Which phylum categorizes the largest known floating siphonophore colonies?
a. Anthozoa
b. Cubozoa
c. Hydrozoa
d. Scyphozoa
c. Hydrozoa
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Suppose you are carrying out a series of crosses with an insect where the mechanism of sex determination is unknown. You discover a mutant female with short bristles and decide to cross it with a wild type male that has normal bristles. Half of the F1 progeny have short bristles but all of these short-bristled F1 progeny are males. Based on these results, a valid hypothesis would be
A. Males are ZW, females are ZZ, and short bristles are caused by a dominant allele on the Z chromosome. B. Males are ZZ, females are ZW, and short bristles are caused by a recessive allele on the Z chromosome. C. Males are ZZ, females are ZW, and short bristles are caused by a dominant allele on the W chromosome. D. Males are ZZ, females are ZW, and short bristles are caused by a dominant allele on the Z chromosome. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about sex determination systems? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
A new experimental pesticide is being tested by a large agricultural chemical company. An unfortunate side effect in plants treated with this new product is a decrease in ATP production in the chloroplasts
(Interestingly, production of ATP in the mitochondria is unaffected.) Given this observation, which of the following would you expect to be DIRECTLY affected by the new pesticide? A. the synthesis of triose phosphates from 3- phosphoglycerate B. the transport of electrons along the photosynthetic electron transport chain C. the carboxylation of RuBP by rubisco D. the oxidation of RuBP by rubisco
Select the mismatched pair of Phylum Mollusca classes and their examples.
A. Polyplacophora—chitons B. Gastropoda—slugs C. Bivalvia—snails D. Cephalopoda—nautilus E. Gastropoda—nudibranchs
An imperfect flower
A. has no petals or sepals. B. contains only male or only female structures. C. is sterile. D. has accessory structures with irregular symmetry.