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 the fungal hyphae are genetically the same.
B. heterokaryotic means that the nuclei of each compartment of the hyphae are genetically distinct.
C. heterokaryotic means that each compartment of the hyphae contain two distinct nuclei.
D. heterokaryotic means that each compartment of the hyphae contains only one nucleus.
B. heterokaryotic means that the nuclei of each compartment of the hyphae are genetically distinct.
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When photosynthesis is fully operational under conditions of intense light, the pH of the thylakoid lumen may be as much as three full pH units lower than the stroma of the chloroplast
That means that there are __________________ hydrogen ions in the thylakoid compared to the stroma. A. 1,000 times more B. 100 times more C. 3 times more D. 3 times fewer
In the water cycle approximately what percent of water evaporates from the surfaces of plant leaves?
a. 10 b. 22 c. 48 d. 70 e. 90
The basic method of genetic analysis in humans requires a(n) ____________________ of several generations. What will be an ideal response?
Which of the following statements regarding the properties of water is FALSE?
A. Solid water (ice) is less dense than liquid water. B. The oxygen atom in water has a high electronegativity. C. Water is a polar molecule. D. Water is a poor solvent.