A leaf that is found to have stomata and epidermal hairs in depressions in the leaf surface probably came from a plant that is adapted to a(n) ________ climate
a. arctic
b. arid
c. cool and rainy
d. tropical
b
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Mutation of the peripheral myelin protein 22 (PMP22) gene, which causes demyelination of peripheral neurons, is a more common cause of Charcot-Marie-Tooth disease. In which cells is the PMP22 gene important for normal function?
Charcot-Marie-Tooth is the most commonly inherited peripheral neuropathy, and has no known cure. Patients suffer damage to motor and sensory neurons, leading to degeneration of muscles and gradual loss of motor control. A. Schwann cells B. preganglionic neurons C. postganglionic neurons D. oligodendrocytes E. interneurons Clarify Question · What is the key concept addressed by the question? What type of thinking is required Gather Content/Choose Answer · What do you already know about components of the nervous system? What other information is related to the question? 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?
Members of which fungal phylum are the only ones to produce motile spores?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
An example of gene therapy is the insertion of the gene for human growth hormone into E. coli cells.
Answer the following statement true (T) or false (F)
What type of bonding is responsible for maintaining the shape of the tRNA molecule?
A. van der Waals interactions between hydrogen atoms B. covalent bonding between sulfur atoms C. peptide bonding between amino acids D. hydrogen bonding between base pairs E. ionic bonding between phosphates