Which of these is not an adaptation for flight found in most modern day birds?
1.feathers
2.high metabolic rate
3.no urinary bladder
4.three-chambered heart
4
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Day-neutral plants are:
a. short-day plants b. able to bloom when they mature, regardless of night length c. night-blooming plants d. triggered to bloom by cold weather e. long-day plants
Signaling by the steroid hormone estrogen is an example of _______ signaling.
a. autocrine b. endocrine c. paracrine d. direct cell-to-cell
The following are characteristics of Chlamydias except
A. they are gram negative. B. elementary bodies are the infectious form. C. reticulate bodies differentiate into elementary bodies. D. elementary bodies are metabolically active. E. they are obligate intracellular parasites that need host cells for growth.
What distinguishing feature characterizes aerobic and anaerobic respiration but does not play a role in fermentation pathways?
A. Oxidation-reduction reactions B. The presence of an electron transport chain C. Hydrolysis reactions D. The absence of O2