Think about the environmental conditions of your microbiology lab. After reading the procedure for this exercise, which of the following designations of bacteria could you immediately determine would not be used in this lab.
A) Psychrophiles and hyperthermophiles
B) Thermophiles and psychrotrophs
C) Mesophiles and thermophiles
D) Psychrotrophs and mesophiles
A) Psychrophiles and hyperthermophiles
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In Drosophila, a mutation in a gene for a bicoid transporter gene could result in which of the following?
A. offspring with no head B. offspring with no spiracles C. offspring with two heads and no spiracles D. offspring with the location of the head and spiracles reversed E. offspring with no head and two spiracles
Polyunsaturated fats
a. have fewer hydrogen atoms than do saturated fats. b. are more characteristic of animal fats than plant fats. c. have no double bonds. d. are solid at room temperature. e. are none of these.
One hypothesis concerning the origin of the abiotic
synthesis of proteins holds that these proteins formed on and were bound and protected by a. oceanic stratified mica crystals. b. clay compounds in tidal flats. c. sediments in the oceans. d. oceanic metal ores. e. none of these.
Which statement describes enzymes?
A) Enzymes are not very specific. B) Enzymes are not affected by high heat, as proteins are. C) Enzymes can be recycled and used over and over again. D) Enzymes are "used up" during chemical reactions.