Question

1. which of the following is not true of dna?

a. it stores genetic information
b. it transmits genetic information
c. it contains instructions for the development and functioning of a cell
d. it duplicates by splitting into fourths

1. what arrangement of dna enables the nitrogenous bases on both strands to come into contact at the center of the molecule?

a. antiparallel arrangement
b. double - helix arrangement
c. semi - conservative arrangement
d. nucleic acid arrangement

1. what store genetic information that codes for traits?

a. sugar - phosphate backbone
b. nucleotide
c. genes
d. nucleus
true or false

1. ______ prokaryotic cell dna can be found in the cell’s cytoplasm.
2. ______ adenine pairs with cytosine and thymine pairs with guanine.
3. ______ the loss of dna during cell division may result in a loss of genetic information from one generation to the next
4. ______ dna sequences in a strand of dna are organized into units called amino acids.
5. ______ during dna replication, each strand of the double helix of dna serves as a template for the new strand.
6. ______ if a molecule of dna contains 30% thymine, then it will contain 70% adenine.
7. ______ a nucleic acid is a long strand of amino acids.
8. ______ dna is found in all cells.
9. ______ when a cell divides, each daughter cell receives different genetic information.
10. ______ dna stores, copies, and transmits genetic information.

Explanation:

• Question 8: DNA duplicates by semi - conservative replication (not splitting into fourths).
• Question 9: The double - helix arrangement allows nitrogenous bases on both strands to contact at the center.
• Question 10: Genes store genetic information that codes for traits.
• Question 11: Prokaryotic DNA is in the cytoplasm (True).
• Question 12: Adenine pairs with thymine, cytosine with guanine (False).
• Question 13: Loss of DNA during division can cause genetic info loss (True).
• Question 14: DNA sequences are organized into genes (not amino acids, False).
• Question 15: Each strand in DNA replication serves as a template (True).
• Question 16: In DNA, adenine pairs with thymine. If thymine is 30%, adenine is 30% (False).
• Question 17: A nucleic acid is a strand of nucleotides (not amino acids, False).
• Question 18: DNA is in all cells (True).
• Question 19: Daughter cells receive the same genetic info (False).
• Question 20: DNA stores, copies, and transmits genetic info (True).

Answer:

1. d
2. b
3. c
4. True
5. False
6. True
7. False
8. True
9. False
10. False
11. True
12. False
13. True