Proteins that are encoded by the same gene but differ in structure and function are the product of alternative splicing in pre-mRNA processing. Such protein variants are termed
A) isoteins.
B) heteromeric proteins.
C) isozymes.
D) protein isoforms.
E) allelomorphs.
D
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The lacA gene found within the lac operon encodes for galactosidase transacetylase. This enzyme attaches a(n) ________ group to lactose and lactose analogs.
A. amino B. hydroxyl C. carbonyl D. acetyl E. carboxyl
What is the main premise of the blending theory of inheritance that predominated before 1900?
a. We inherit traits from only one parent. b. Traits are inherited via a mixing of parental blood. c. Parental chromosomes undergo recombination to produce blended chromosomes in their offspring. d. Traits may skip a generation due to the blending of paternal and maternal phenotypes. e. Paternal and maternal chromosomes separate independently in meiosis, creating gametes with a blend of paternal and maternal chromosomes.
The common human parasite Giardia lamblia
a. can cause diarrhea. b. is a bacterium. c. multiplies very slowly. d. uses pseudopodia for locomotion. e. is involved in many heart attacks.
Postindustrial societies have the majority of their work force engaged in tertiary and quaternary activities
Indicate whether this statement is true or false.