The placement of chromosomes into one of the seven groups in a karyotype is based on the
chromosome's
A. size.
B. centromere position.
C. banding pattern.
D. size and centromere position only.
E. all of these.
D
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Referring to the illustration, what activates the cyclin/Cdk complex?
a. binding between them
b. target protein
c. kinase
d. cyclin/Cdk is not activated
An advantage of sexual reproduction is:
a. a large number of offspring. b. genetically diverse offspring. c. offspring that are specially adapted to the stable environment of their parents. d. offspring that are genetically identical to the parents.
Which of the following statements about the sodium-potassium pump is true?
a. It transports hydrogen ions out of the cell. b. It transports 3 sodium ions out of the cell in exchange for 2 potassium ions. c. It transports 2 sodium ions out of the cell in exchange for 2 potassium ions. d. It transports 2 sodium ions out of the cell in exchange for 3 potassium ions. e. It transports water directly out of the cell.
Which of the following types of processing does eukaryotic mRNA NOT undergo before it becomes
functional? a. splicing b. capping c. polyadenylation d. removal of introns e. protein proteolysis