An oligotrophic ecosystem would be most likely to exist in a/an ________

a) Ocean
b) High mountain lake
c) Tropical pond
d) Polluted river


Answer: b) High mountain lake

Biology & Microbiology

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The number of neural cells in the cerebral cortex decreases during the aging process.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Which of the following represents the overall sequence of events during mitosis?

a. prophase ? metaphase ? anaphase ? telophase b. interphase ? metaphase ? anaphase ? telophase c. anaphase ? telophase ? metaphase ? interphase d. interphase ? prophase ? anaphase ? metaphase e. metaphase ? telophase ? anaphase ? prophase

Biology & Microbiology

The initiation of the S phase and the M phase of the cell cycle depends on a pair of molecules called _______ and _______.

a. actin; myosin b. Cdk's; cyclin c. ligand; receptor d. MSH; MSH-receptor e. ATP; ATPase

Biology & Microbiology

Animals are thought to have descended from choanoflagellate protists. Which poriferan cell type lends evidence to this claim?

A. Amoebocyte B. Gamete C. Choanocyte D. Spicule

Biology & Microbiology