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Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0? a. Asparagine & Glutamine b. Leucine & Glycine c. Histidine & Lysine d. Aspartate
When a cell undergoes a hypersensitive response, it a. Builds cell walls quickly. b. Releases defense molecules from its vacuole. c. Dies rapidly. d. Destroys avirulence gene products
Which processes of phloem translocation require ATP? a. Phloem loading b. Phloem unloading c. Mass flow of water and solutes through phloem d. A and B e. A and C
What factors can regulate transpiration rates? a. Quantity and quality of light b. Atmospheric CO2 concentrations c. Water status of plant d. Atmospheric O2 concentrations e. A, B, and C
Statoliths are what kind of plastid? a. chloroplasts b. leucoplasts c. amyloplasts d. chromoplasts e. proteinoplasts
What kind of plastid is used by plants to detect gravity? a. chloroplasts b. leucoplasts c. amyloplasts d. chromoplasts e. proteinoplasts
What is phototropism? a. A growth response to UV light b. A directional growth response c. A temperature-regulated growth response d. A form of photosynthesis that affects plant movement
When phytochrome is exposed to red light, a. Pr converts to Pfr b. Pfr converts to Pr
Which hormone maintains seed dormancy? a. Cytokinen b. Gibberellic acid c. Florigen d. Auxin e. Abscissic acid
Which hormone most strongly affects cell division in embryos? a. IAA b. GA c. Ethylene d. AA e. CK
Which hormone can trigger cell wall expansion? a. Cytokinen b. Gibberellic acid c. Florigen d. Auxin e. Abscissic acid
How can you distinguish guard cells from non-guard cells? a. They contain mitochondria b. They contain chloroplasts c. They do not have plasmodesmata d. They have plasmodesmata e. B and C
All growth in plants is due to: a. Cell division in the three basic tissue systems and subsequent cell elongation b. Cell division at meristems and subsequent cell elongation c. Cell division as neede
What are intercalary meristems? a. Meristems that develop between internodes in some plants b. Meristems that develop primary meristematic tissues c. Meristems that are responsible for secondary growt
What ultimately controls pattern formation in Drosophila? a. Morphogen gradients and signaling molecules under maternal control b. Morphogen gradients and signaling molecules under embryonic control c
When does differentiation begin in flowering plants? a. Prior to fertilization b. Just after fertilization, but before any cell divisions take place c. Just after the first cell division d. At the bla
When does differentiation begin in fruit fly (insects)? a. Prior to fertilization b. Just after fertilization, but before any cell divisions take place c. Just after the first cell division d. At the
Question 1: How does vaccination help the immune response at second exposure? Question 2: Describe how antibody isotype switching is controlled by IL-4.
Question 1: What is a lysine auxotroph? Question 2: Which one of the following statements is CORRECT?a. CO2 is considered a fixed, non-volatile acid b. An increase in plasma pH will stimulate respirat
Question 1: Why are koch's postulates not as useful in describing viral diseases as for bacterial diseases Question 2: What color is the fragments if they are dyed with bisbenzmide when running a gel?
Question 1: An allele at a locus interacts with several other things in producing the individual's phenotype. What are three of these interactions? Question 2: What is the advantage of using the seq
Describe what is meant by "the demographic transition" in a human population. Explain why it might be important, for future management of himan population growth, to discover wheter the demographic
Question 1: How do the different organs and organ systems work interdependently to sustain health of a living organism? Question 2: Why do we use the fetal pig to study human anatomy?