If a cell has a diploid number, it indicates that _____
A) each chromosome belongs to a homologous pair
B) it is a germ cell: an egg or sperm
C) the cell was produced by a meiotic nuclear division
D) cytoplasmic division failed and the cell has become multinucleated
Answer: A) each chromosome belongs to a homologous pair
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How many DNA polymerases are found in prokaryotes?
A. 5 B. 7 C. 9 D. 12
The vast majority of microorganisms found in soils have been successfully cultured in the laboratory.
Answer the following statement true (T) or false (F)
Which of the following is the best description of decomposition?
a. breaking down inorganic molecules such as carbon dioxide and water into organic molecules such as carbohydrates, lipids, and proteins b. building organic molecules such as carbohydrates, lipids, and proteins from inorganic molecules such as carbon dioxide, water, and nitrogen-containing compounds c. building macromolecules from smaller organic molecules d. breaking down organic molecules into inorganic molecules e. a process undertaken by producers in an ecosystem
Viruses ____________.
a) sit on the fence between life and nonlife. b) use either DNA or RNA as their genetic material. c) only infect sick people. d) all of the above are correct. e) only a and c