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snow_tiger [21]
3 years ago
9

What happens during the transcription?

Biology
1 answer:
ale4655 [162]3 years ago
6 0

Answer:a). mRNA is formed by copying a gene on one of the DNA strands

Explanation: Transcription is a process in which the nucleotide sequence in one strand of a double stranded DNA is converted to an mRNA. The genetic information in a DNA is copied into an mRNA. The mRNA produced is not the same with the DNA in base composition and sequence rather the mRNA is complementary to the DNA strand. In DNA, adenine, guanine, cytosine and thymine are found but in the mRNA adenine, guanine, cytosine and Uracil are found. In mRNA base pairing, adenine pairs with uracil while guanine pairs with cytosine.

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I don't understanding this as much
algol13
I am thinking D. But I am not sure that it is the answer.
7 0
4 years ago
Any stimulus that opens a ________ ion channel will produce a graded potential.
Fiesta28 [93]

E) All of the answers are correct.

Ion channels are proteins located in the membrane that allow ions to pass through the channel pore. Ion channels can be classified (by what opens and closes the channels) into few groups:

• Voltage-gated channels-open and close in response to membrane potential

Examples: Voltage-gated proton channels, Voltage-gated sodium channels, Voltage-gated potassium channels

• Ligand-gated (neurotransmitter) or ionotropic receptors (ligand binds to extracellular domain of the receptor

Examples: "nicotinic" Acetylcholine receptor, ionotropic glutamate-gated receptors

• Lipid-gated- lipid molecules bind to the  transmembrane domain of the channel

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7 0
3 years ago
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Feliz [49]

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<u>lysosomes</u>

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4 years ago
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Diano4ka-milaya [45]

Answer:

stroma

Explanation:

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