Which group of land plants is most restricted to moist environments?

A) Vascular plants
B) Bryophytes
C) Tracheophytes
D) Anthophyta
E) Angiosperms


B

Biology & Microbiology

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fatty acids not produces by the body must be consumed in the diet and are called _______ fatty acids

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The outside of a neuron is positively charged at resting potential. Why do K+ ions leave the cell when K+ channels open during an action potential?

A. Negatively charged proteins leave the cell at the onset of the action potential. B. The diffusion gradient is the only factor that affects ion movement. C. K+ ions are actively pumped out by the sodium-potassium pump acting in reverse. D. Voltage-gated K+ channels open when membrane potential reaches +50 mV during the depolarization phase. The diffusion gradient and electrical force cooperate to drive K+ ions out of the cell.

Biology & Microbiology

What is a property of a pathogenic bacterium?

A) It may produce a protein that interferes with basic cellular functions. B) All strains of the same species are also pathogenic. C) It probably conducts photosynthesis. D) It is resistant to all antibiotics.

Biology & Microbiology

The living cells of cartilage are called

A) osteoblasts. B) osteocytes. C) osteoclasts. D) chondrocytes.

Biology & Microbiology