Which organ system includes the pituitary, thyroid, and adrenal glands?
a. endocrine system
b. reproductive system
c. lymphatic system
d. respiratory system
e. skeletal system
A
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Which of the following is a restriction placed on DNA polymerase?
A. DNA polymerase can attach new nucleotides only in the 5' to 3' direction. B. DNA polymerases must begin synthesis using an RNA primer. C. DNA polymerases must have a template strand to copy from. D. All of these are restrictions of DNA polymerase
Type I survivorship curves
a. are characteristics of humans and elephants. b. typify a population in which all ages have an equal chance of survival. c. indicate a high mortality rate in the very young. d. show that very few young are produced, that each is given parental support, and that most individuals live a relatively long life and die of old age. e. are typical of annual plants
Anti-viral drugs used to control certain viruses work by
A. causing the virus to replicate out of control B. inhibiting the enzyme necessary for viral replication C. making the virus more permeable to the drug D. none of these
Mutations that eliminate a contiguous region in the Drosophila embryo's segmentation pattern are called ________
A) segment genes B) linkage genes C) compartment genes D) homeodomains E) gap genes