Saturated fats have long, straight tails of fatty acids, whereas unsaturated fats from vegetables have kinks in their tails due to double bonds. These kinks prevent the fats from packing together as tightly. Hydrogenated vegetable oils, or trans fats, have hydrogens added back to the double bonds and thus behave like
A. proteins.
B. saturated fats.
C. unsaturated fats.
D. carbohydrates.
E. waxes.
B. saturated fats.
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The cytoskeletal structure(s) that are composed of actin and regulate cell shape, cell movement and muscle contraction include
_____ microfilaments. _____ intermediate filaments. _____ microtubules. _____ microtubules and intermediate filaments. _____ microfilaments and microtubules.
Do any difference(s) detected in DNA sequence seem to correlate with a difference in amino acid sequence?
a. yes b. no
How many varieties of apples account for 90% of the apples sold in U.S. grocery stores today?
a. 5 b. 15 c. 25 d. 50 e. 150
All of the following hormones are secreted by organs of the digestive system and directly regulate digestive processes EXCEPT ________.
Fill in the blank(s) with the appropriate word(s).