Which of the following is a carboxyl group?
A) -C-O
B) -OH
C) -NH2
D) -COOH
Answer: D
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In biology lab, your class counts the number of people with different colors of hair and eyes. Your instructor says that these traits are variable and difficult to trace in each family. The reason is that these two traits depend on more than one gene, and are called
A. recessive. B. incomplete dominant traits. C. codominant. D. pleiotropic. E. polygenic.
Mendel's Principle of Independent Assortment, in modern terms, is the idea that _____
1.maternally derived chromosomes tend to segregate into gametes as a group, independently of the paternally derived chromosomes 2.each allele pair segregates into gametes without being influenced by the manner of segregation of other allele pairs 3.homologous chromosomes are separated during Meiosis I 4.homologous chromosomes segregate independently so that some pairs remain together and some do not
DNA polymerase assembles new strands
a. in a 5' to 3' direction only. b. in a 5' to 3' direction building one strand and a 3' to 5' direction building the other stand. c. in a 5' to 3' direction building the first half of a strand and a 3' to 5' direction building the second half of a strand. d. in a 3' to 5' direction building the first half of a strand and a 5' to 3' direction building the second half of a strand. e. in a 3' to 5' direction on the “old” 3' to 5' strand.
A patient presents with severe redness and ulcers (thrush) in the mouth associated with an overgrowth of Candida albicans of yeast infection. The most likely cause of this condition is:
A. food poisoning B. a stomach ulcer C. kissing a partner with yeast infection D. antibiotic therapy E. sharing tooth brush of person with yeast infection