Enzymes speed chemical reactions by
A. raising the temperature of the surroundings
B. lowering the energy required to start a chemical reaction.
C. maintaining temperature.
D. supplying energy to the reaction process
Answer: B. lowering the energy required to start a chemical reaction.
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Organelles such as mitochondria and chloroplasts contain DNA that exhibits distinct inheritance patterns depending on the type of organism
A. true B. false
Mitosis results in ________ chromosome number, whereas meiosis results in ________ chromosome number.
A) a doubling of; no change in B) no change in; no change in C) a reduction by half in; no change in D) no change in; a doubling of E) no change in; a reduction by half in
Which of the following pairs is mismatched?
A) Penicillin — antibiotic B) Chemotherapy — treatment of disease C) Normal microbiota — harmful D)Pathogen — disease causing
In Cell Biology what can limit the progress of science?
a. Lymphocyte b. Progress c. Eating d. Bacteria e. Technology