IP3 binds to _____ receptors.

A. phospholipase type-I
B. G-protein coupled
C. ligand-gated Ca2+ channel
D. sensor kinase
E. enzyme-linked


C. ligand-gated Ca2+ channel

Biology & Microbiology

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Before photosynthetic cells became abundant, were not widespread.

A. cells using aerobic respiration B. chemoautotrophs C. cyanobacteria D. heterotrophs E. cells using anaerobic respiration

Biology & Microbiology

Paired homologous chromosomes are found at the center of the cell during _____ of meiosis

a. metaphase I b. telophase I c. prophase II d. metaphase II

e. anaphase II

Biology & Microbiology

At high population density, __________ is favored,

investing more time and energy in fewer, higher quality offspring. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Usually, the first procedure a genetic counselor performs for a client is

A. amniocentesis or CVS. B. taking a karyotype. C. biochemical testing. D. constructing a pedigree. E. ultrasonic imaging.

Biology & Microbiology