Lipid A is a component of
A) lipopolysaccharides.
B) plant cell walls.
C) cytoplasmic membranes.
D) mycolic acid.
E) bacterial glycocalyces.
A
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Honeybees can detect a variety of odorants through olfactory receptors on their antennae. You genetically engineer a receptor to be gated by the explosive chemical TNT, and use a transgene to express the receptor in honeybee olfactory neurons. What would this provide to the bee?
Honeybees have an incredible ability to distinguish thousands of different odorant molecules, using their large repertoire of olfactory receptors. A wide variety of different types of chemicals can be detected as odorants -- they simply require olfactory neurons with a receptor that can bind the chemical and transduce that stimulus into a receptor potential. A. the ability to taste TNT B. it would have no effect C. the ability to smell TNT D. the ability to collect TNT molecules E. the ability to see TNT Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about olfaction? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
These land plants are the only ones to make true flowers and fruits
a. bryophytes b. seedless vascular plants c. gymnosperms d. angiosperms e. gymnosperms and angiosperms
Identify the chemoreceptor(s) important for detecting possible toxic substances.
A. bitter B. salty and sweet C. sour D. salty E. sweet
Answer the following questions true (T) or false (F)
1. Lymph "glands" (nodes) swelling is a sign that an infection is present. 2. Antibodies are produced by plasma cells and regulatory T cells. 3. B cells are the main cells of the cell-mediated pathway.