____ asteroids appear to have nickel-iron compositions and may be the cores of broken asteroids
a. S-type
b. M-type
c. C-type
b
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The material released from bacteria that may lead to shock and death in septicemia is
A. exotoxin. B. protein A. C. endotoxin. D. interferon.
Phenylketonuria (PKU) is an example of a phenotype that is solely influenced by genes
Indicate whether the statement is true or false
You have a freshly prepared 0.1 M glucose solution. Each liter of this solution contains how many glucose molecules?
A) 6.02 × 1023 B) 3.01 × 1023 C) 6.02 × 1024 D) 6.02 × 1022
When G2 and M phase cells were fused together, the G2 nucleus became prematurely compacted when it was exposed to S phase cytoplasm in the fused cell. The G2 chromosomes could be seen to be visibly doubled. What conclusion was drawn from this result?
a) M phase cytoplasm contained diffusible factors that initiate DNA synthesis b) G2 nuclei cannot respond to diffusible factors present in M-phase cell cytoplasm c) the cytoplasm of the mitotic cell contained diffusible factors that could induct mitosis in a non-mitotic cell d) the cytoplasm of the G2 cell contained diffusible factors that could halt mitosis in a mitotic cell