Most mammals, most cartilaginous fish, some amphibians, and a few reptiles have young developing within the female and obtaining nutrients from her blood, a relationship known as ________.
Fill in the blank(s) with the appropriate word(s).
viviparity
Most mammals, most cartilaginous fish, some amphibians, and a few reptiles have young developing within the female and obtaining nutrients from her blood, a relationship known as viviparity.
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Match the following items with the correct phrases.
_______1. Phenylethyl alcohol agar and Thayer-Martin agar. _______2. MacConkey agar and mannitol salt agar. _______3. Sabouraud dextrose agar. _______4. Blood agar. a. enriched and differential b. enriched and selective c. selective and differential d. selective only e. differential only
Hydrogen bonding ____ the movement of molecules, therefore, substances that form a lot of hydrogen bonds, like
water, will require ____ energy to increase their temperature by one degree Celsius.
a. decreases; less b. decreases; more
c. doesn't affect; no additional d. increases; less e. increases; more
Bacteria methylate their DNA in order to:
a. prepare for DNA replication. b. prepare for mitosis. c. effectively infect other cells. d. protect it from restriction enzymes. e. prevent viral DNA from hybridizing with bacterial DNA.
All of the following statements are true about seed germination EXCEPT
A. some seeds require fire or bacterial action before germination can occur. B. all seeds require a period of dormancy before germinating. C. in the temperate region, seeds often require a period of cold weather before dormancy is broken. D. fleshy fruits contain inhibitors of germination.