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Item C is wrong"Protein breakdown is reduced"This sentence

Blood sugar is the main source of energy in the body**. Only when blood sugar is insufficient** does it start to break down fats and proteins. Protein only begins to break down when a person is desperately hungry and already dying.

You know what? So there is no reduction in protein breakdown at all. Because at this point the protein does not break down at all.

Blood sugar has three destinations in the human body (see High School Biology Compulsory 3) 1, oxidative decomposition 2, synthesis of glycogen storage 3, conversion into fat, certain amino acids.

Option C examines the third point. If B blood sugar is not fully utilized, it cannot be converted into certain amino acids, so protein synthesis is reduced.

When the human body is extremely short of energy, the body will break down protein to provide energy, and the 1 2 hours of C blood sugar is sufficient Energy ** is sufficient, so protein breakdown is reduced ......

Insulin converts sugars into glycogen, etc., and also promotes the oxidative breakdown of glucose to produce energy, but these reactions are not related to proteins.

I think it should be the same protein breakdown.

High blood sugar levels Blood sugar three ways.

1.It enters the tissue cells to oxidize and decompose to produce energy.

2.Synthesis of non-sugary substances such as fats.

3.Converted into hepatic glycogen and muscle glycogen.

I don't think it has anything to do with the breakdown of proteins.

Deamination, amino acids are converted into carbohydrates, so blood sugar rises.

I think it should be high blood sugar, so it should be.

Insulin converts carbohydrates into glycogen, etc., and also promotes the oxidative decomposition of glucose, so there is enough energy in the body to reduce the breakdown of proteins (diabetes is not without insulin, but its own secretion is not enough, I understand it).

In the dark treatment, there is only respiration, so the weight change during the dark treatment is the respiration consumption; When illuminated, photosynthesis and respiration are carried out at the same time; Therefore, the change in weight during light exposure is the sum (vector) of the amount of photosynthesis produced and the amount of respiration consumed.

Note that the most important point of this question is that "the weight change after darkening and the weight change after lighting are both compared with those before darking", that is, the weight change after darkening is the consumption of respiration for 1 hour, and the weight change after light is the sum of the consumption of respiration for 1 hour, the consumption of respiration for 1 hour, and the amount of photosynthesis produced for 1 hour (vector), that is, the sum of the consumption of respiration for 2 hours and the amount produced by photosynthesis for 1 hour (vector).

It is concluded that the amount of photosynthesis produced in 1 hour = weight change after light exposure -2 * weight change after dark treatment.

Specific to 30 degrees, this group has: the amount of photosynthesis produced in 1 hour = (+2)-2*(-4)=+10.

The amount of oxygen produced is directly proportional to the amount of organic matter produced by photosynthesis, and only the group with the weakest photosynthesis needs to be calculated, and the algorithm is the same as above.

27 degrees: photosynthesis produced in 1 hour = (+3)-2*(-1)=+5.

28 degrees: photosynthesis produced in 1 hour = (+3)-2*(-2)=+7.

29 degrees: the amount of photosynthesis produced in 1 hour = (+3)-2*(-3)=+9.

That is, the first group produces the least amount of oxygen.

The organic matter synthesized by photosynthesis per hour is 6mg, and the least amount of oxygen produced is group 1, and the net increase by weight = photosynthesis - respiration volume.

The first group produces the least amount of oxygen because only the first group produces the least amount of organic matter.

If there are 1870 a total of 100, including SS10 (black), noisy Li Li order SS20 (black), SS70 (light). One year later, SS11, SS22, disturbed genes: [(11 times 2)+22] (96 times 2)=23%, and the frequency of the S gene 100-23%= 77%.

Choose A. I'm very troublesome to write this, if you think it's pure and don't forget to give a good review, add a reward.

According to the principle of base complementary pairing, a-t c-g

Let the number of single-stranded bases be x

In the original single strand, there is a T in the complementary strand obtained after reverse transcription, so the number of t in the double strand is.

The original single-stranded g, and the complementary strand obtained after reverse transcription is c

The number of c in the double strand.

