Question

There are 64 mRNA codons which are used to synthesis proteins.

Question 24 options:

	A) True
	B) False

If 30% of an organism's DNA is thymine, then 30% is guanine.

Question 20 options:

	A) True
	B) False

1. How many base pairs are in DNA.

2. The __________ of a virus is enclosed by a _______capsid

options:

	membrane; protein
	nucleic acid; membrane
	protein; nucleic acid
	nucleic acid; protein

3. All bacteria are pathogenic to humans.

	True
	False

4.

DNA polymerase is an important enzyme in the synthesis of mRNA

Question 21 options:

	A) True
	B) False

5. Protein synthesis is a two step process which takes information from DNA and uses it to construct a molecule of protein.

Question 23 options:

	A) True
	B) False

Answer 1

24.

The correct option is A - True

There are 64 codons of mRNA that are used to synthesize proteins. Among 64 mRNA codons, 61 codons codes for amino acids and 3 mRNA codons do not code for any amino acids. The 3 mRNA codons are stop codons that signal the termination of protein synthesis

20.

The correct option is B - False

The four bases in DNA are adenine, cytosine, guanine, and thymine. Adenine always binds with thymine and guanine always binds with cytosine. As per the Chargaff's rule, the amount of adenine is equal to the amount of thymine. The amount of guanine equals to the amount of cytosine. The total amount of purines equals to the total amount of pyrimidines. If the Thymine is 30% in DNA, then Adenine is 30%, Guanine is 20% and Cytosine is 20%

1.

There are four base pairs in DNA. A DNA molecule has two strands. Each strand has four nucleotides. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine. Adenine (A) always binds with thymine (T) and guanine (G) always binds with cytosine (C). The total number of base pairs is equal to the number of nucleotides in one of the strands.

2.

The answer is 4th option - nucleic acid, protein

The genetic material of a virus is enclosed by an outer layer made of protein. The nucleic acid of a virus is either DNA or RNA. The nucleic acid of a virus is surrounded by a protein protective coat called a capsid

3.

The correct option is B - False

Most bacteria are not pathogenic

4.

The correct option is B - False

DNA polymerase is an enzyme involved in DNA replication.RNA polymerase is the enzyme that involved in the synthesis of mRNA from DNA template during transcription

5.

The correct option is A - True

Transcription and translation are the two processes that are used to synthesize a protein molecule from DNA