Which of the following is a key difference between DNA and RNA?(1 point)

Question

Responses

DNA is typically found in the cytoplasm, while RNA is found in the nucleus
DNA is typically found in the cytoplasm, while RNA is found in the nucleus

DNA is single-stranded, while DNA is double-stranded
DNA is single-stranded, while DNA is double-stranded

DNA uses ribose sugar, while RNA uses deoxyribose sugar
DNA uses ribose sugar, while RNA uses deoxyribose sugar

DNA contains thymine, while RNA contains uracil

Answer 1

The key difference between DNA and RNA among the provided options is:

DNA contains thymine, while RNA contains uracil.

In DNA, the base thymine (T) pairs with adenine (A), while in RNA, uracil (U) replaces thymine and pairs with adenine.

Answer 2

Which of the following is NOT a part of a nucleotide?(1 point)
Responses

Nitrogenous base
Nitrogenous base

Phosphate group
Phosphate group

Amino acid
Amino acid

Sugar

Answer 3

The option that is NOT a part of a nucleotide is:

Amino acid

Nucleotides are composed of three components: a nitrogenous base, a phosphate group, and a sugar (deoxyribose in DNA or ribose in RNA). Amino acids, on the other hand, are the building blocks of proteins and are not part of nucleotides.

Answer 4

What is the mRNA complementary strand for the following DNA strand:

ACC GTT AAT

(1 point)
Responses

ACC GTT AAT
ACC GTT AAT

TGG CAA TTA
TGG CAA TTA

CAA UGG CCG
CAA UGG CCG

UGG CAA UUA

Answer 5

To convert the given DNA strand (ACC GTT AAT) into its complementary mRNA strand, you need to use the base pairing rules where adenine (A) pairs with uracil (U) in RNA, thymine (T) in DNA pairs with adenine (A) in RNA, cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C).

Here's the breakdown:

• A (A in DNA) pairs with U (in RNA)
• T (T in DNA) pairs with A (in RNA)
• C (C in DNA) pairs with G (in RNA)
• G (G in DNA) pairs with C (in RNA)

So, for the DNA strand ACC GTT AAT, the complementary mRNA strand will be:

• A -> U
• C -> G
• C -> G
• G -> C
• T -> A
• T -> A
• A -> U
• A -> U
• T -> A

Combining these, we get the mRNA strand:

UGG CAA UUA

Therefore, the correct response is:

UGG CAA UUA

Answer 6

What is transcription?(1 point)
Responses

The process of copying RNA into DNA
The process of copying RNA into DNA

The process of copying DNA into mRNA
The process of copying DNA into mRNA

The process of breaking down RNA into nucleotides
The process of breaking down RNA into nucleotides

The process of translating mRNA into protein

Answer 7

Transcription is defined as:

The process of copying DNA into mRNA.

During transcription, a segment of DNA is used as a template to produce a complementary RNA strand, specifically messenger RNA (mRNA).

Answer 8

What is protein synthesis?(1 point)
Responses

The process of replicating DNA to produce identical copies
The process of replicating DNA to produce identical copies

The process of breaking down proteins into amino acids
The process of breaking down proteins into amino acids

The process of copying DNA into RNA
The process of copying DNA into RNA

The process of creating proteins

Answer 9

Protein synthesis is defined as:

The process of creating proteins.

This process involves two main stages: transcription (where DNA is transcribed into mRNA) and translation (where mRNA is translated into a protein).

Answer 10

Which structure is responsible for protein synthesis?(1 point)
Responses

Golgi apparatus
Golgi apparatus

Mitochondria
Mitochondria

Ribosome
Ribosome

Endoplasmic Reticulum

Answer 11

The structure responsible for protein synthesis is the:

Ribosome.

Ribosomes are the cellular machinery where amino acids are assembled into proteins, following the instructions encoded in the mRNA.