Which of the following features would tend to promote water retention by the kidney?
a. many nephridia
b. a long loop of Henle
c. a long proximal tubule
d. a short distal tubule
e. a high filtration rate
B
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If you wanted to increase the cation exchange and water retention capacity of loamy soil, you should _____
A) adjust the soil pH to 7.9 B) add clay to the soil C) practice no-till agriculture D) add fertilizer containing potassium, calcium, and magnesium to the soil E) increase the number of sand particles in the soil
What would be an expected feature of a plasma membrane that had no integral membrane proteins?
A. The membrane would be unable to transport sodium ions B. The membrane would collapse C. The membrane would have no fluidity D. The membrane would have no cholesterol E. The membrane would not associate with peripheral membrane proteins
The plant hormone ____ trigger plant responses to environmental stresses such as cold snaps, high salinity, and
drought.
a. abscisic acid b. cytokinin c. oligosaccharin d. jasmonate e. ethylene
A bacterium is an example of a
a. prokaryotic cell. b. eukaryotic cell. c. plant cell. d. all of the above.