The original single strand is t, and the complementary strand is a

The single strand of the double strand is C, and the G of the complementary strand

The bases in the duplex g duplex are 2x in total, so the proportion of a is .

G is actually not so troublesome to analyze, because according to the principle of base complementarity, in the double-stranded DNA molecule A = T, C = G, so according to this equal relationship, calculate the ratio of A and C, or A and G, or T and C, or T and G, or T and G, and you can calculate the ratio of the other two bases according to the equal relationship mentioned above.

First of all, the disease is autosomal recessive.

Female 10 and sister 9 are sick.

So both parents are carriers.

The female Liang Lu Ran 10 performed normally.

So female 10 has a 1 3 chance of being dominantly homozygous.

There is a 2 to 3 chance of being a carrier.

The woman was 10 and married a patient.

If your child is sick.

Female 10 must be the carrier.

In the case that female 10 is a carrier.

The chance of a child getting sick is 1 in 2

And the female 10 has only 2 3 chances of being a carrier.

So the answer is 2 3 * 1 2 = 1 3

Female 9 (aa) suffers from beam rot and her parents are not diseased, indicating that female 5 (aa) and male 6 (aa) can be introduced as female 10 (1 3aa, or 2 3aa), female 10 can only have a diseased child with a patient with the same disease when the genotype is aa, that is, 2 3aa aa 1 3aa (2 3 1 2) + 1 3aa (2 3 1 2), so the probability of the child suffering from this disease (round elimination aa) is 2 3 1 2 = 1 3

1) The total amount of solar energy fixed by corn c = energy a contained in jade closed potato rice + energy consumed through cellular respiration b

a+B2) The transfer efficiency of poultry and livestock raised with corn is 15, and the total energy absorbed by poultry and livestock in the food accounts for only 15% of the total energy of the food (corn). The total energy really absorbed by poultry and livestock is d = 15% * a

The energy value of the increased organic matter of poultry and livestock e = the total energy really absorbed by poultry and livestock d * the proportion of the energy value of the dried organic matter of poultry and livestock to the total energy actually absorbed by poultry and livestock.

This proportional dust example = 1 - the proportion of poultry and livestock respiratory consumption during the growth process, that is, the proportion of corn respiratory consumption during the growth process = 1-b (a+b).

So e=15%*a*(1-b (a+b)).

The number of co-required water molecules is actually required to require the number of peptide bonds in this protein molecule, first assuming that all the peptide chains are straight chains, then the number of peptide bonds = the number of water molecules = m-n, and because the number of peptide bonds of cyclic polypeptides = the number of amino acids, there is no need to subtract the number of peptide chains, that is to say, the number of z water molecules in m-n is subtracted, so it should be +z, that is, the number of co-water molecules that the protein is completely hydrolyzed is m-n + z

Per linear peptide chain: number of peptide bonds = number of amino acids 1 (n z) peptide chain is the total number of amino acids (n z) cyclic peptide chain: number of peptide bonds = number of amino acids.

So, hydrolysis of peptide bonds requires a total of water m+z n

The root cause of apoptosis is not the breakdown of DNA, but the process of automatically ending the life of a cell determined by genes, and the root cause is the selective expression of genes.

For example, after the islet B cells become cancerous, they no longer synthesize insulin, so after the cells become cancerous, the synthesized proteins change, that is, the type and amount of mRNA formed by transcription change compared with the original.

The root cause of apoptosis is the breakdown of DNA'This statement is wrong. The reason is the selective expression of genes in cells at different times and spaces.

After the cells become cancerous, they are changed compared to normal cells, and these changes are expressed in the form of proteins, and the protein expression is different, and of course the mRNA is different.

The root cause of apoptosis is the degradation of DNA rather than its breakdown. The second problem is that after cancer, the genes of the cells will undergo some changes, and the proliferation rate of cancerous cells will be accelerated, the number of mRNA will increase, and the type is close to that of embryonic cells, due to the decrease in cell adhesion and metastasis, the number of cohesin and integrin mRNA will decrease, and the number of mRNA of proteins related to cell transfer and infiltration of healthy tissues will increase.