AFS DNA Pre-Test

There is an error in the DNA molecule in

• A) segment 1, only

• B) segment 3, only

• C) segments 2 and 3

• D) segments 2 and 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The diagram below represents a portion DNA molecule. The letters represent different types of

• A) sugar molecules

• B) molecular bases

• C) enzymes

• D) proteins

Tags

NGSS.HS-LS1-1

The molecule represented below is found in living things. Which statement describes one characteristic of this molecule?

• A) It is the template for the replication of genetic information.

• B) Organic catalysts are made up of these molecules.

• C) It is different in each cell of an organism.

• D) Cell membranes contain many of these molecules.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

In a portion of a gene, the nitrogenous base sequence is T-C-G-A-A-T. Which nitrogenous base sequence would normally be found bonded to this section of the gene?

• A) A-C-G-T-A-A

• B) A-C-G-U-U-A

• C) A-G-C-T-T-A

• D) U-G-C-A-A-U

Tags

NGSS.HS-LS3-1

Which statement best describes a portion of the molecule represented below?

• A) It consists of many ribose sugars.

• B) It unites with amino acids in the cytoplasm.

• C) It contains uracil, which functions in protein synthesis.

• D) It consists of alternating phosphate groups and deoxyribose molecules.

Tags

NGSS.HS-LS1-1

Which scientists developed the double helix model of the DNA molecule?

• A) Watson and Crick

• B) Hardy and Weinberg

• C) Darwin and Lamarck

• D) Weismann and Miller

The diagram below represents the building block of a large molecule known as a

• A) protein

• B) fatty acid

• C) carbohydrate

• D) nucleic acid

If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine, C?

• A) 15%

• B) 35%

• C) 70%

• D) 85%

What do the letters A, G, C, and T represent in nucleotides?

• A) phosphate groups

• B) deoxyribose sugars

• C) nitrogenous bases

• D) ribose sugars

Which nuclear process is represented below?

• A) recombination

• B) fertilization

• C) replication

• D) mutation