Who demonstrated that DNA is the genetic material of the T2 phage?
A: Watson and Crick
B: Meselson and Stahl
C: Hershey and Chase
D: Franklin
E: Darwin and Wallace
Answer: C: Hershey and Chase
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Salt intake is associated with an increased likelihood of high blood pressure and is therefore an environmental ____ (2 words) for this common disorder
Fill in the blank with the appropriate word.
It’s your turn to clean out the refrigerator in the lab break room again, which is definitely your favorite way to spend a Friday afternoon. While you are contemplating moldy peaches, and your own disappointment at the lack of a limerick, you glance at the pantry door, from which has appeared a stream of ants carrying bits of cereal and crackers. You follow the ants out the door, down the hall, to a supply closet, where you find they’ve established a colony in a case of printer paper. If these were just any ants, you’d put in a ticket for an exterminator and go home, but alas!; they’re endangered Cube Farm Ants, which means the pantry and supply closet are now wildlife preserves. The thought of all the paperwork you’re going to have to fill out almost ruins your entire
weekend, until you realize you are standing in the middle of a fantastic pun – what is it? a. biodiversity hotspot b. closet species c. wildlife corridor d. ecological niche
A flower must have one or more ____ to be able to make seeds
a. stamens b. sepals c. carpels d. stamens and sepals e. stamens and carpels
Mitosis results in:
a) haploid gametes. b) somatic daughter cells with the same number and composition of chromosomes. c) diploid gametes. d) somatic cells with twice as much genetic material and a unique collection of alleles. e) four daughter cells.