The rate of carbon uptake increases only when plants allocate carbon to the production of

A) roots.
B) fruits.
C) leaves and stems.
D) flowers.


C

Biology & Microbiology

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As in the development of computer hardware, interest in large-scale DNA sequencing is stimulating the development of sequencing devices that (select all that apply)

A. are smaller. B. have improved capacity through automation. C. have improved capacity through opensource software development. D. require less energy to operate. E. none of these

Biology & Microbiology

The nonselective movement of water and a number of solutes into excretory system tubules is called --____

a. reabsorption b. excretion c. filtration d. secretion e. diffusion

Biology & Microbiology

Which hormone causes contraction of the uterus?

a. cortisol b. oxytocin c. prostaglandins d. progesterone e. estrogen

Biology & Microbiology

Neurotransmitters act by binding to receptors that are

a. ligand-gated ion channels. b. located in the cytoplasm. c. tyrosine-kinase receptors. d. not coupled to G proteins.

Biology & Microbiology