The majority of a shark's brain is devoted to processing signals of:
a. touch.
b. olfaction.
c. taste.
d. electricity.
e. vision.
B
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Answer the following statements true (T) or false (F)
1. Thomas Hunt Morgan was the genetics researcher who discovered X-linked inheritance patterns by studying fruit flies. 2. Linkage maps are diagrams of nitrogen base sequences on DNA. 3. X-linked recessive disorders affect more females than males. 4. A male expresses an X-linked recessive disorder only if he inherits alleles conferring the disorder from both parents. 5. Variants or alternate forms of a gene are called alleles.
In which type of muscle contraction does the load exceed the muscle’s peak capacity?
a. isotonic b. isometric c. isocentric d. eccentric e. concentric
Dennis had a history of heart disease in his family and was reducing his intake of saturated fats. Saturated means each carbon atom is bonded to as many hydrogen atoms as it can accept. If a carbon were bonded to two carbons, how many hydrogens could it accept?
A. 0 B. 1 C. 2 D. 3 E. 4
Which of the following statements about regulation of thyroid hormones is true?
a) TSH positively feeds back on the hypothalamus causing TRH release b) T3 and T4 negatively feed back on the pituitary to reduce TSH release c) T3 and T4 negatively feed back on the pituitary to reduce TRH release d) TSH negatively feeds back on the hypothalamus to reduce TRH release e) Both b and d are true