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gulaghasi [49]
3 years ago
13

Please help me out !!!!!!!!!!

Biology
1 answer:
11111nata11111 [884]3 years ago
6 0

Answer:

A

Explanation:

because each of the nitrogenous bases can only pair up with one of the other bases.

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Im playing football and my head is starting to hurt is this a sign of a cuncussion
ozzi
If you hit your head hard possibly. if just playing and running no.
7 0
3 years ago
Read 2 more answers
Hydroxylamine is a mutagen that acts only on cytosine and causes C-->T and G-->A base pair changes (i.e. it causes transit
natulia [17]

Options for the question are not given. They are as follows:

a. arg or lys

b. ala

c. thr

d. leu or ser

e. Only termination codons

Answer:

d. leu or ser

Explanation:

Four codons code for proline amino acid. These are CCT, CCC, CCA, and CCG. Hydroxylamine causes C to change into T or G to change into A.

If first position is changed in each codon:

CCT = TCT (UCU)

CCC = TCC (UCC)

CCA = TCA (UCA)

CCG = TCG (UCG)

These codons produce Serine amino acid.

If second position is changed in each codon:

CCT = CTT (CUU)

CCC = CTC (CUC)

CCA = CTA (CUA)

CCG = CTG (CUG)

These codons produce Leucine amino acid.

Hence, out of the given options, option d. leu or ser is correct.

7 0
3 years ago
Water can "defy gravity" and climb uphill? True or false. Why or why not
harina [27]
The answer is actually <u>true</u><u>.</u>

The starting point of all rivers is higher than their end point. However, under the right conditions, small amounts of water can be drawn upwards, against the tug of gravity, through a phenomenon known as "capillary action". For this to occur, however, the water must be confined into a small flow space.

Hope this helps!  If it does, would you mind marking my answer as Brainliest? Thanks :D

3 0
4 years ago
List several processes in cell metabolism where diffusion is important
fiasKO [112]
<span>One process wherein diffusion is important is the concentration of salt within a cell. When the salt levels are too high within the cell, salt molecules are moving via diffusion to a region of lower concentration. Another process is the movement of carbon dioxide in plant cells, where CO2 moves from regions of high concentration to regions of low concentration.</span>
8 0
3 years ago
The density of gas particles in a section of Earth’s atmosphere decreases. Which of the following is the most likely explanation
aalyn [17]

Answer:

<em>A. The air pressure in that section of Earth’s atmosphere decreased. </em>

Explanation:

In the free air, the density of the air diminishes as the air is warmed. On increasing the pressure, the density also increases. The air is packed. The density increments as pressure increments.

The thickness and density of air decline with the increase of height because of that the surface area of the Earth's climate diminishes with increase in height, along these lines gas particles can spread out.

The density of the air is most minimal at a high rise on a hot day when the pressure of the atmosphere is low.

7 0
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