Which of the following statements is FALSE?
A) DNA polymerase joins nucleotides in one direction only.
B) The leading strand of DNA is made continuously.
C) The lagging strand of DNA is started by an RNA primer.
D) DNA replication proceeds in one direction around the bacterial chromosome.
E) Multiple replication forks are possible on a bacterial chromosome.
Ans: D) DNA replication proceeds in one direction around the bacterial chromosome.
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What is the order of anatomical structures through which a sperm cell passes during maturation and expulsion from
the body? 1. vas deferens 2. epididymus 3. urethra
a. 1-2-3 b. 1-3-2 c. 2-3-1 d. 2-1-3 e. 3-1-2
The pyramid of energy is
a. a demonstration of the first law of thermodynamics. b. a result of the decline in the energy available as energy travels through the trophic levels. c. fundamentally different from the pyramid of biomass and the pyramid of numbers. d. just one of the manifestations of competition. e. is a calculation of the energy gained at each level.
Plant proteins generally are missing some vital amino acids. They are therefore called ________
Fill in the blank(s) with correct word
Two forms of hemophilia are determined by genes on the X chromosome in humans. Assume that a phenotypically normal woman whose father had hemophilia is married to a normal man. What is the probability that their first son will have hemophilia?
A) 1/2 B) 100% C) zero D) 1/4 E) 1/3