The pressure needed to stop osmosis is:
What will be an ideal response?
osmotic pressure
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When the population growth of the predator = 0, is the prey population increasing or decreasing?
a. It is always decreasing. b. It is always increasing. c. At the upper point it is decreasing and at the lower point it is increasing. d. At the upper point it is increasing and at the lower point it is decreasing.
Which is not true of the cell cycle?
(a) the cell cycle is controlled by internal/external signals (b) Cyclin is a signaling molecule that increases and decreases as the cycle continues (c) DNA damage can stop the cell cycle at the G1 checkpoint (d) Apoptosis occurs frequently during the cell cycle
What part of the respiratory system does cigarette smoke most adversely affect?
A) alveoli B) trachea C) bronchi D) diaphragm
In the serological method for tissue typing, if human cells expressing HLA-I are mixed with anti-HLA-I, complement, and trypan blue, what would indicate the cells are HLA-I?
A) Enzyme is released from neutrophils. B) Cells are damaged by complement. C) Trypan blue enters the cells. D) Anti-HLA antibodies bind to HLAs on lymphocytes. E) None of the answers are correct; the T cells are missing.