The process through which cells can detect and respond to signals in their extracellular environment is
A. transduction.
B. sensory response.
C. cell communication.
D. cell sensation.
E. reception.
Answer: C
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Primary protein structure is dependent on
a. hydrophobic interactions. b. hydrogen bonds between two amino acids. c. covalent linkages between carbons and nitrogens of adjacent amino acids. d. covalent linkages between carbons and oxygens of adjacent amino acids. e. all of these
Nuclear lamins differs in all the different types of an organism
a. true b. false
How do males and females differ as they age?
A. Females undergo menopause, but males do not undergo any changes in their reproductive hormone levels. B. Males can continue to produce sperm until death, but females do not continue to produce eggs. C. Females dehydrate faster than males do. D. Males lose skeletal muscle mass, but females tend to gain muscle mass. E. Males develop urinary incontinence, but females do not.
A ?-pleated sheet is a type of
A) primary structure found in a protein. B) secondary structure found in a protein. C) tertiary structure found in a protein. D) quaternary structure found in a protein. E) heme structure found in a protein.