Hypertension can be caused by all of the following EXCEPT
a. abnormalities of the cortex of the adrenal glands.
b. advanced age.
c. certain medications.
d. kidney disease.
e. exercise
E
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Many diseases, cancers, and even normal human variations can be caused by mutations and variations in the DNA nucleotide sequence. The most likely immediate result of DNA having a different nucleotide sequence is that
A. the protein resulting from the DNA mutation would be denatured and nonfunctional. B. the peptide bonds in the protein would by hydrolyzed and the protein would fall apart. C. no direct result of change in the protein molecule would occur if DNA is mutated. D. the polypeptide of a protein would be altered. E. the ability for the cell to make proteins would fail.
Pseudopodia are used by Amoeba for ingesting food as well as for:a
reproduction. b. excretion. c. digestion. d. movement. e. avoiding predation
Answer the following questions true (T) or false (F)
1. Water and plasma proteins make up about 99 percent of blood plasma. 2. Because they are cell fragments, not cells, platelets are a component of plasma, not a formed element. 3. Ions in plasma are also known as electrolytes.
Darwin's hypothesis of common ancestry with branching descent explains:
a. the hierarchical patterns of similarity ob-served in nature. c. the history and pattern of life's diversity. b. varieties nested within species nesting within genera. d. All of the above.