What chromosomes belong to a normal human male?
A) 22 autosomes and two Y chromosomes
B) 44 autosomes and two Y chromosomes
C) 44 autosomes, one X chromosome, and one Y chromosome
D) 46 autosomes, one X chromosome, and one Y chromosome
C
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Approximately how many nerve cells does a human have?
A. 10 million B. 100 million C. 10 billion D. 100 billion E. We do not have a good estimate.
Petals
A. protect the developing flower. B. enclose and protect the ovule. C. produce pollen. D. are part of the gametophyte. E. attract pollinators.
According to the figure, what is a likely day of implantation?
A. Day 3
B. Day 27
C. Day 13
D. Day 21
E. Day 7
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 implantation? 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?
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?
If you were observing a newly discovered animal and wanted to determine if it reproduces sexually or asexually, you could
A. perform genetic screening on the parents and offspring to see if the offspring are genetically identical to parents. B. examine males to see if sperm can be produced. C. try to observe mating behavior. D. look carefully for nests with eggs. E. None of the answer choices is correct.