DNA, RNA, and Protein Synthesis

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary function of mRNA in protein synthesis?

  • Transporting specific amino acids to the ribosome
  • Translating tRNA into proteins
  • Replicating DNA sequences
  • Carrying the genetic code from DNA to the ribosome (correct)

If a mutation occurs where one nitrogenous base is replaced by another in a DNA sequence, this is known as what type of mutation?

  • Deletion
  • Insertion
  • Substitution (correct)
  • Translocation

During DNA replication, which enzyme is primarily responsible for proofreading and correcting errors in the newly synthesized DNA strand?

  • Primase
  • DNA polymerase (correct)
  • Helicase
  • Ligase

What is the role of tRNA in the process of translation?

<p>To carry specific amino acids to the ribosome. (A)</p> Signup and view all the answers

Which of the following is a characteristic of RNA but NOT of DNA?

<p>Uses the nitrogenous base Uracil (B)</p> Signup and view all the answers

In what part of the cell does translation occur?

<p>Cytoplasm (D)</p> Signup and view all the answers

Which of the following describes a deletion mutation?

<p>One or more nitrogenous bases are left out of the DNA sequence. (A)</p> Signup and view all the answers

Adenine always pairs with which nitrogenous base?

<p>Thymine (A)</p> Signup and view all the answers

What is the purpose of transcription?

<p>To synthesize mRNA from DNA. (C)</p> Signup and view all the answers

Which of the following defines a nucleotide?

<p>A molecule made of a nitrogenous base, a sugar, and a phosphate group. (A)</p> Signup and view all the answers

Which of the following is NOT a component of a nucleotide?

<p>Amino acid (C)</p> Signup and view all the answers

If a strand of DNA has the sequence 5'-GATTACA-3', what would be the sequence of its complementary strand?

<p>5'-CTAATGT-3' (B)</p> Signup and view all the answers

Which type of RNA carries specific amino acids to the ribosome during protein synthesis?

<p>tRNA (C)</p> Signup and view all the answers

Which base sequence represents the anticodon?

<p>on tRNA (B)</p> Signup and view all the answers

Which nitrogenous base is typically found in RNA but not in DNA?

<p>Uracil (D)</p> Signup and view all the answers

Which statement accurately describes the role of rRNA?

<p>rRNA translates mRNA into proteins. (B)</p> Signup and view all the answers

Assuming the typical base pairing rules, how would guanine pair?

<p>with cytosine (A)</p> Signup and view all the answers

Which statement accurately describes replication?

<p>is the process of making a copy of DNA (A)</p> Signup and view all the answers

Which process results in mRNA?

<p>transcription (B)</p> Signup and view all the answers

If a DNA sequence undergoes an insertion mutation, what can be expected?

<p>one or more nitrogen bases are added (D)</p> Signup and view all the answers

An experiment shows that proteins are made of what types of material?

<p>amino acids (A)</p> Signup and view all the answers

Which statement accurately describes mutation?

<p>mutation is a change in the nucleotide sequence (C)</p> Signup and view all the answers

How many mRNA codons are there?

<p>64 (D)</p> Signup and view all the answers

If the DNA sequence 'ATT' became 'ATC,' what type of mutation occurred?

<p>substitution (C)</p> Signup and view all the answers

If you want to explain to a student the function of RNA, which statement is most accurate?

<p>RNA carries the code for making proteins (B)</p> Signup and view all the answers

Following mutation, if one nitrogenous base is replaced with another, what is that called?

<p>substitution (C)</p> Signup and view all the answers

Which molecule stores an organism's genetic information?

<p>DNA (A)</p> Signup and view all the answers

Where does translation typically occur in a cell?

<p>cytoplasm (C)</p> Signup and view all the answers

Which sequence is involved in base pairing?

<p>adenine-thymine (A)</p> Signup and view all the answers

If you add one or more nitrogenous bases to the DNA, what is that process called?

