What organisms are most often displaced by the invasive species of zebra mussels?
a. Chinook salmon
b. coral reefs
c. other mussel species
d. snail darters
C
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Which of the following factors would tend to increase membrane fluidity?
A) a greater proportion of unsaturated phospholipids B) a greater proportion of saturated phospholipids C) a lower temperature D) a relatively high protein content in the membrane E) a greater proportion of relatively large glycolipids compared with lipids having smaller molecular masses
Luke sprained his ankle, tearing some of the collagen protein that forms his ligaments. Some types of collagen consist of three polypeptide chains twisted together to form a rope-like strand. What level of protein structure does this rope-like strand represent?
A. Primary B. Secondary C. Tertiary D. Quaternary
according to current health standards, obesity is defined as having a BMI of ___ or higher
What will be an ideal response?
Antibiotic resistance in bacteria develops primarily due to
A) Random mutation B) Horizontal gene transfer C) Metabolic changes D) Induction by host cells