In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts?
A) DNA contains sulfur, whereas protein does not.
B) DNA contains phosphorus, whereas protein does not.
C) DNA contains nitrogen, whereas protein does not.
D) DNA contains purines, whereas protein includes pyrimidines.
B
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The most common vectors used in DNA therapy experiments are _____
a. modified human cells b. retroviruses and adenoviruses c. antisense oligonucleotides (AONs) d. bacteria e. naked DNA
Arrange the following characteristics in order from the earliest to the most recent to evolve. (1 ) fruits (2 ) ovules (3 ) multicellular embryos (4 ) vascular system (5 ) alternation of generations b. 1, 2, 3, 4, 5 c. 3, 2, 4, 5, 1 d. 5, 2, 4, 3, 1 e. 5, 3, 4, 2, 1 f. 3, 5, 4, 2, 1
What will be an ideal response?
The total resources a population consumes and the wastes it produces is its ____
a. ecological footprint b. vital capacity
c. carrying capacity d. non-renewable resources e. limiting factor
In open water, the undissolved remains of dead organisms and other organic material that drifts toward the bottom is called ________ organic matter
Fill in the blank(s) with correct word