Exploring DNA and Gene Expression
Quiz
•
Science
•
10th Grade
•
Practice Problem
•
Medium
+1
Standards-aligned
Tanna Sebrell
Used 11+ times
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33 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary enzyme responsible for adding nucleotides during DNA replication?
DNA helicase
DNA polymerase
RNA polymerase
Ligase
Answer explanation
DNA polymerase is the primary enzyme that adds nucleotides to the growing DNA strand during replication, ensuring accurate copying of the genetic material.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process involves the synthesis of mRNA from a DNA template?
Translation
Replication
Transcription
Splicing
Answer explanation
Transcription is the process where mRNA is synthesized from a DNA template. It involves the enzyme RNA polymerase, which reads the DNA sequence and creates a complementary RNA strand.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of restriction enzymes in genetic engineering?
To synthesize DNA
To cut DNA at specific sequences
To replicate DNA
To transcribe RNA
Answer explanation
Restriction enzymes are crucial in genetic engineering as they cut DNA at specific sequences, allowing scientists to manipulate and insert genes effectively. This precise cutting is essential for cloning and gene editing.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an application of PCR (Polymerase Chain Reaction)?
DNA sequencing
Protein synthesis
RNA splicing
Cell division
Answer explanation
PCR is primarily used to amplify DNA, making it a crucial step in DNA sequencing. The other options, such as protein synthesis and RNA splicing, do not involve PCR.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a mutation in a DNA sequence affect protein synthesis?
It always results in a nonfunctional protein
It may change the amino acid sequence of the protein
It has no effect on the protein
It always stops protein synthesis
Answer explanation
A mutation in a DNA sequence can lead to changes in the amino acid sequence of the resulting protein, potentially altering its function. Therefore, the correct answer is that it may change the amino acid sequence of the protein.
Tags
NGSS.HS-LS1-1
NGSS.HS-LS3-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the semi-conservative nature of DNA replication.
Each new DNA molecule consists of two new strands
Each new DNA molecule consists of one old and one new strand
Each new DNA molecule is identical to the original
Each new DNA molecule is completely new
Answer explanation
DNA replication is semi-conservative, meaning each new DNA molecule contains one original (old) strand and one newly synthesized strand. This ensures genetic continuity and accuracy in the replication process.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which organelle is primarily involved in the translation process of protein synthesis?
Nucleus
Ribosome
Golgi apparatus
Mitochondria
Answer explanation
The ribosome is the organelle responsible for translating mRNA into proteins during protein synthesis. It reads the sequence of nucleotides and assembles the corresponding amino acids, making it essential for this process.
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