Semester Exam Practice Test

Which of the following on the diagram is a centromere?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-4

1. Use Diagram A and B to answer the following question

2. What do we know about Diagram A?

• Diagram A is DNA because it is double-stranded and contains the sugar ribose.

• 1. Diagram A is RNA because it is single-stranded and contains the sugar ribose.

• 1. Diagram A is DNA because it is single-stranded and contains the sugar deoxyribose.

• 1. Diagram A is RNA because it is double-stranded and contains the sugar deoxyribose. 

Tags

NGSS.HS-LS1-1

What are the four bases of DNA?

• adenine, guanine, cytosine, thymine

• 1. adenine, guanine, cytosine, uracil

• 1. ribose, guanine, cytosine, thymine

• 1. ribose, guanine, cytosine, uracil

In DNA, Adenine always pairs with

• Thymine

• Cytosine

• Guanine

• Uracil

The process by which DNA makes copies of itself is called…

• Protein Synthesis

• DNA Replication

• Transcription

• Translation

Tags

NGSS.HS-LS3-2

1. What would be the complementary strand for the following DNA Sequence? CATGATAC

• 1. TGCATGAA

• UGCAUGAA

• GTACUAUC

• 1. GTACTATG

Answer explanation

When DNA makes copies of itself, it always follows this base pairing rule:

Thymine= Adenine

Cytosine= Guanine

Ex:

DNA: T A C G A

DNA: A T G C T

1. Which of the following is the template for the production of RNA within a cell?

• ATP

• 1. Protein

• 1. DNA

• 1. Carbohydrate

Answer explanation

DNA is used to make mRNA. mRNA is used to make an amino acid chain (protein).

In RNA, Adenine always pairs with

• Thymine

• Cytosine

• Guanine

• Uracil

What is the primary function of the ribosomes in a cell?

• Protein synthesis

• Energy production

• DNA replication

• Lipid synthesis

Which molecule carries the genetic information from DNA to the ribosome during protein synthesis?

• mRNA

• tRNA

• rRNA

• DNA