D. GAUCCA. Figure 8 - 1
The following graph records the amount of DNA
in cells that have been grown in a cell culture in
synchrony so that all the cells are at the same phase.
Change in DNA content per cell
0.5
0.4
0.3
17. Refer to Figure 8-1. During which hours
were the cells carrying out cell division (mitosis)
a. 12-14
b. 8-10
C. 0-8
d. 14-20
02
20.1
0
10
14
18
22
26
Tima (hours)

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations. for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

Nerve cells are specialized to respond to stimulitrue or false?

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it