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andreev551 [17]
3 years ago
9

In figuer 23-3, witch letter points to the structure through witch water is lost during transportation?A)D)E)F)

Biology
1 answer:
vichka [17]3 years ago
6 0

Answer:D becz it is acurit

Explanation:

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Describe the steps in transcription that require complementary base pairing.
nalin [4]

Answer:

Explanation:

Transcription takes place in nucleus in the presence of the enzyme RNA polymerase.

During transcription, the code present in DNA gets transcribed into the code in mRNA.  (messenger RNA)

RNA even though is a single stranded shows base pairing.

The pre-mRNA gets created from the DNA.

DNA has two strands, one of these strands acts as coding and another non coding strand.

The DNA shows base pairing with AGTC.   [A-Adenine, G- Guanine, T-Thymine and C- Cytosine]

Whereas mRNA base pairing with AGUC.  [ U- Uracil ]

Here in mRNA, instead of thymine, uracil gets paired.

According to base pairing of coding strand/sense strand of DNA, complementary bases pairs in 5'---->3' direction in mRNA.

The mRNA created looks exactly like the non-coding strand/sense strand of DNA except instead of thymine, uracil gets replaced.

The pre-RNA undergoes splicing, capping and tailing to form mature mRNA.

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Would chromosome number have an effect on natural selection in a subspecies of giraffes?
dmitriy555 [2]

Answer:

Yes

Explanation:

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3 years ago
Describe the path of an impulse associated with lifting your arm. What part of the brain starts this impulse?
timama [110]
Sensory nerves that are part of the peripheral nervous see your arm. Nerve impulses are brought to the brain by interneurons and the brain processes the information and you decide to lift your arm. Nerve impulses from the brain travel again through internuerons and into motor nerves that control the movement of your arm.
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There are amphibians that are even larger than bullfrogs. Which of the following could explain how such a large amphibium could
Cloud [144]

Answer:

a. different shape (e.g. flat or ribbon shaped).

d. larger internal surface area of the lungs.

Explanation:

Amphibians are cold blooded animals. They have a low rate of metabolism . Amphibians are located most where there is water or in moist environment because of their skin and how important it is to keep their skin moist.

Amphibians breathe through their skin and this can be called cutaneous respiration. Their lungs are not well developed therefore they undergo a very slow diffusion of oxygen through their blood.

For Amphibians that are larger than bull frogs, they obtain a very sufficient rate of diffusion of gases due to the following reasons:

a. Internal surface area of the lungs: Amphibians that are larger than bull frogs tend to have a more developed respiratory organs which means there lungs have a larger surface area and they are well developed.

b. They have a different body shape: Amphibians larger than bull frogs could have a flat or ribbon shape and their body shapes make it easier for respiratory gases like oxygen to permeate or enter their skin easily.

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In addition to seeds, which of the following characteristics are unique to the seed-producing plants?
Y_Kistochka [10]

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