What is the scientific term for when a plant loses its leaves in the fall, and which hormone triggers this response?

a. thigmotropism, cytokinin
b. photomorphogenesis, gibberelins
c. abscission, auxins
d. dormancy, abscisic acid


c. abscission, auxins

Biology & Microbiology

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Planar molecules used as chemical mutagens are called

A. nitrous oxide. B. base analogs. C. alkylating agents. D. intercalating agents.

Biology & Microbiology

What is represented by the part of the figure labeled as “B”?

a. normal tissue b. cancerous tissue c. adipose tissue d. lymph nodes e. red blood cells

Biology & Microbiology

Which of the following is NOT produced in the

synthesis (light-independent) reactions? a. NADPH b. phosphoglyceric acid (PGA) c. phosphoglyceraldehyde (PGAL) d. glucose e. ribulose bisphosphate

Biology & Microbiology

In the eukaryotic growth factor signal transduction pathway, _____________ is responsible for initiating a cascade of phosphorylation of transcription factors that begin the S phase

a. EGF b. RTK c. RAS d. CNK e. RAF

Biology & Microbiology