A theory and a hypothesis are different in that
A. you must have a theory before you can form a hypothesis.
B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea.
C. a theory is much easier to disprove than a hypothesis.
D. a theory can never be disproved while a hypothesis can.
B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea.
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Estrogen is involved in calcium metabolism as well as female reproductive functions. This is why post-menopause, women experience which of the following conditions as a result of decreased estrogen?
a. gall stones b. dementia c. osteoporosis d. arthritis
In meiosis, cells become haploid ____
a. at the end of telophase I b. during metaphase I c. during anaphase I d. at the beginning of metaphase II e. at the end of prophase II
The susceptibility of a host to a pathogen depends on
A) Pathogenicity of a microbe B) Nonspecific host responses C) Specific host responses D) All of the above
Genetic recombination allows bacterial cells to receive small amounts of ________ from other cells or from the environment.
A) protein B) DNA C) RNA D) cytoplasm