Paracrine signaling is
1.a type of communication by direct contact.
2.a type of communication by local signaling.
3.a type of signaling that affects the cell that sent the signal.
4.a type of long distance signaling.
5.a type of transduction.
2
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Based on the graph below, the color of male guppies can be seen as a balance between positive and negative selections. Bright colors are an advantage in _____, but a disadvantage in _____.
A. attracting mates; avoiding predators
B. attracting mates; finding food
C. finding food; attracting mates
D. avoiding predators; attracting mates
E. avoiding predators; finding food
Over ____ of analytes in plant samples identified from mass spectrometry are classified as “unknown”
a. 6% b. 16% c. 46% d. 60% e. 96%
Which of the following microbial forms has the highest resistance to physical and chemical controls?
A. Protozoan cysts B. Bacterial endospores C. Yeast D. Naked viruses E. Fungal spores
Refer to Figure 50-4. Which of the following statements concerning the corpus luteum is false?
a. It is responsible for the second peak in the line labeled 1. b. It is responsible for the second peak in the line labeled 2. c. It is responsible for the first peak in the line labeled 1. d. It develops from the empty follicle following ovulation. e. It is most active between days 18 to 26.