During what phase is the chromosomes number reduced from 2n to n?

Variation is a term that is used to describe A. how repetitive a data set is B. how large or small a data set is C. how spread out or scattered a data set is. D. how different a data set

Bacteria die when refrigerated or frozen

What is the main energy source that drives global climat a solar b. wind c. mechanis al d heat

What evidence supports the law of conservation of energy? Group of answer choices

Select the organism whose remains are most likely to become a fossil. an organism whose body is destroyed by water and wind an organism whose body is broken down by other organisms in the soil an organism that is buried in sediment

About four or five days after fertilization, a group of cells forms a ball-like structure. What is the name of this structure? A. Heart B. Placenta C. Blastocyst D. Stem Cell

Which of the following is the best definition of a scientific theory? A. a broad, well-supported explanation of related observations or events B. a description of a natural phenomenon that is always observed to occur under specific conditions C.

Consider a small protein containing 101 amino acid residues. the protein will have 200 bonds about which rotation can occur. assume that three orientations are possible about each of these bonds.

Where would i find the nucleus?

What is the protein coat that surrounds a virus called?