Which one of the following is a description of a controlled experiment?
A. Group I, 50 mice provided with food (mouse pellets) and a water bottle Group II, 25 mice provide with food (corn) and provided with water in a tray.
B. Group I, 25 mice provided with food (mouse pellets) and a water bottle Group II, 50 mice but only half the mice are provide with food (mouse pellets) and a water bottle.
C. Group A, 50 mice provided with food (mouse pellets) and a water bottle Group B, 50 mice provided with food (corn) and provided with water in a tray.
D. Group A, 50 mice provided with food (mouse pellets) and a water bottle Group B, 50 mice provided with food (corn) and water in a water bottle.
D. Group A, 50 mice provided with food (mouse pellets) and a water bottle Group B, 50 mice provided with food (corn) and water in a water bottle.
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a. both are found in plants cells b. both contain chlorophyll c. DNA is present in both d. ribosomes are present in both e. both are found in plants cells, and DNA and ribosomes are present in both
You are studying a population of geese in which there are two color phases, brown and gray. Color in this species is controlled by a single gene, with brown dominant to gray. A random sample of 250 geese shows that 210 are brown. What percentage of the brown geese are heterozygous? (Assume that the population is in Hardy-Weinberg equilibrium.)
A. 48% B. 57% C. 36% D. 43% E. 84%
The 'Electron Transport Chain', if present in bacteria, it will be found in the
A. cell cytoplasm B. cytoplasmic membrane C. cell wall D. mitochondriea E. ribosomes
While focusing on a microscope on high power, a student crushed the coverslip. The student probably
a. shut the light off b. turned up the light intensity c. rotated the eyepiece d. used the coarse adjustment