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2 years ago

If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?

Biology

1 answer:

agasfer [191]2 years ago

5 0

Answer:

Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA).

Activation energy is the amount of energy required to reach the transition state.

The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.

For cellular reactions to occur fast enough over short time scales, their activation energies are lowered by molecules called catalysts.

Enzymes are catalysts

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Which organisms would normally be the least numerous in this community?

grandymaker [24]

B. Krill
I hope this will help you that is the correct answer
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2 years ago

A man with normal vision marries a color-blind woman. Red-green color blindness is an X- linked recessive disorder. They have a

jeyben [28]

Answer: The probability is 100%.

Explanation: The chromosome X is related to gender. A man carries two different chromosomes (XY) and a woman carries two similar chromosomes (XX). The offspring of a couple will inherited:

If it is a boy, he inherites the chromosome Y from his father and X from his mother;
If it a girl, she inherites X from her father and X from her mother;

In the question, the woman is color-blind, which means she carries the recessive alleles: $X^{d}X^{d}$

The man, on the other hand, is normal, so his X-linked genotype will be: $X^{D}Y$ .

Now, since they have a daughter, she inherited her double X from each of her parents, which means she inherited one $X^{d}$ from her mother and one $X^{D}$ from her father.

So, the daughter's genotype can only be heterozygotic $X^{D}$ $X^{d}$ in other words, the probability is 100%.

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2 years ago

As TSH levels fall, the thyroid gland slows down thyroxin secretion. <br> True or False

kati45 [8]

Answer:

I think s its True

Explanation:

What do low levels mean? Low TSH levels indicate hyperthyroidism. This is also known as an overactive thyroid. If the thyroid gland is secreting levels of hormones that are too high, the pituitary gland produces less TSH

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2 years ago

Which type of RNA carries a genetic code from DNA to the ribosome?

Aliun [14]

Answer:

(A). mRNA.

Explanation:

During protein synthesis, information present in DNA as triplet codons gets transferred to mRNA molecule, by the process of transcription. The mRNA than gets transported to the cytosol, where it associates with ribosomes.

Ribosomes are known as protein factories of the cells as they provide platform for translation. During translation, information present in mRNA is used to translate polypeptide chain or protein as each codon codes for a specific amino acid.

Thus, the correct answer is option (A).

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2 years ago

What organelle could you hypothesize occur in large numbers in muscle cells?

zhannawk [14.2K]

Answer: D

Explanation:

it just is D

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2 years ago

Read 2 more answers