The size of DNA is often given in the number of ________ that it contains.
A. triplets
B. genes
C. base pairs
D. proteins
E. codons
Answer: C
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A 28-year-old woman was gardening when a rose thorn pricked her finger, which later became infected. A sample is taken of the exudate and sent to the microbiology laboratory. Small, round, cigar-shaped structures are microscopically observed. She is most likely infected with which type of fungi?
a. Malassezia furfur b. H. capsulatum c. S. schenckii d. Fonsecaea pedrosoi
Bacteriophage, unlike animal viruses, often have special viral-specific enzymes carried in the capsid, which enter the host cell at the same time as the nucleic acid
Indicate whether this statement is true or false.
If a child belonged to blood type O, he or she could
NOT have been produced by which set of parents? a. type A mother and type B father b. type A mother and type O father c. type AB mother and type O father d. type O mother and type O father e. type O mother and type B father
Which is not true concerning Sertoli cells?
a. They secrete hormones. b. They are joined by tight junctions. c. They form a blood-testis barrier. d. They phagocytize discarded sperm cytoplasm. e. They facilitate the movement of sperm into the blood.