A recessive trait will be observed in individuals that are ________ for that trait.
a) heterozygous
b) homozygous or heterozygous
c) homozygous
d) diploid
Ans: homozygous
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How many molecules of CO2 are needed to generate one molecule of glucose?
A. 2 B. 3 C. 4 D. 5 E. 6
Ernest Rutherford's key experiment on alpha particle bombardment of gold foil was important to the development of
A. detection methods for protons. B. alpha particle emitters. C. gold as an element. D. the modern model for atomic structure. E. the concept that atoms have a homogenous distribution of protons throughout the atom.
Why are roots essential for terrestrial plants?
A. They allow plants to obtain sun energy. B. Roots are not essential for plants, as plants can function without roots. C. They absorb carbon dioxide needed for photosynthesis. D. They absorb water and minerals needed for growth.
Which of the following contains a coded message of how to construct a protein?
A. ATP B. tRNA C. ribosome D. mRNA