A predator-prey relationship, such as between roadrunners and lizards

a) is usually a cause of extinction of one of the species
b) leads to related increases and decreases in the populations of both species
c) represents competition between species
d) contributes to exponential growth of the predator species


Answer: b) leads to related increases and decreases in the populations of both species

Biology & Microbiology

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Science is subdivided into specific areas of study termed disciplines. These divisions are artificial but are helpful to narrow the massive scope of scientific knowledge to a manageable amount. Given what you know about each, which scientific division is likely to present the best answer to a question about how fluid dynamics affect blood pressure in mammals?

A. Bioinformatics – use of technology to study and store biological data B. Biochemistry – study of chemical reactions needed for life function, usually at the cellular level. C. Biology – study of life D. Biophysics – study of biological processes through physics

Biology & Microbiology

A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?

A. 0 B. 13 C. 26 D. 52

Biology & Microbiology

HIV may affect

a. the human reproductive system. b. the human circulatory system. c. the human respiratory system. d. the human immune system. e. all of these.

Biology & Microbiology

Pattern formation in plants involves signaling molecules that specify positional information

____________________ Indicate whether the statement is true or false.

Biology & Microbiology