Which of the following statements is NOT true about the debate over the nature of genetic material?
A. Many scientists believed that DNA was not the genetic material because, with only four types of nucleotides, DNA did not have enough variability to store information.
B. Some scientists thought that RNA was likely to be the genetic material.
C. Scientists focused on carbohydrate and protein in their studies of possible genetic material since they knew that genes were on chromosomes and that chromosomes were made of carbohydrate and protein.
D. Many scientists thought that proteins had a greater capacity for storing information because proteins contain 20 amino acids that could be sequenced differently.
Answer: C
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has well-developed teeth for stabbing prey. b. secretes paralyzing venom suspended in saliva. c. has a symbiotic relationship with its host. d. entraps food particles from water. e. feeds on nectar while suspended in air.
Paired lungs are characteristic of ____
a. spiders b. all birds c. all fishes d. all amphibian life stages e. all insects
What structure forms a ring around the membrane pinching the cell into two separate cells?
a. myosin b. microfilaments c. troponin d. histones e. chromatin
In all experimental studies to date, the effect of increasing nutrient availability to plants has been to ________ plant diversity
Fill in the blank(s) with correct word