In humans, the blastocyst develops about ____ days after fertilization

a. 1
b. 3
c. 5
d. 7
e. 9


ANSWER: c

Biology & Microbiology

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Which of the following activities in the roots does not require energy?

A. transport of solutes into the cytoplasm B. making specific nutrients in the soil available to the root C. supporting symbiotic relationships with soil microorganisms D. absorbing water into the root hair E. All root activities require energy.

Biology & Microbiology

Destiny has distal symphalangism - her fingers and toes are stiff, with tiny nails. She looks it up and finds it is an autosomal dominant trait. Since her parents do not have it, she reasons that she has a new mutation. However, if she has children, each of them, assuming her partner does not have the condition, has a(n) ________ probability of inheriting the condition.

A) 1/8 B) 1/4 C) 1/2 D) 0

Biology & Microbiology

Which of the following is considered to be the most basic living unit?

a. molecule b. organelle c. organ system d. tissue e. cell

Biology & Microbiology

Which features of naked mole rats are similar to eusocial insects? (Check all that apply)   

_____  a single queen is responsible for breeding _____  colony has a large number of individuals _____  division of labor _____  haplodiploidy _____  higher relatedness between siblings than between parent and child 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 group living in different animal groups? 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: 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?

Biology & Microbiology