Biology B Review

Gene expression is the ability for a gene to be:

• in the genome.

• transcribed.

• non-coding.

• a dominant allele.

Which of the following is correct?

• Nucleotide triplets code a single amino acid.

• Each amino acid codes a nucleotide.

• Each nucleotide codes an amino acid.

• Amino acid triplets code a single nucleotide.

Translation is a process where:

• a polypeptide sequence is produced from a sequence of rRNA codons.

• a polypeptide sequence is produced from a sequence of tRNA codons.

• a polypeptide sequence is produced from a sequence of mRNA codons.

• a DNA nucleotide sequence is used to produce mRNA codon sequence.

Which sequence of complementary DNA bases would pair with this partial strand
ATG TGA CAG?

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of _________.

• cytosine
• guanine
• thymine
• uracil

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Where is DNA and RNA made?

• nucleus

• cytoplasm

• mitochondria

• ER

What is the correct order to make a protein?

• Protein, DNA, RNA

• RNA, DNA, Protein

• DNA, RNA, Protein

• Protein, RNA, DNA

If a cell undergoes mitosis repeatedly, but does not undergo cytokinesis, predict what the cells would look like:

• Many individual cells each with their own nucleus.

• One large cell with many nuclei.

• Two large cells with many nuclei in each cell.

• Many individual cells, each lacking a nucleus.

Before mitosis a human kidney cell has 46 chromosomes. After mitosis, the two daughter cells will each have _______ chromosomes.

• 23

• 46

• 92

• a different number of