All cells are enclosed by a plasma membrane that is similar in ________ and ________
A) thickness; composition
B) permeability; content
C) lucidity; texture
D) structure; function
Answer: D
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Negative feedback loops act to
a. control sperm production. b. cause uterine contractions during childbirth. c. cause milk production after childbirth. d. cause expulsion of milk during breastfeeding. e. cause an erection of the penis when stimulated.
Even a single stimulus can activate protein kinase A in presynaptic neurons involved in the gill-withdrawal reflex in Aplysia.
Answer the following statement true (T) or false (F)
A display of data obtained from scientific experiments can often be described using a(n) ________ to clarify the meaning of experimental results
Fill in the blank(s) with correct word
Which of the following is true for restriction enzymes?
A. A given restriction enzyme will always recognize the same DNA sequence, but it will cut differently depending on the species of origin of the DNA. B. Each restriction enzyme known is able to make a staggered cut at its recognition site. C. Any restriction enzyme can cut any piece of DNA. D. A different restriction enzyme must be used to open the vector DNA than to excise the gene sequence to be cloned. E. Restriction enzymes are useful in genetic engineering when they make staggered cuts in DNA