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3 years ago

Pl

Biology

1 answer:

dexar [7]3 years ago

4 0

Answer:

Retrovirus

Explanation:

Reverse transcriptase is a type of enzyme which is present in many RNA based viruses such as retrovirus that are found in humans. Reterovirus uses reverse transcriptase enzyme in order to change their single stranded DNA into double stranded DNA. The process of such type of conversion is called reverse transcription. In viruses such as reterovirus, reverse transcriptase allows the virus to insert its DNA to the host cell's DNA, which helps the virus to produce more viruses.

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In the following pie chart, which of the following represents the amount of Earth's surface water that is not located in the oce

Temka [501]

Answer:

C) A, B, and C

Explanation:

The amount of Earth's surface water that is not located in the oceans is the addition of A, B, and C in the pie chart.

About 71% of the Earth's surface is covered by water. The ocean has been reported to hold about 97% of all the water on earth while water present in air, rivers, lakes, glaciers and biological systems constitute the remaining percentage.

<em>From the chart, D can be said to represent the amount of earth's surface water held by oceans while the rest (A, B, and C) can be said to be the amount of Earth's surface water that is not located in the oceans.</em>

The correct option is C.

7 0

3 years ago

Read 2 more answers

In Drosophila, the genes for body coloration and eye size are on different chromosomes. Normal-colored bodies are dominant to eb

Yuri [45]

Answer:

225 flies

Explanation:

Let gene for body colour : A

Let gene for eye type : B

Parent 1 : normal body and normal eyes = AABB

Parent 2: ebony body and eyeless = aabb

F1 : AABB X aabb = AaBb ( all have normal body and normal eye )

F1 progeny is self crossed given that the two genes are on different chromosomes which means they show independent assortment:

AaBb X AaBb =

A_B_ = normal body, normal eyes = 9

aaB_ = ebony body, normal eyes = 3

A_bb = normal body, eyeless = 3

aabb = ebony body, eyeless = 1

Hence the ratio is 9 : 3 : 3 : 1

Out of the 400 flies:

(9/16) * 400 = 225 flies have normal body colour and normal eyes

7 0

3 years ago

Why are enzymes found in lysosomes?

coldgirl [10]

Lysosomes are subcallular organelles which perform many important cellular functions

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3 years ago

What are chromosomes ?

aivan3 [116]

Answer:

Chromosome are part of DNA cells and threads like structure which contains the human genetic coded information for the humans . humans have total 46 chromosomes .

Explanation:

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2 years ago

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pochemuha

Answer:

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3 years ago