The overall process by which information carried by a signaling molecule is translated into changes that occur inside the cell is called signal ____.
a. digestion
b. digression
c. induction
d. interaction
e. transduction
ANSWER: e
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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
The fluid portion of the chloroplast is called the ________.
A. cytoplasm B. thylakoid C. matrix D. gel E. stroma
Which of the following tissue types will produce root hairs within the zone of maturation?
A. endodermis B. cortex C. vascular tissue D. epidermis
You just returned from a hiking/camping trip and are experiencing symptoms of an infection: high fever, swollen lymph nodes, and black-and-blue marks or hemorrhages under the skin. Your doctor asks if you have been in the four corners area of the U.S. (where the states of Arizona, Colorado, New Mexico, and Utah all meet). What does the doctor suspect?
A. Hemorrhagic fever is often associated with bats in that region of the U.S. B. Since there are many mosquitoes in that area, you might have been infected with Plasmodium. C. Those four states have high rates of Chikungunya, which is what the doctor suspects that you have. D. You might have picked up the plague bacterium from fleas that normally feed on rodents in that area.