The specific white blood cells that HIV attaches to are the ________ cells.
A. CD4+
B. gp120-T
C. CD8-T
D. CCR5-T
E. CXCR4-T
Answer: A
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If solution of A is hypotonic to B, then the direction of net movement of water is B to A
__________________ Indicate whether the statement is true or false.
Biological membranes contain bilayers containing mostly ________.
A. cholesterol B. oils C. phospholipids D. triglycerides E. prostaglandins
Evolutionary fitness is measured by
a. physical strength b. reproductive success c. length of life d. resistance to disease e. competitiveness
What would be revealed in a comparison of mitosis and cytokinesis in animal cells and plant cells?
a. A cleavage furrow is initiated in animal cells, while a cell plate begins to form in plant cells during telophase. b. The nuclear envelope disintegrates in prophase in animal cells, but remains intact in plant cells. c. Sister chromatids are identical in animal cells, but they differ from one another in plants. d. In animal cells, chromosomes do not become attached to the spindle until anaphase, whereas chromosom