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2 years ago

What is the nature of "second signal molecules" in signaling pathways?

Biology

1 answer:

Vilka [71]2 years ago

6 0

Answer:

The target receptor is expressed in the membrane, the activity of the receptor can instigate the production of small molecules known as the secondary messengers that coordinate and initiate the intracellular signaling pathways. For example, cyclic AMP is a secondary signal molecule.

When the signal molecules stimulate the receptor, the signal is carried into the cell generally by means of secondary messengers.

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A fatty acid contains primarily carbon and hydrogen atoms, and its hydrocarbon tail is very hydrophobic. What kind of interactio

balu736 [363]

Answer:

Hydrophobic interaction.

Explanation:

On the basis of the polarity and the dissolution of water, the molecules can be classified into the hydrophilic and hydrophobic molecules. The hydrophobic molecules can easily dissolve in the non polar solvents.

The hydrophobic interaction is important that exist between the non polar molecules. The hydrophobic interaction plays an important role in the biological system as the lipids of the cell membrane are assisted together with the hydrophobic interaction. The hydrocarbon tail is non polar molecules that contains hydrophobic interaction within it.

Thus, the correct answer is hydrophobic interaction.

8 0

2 years ago

9. According to Larry Crawford, what is the most difficult part as Growing

Anon25 [30]

Answer:

The correct option is D: Being prepared for harsh weather conditions

Explanation:

Plants are sensitive to the changes in the environment and any drastic changes in their surroundings can potentially cause the plant to go into stress, or possibly even die. Too high or low a temperature and the plant will not be able to cope. Similarly, drastic changes in water levels will really affect its health and growth.

Hope that answers the question, have a great day!

5 0

2 years ago

Supose that two populations of squirrel are put in different environments for hundreds of generations. What will most likely hap

xenn [34]

C. Both will develop new sets of traits

4 0

2 years ago

The argument that each individual member of a species transforms itself to meet the challenges of a changed environment through

svlad2 [7]

Answer:

Jean Baptiste de Lamarck

Explanation:

i found this online

8 0

2 years ago

Toemas’s syndrome is a autosomal dominant disease, homozygous lethal, seen at a frequency of 1 in 10,000 cats. Felines with this

Anastaziya [24]

Answer: 50% or 25% according to the genotype of the male cat.

Explanation:

The female cat is unaffected, and since this is an autosomal dominant diease, it means this cat does not have any affected alleles. Thereby, its genotype is aa. This is because dominant alleles show their effect even if the organisms only has one copy of the allele. The male cat is affected with this syndrome so its genotype is either AA or Aa. For this disease to manifest itself, only one affected allele is needed. Although both alleles can be affected so the individual can be homozygous dominant or heterozygous.

To find this we have to do a punnett square. Here, we use the gametes produced by each individual. Gametes are sex cells, egg or sperm, which only have one allele of each gene.

Assuming that the cross is between aa and AA, the gametes produced by "aa" are "a", and the gametes produced by "AA" are "A" So we are having a cross between an "a" gamete and a "A" gamete. 100% of the offspring will be Aa so it is a heterozygous, which will develope this syndrome. And, males have one Y chromosome and one X chromosomes, thereby the chances of having a male kitten is 50%. Then, to conclude, there is a 50% chances of having a male kitten with this syndrome.

And, assuming that the cross is between aa and Aa, the gametes produced by "Aa" are "A" but also "a" So we are habing a cross between an "a" gamete and "A" or "a" gamete (See picture) In this example, there is a 50% chances of having a kitten with the syndrome, because only one genotype produced (Aa) has the affected allele. And, as we said before, since there is a 50% chances of having a male kitten, we can said that there is a 25% chances of having an affected male. Because to calculate both probabilities so that they occur simultaneously, it is necessary to multiply them. That is, 0.5 x 0.5 = 0.25 x 100 = 25%.

8 0

3 years ago