Alcohol consumption adversely affects the synthesis of molecules involved in protein degradation, which can eventually lead to liver damage. Given this information, which organelle in liver cells is most directly affected by alcohol consumption?
A. lysosome
B. golgi apparatus
C. rough endoplasmic reticulum
D. nucleus
Answer: C
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Rickets is caused by
a. overexposure to UV radiation. b. an excess of calcitonin. c. inadequate amounts of vitamin D. d. an excess of ascorbic acid. e. a fetal deficiency of thyroid hormone.
Cheetahs were almost extinct but conservation efforts managed to save them. Now, most cheetahs are genetically identical. What phenomenon explains this?
A. Gene flow B. Bottleneck effect C. Natural selection D. Selective mating
Answer the following questions true (T) or false (F)
1. Reverse transcriptase synthesizes a DNA molecule from an RNA template. 2. The goals of recombinant DNA technology include production of new organisms with useful combinations of traits. 3. Restriction enzymes are useful only on synthetic DNAs.
AZT and Valaciclovir are antiviral nucleoside analogs that interfere with
A) protein synthesis. B) cell wall synthesis. C) cell membrane component synthesis. D) nucleic acid synthesis. E) viral attachment.