In a mycorrhizal relationship, the fungal component can assist in providing phosphorus and water to the plant. The plant in turn provides the fungus with ________.

A. metal cofactors
B. carbon dioxide
C. nitrogen
D. organic carbon


Answer: D

Biology & Microbiology

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Antidiuretic hormone (ADH) functions at the cellular level by _____

A) stimulating the reabsorption of glucose through channel proteins B) triggering the synthesis of an enzyme that makes the phospholipid bilayer more permeable to water C) causing membranes to include more phospholipids that have unsaturated fatty acids D) causing an increase in the number of aquaporin molecules of collecting duct cells E) decreasing the speed at which filtrate flows through the nephron, leading to increased reabsorption of water

Biology & Microbiology

The pH of stomach acids is usually

a. 2. b. 4. c. 7. d. 10. e. 12.

Biology & Microbiology

Why do ferns only thrive in moist environments?

198 Chapter 22 What will be an ideal response?

Biology & Microbiology

What are the correct steps of muscle contraction starting with ACh?a.ACh diffuses across the synaptic cleft.b.The sarcolemma generates an impulse that moves down the T tubules into  the sarcoplasmic reticulum.c.ACh binds to receptors in the sarcolemma.d.The sarcomere contraction produces a myofibril contraction.e.Calcium is released causing the sarcomere contraction.

A. a - c - b - e  - d B. d - a - b - e - c C. a - b - c -e - d D. c - e - d - a - b

Biology & Microbiology