Who demonstrated that phage genetic material is DNA and not protein?
A. Hershey and Chase
B. Chargaff
C. Franklin
D. Watson and Crick
E. Avery, MacLeod, and McCarty
A. Hershey and Chase
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What passes through the nuclear pores?
A. DNA and RNA B. DNA C. RNA D. Neither DNA nor RNA
The stop codons are translated codons; that is, they specify amino acids to be inserted into the last position of a growing polypeptide chain.
Answer the following statement true (T) or false (F)
The primary function of centrioles in animal cells is ____
a. generation of flagella and cilia b. spindle formation c. to connect the two sister chromatids d. to provide a point of attachment for spindle fibers on chromosomes e. cell plate formation
What did experiments with the brown alga Fucus help to determine?
A. The thallus anchors the alga to the surface on which it lives. B. A cell wall is required for the zygote to "remember" where a rhizoid should form. C. Magnesium gradients are important for cell wall formation. D. Light and gravity do not affect rhizoid orientation. E. The cytoplasm is evenly distributed throughout the algal zygote.