Question

match the following terms with their correct definition

1. double helix
2. nucleotides
3. deoxyribose
4. dna
5. hydrogen bond
6. adenine
7. cytosine

a. a five - carbon sugar
b. type of bond that holds the double helix together
c. one of three parts of a nucleotide made of one or two rings of carbon and nitrogen atoms
d. subunits that make up dna
e. one of two pyrimidines used as a nitrogen base in nucleotides
f. one of two purines used as a nitrogen base in nucleotides
g. abbreviation for deoxyribonucleic acid
h. 2 strands of nucleotides twisted around each other
part 2: dna function

1. the primary function of dna in cells is to

a. serve as a storage form for unused nucleotides
b. occupy space in the nucleus to keep the nucleus from collapsing
c. store information that tells the cells which proteins to make
d. serve as template for making long, spiral carbohydrates

1. dna make up chromosomes which are located in the:

a. ribosome
b. mitochondria
c. cytoplasm
d. nucleus

Explanation:

For question 14: DNA's main role is to store genetic information that instructs cells on protein synthesis. Option C is correct as it aligns with this biological function. Options A, B, and D are incorrect as they misdescribe DNA's purpose.
For question 15: Chromosomes, which are made of DNA, are located in the nucleus. Option D is correct. Ribosomes (A) are for protein synthesis, mitochondria (B) are for energy production, and cytoplasm (C) is the cell's internal fluid - none house chromosomes.

Answer:

1. C. store information that tells the cells which proteins to make
2. D. Nucleus