Monocots have flower parts that
a. are always reduced for wind pollination
b. occur in multiples of three
c. occur in multiples of four or five
d. are gymnosperms and therefore lack flowers
e. both a and b
Ans: b. occur in multiples of three
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In most animals with digestive tract, digestion occurs in four successive steps, with the digested material moving by
muscular contractions through the digestive tube.
Indicate whether the statement is true or false.Insulin stimulates cells to take in glucose by facilitated diffusion, so insulin receptor-down regulation increases the
ability of cells to take in glucose. __________________ Indicate whether the statement is true or false.
What did Engelmann conclude about the congregation of bacteria in the red and blue areas?
A) Bacteria congregated in these areas due to an increase in the temperature of the red and blue light. B) Bacteria congregated in these areas because these areas had the most oxygen being released. C) Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths. D) Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.
In a nutritionally balanced diet, the main source of energy is _______.
a) proteins b) carbohydrates c) lipids d) vitamins and minerals