Those echinoderms with a globular or flattened test are of the class:
a. Holothuroidea.
b. Asteroidea.
c. Ophiuroidea.
d. Echinoidea.
e. Crinoidea.
D
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An organism has been found to contain a defective form of photolyase. What function might be impaired in this organism?
A. Lengthening of the tips of chromosomes B. Repair of DNA damage caused by UV light C. Stabilization of single-stranded DNA during DNA replication D. Recognition of damaged DNA by the UvrABC complex 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 photolyase? 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?
Which of the following pairs of traits are homologous?
a. butterfly wings and bat wings b. the surface areas of bird and bat wings c. the bones of bird and bat wings d. butterfly wings and bird wings e. bird wings and bat wings
Four of the five biomes/environments listed below are terrestrial. Select the exception
a. boreal forest b. temperate deciduous forest c. tropical forest d. kelp forest e. thorn forest
The building blocks of proteins
What will be an ideal response?