If a culture starts with 50 cells, how many cells will be present after five generations with no cell death?
A 200
B. 400
C. 1600
D. 3200
Ans: C. 1600
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The conditions normally present in food such as moisture, acidity and nutrients are referred to as
A. extrinsic factors. B. intrinsic factors. C. endogenous factors. D. exogenous factors
Darwin’s experiments on phototropism illustrated that ____
a. plant stems bend away from bright lights b. signals from plant roots control phototropism c. an opaque cap placed over a shoot tip will cause a plant to bend toward light, but will inhibit growth d. a translucent cap placed over a shoot tip will cause a plant to bend toward light, but will inhibit growth e. a translucent cap placed over a shoot tip will cause a plant to both grow and bend toward light
Which term describes the front side of an animal displaying bilateral symmetry?
a. anterior b. posterior c. ventral d. dorsal
Someone who lives next to a bell tower doesn't even notice the chiming of the bells after a while. This is an example of ________
Fill in the blank(s) with correct word