Often the mnemonic device "OIL RIG" is used to remember the principles of redox reactions. Oxidation Is Loss and Reduction Is Gain of what?
A. Electrons only
B. Hydrogen only
C. Electrons and hydrogen
D. Oxygen only
E. Oxygen and electrons
Answer: C
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Which of the following symptoms of trichinosis is most indicative of this disease?
A. Shortness of breath B. Eosinophilia C. Puffiness around the eyes D. Abdominal pain
Meat, fruits, and vegetables could be contaminated with E. coli strains toxic to humans when they come in contact with
animal I. feces ____. II. urine III. blood
a. I only b. I and II c. II and III d. I and III e. I, II, and III
The essence of meiosis is that
a. gametes receive one copy of each member of each pair of homologous chromosomes. b. diploid gametes are formed. c. each gamete receives one member of each pair of homologous chromosomes. d. haploid gametes are formed. e. each gamete receives one member of each pair of homologous chromosomes, and haploid gametes are formed.
During translation, chain elongation continues until:
a) a stop codon is encountered. b) all the tRNAs are converted to mRNAs. c) all the tRNAs are enzymatically broken down. d) the ribosome falls off the end of the mRNA. e) all the amino acids in the cell are used up.