Who proposed that the Earth's geological features formed slowly over time, creating long periods for

evolution?
a. Charles Darwin
b. Aristotle
c. Lamarck
d. Charles Lyell
e. Erasmus Darwin


D

Biology & Microbiology

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Ehrlich and Raven hypothesized that if a new defensive trait evolves in a single plant species (or if a new trait to counteract a plant's defenses evolves in an herbivore species)

the appearance of that trait could result in a period of species diversification. Their hypothesis is also referred to as: A. the "diverge and converge" hypothesis. B. the "reverse and diverse" hypothesis. C. the "emit and commit" hypothesis. D. the "merge and diverge" hypothesis. E. the "escape and radiate" hypothesis.

Biology & Microbiology

The region of the frontal lobe that controls voluntary movement is called the:

a. motor region b. voluntary cortex c. primary motor cortex d. somatosensory cortex e. primary auditory cortex

Biology & Microbiology

What are the three types of posttranscriptional processing, and what are the consequences of preventing each of these modifications in terms of gene expression?

What will be an ideal response?

Biology & Microbiology

Low levels of the neurotransmitter dopamine can lessen the ability to focus effectively on tasks. However, high levels of dopamine can result in feelings of motivation. How would you classify dopamine and why?

A) Dopamine is excitatory because it enhances motivation levels. B) Dopamine is inhibitory because it diminishes the ability to focus. C) Dopamine is both inhibitory and excitatory because it can enhance motivation levels but diminish the ability to focus.

Biology & Microbiology