Identify the letter of the choice that best completes the statement or answers t
ID: 99765 • Letter: I
Question
Identify the letter of the choice that best completes the statement or answers the question. Fill in your answer completely on your scantron sheet Which of these individuals are credited with the discovery of the structure of DNA? A. Rosalind Franklin B. Gregor Mendel and T.H. Morgan C. James Watson and Francis Crick D. Louis Pasteur E. None of the above are correct Why are the strands of DNA said to be complementary to each other? A. The sugar-phosphate chains are running in opposite directions B. The sugar-phosphate chains of each strand are identical C. Both strands can have any of four possible bases attached D. All the bases of one strand are paired up with their complementary base on the other strand What is the relationship between DNA and proteins? A. Genes are made of proteins that encode the base sequence of DNA B. DNA stores the information needed to make proteins C. DNA makes up the individual sugar-phosphate-base units of proteins D. DNA molecules are the enzymes that synthesize proteins E. Proteins store the information needed to make DNA What is meant by saying that one strand of DNA is the template strand for the synthesis of another strand? A. A strand of DNA is taken apart to supply nucleotides for synthesis of a new strand B. One strand of DNA acts as a wedge to separate other strands before replication C. The template strand specifies the order of bases of the strand being made D. The new strand will have exactly the same base sequence as the template strand E. A strand of DNA is the enzyme that connects nucleotides in replication How many different types of bases are used to encode all the genetic information in a molecule DNA? A. 2 B. 4 C. 20 D. 10 E. 5 The three components of a DNA nucleotide are: A. Phosphates, sugars, and bases B. Amino acids, phosphates, and deoxyribose C. Genes, sugars, and bases D. Polymerases, ligases, and sugars E. None of the above are correctExplanation / Answer
1)C.James Watson and Francis Crick
they discover the structure of DNA.
2)D. All the base of one strand are paired up with their complementary base on the other strand.
Due to the base pairing, the DNA strands are complementary to each other
3)B.DNA store the information needed to make proteins.
4)C.The template strand specifies the other order of bases of the strand being made
5)B.4
6)A.Phosphates, sugars, bases
A sugar (called deoxyribose)
A Phosphate (1 phosphorus atom joined to 4 oxygen atoms)
One of 4 bases (Adenine, Guanine, Cytosine, Thymine)