Components of DNA 7A

Humans have thousands of genes that combine in different ways to help create unique individuals.

Where is the genetic code primarily located?

• A Ribose sugars in RNA

• Phosphates in DNA

• Nucleotides in DNA

• Exons in RNA

Identify the components of DNA.

Move the correct answer to each box. Not all answers will be used.

a

b

c

Deoxyribose Sugar

Phosphate

Sugar base sugar

Ribose Sugar 

Nitrogenous  base

Nucleotide

Base Pair

Tags

NGSS.HS-LS1-1

Albumin is a protein that is secreted by liver cells and transported to the bloodstream. What factor most directly determines the amino acids that are combined to create albumin?

• The temperature of the cell when translation is taking place

• The number of chromosomes in a cell

• The sequence of nucleotides in DNA

• The amount of energy that is available in the cell

Tags

NGSS.HS-LS1-1

The base sequence of a segment of DNA is shown.

Which base sequence correctly completes DNA Strand 2?

• A A T A C G T

• B G C G TAC

• C G C A T G

• T A T G C A

Tags

NGSS.HS-LS1-1

What components make up the backbone of a DNA molecule?

• Purines and deoxyribose

• Pyrimidines and purines

• Deoxyribose and phosphate groups

• Phosphate groups and pyrimidines

A model of DNA is shown.

Which part of the DNA model is most directly associated with the

coding of genetic information?

• 
• 
• 
• 

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

A segment of DNA is shown in the diagram.

Which of these identifies the part of the DNA segment labeled X?

• Nucleotide

• Phosphate group

• Hydrogen bond

• Deoxyribose

Tags

NGSS.HS-LS1-1

In Texas Longhorn cattle, coat coloration is an inherited trait. What is the genetic basis of

coat-color variation in Texas Longhorn cattle?

• Differences in the nucleotide sequences of genes

• Differences in the numbers of chromosomes in cells

• Differences in the diets of individual cattle

• Differences in the environmental conditions of different geographic areas

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Eight components present in nucleic acids are listed in the box.

Which components bond with adenine in a section of double-stranded DNA?

• 1, 3, 5, and 6 only

• 3 and 5 only

• 2 and 4 only

• 3, 4, 7, and 8 only

Tags

NGSS.HS-LS1-1

A segment of a DNA strand is shown.

3' AGGTCAGGT 5'

Which of these is the correct complementary DNA strand for the segment shown?

• 5' AGGTCAGGT 3'

• 5' ACCUGAGGU 3'

• 5' TGGACTGGA 3'

• 5' TCCAGTCCA 3'