Hemoglobin transports oxygen in the blood and consists of a chain of 146 amino acids. How many different types of amino acids are used to construct proteins?
A. 146
B. 2
C. 20
D. 200
Answer: C
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Homologous pairs of chromosomes align opposite of each other at the equator of a cell during _____
A) mitosis metaphase B) meiosis metaphase I C) meiosis telophase II D) meiosis metaphase II
The wild-type allele of a gene is:
A. dominant to other alleles. B. recessive to other alleles. C. found at the lowest frequency in a population. D. found at the greatest frequency in a population.
A population of squirrels is in a phase of exponential growth. Which events would act to slow this growth? (Check all that apply)
_____ a forest fire that destroys habitat _____ logging of nut trees _____ growth of the hawk population _____ heavy rainfall, resulting in larger seed and nut harvest _____ increased population that is outstripping food supply _____ less competition from a diminished population of ground squirrels 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 factors that could slow down the growth of a squirrel population? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection 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?
Contrast the following terms: monophyletic, paraphyletic, and polyphyletic. Provide one example for each. What will be an ideal response?