Question

16.the enzyme that is used to join complementary dna nucleotides together
is
a. dna polymerase. b. rna polymerase. c. helicase. d. ribozyme.

1. the function of transfer rna is to

a. carry amino acids to ribosomes.
b. transfer nucleotides to the nucleus.
c. transmit coded information to the cytoplasm.
d. act as the site for protein synthesis.

1. which of the following is not true about rna?

a. rna transfers messages from dna to ribosomes.
b. rna contains the sugar ribose.
c. rna contains uracil.
d. rna forms a double helix.

1. in semi - conservative dna replication, each new double helix formed will

have
a. two new strands and two old strands.
b. one new and one old strand in each helix.
c. three new strands in one helix and three old strands in the second helix.
d. two new strands in one helix and two old strands in the other helix.

1. which rna molecule carries the genetic information as it is needed for t

construction of a protein to the cytoplasm?

Explanation:

• Question 16: DNA polymerase is responsible for joining complementary DNA nucleotides during DNA replication. RNA polymerase is for RNA synthesis, helicase unwinds DNA, and ribozyme is a catalytic RNA.
• Question 17: Transfer RNA (tRNA) carries amino acids to ribosomes for protein synthesis. It doesn't transfer nucleotides to the nucleus (B), mRNA transmits coded information (C), and ribosomes are the site of protein synthesis (D).
• Question 18: RNA is usually single - stranded, while DNA forms a double helix. RNA transfers messages (A), has ribose (B), and uracil (C).
• Question 19: In semi - conservative replication, each new DNA double helix has one old (parent) strand and one new strand.
• Question 20: Messenger RNA (mRNA) carries the genetic information from DNA (in the nucleus) to the cytoplasm for protein construction.

Answer:

1. A. DNA polymerase
2. A. carry amino acids to ribosomes
3. D. RNA forms a double helix
4. B. one new and one old strand in each helix
5. Messenger RNA (mRNA)