Increases and decreases of the heart rate result from changes in the activity of the _____
A) medulla oblongata
B) thalamus
C) pituitary
D) cerebellum
A
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What type of species, if removed from the community, could lead to the collapse of the entire community?
A) Endemic species B) Keystone species C) Indicator species D) Flagship species
An example of a(n) micronutrient is phosphorus. Indicate whether the statement is true or false
Aerobic respiration and fermentation ________.
A. evolved in different living organisms to utilize energy stored in glucose with equal efficiency B. occur only in animal cells because plants carry out photosynthesis C. utilize fat as primary energy source D. occur at the same rate throughout all cells of the body E. start with glycolysis.
Gymnosperms can be both monoecious and dioecious. What does dioecious mean?
a. a sister group to the angiosperms b. diploid egg and sperm join at fertilization to form a tetraploid seed c. male and female sporangia produced by different plants d. having two ovules per scale in the cone