quiz

Question 1

in a G protein linked receptor signal transduction pathway, the gene protein is activated when

Answer 1

its ligand binds to it and the G protein is transported to the nucleus

Question 2

in cell signaling, how is the flow of specific ions regulated

Answer 2

opening and closing of ligand-gated ion channels

Question 3

Many signal transduction pathways use second messengers to

Answer 3

Relay the message from the inside of the membrane throughout the cytoplasm

Question 4

If chemical signals in the cytoplasm control the progression of a cell to the M phase would most likely result in the

Answer 4

Condensation of chromatin in preparation of the nuclear division in both cells

Question 5

If the S phase were eliminated from the cell cycle, the daughter cell would

Answer 5

Have half the genetic material found in the parent cell

Question 6

Shows the number of chromosomes observed in an activity dividing human cell at each stage of cell division. Which of the following presents a correct interpretation of the changes in chromosome number

Answer 6

chromosomes enter metaphase containing two chromatids attached by a centromere. During anaphase the chromatids are separated, each becoming a chromosome. Cytokineses distributes the chromosomes into two separate cells.