The close proximity of capillaries to the alveoli in lungs improve respiratory efficiency by ________.
A. increasing the surface area for diffusion
B. decreasing the distance for diffusion
C. changing the diffusion constant
D. increasing the concentration difference
Answer: B
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Which of the following specialized structures/inclusions would aquatic photoautotrophic bacteria likely possess?
1. Thylakoids 2. PHB Granules 3. Carboxysomes 4. Gas vacuoles 5. Chloroplasts
Despite selection against chromosomal variations,
A) related species almost always have the same karyo type. B) related species almost always have different karyo types. C) closely related species diverge by many chromosomal rearrangements. D) distantly related species diverge by only a few chromosomal rearrangements.
A short segment of DNA that contains the code or blueprint for one or more proteins is called a gene
Indicate whether the statement is true or false
During the follicular phase of the female menstrual cycle, estrogen is produced by the
A. follicle cells. B. anterior pituitary. C. developing zygote. D. uterus.