Which of the following is not an autotroph?
a. yeast
b. oak tree
c. cyanobacterium
d. algae
e. grass
a. yeast
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Calcium is necessary to initiate muscle contraction. Which of the following molecules binds calcium?
A. myosin B. actin C. troponin D. tropomyosin
Which of the following is not one of the principles of linkage that Morgan obtained from his experiments?
A. Genes that are on the same chromosome may be inherited together. B. Crossing over exchanges pieces of chromosomes and creates new allele combinations. C. The likelihood of crossing over occurring between two genes is dependent on the distance of the genes from one another. D. Genes that are on the same chromosome are always transmitted together as a unit.
Which statement about phenotype is false?
A. The phenotype is what the environment acts on B. A behavior is a phenotype C. Phenotypes are typically affected by a single genetic locus D. The phenotype is what natural selection acts on
Which of the following is NOT a checkpoint that controls the progression of the cell cycle?
A. The metaphase checkpoint determines if all chromosomes are attached to the spindle apparatus. B. The restriction point determines if conditions are favorable for cell division and if the DNA is undamaged. C. The G2 checkpoint checks for DNA damage and determines if all of the DNA is replicated. D. Cyclins and cyclin-dependent kinases are proteins that are responsible for advancing a cell through the phases of the cell cycle. E. Cytokinesis involves the formation of cleavage furrow to separate the cells.