Explain how a saturated fat is structurally different from an unsaturated fat
What will be an ideal response?
A saturated fat has three fatty acids that are saturated with hydrogens, and the tails are able to be straight and packed closely together. Unsaturated fats are not fully saturated with hydrogens and contain bonds that cause bends or kinks in the fatty acid chains, so they cannot pack tightly together.
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The following represents a portion of one half of a DNA strand: ATTCG. What would be the
complementary sequence to this?
a. ATTCG b. TAAGC c. AUUCG d. UAAGC
The building blocks for the enzyme lactase are
a. proteins. b. amino acids. c. nucleic acids. d. glucose molecules
All the offspring of a cross between a black-eyed Mendelian and an orange-eyed Mendelian have black eyes. What is the expected phenotypic ratio of a cross between two orange-eyed Mendelians?
A) 3 black-eyed:1 orange-eyed B) 0 black-eyed:1 orange-eyed C) 1 black-eyed:3 orange-eyed D) 1 black-eyed:0 orange-eyed
According to this figure, heterozygotes for this form of hypercholesterolemia suffer from the disease because they
A) produce an abnormally shaped LDL receptor.
B) don't produce any LDL receptors.
C) produce too many LDL receptors.
D) don't produce enough LDL receptors.