Question

Given the mRNA base sequence of:

AUG UUC GCU

Please use the codon chart or wheel to determine the amino acid sequence that will be translated from this segment of mRNA

Plasmids 101: Codon usage bias Investigations

Question 14 options:

Met Leu Ala


Met Phe Ala


Val Ala Gly


Met Ala Gly

Question 15 (1 point)
Which of the following types of RNA is responsible for carrying amino acids to the ribosomes to be bonded to the growing amino acid chain?

Question 15 options:

rRNA


mRNA


yRNA


tRNA

Question 16 (1 point)
Where does transcription take place?

Question 16 options:

in the cytoplasm


in the nucleus


outside the cell


in the mitochondria

Question 17 (1 point)
mRNA is a form of RNA that helps to make up the structure of ribosomes.

Question 17 options:
True
False
Question 18 (1 point)
Here is the base sequence of a gene that is about to be transcribed:

TAC CCA GTA

What would the base sequence of mRNA transcript be?

Question 18 options:

AUG GGU CAU


ATC GGT CAT


TAC CCA GTA


AUG CCA CAU

Question 19 (1 point)
What is the central dogma of biology?

Question 19 options:

Protein --> DNA --> RNA


DNA --> Protein --> RNA


DNA --> RNA --> Protein


RNA --> DNA --> Protein

Question 20 (1 point)
Which aspect of the central dogma of biology is represented by translation?

Question 20 options:

DNA --> RNA


DNA --> Protein


RNA --> DNA


RNA --> Protein

Question 21 (1 point)
After transcription occurs, the mRNA transcript needs to go through mRNA processing such as splicing, editing, or polyadenylation.

Question 21 options:
True
False
Question 22 (1 point)
Which of the following are major differences between DNA and RNA?

Question 22 options:

DNA is a double strand, RNA is a single strand


DNA has the sugar deoxyribose in its backbone, RNA has the sugar ribose in its backbone


DNA contains the nitrogen base thymine, RNA contains the nitrogen base uracil.


All of the above are differences between DNA and RNA.

Question 23 (1 point)
Which of the following point mutations would result in a frameshift mutation?

Question 23 options:

a point deletion


a point insertion


a point substitution


Both A and B would result in a frameshift

Question 24 (1 point)
Mutations are essential for evolution to occur because they increase genetic variation and the potential for individuals to differ.

Question 24 options:
True
False
Question 25 (1 point)
A mutation is a change in the sequence of bases in DNA.

Question 25 options:
True
False
Question 26 (1 point)
In general, most mutations are considered to be __________ .

Question 26 options:

good


bad


neutral

Question 27 (1 point)
Any environmental factor that can cause a mutation is known as a mutagen.

Question 27 options:
True
False
Question 28 (1 point)
The image below shows a type of chromosomal mutation.

Which category of chromosomal mutation would you classify this as?

Question 28 options:

Deletion


Insertion


Duplication


Translocation

Question 29 (1 point)
A point mutation occurs on a gene that changes just one nitrogen base.

This mutation ends up changing the codon but not changing the amino acid sequence. What would we call this type of mutation?

Question 29 options:

Silent mutation


Nonsense mutation


Missense mutation


Chromosomal mutation

Question 30 (1 point)
Somatic mutations are often considered more significant than germline mutations because they will be inherited by every other cell in your body.

Question 30 options:
True
False

Answer 1

Here are the answers to your questions:

**Question 14:**
The mRNA sequence is AUG UUC GCU. Using the codon chart:
- AUG = Methionine (Met)
- UUC = Phenylalanine (Phe)
- GCU = Alanine (Ala)

Thus, the amino acid sequence is **Met Phe Ala**.

**Question 15:**
The type of RNA that carries amino acids to the ribosomes is **tRNA**.

**Question 16:**
Transcription takes place **in the nucleus**.

**Question 17:**
mRNA is **False** as it does not help to make up the structure of ribosomes; that role is primarily filled by rRNA.

**Question 18:**
The base sequence of the mRNA transcript from the DNA sequence TAC CCA GTA would be **AUG GGU CAU**.

**Question 19:**
The central dogma of biology is **DNA --> RNA --> Protein**.

**Question 20:**
The aspect of the central dogma represented by translation is **RNA --> Protein**.

**Question 21:**
True, after transcription, mRNA transcript needs to go through mRNA processing such as splicing, editing, or polyadenylation.

**Question 22:**
All of the above are differences between DNA and RNA.

**Question 23:**
Both A and B would result in a frameshift (a point deletion and a point insertion).

**Question 24:**
True, mutations are essential for evolution as they increase genetic variation.

**Question 25:**
True, a mutation is a change in the sequence of bases in DNA.

**Question 26:**
In general, most mutations are considered to be **neutral**.

**Question 27:**
True, any environmental factor that can cause a mutation is known as a mutagen.

**Question 28:**
Without visual context, I cannot determine the type of mutation, but common categories include:
- Deletion: a segment of DNA is removed.
- Insertion: an extra segment is added.
- Duplication: a segment is copied.
- Translocation: segments are exchanged between chromosomes.

Please provide more information about the image for a specific classification.

**Question 29:**
This type of mutation is called a **Silent mutation** since it changes the codon but does not affect the resulting amino acid.

**Question 30:**
False, somatic mutations are not inherited by other cells in your body; germline mutations can be inherited.