thus limit food availability for huge, energy-hungry predators.

Things got too cold. The extinction of megalodon and other giant ocean predators roughly coincides with the trend of decreasing temperatures the Pliocene brought. Giant sharks in particular, not being fully warm-blooded, would suffer from this, and it would also mean a decline in food supply. You can even see a sudden cold snap just about when Carcharocles went extinct, 3.6 mya.

Smaller predators outcompeted them. The niche of Carcharocles and the macroraptorial sperm whales is arguably still filled today - by the killer whale. Many orca pods specialize in hunting whales or other marine mammals. However, killer whales and their ancestors were perhaps more opportunistic, fast, intelligent and indeed adaptable than the massive, solitary hunters.

Ironically, the largest ever marine predator owes its existence to the demise of the largest ever marine macropredators. Since the extinction of macroraptorial sperm whales and Carcharocles megalodon, baleen whales have been gradually increasing in size, for they no longer need to be as fast and agile. Because of this, we have the privilege of sharing our world with the largest animal known to have ever lived - the blue whale.

Answer:

dominant trait

Explanation:

Recessive alleles can only show up when there is no dominant allele present to suppress them.

Answer: Dominant traits

Explanation:

Recessive traits only show up when there are no dominant alleles

Extraterrestrial traits are not a thing

Solution :

Denaturing may be defined as the process where the protein they lose their shape and their function because there is a change in the pH level or in the temperature. Although the amino acids sequence also known as primary structure, it does not change. But the shape of the protein might change a little bit so much that it can become dysfunctional in which protein is considered to be denatured.

The enzyme, Pepsin, the breakdown protein in our stomach only operates at a very low pH level. At higher pH level, the pepsin's configuration the way the polypeptide chain is being folded up in a 3 dimension begins to change. The pH level of the stomach is maintained at a low level to ensure that pepsin continues for the digest protein and that it does not denature.

There are 4 levels of the protein structure --- they are the primary, the secondary, the tertiary and the quaternary.

The primary protein is a particular sequence of amino acids in each of the polypeptide chain that makes the protein. The final protein structure depends on this sequence.

Secondary structure arise from the interactions between the neighboring or nearby the amino acids as polypeptide starts folding into 3D form.

The tertiary structure is the most important of structural levels in determining.

The quaternary structure also applies to the proteins made from more than one polypeptide chain.

Answer:

Climate change leads to: A warming ocean: causes thermal stress that contributes to coral bleaching and infectious disease.

Explanation:

Sea level rise: may lead to increases in sedimentation for reefs located near land-based sources of sediment. Sedimentation runoff can lead to the smothering of coral.

Answer:

E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.

A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.

Explanation:

Meiosis is a kind of cell division that strictly occurs in sexually-reproducing organisms. It is the process whereby four daughter cells that are genetically different from their parents are produced. In meiosis, the chromosome number of each daughter cell (gamete) is reduced by half. As highlighted in this question, the meiotic process is essential in the sexual reproduction and life cycle of many organisms.

This importance is attributed to the fact that:

- Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization. That is, a diploid organism (2n) produces a haploid gamete (n), which becomes diploid again when fertilized by another gamete.

- Increasing genetic diversity ensures that no two haploid gametes are exactly the same. This occurs because of a process called CROSSING OVER, which enables that the alleles of each gamete is recombined to be different from one another in order to promote genetic diversity.

Answer:

A, B, C, E

Explanation:

i just did it

Answer:

1) Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.

Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?

A.

The steel wool should be burned inside of a sealed jar or other closed system.

Explanation:

The explanation for number 1 is in the link below and the answer is provided also:

https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020

Answer:

The function of DNA is tied to its structure. ... The sugars and phosphates link the nucleotides together to form each strand of DNA. When two strands of DNA come together, base pairs form between the nucleotides of each strand. Nitrogenous bases pair together in the following way: A-T and C-G.

Answer:

i think the answer is c

Explanation:

Answer:Erwin Chargaff

Explanation:

Answer:

C. Base

Explanation:

The bases for DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). The certain sequence gives certain genetic information.

Answer:

96.4

Explanation:

The answer is at the top

When she asked at what temperature the pool was kept, she was told that it had a constant temperature of 35.8°C. The temperature is the pool in °F, to the nearest tenth is 96.4°F. Therefore, option (B) is correct.

The average kinetic energy of all of a substance's particles is used to measure temperature. The average kinetic energy of a substance rises with the speed at which its particles move, increasing its temperature and making it feel warmer.

One of the seven SI base units is the kelvin, which is the thermodynamic temperature unit. Curiously in the SI, we additionally characterize one more unit of constant temperature, called the degree Celsius (°C).

Learn more about temperature:

https://brainly.com/question/11464844

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Answer:

all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.

Explanation:

-Eijiro <3

Answer:

When recombination occurs during meiosis, the cell's homologous chromosomes line up extremely close to one another. Then, the DNA strand within each chromosome breaks in the exact same location, leaving two free ends. Each end then crosses over into the other chromosome and forms a connection called a chiasma.

Explanation:

Answer:

Due to stomata.

Explanation:

Transpiration occurs mainly through leaves because of the presence of stomata n the lower side of the leaves. Transpiration refers to the loss of water from the body of plants so leaves has small pores which is used by the plant to regulate internal temperature.  Sunken stomata lower the rate of transpiration because it is not directly exposed to the surface which protects the escaping water vapor due to air.

Answer:

A) A molecular clock is a measure of evolutionary time based on the theory that specific DNA sequences mutate at constant rates. To use a molecular clock, scientists first select two different species and compare their DNA sequences. They can compare the DNA sequences directly, or by looking at the RNA and protein molecules created from the DNA. Molecular clocks help to measure the number of changes and mutations which accumulate in the gene sequence of different species over a period of time.

B) Molecular clocks assume the neutrality of gene mutation. They are based on the fact that genetic mutations although random, occur at a relatively constant rate. Evolutionary biologists use this information to deduce how species evolve and determine when two species diverged on the evolutionary time line. It is useful in the study of variations in selective forces, and also facilitates establishing the dates of phylogenetic events including those not documented by fossils. Molecular clocks do have some limitations. Rates of change may not be constant, may not be the same in all organisms, and may be different for different genes.

I used the answer above and added some stuff here and there, so credit to them. I'm not sure if what I wrote makes much sense, but hopefully it can be somewhat helpful. :)

Answer:

The probability of the couple´s next child having polydactyly is 1/2 = 50%

Explanation:

Available data:

Due to technical problems, you will find the complete answer and explanation in the attached files