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GarryVolchara [31]
3 years ago
5

Define mutation by using the phrase DNA code

Biology
2 answers:
STatiana [176]3 years ago
8 0
<span>My answer: Mutations are a change in the genetic structure of a chromosome. Chromosomes contain DNA and RNA, and strands of DNA 'codes' if you will, make up a chromosome.

Hope I helped! :D</span>
Artyom0805 [142]3 years ago
7 0
A mutation is a change in the nucleotide sequence (or DNA Code if you will) of the genome of an organism, virus, or extrachromosomal genetic element.
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How does cystic fibrosis affect meiosis?
Anna007 [38]

Answer:

The defective CFTR protein changes ion influx and efflux across the body's cell membranes, which ultimately changes the internal environment of these cells. This change contributes to each cell's production of proteins through transcription and translation.

Explanation:

The defective CFTR protein changes ion influx and efflux across the body's cell membranes, which ultimately changes the internal environment of these cells. This change contributes to each cell's production of proteins through transcription and translation.

8 0
3 years ago
The adrenal medulla is stimulated to release catecholamines during sympathetic autonomic nervous responses. True or False
forsale [732]

Answer:

True

Explanation:

Catecholamines refer to the hormones produced by the adrenal gland present on the upper side of the kidney. The catecholamine hormone includes the epinephrine, norepinephrine and the dopamine.

During stress conditions, the sympathetic division of the autonomic nervous system gets activated which leads to the release of the norepinephrine from the postganglionic neurons and the prolonged-release leads to the release of the adrenaline from the adrenal glands.

Thus, true is the correct answer.

4 0
3 years ago
Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen
WARRIOR [948]

Answer:

carbohydrates

Explanation:

Organic molecules composed of carbon, hydrogen, and oxygen in a ratio of 2-hydrogen atoms to every 1 oxygen atom.

7 0
3 years ago
Why are pigments such as chlorophyll needed for photosynthesis
Vlad [161]

Answer:

The chlorophyll pigment have photosystem 680/ PS I which captures the sunlight. Then the pigments gets excited and photosynthesis starts. Without chlorophyll photosynthesis can't happen.

Explanation:

Photosynthesis occurs in the chlorophyll pigment of the plant. They have the capacity to trap light energy and convert its energy to form glucose and oxygen.  

The chlorophyll is a double layer membrane structure. In it two photosystems works i.e. photosystem I and photosystem II. In the photosystem I light is trapped.  

In the chlorophyll thylakoids are present which have photosystem 680. It captures the photons coming from the sun. The photons are the light of different wavelengths which are absorbed by plants.  

The photon have more energy, and when it comes in contact with PS 680, the pigments get excited. Then they release high energy electrons which helps to form ATP, NADPH. Because it is a light dependent reaction.

Glucose and oxygen are formed in the stroma as it does not require light. It is a light independent reaction.

Therefore, chlorophyll is first require to capture photons coming from sun.

6 0
3 years ago
Catfish have dorsal fin spines, which help defend against predators, and caudal fins, which help to propel the fish through the
Yuliya22 [10]

Answer:

Swim bladder

Explanation:

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As the fish moves in deeper water, the gas in the swim bladder is contracted which decreases the volume of swim bladder.

3 0
3 years ago
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