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3 years ago

A strand of DNA, GCT-AAT-GAT, unzips to make mRNA. What is the sequence of the complementary mRNA strand?

Biology

1 answer:

OverLord2011 [107]3 years ago

4 0

Answer:

C. CGA-UUA-CUA

Explanation:

The deoxyribonucleic acid (DNA) is a double helix molecule which is composed of four letters or 'nucleotides': guanine (G), cytosine (C), adenine (A) and thymine (T). The base-pair rules state that in the DNA double helix, G always pairs with C, while A always pairs with T. Moreover, during transcription, a base named uracil (U) replaces T in the resulting RNA sequence. Therefore, in this case, the complementary sequence (i.e., antisense strand) to the mRNA sequence is CGA-UUA-CUA.

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In the carbon cycle, carbon is taken in by plants A) as ammonia in the process of assimilation B) as carbon dioxide in the proce

lora16 [44]

<h2>As carbon dioxide in the process of photosynthesis</h2>

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3 years ago

Are prokaryotic or eukaryotic cells easier to view in a wet mount and why?

Crazy boy [7]

Answer:

Cells are better seen in humid environments since 80% of their composition is water.

Explanation:

These cells have most of their composition made up of water, that is why when viewed in humid environments they maintain the micro and macrostructure of both the cell and the organelles.

This is how the structures of these cells are best perceived, it depends on their sizes if an electronic or optical microscope is used.

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3 years ago

If a child has Bb alleles, being brown is the recessive eye color and blue is the dominant eye color, what eye color would the c

kolbaska11 [484]

Answer:

I feel the child will have blue eyes but have the allele for brown eyes.

Explanation:

Seeing as blue eyes is dominant (B) and brown is recessive (b), the child should have blue eyes with the allele for brown so that child's children might have brown eyes.

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2 years ago

Some key innovations in the evolution of eukaryotes from a prokaryotic ancestor are membrane-bound organelles. Which of the foll

tester [92]

Answer:

Ribosomes

Explanation:

Ribosomes are structures in charge of manufacturing proteins, every cell needs to have proteins. They can be found in prokaryotic and eukaryotic cells. On the other hand, chloroplasts, mitochondria and nuclear envelope are not found in prokaryotic cells.

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3 years ago

A mother asks the nurse how to swaddle her newborn because she heard that it helps infants calm down. Which statement will the n

fenix001 [56]

Answer:

The nurse should include the following;

Swaddling is the method of wrapping the baby in cloth e.g blanket, to create comfort, warmth, calmness and to make them feel secured.

Physiologically, peripheral cyanosis is common to new born hands and feets,This is because the<u> baby's circulatory system is not fully developed.</u>This old technique provides warmth for the limbs of the baby to maintain even distribution of heat energy in the body.

<u>Other benefits of Swaddling</u>

It induces sleep in babies

It reduces startle reflex, because baby’s limbs are rap up and immobile therefore no free movement which may promote startle reflex.

<u>How to swaddle a baby</u>

The blanket should be spread out in diamond shape, A corner of the blanket should point upwards, while the top corner should be folded down to the short height of 6 inches.

The baby should be placed in supine position, with the head on the folded top corner, while the remaining body parts occupies the full length of the blanket.

The left side of the blanket should be wrapped over the left arm and chest. while the other part of the blanket should be inserted under the right arm and back . This leaves the baby’s right arm free.

Risk.

The wrapping should not be tight. Enough rooms should be given to the limbs of the baby to allow bending of the limbs. Baby should be able to bend her legs up and stretch out of the hip

Explanation:

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3 years ago