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3 years ago

Which set of materials would be best to use to prepare a wet mount slide of onion skin cells?

1 answer:

8 0

The best set of materials to prepare a wet mount slide of onion skin cells are as follows:

a glass slide, stain, forceps, dropper, a toothpick, and a beaker filled halfway with water.

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What happens during the initiation step of DNA transcription? A ribosome attaches to the initiation codon of a completed mRNA st

Amanda [17]

Answer:

A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.

Explanation:

Transcription is the process in which DNA template is used to synthesize mRNA.

There are three steps of transcription:

Initiation

It is the process in which a portion of DNA unwinds and RNA polymerase binds to the promotor region on the DNA.

Elongation

It is the process in which RNA polymerase moves along the DNA template and synthesizes mRNA. During this process, unwinding of double stranded DNA takes place.

Termination

As the RNA polymerase moves along the DNA template, it finally reaches a termination signal and then stops synthesizing. It is followed by the detachment of the newly formed mRNA and RNA polymerase from the DNA.

QUESTION:

A ribosome attaches to the initiation codon of a completed mRNA strand.

This is the incorrect answer choice as this process does not happen in the process of transcription. This event happens in the process of translation in which mRNA is used to synthesize proteins or amino acids. mRNA attaches to ribosome during this process.

RNA polymerase moves along the template strand of the DNA creating an mRNA strand.

This is the incorrect answer choice as this event takes place in the process of elongation.

A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.

This is the correct answer choice as this event takes place in the process of initiation of transcription

The mRNA detaches from the RNA polymerase as the RNA polymerase leaves the DNA strand.

This is the incorrect answer choice. This event takes place in the event of termination of transcription.

3 0

3 years ago

Each gene in the human genome codes for a single protein. True or False?

d1i1m1o1n [39]

The statement " Each gene in the human genome codes for a single protein. "is just wrong, as according to the basic knowledge of human genome, only about 2 percent of the genome codes for proteins. This answer does make difference and clearly explaines why the previous one is wrong. Hope you will find it helpful!

7 0

3 years ago

Which of the following is a correct statement about the endocrine system?

Gnesinka [82]

<h3>Answer;</h3>

The adrenal glands sit on top of the kidneys and release adrenaline, which affects heart rate.

<h3>Explanation;</h3>

Adrenal glands are located at the top of each kidney. They produce hormones that help the body control blood sugar, burn protein and fat, react to stressors like a major illness or injury, and regulate blood pressure.
The Adrenal glands are made up of two regions; the adrenal cortex and the adrenal medulla. The adrenal medulla produces hormones adrenaline also epinephrine and noradrenaline also norepinephrine.
Hormone adrenaline rapidly responds to stress by increasing your heart rate and rushing blood to the muscles and brain.

5 0

3 years ago

Is it possible to be a chordate and not have a backbone

tatuchka [14]

No it’s not possible....

7 0

3 years ago

In which eukaryotic organelle are various macromolecules broken down and destroyed?.

djverab [1.8K]

The Answer:

Lysosome.

8 0

2 years ago