When an electron is transferred from one atom to the next, and the two atoms are then electrically attracted to one another, the type of bond is a(n) ________ bond.
A. ionic
B. covalent
C. hydrogen
D. kinetic
Answer: A
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The products of filtration in the renal corpuscle enter the renal tubule through which of the following structures?
A) the proximal convoluted tubule B) the loop of Henle C) the collecting duct D) Bowman's capsule
Which of the following is NOT true of human
chromosomes?
a. The haploid number is 23. b. The diploid number is 46. c. There are 23 pairs of chromosomes. d. Human gametes end up with two of each type of 23 chromosomes. e. Human gametes end up with one of each type of 23 chromosomes
Which is inncorrect concerning ulcers?
A. more than 90% are in the duodenum B. they may occur when excess acid damages tissue C. susceptibility is increased by an infection with helicobacter pylori. D. antibotics can cure an ulcer E. uclers can occur if bile fails to neutralize the acids chyme that enter the duodenum.
The protein-coding gene sequences in humans and chimpanzees
A. are about 80% alike. B. are about 50% alike. C. are more than 99% alike. D. are vastly different. E. are identical.