<p>insertion (D)</p> Signup and view all the answers

Which of the following is NOT involved in protein synthesis?

<p>lipids (C)</p> Signup and view all the answers

Which process involves making proteins from RNA?

<p>translation (C)</p> Signup and view all the answers

How do nitrogenous bases attach?

<p>guanine - cytosine (D)</p> Signup and view all the answers

Which of these statements defines 'replication'?

<p>process of copying a DNA molecule to make another one (B)</p> Signup and view all the answers

What makes up a nucleotide?

<p>molecule made of a nitrogenous base, sugar, and phosphate group (A)</p> Signup and view all the answers

If you remove a nitrogen base, what type of mutation is that?

<p>deletion (B)</p> Signup and view all the answers

What would the anticodon pair with in the mRNA?

<p>three nitrogenous bases (B)</p> Signup and view all the answers

Flashcards

DNA

Organism's genetic material, contains instructions for development and function.

Nucleotide

Molecule made of a nitrogenous base, a sugar, and a phosphate group.

Replication

Process of copying a DNA molecule to make another one.

RNA

Type of nucleic acid that carries the code for making proteins.

Signup and view all the flashcards

Transcription

Process of making mRNA from DNA (first step of making protein).

Signup and view all the flashcards

Translation

Process of making a protein from mRNA.

Signup and view all the flashcards

Mutation

Change in the nucleotide sequence of a gene.

Signup and view all the flashcards

Substitution (mutation)

One nitrogen base is replaced with another.

Signup and view all the flashcards

Insertion (mutation)

One or more nitrogenous bases are added to the DNA sequence.

Signup and view all the flashcards

Deletion (mutation)

One or more nitrogen bases are left out of the DNA sequence.

Signup and view all the flashcards

Anticodon

Three nitrogenous bases on tRNA.

Signup and view all the flashcards

Cytoplasm

The location where translation occurs.

Signup and view all the flashcards

mRNA

Carries the genetic code from DNA to the ribosome.

Signup and view all the flashcards

rRNA

Translates mRNA into proteins.

Signup and view all the flashcards

tRNA

Carries specific amino acids to the ribosome.

Signup and view all the flashcards

Components of a nucleotide

A nitrogenous base, a sugar, and a phosphate group.

Signup and view all the flashcards

Base Pairing: A-T

Adenine pairs with Thymine.

Signup and view all the flashcards

Base Pairing: C-G

Cytosine pairs with Guanine

Signup and view all the flashcards

Study Notes

  • DNA is an organism's genetic material.
  • A nucleotide is a molecule made of a nitrogenous base, a sugar, and a phosphate group.
  • Replication is the process of copying a DNA molecule to make another one.
  • RNA is a type of nucleic acid that carries the code for making proteins.
  • Transcription is the process of making mRNA from DNA.
    • It's the first step in making protein.
  • Translation is the process of making a protein from RNA.
  • Mutation is a change in the nucleotide sequence of a gene.

Types of Mutations

  • Substitution: one nitrogen base is replaced with another.
  • Insertion: one or more nitrogenous bases are added to the DNA.
  • Deletion: one or more nitrogen bases are left out of the DNA sequence.
  • Three nitrogenous bases on tRNA are called anticodons.
  • Translation occurs in the cytoplasm.
  • Proteins are made of amino acids.
  • There are 64 codons but only 20 amino acids.

Types of RNA

  • mRNA carries the genetic code from DNA to the ribosome.
  • rRNA translates mRNA into proteins.
  • tRNA carries specific amino acids to the ribosome.

Components of a Nucleotide

  • Nitrogenous base (A-T, C-G).
  • Sugar
  • Phosphate group

Base Pairing Rules

  • Adenine pairs with Thymine.
  • Thymine pairs with Adenine.
  • Cytosine pairs with Guanine.
  • Guanine pairs with Cytosine.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Biology: Translation and Transcription Processes
4 questions
AP Biology: Gene to Protein Overview
44 questions
Use Quizgecko on...
Browser
Browser