A group of organisms of the same species within a community is called a
A. niche.
B. community.
C. population.
D. habitat.
E. biome.
Answer: C
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Prions are created when normal proteins in the body ____
a. combine with large ribosomal subunit and become infectious b. exchange several long sections of amino acids with other infected proteins c. refold into a different and infectious three-dimensional shape that kills cells in the brain and nervous system d. undergo mutation and create hundreds of copies of themselves e. invade the immune system, causing it to mistakenly destroy the body's healthy tissue
A spider and an insect are both arthropods, but they have some different characteristics. Choose the descriptions that are true for BOTH a spider and an insect. Check all that apply.
_____ They have a head, a thorax, and an abdomen. _____ They have an open circulatory system. _____ Some species are carnivorous and some are herbivorous. _____ They have a chitinous exoskeleton. _____ They have spinnerets. _____ They molt. _____ They are members of Ecdysozoa. _____ They have sensory antennae. _____ They have metamorphosis. 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 arthropods? 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?
The final three-dimensional shape of a single polypeptide is called its ________ structure.
A. primary B. secondary C. tertiary D. quaternary
A heterozygote could have a variety of phenotypes depending on whether or not the mutation is recessive, dominant, or haploinsufficient. In this example, the gene A is necessary to form a tail in mice. If the mouse is a heterozygote (A/a), then what
would you predict the phenotype to be if the mutation was recessive, dominant, or haploinsufficient. What will be an ideal response?