The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of:
A) 0.1 µm to 10 µm.
B) 0.3 µm to 30 µm.
C) 0.3 µm to 100 µm.
D) 1 µm to 100 µm.
E) 1 µm to 300 µm
Ans: C) 0.3 µm to 100 µm.
You might also like to view...
The membranes of winter wheat are able to remain fluid when it is extremely cold by _____
A) increasing the percentage of unsaturated phospholipids in the membrane B) increasing the percentage of cholesterol molecules in the membrane C) decreasing the number of hydrophobic proteins in the membrane D) cotransport of glucose and hydrogen E) using active transport
Which of the following best defines sympatric speciation?
a. speciation that occurs in the same location b. speciation that results from allele mutation c. speciation that occurs in analogous structures d. speciation that results from a geographic separation
Which of the following structures represents the yolk sac?
a. A b. B c. C d. D e. E
What would a nerve poison that blocked neurotransmitter receptors on the dendrites do?
A) It would cause continued stimulation of the membrane of the receiving neuron. B) It would prevent transmission across the synaptic cleft. C) It would inhibit the regeneration of neurotransmitter for use by the synaptic knobs. D) It would inactivate the enzyme that degrades the neurotransmitter.