Read the descriptions of the four phases of the cell cycle. Then match each description to the name of the phase. Column A
Column B
1.
M phase
a. III. Organelles and materials needed for DNA synthesis
are made.
2
G1 phase
b. I. At the end of this phase, each chromosome is made up
of two chromatids.
3.
S phase
C. II. Chromatids are distributed to the two daughter nuclei.
4.
G2 phase
d. IV. Proteins and other materials needed for cell division
are synthesized.

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles