DNA Pretest

Figure 12-1 shows the structure of a(an)

• a. DNA molecule.

• b. amino acid.

• c. RNA molecule.

• d. protein.

Tags

NGSS.HS-LS1-1

Which of the following is a nucleotide found in DNA?

• a. ribose + phosphate group + thymine

• b. ribose + phosphate group + uracil

• c. deoxyribose + phosphate group + uracil

• d. deoxyribose + phosphate group + cytosine

DNA replication results in two DNA molecules,

• a. each with two new strands.

• b. one with two new strands and the other with two original strands.

• c. each with one new strand and one original strand.

• d. each with two original strands.

How many main types of RNA are there?

• a. 1

• b. 3

• c. hundreds

• d. thousands

During transcription, an RNA molecule is formed

• a. that is complementary to of DNA.

• b. that is identical to part of a single strand of DNA.

• c. that is double-stranded.

• d. inside the nucleus.

What does Figure 12-2 show?

• a. The amino acid that is coded by the codon

• b. The amino acid that is coded by the anti-codon

• c. The ribosome bonding pattern

• d. the genetic code for a gene

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

How many codons are needed to specify three amino acids?

• a. 3

• b. 6

• c. 9

• d. 12

What happens during the process of translation?

• a. Messenger RNA is made from DNA.

• b. The cell uses information from messenger RNA to produce proteins.

• c. Transfer RNA is made from messenger RNA.

• d. Copies of DNA molecules are made.

During translation, the type of amino acid that is added to the growing polypeptide depends on the

• a. codon on the mRNA only.

• b. anticodon on the mRNA only.

• c. anticodon on the tRNA to which the amino acid is attached only.

• d. codon on the mRNA and the anticodon on the tRNA to which the amino acid is attached.

Which type(s) of RNA is (are) involved in protein synthesis?

• a. transfer RNA only

• b. messenger RNA only

• c. ribosomal RNA and transfer RNA only

• d. messenger RNA, ribosomal RNA, and transfer RNA