Which of the following is a benefit of a nematode’s cuticle?
a. protecting against predators
b. promoting rapid growth
c. ensuring efficient digestion
d. maintaining a stable temperature
a. protecting against predators
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A woman who is heterozygous for an allele that results in X-linked pattern baldness marries a man who is nonbald. Which of the following would be true of their offspring?
A. All would be bald B. All of the females would be nonbald, all males would be bald C. All of the females would be nonbald, ½ of the males would be bald D. ½ of females would be bald, and ½ of the males would be bald E. All would be nonbald
The macromolecule that can accomplish the widest range of biological functions are
A. carbohydrates. B. proteins. C. nucleic acids. D. lipids. E. glycolipids.
With sexual reproduction, two genes for the same
trait that are slightly different are called __________. Fill in the blank(s) with the appropriate word(s).
Answer the following questions true (T) or false (F)
1. Contraction of the diaphragm causes exhalation to occur. 2. Pulmonary ventilation occurs because of pressure differences between the lungs and the external environment. 3. Digestion is a process of mechanical and chemical breakdown of larger food molecules into smaller ones that can be absorbed.