If a cell has a normal osmotic pressure of 4500 mmHg and is placed into a solution with an osmotic pressure of 3500 mmHg, what will happen to the cell?
A. The cell will lose water and its osmotic pressure will decrease.
B. The cell will gain water and its osmotic pressure will decrease.
C. The cell will lose water and its osmotic pressure will increase.
D. The cell will gain water and its osmotic pressure will increase.
Answer: B
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Four of the following statements about mycorrhizae are true. Which one is the exception?
a. They benefit plant growth. b. They are an example of mutualism. c. They provide nutrients to their plant partner through photosynthesis. d. They increase the root surface area for absorption. e. They receive sugars from their plant partners.
The procedure in which amniotic fluid is withdrawn and analyzed for fetal cell abnormalities is called
a. chorionic villus sampling. b. preimplantation diagnosis. c. amniocentesis. d. fetoscopy. e. senescence.
The female gametophyte of angiosperms is made up of eight diploid cells and one haploid egg cell
Indicate whether the statement is true or false
Cytokinesis in animal cells involves the formation of a/an:
a. oncogene b. cell plate c. cleavage furrow d. sister chromatid