A change in a single amino acid can change the structure and function of an entire protein. However, in some cases, there can be gene mutations, which change an amino acid in a protein structure but do not change either the overall shape or function of a protein. In cases like these, which level(s) of protein structure would change?
A. none
B. primary, secondary, tertiary, and quaternary
C. secondary and tertiary
D. primary
D. primary
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In horsetails, lycophytes, and whisk ferns, ____
a. spores give rise to gametophytes b. the main plant body is a gametophyte c. the sporophyte bears sperm- and egg-producing organs d. the gametophyte is the dominant stage in the life cycle e. the gametophyte produces spores
Which of the following diseases results from impaired glycosphingolipid degradation?
A) heart disease B) glycosphingolipid anemia C) metabolic syndrome D) erythrocyte spherocytosis E) Tay-Sachs disease
Refer to Figure 48-3. Hormonal regulation of sodium reabsorption occurs in the regions labeled:a
3 and 5. b. 6 and 8. c. 6, 7, and 8. d. 8 and 9. e. 9 and 10.
Neural crest cells form all of the following structures, EXCEPT
A. Cortices of Suprarenal Glands B. Dorsal Root Ganglia C. Enteric Ganglia D. Preaortic Ganglion E. Sympathetic Ganglia