The sebaceous glands associated with hair follicles produce ________

A) sweat
B) sebum
C) androgens
D) keratin


B

Biology & Microbiology

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Which one of the following complexes does not actively move protons from the mitochondrial matrix to the intermembrane space?

A. Complex I B. Complex II C. Complex III D. Complex IV E. All four complexes actively move protons from the mitochondrial matrix to the intermembrane space.

Biology & Microbiology

Our ancestors most likely came from

a. southern Africa. b. Asia. c. Chile. d. the Yukon. e. Australia.

Biology & Microbiology

Which of these haploid strains produces permease but does not produce ?-galactosidase?

A) I – P+ O+ Z+ Y+ B) I+ P+ O+ Z – Y+ C) I – P+ O+ Z – Y – D) I+ P+ O – Z+ Y+ E) I – P+ O+ Z+ Y –

Biology & Microbiology

The ?S and ?A alleles can be distinguished on the basis of __________

A) variations in the length of their DNA restriction fragments B) variations in the length of the amino acid sequence C) different electrophoretic mobilities caused by a single amino acid substitution D) variations in the length of both the DNA restriction fragments and the amino acid sequence (both A and B) E) variations in the DNA restriction fragments and different electrophoretic mobilities of the protein products due to a single amino acid substitution. (both A and C)

Biology & Microbiology