Match each class of biomolecules to the correct statement about it.
1. Glucose and ribose are examples; these molecules provide energy or structure.
2. ATP and DNA are examples; they transfer energy and encode genetic information.
3. Composed of units called amino acids, these can be linked into chains over 100 peptides
long.
4. Triglycerides and steroids are members of this group. As a class they are hydrophobic.
A. carbohydrates
B. lipids
C. proteins
D. nucleotides
1. A. carbohydrates
2. D. nucleotides
3. C. proteins
4. B. lipids
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Oxytocin is secreted by the hypothalamus
Indicate whether the statement is true or false
Identify the gland that produces mineralcorticoids, glucocorticoids, androgens, and norepinephrine
A) A B) B C) C D) D
Most of the skin is ________ mm thick
A) 1 to 2 B) 0.01 to 0.02 C) 100 to 200 D) 10 to 20 E) 0.1 to 0.2
One way one can purify myosin from other skeletal muscle proteins is to immobilize actin on a column, pour a mix of the muscle proteins through, wash first to get out the nonspecific proteins and then do a second to wash to obtain myosin. Based on the contraction cycle, your first wash should
a. include ATP, but the second wash should not. b. not include ATP, but the second wash should. c. include ATP, as should the second wash. d. not include ATP, and neither should the second. e. should include calcium, but the second one should not.