For roundworms living in the intestine of a

vertebrate, the cuticle most probably serves in
what capacity?
a. water retention
b. nutrient absorption
c. protection from digestive enzymes
d. excretion of metabolic wastes
e. sensory detection


C

Biology & Microbiology

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What is anaerobic fermentation?

A. A process that releases energy from food in the absence of oxygen B. A process that releases energy from food in the presence of oxygen C. A process that releases energy from food only found in bacteria D. A process that releases energy from food that is more efficient than aerobic respiration

Biology & Microbiology

Genetic changes, under control of the Paax6 gene, led to



A. the evolution of one type of eye.
B. one photoreceptor in each modern eye.
C. the evolution of many types of eyes using ommatidia and simple eye structures.
D. a cluster of photoreceptor cells in every eye.
E. none of these are correct

Biology & Microbiology

In humans, skin color is controlled by several genes. Thus, skin color is a(n) ____ characteristic

a. dominant b. co-dominant c. epistatic d. pleiotropic

Biology & Microbiology

All of the following are terrestrial biomes EXCEPT

A. lentic systems. B. tundra. C. deserts. D. savannas. E. coniferous forests.

Biology & Microbiology