Long-distance electrical signaling in the phloem has been shown to elicit a change in all of the following except
A) rapid leaf movement.
B) gene transcription.
C) a switch from C4 to C3 photosynthesis.
D) gene transcription.
E) phloem unloading
Answer: C) a switch from C4 to C3 photosynthesis.
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The first step in the Calvin cycle is the attachment of carbon dioxide to:
a. Rubisco. b. glyceraldehyde 3-phosphate (G3P). c. phosphoglycerate d. RuBP (ribulose bisphosphate). e. ATP.
What compounds or probes could you use to investigate (a) G-protein–mediated signal transduction, (b) nitric oxide signal transduction, and (c) calcium ion-dependent fluxes and effects
What will be an ideal response?
In a well-fed human eating a Western diet, the richest source of stored chemical energy in the body is _____
A) fat in adipose tissue B) glucose in the blood C) protein in muscle cells D) glycogen in muscle cells
Paramecia use cilia for locomotion and for gathering organic matter. How are rotifers similar?
A. Rotifers and ciliates are thought to have given rise to all other animal phyla. B. The corona is made of cilia, and used for swimming and feeding. C. Both lack a gut. D. Rotifers are single-celled protists.