Refer to the accompanying figure. Which of these lungs would be found in reptiles?
a. 1 only
b. 2 only
c. 3 only
d. 4 only
e. both 1 and 2
d
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A nonprotein component of an enzyme that is usually a metal ion or small organic molecule is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
The directional growth response of plants to touch is called
A. phototropism. B. gravitropism. C. thigmotropism. D. photoperiodism. E. thermotropism.
Suicide genes can be controlled by the fimbriae-gene operator. This would result in the death of
A) All cells. B) Cells making flagella. C) Cells making fimbriae. D) Cells at 37°C. E) Conjugating cells.
A mycologist visits your biology class and discusses her research on a particular fungus that lives on the bark of damaged spruce trees. She explains that the fungal hyphae of her research organism is heterokaryotic. You raise your hand and request that she define that word. Her correct response is
A. heterokaryotic means that the nuclei of each compartment of the hyphae are genetically distinct. B. heterokaryotic means that each compartment of the hyphae contain two distinct nuclei. C. heterokaryotic means that each compartment of the hyphae contains only one nucleus. D. heterokaryotic means that the nuclei of the fungal hyphae are genetically the same.