The ras proto-oncogene family is a group of related genes that slow or stop the progression of cancer
a. True
b. False
False
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Myofibrials are what?
What will be an ideal response?
Grand Rapids variety of lettuce produces seeds that will not germinate unless they are exposed to light
Phytochrome is also involved in that exposure to red light stimulates germination and far-red light inhibits germination. However, the effect of red light can be reversed by an immediate exposure to farred light--and vice versa. You design an experiment in which you expose seeds of Grand Rapids lettuce first to red light, then immediately to far-red light, and then immediately to red light again. Would these seeds germinate? Use your knowledge of the phytochrome molecule to explain your reasoning. What if the seeds were exposed first to red light, then immediately to far-red light, then immediately to red light again, and then immediately to far-red light again What will be an ideal response?
The population of microorganisms in the large intestine is composed mostly of
a) aerobes and anaerobes. b) anaerobes and facultative anaerobes. c) aerobes and facultative anaerobes. d) aerotolerant anaerobes.
All of the following are iron-binding proteins found in humans EXCEPT
A) lactoferrin. B) transferrin. C) hemoglobin. D) siderophorin. E) ferritin.