Connect A&P Practice Test 4
Which of the following DNA sequences is complementary to 5' TAGAC 3'?
5' GTCTA 3'
If a protein is 100 amino acids, during translation how many of these entered via the A site of the ribosome?
99
Transcription occurs when __________.
A messenger RNA molecule is synthesized from DNA in the nucleus
What is the production of translation?
A newly synthesized polypeptide
During mitosis, the division of the cytoplasm is called __________.
Cytokinesis
Which of the following DNA molecules is the most stable?
GCGTGCACCGCACGTG
The enzyme __________ unzips and unwinds the DNA molecule.
Helicase
Where in the cell does transcription occur?
In the nucleus
The mitotic spindle fibers attach to chromosomes via special structures called _____________.
Kinetochores
DNA is a polymer of __________, which consist of a sugar, a phosphate group, and a __________.
Nucleotides; nitrogenous base
The amino acids carried by the tRNA are eventually joined to one another by ________ bonds.
Peptide
Which of the following represents the structure of a nucleotide?
Phosphate-sugar base
Translation is the synthesis of __________.
Proteins from mRNA
Which of the following combinations are correctly matched?
Ribosome—protein synthesis
DNA replication is said to be _____________.
Semiconservative
Which of the following events does NOT occur in prophase of mitosis?
The chromosomes are replicated
Which of the following statements about DNA replication is TRUE?
The leading strand is replicated continuously, while the lagging strand is replicated discontinuously.
Which of the following is the template for transcription?
The molecule that carries base triplets
According to the law of complementary base pairing, which of the following statements about double-stranded DNA is TRUE?
The number of A = T and C = G and the number of A + G = C + T
How does DNA influence the synthesis of lipids, carbohydrates, and steroids?
The proteins that DNA codes for catalyze the reactions that synthesize these compounds
What happens when a stop codon is encountered in the mRNA?
The ribosomal complex falls apart and the protein is released into the cell
Which of the following occurs as the ribosome shifts down the mRNA by a distance of one codon?
The tRNA that was in the A site moves into the P site.
Which of the following occurs as the ribosome shifts down the mRNA by a distance of three nucleotides?
The tRNA that was in the P sites moves into the E site
Which of the following statements about microtubules during anaphase is true?
Those attached chromosomes shorten, while those that are unattached elongate
What is the product of transcription?
mRNA
