The digestive tract of a nematode is most like which of the following?
A) a sock
B) a soda straw
C) a cup
D) a baseball
Answer: B
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Which of the following is true about restriction endonucleases?
A. They make a blunt cut on the two DNA strands so that there are no single-strand regions. B. Depending on the incubation conditions, the same enzyme can either make a blunt cut on the two DNA strands so that there are no single-strand regions OR make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme. C. Some make a blunt cut on the two DNA strands so that there are no single-strand regions and some make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme. D. They make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme.
A collection of collagen fibrils is a collagen ________.
Fill in the blank(s) with the appropriate word(s).
What is the name given to determining evolutionary relationships by looking at one characteristic at a time?
What will be an ideal response?
Browsing through a seed catalog, you are tempted to order several beautiful floral varieties, but worry that you will spend too much on your garden every year. Which plants should you buy?
A. biennials, which will last twenty years before they die B. annuals, which will come back year after year C. herbaceous perennials, which will come back year after year D. woody perennials, which require little space and few resources