2.2 True/False Questions
1) The smooth ER contains its own molecules of DNA.
2) Hypercholesterolemia is an inherited disease in which the body's cells lack the protein receptors that bind to cholesterol-delivering LDLs.
3) Ribosomes consist of two subunits, each surrounded by a membrane.
4) Peroxisomes are important in detoxification of a number of toxic substances, for instance, hydrogen peroxide.
5) The nucleolus serves as the cell's ribosome-producing machine.
6) Microtubules are composed of actin.
7) Chromatin is composed of DNA wound around proteins known as actin.
8) An example of a type of cell with high rates of mitosis is a cell of the skin.
9) During the S phase, cells are characterized by rapid growth.
10) During the G1 phase, DNA is replicated in the cytoplasm.
11) Telomeres are structures that limit the maximum number of times cells can divide.
12) Extended chromatin is tightly wound around histones.
13) A mitotic spindle develops during early telophase of mitosis.
14) During anaphase, the chromosomes are moved to the center of the cell.
15) Cytokinesis is the physical division of the cytoplasm between the two newly formed cells that result from mitosis.