What is the net movement of substances to regions of lower concentration called?
A. Osmosis
B. Active transport
C. Facilitation
D. Diffusion
D
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Four of the five answers listed below are components of the mixture used in Miller and Urey's experiment. Select the exception
a. ammonia b. methane c. water d. hydrogen e. oxygen
Which of the following statements is FALSE?
a. Crossing over tends to reduce the frequency that two linked genes are inherited together. b. Independent assortment of homologous chromosomes during meiosis increases variation. c. Crossing over leads to variation. d. Abnormal number or structure of chromosomes may influence the course of evolution. e. The closer together genes are found on a chromosome, the greater is a chance that crossing over will occur between them
Which of the following is NOT a function of the integumentary system?
A. Regulation of body temperature B. Fluid transport C. Protection from dehydration D. Defense against pathogens E. Supporting the weight of body structures
The number of offspring produced by each reproducing member of a species, the ratio of males to females, and the time it takes offspring to become reproductively mature are determinants of the ________ of a population
Fill in the blank(s) with correct word