Genetic Code Basics

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of spliceosomes in the context of genetic code?

To remove exons from mRNA
To synthesize proteins directly
To code for amino acids
To remove introns and join exons together (correct)

How many combinations of nucleotides can be formed using a triplet code with 4 different nucleotides?

64 (correct)
16
80
32

What is the significance of having introns in DNA genes?

They allow for more than one type of protein to be made (correct)
They limit the variety of proteins produced
They are coding regions for proteins
They are unnecessary and commonly deleted

What is the minimum number of nucleotides required to specify all 20 amino acids in the genetic code?

<p>3 (A)</p> Signup and view all the answers

Which statement best describes the genetic code?

<p>It is a set of rules used to translate nucleotide sequences into protein structures (A)</p> Signup and view all the answers

Flashcards

Genetic Code

A set of rules that tells the cell how to translate a gene's DNA sequence into a protein's amino acid sequence.

Exons

Coding regions of a gene that contain the instructions for making a protein.

Introns

Non-coding regions of a gene that are removed before the gene is translated into protein.

Spliceosome

A molecular machine that removes introns from a gene and joins exons together to form a mature mRNA molecule.

Signup and view all the flashcards

Triplet Code

The genetic code uses three nucleotides (a codon) to specify each amino acid.

Signup and view all the flashcards

Study Notes

Genetic Code

DNA contains coding (exons) and non-coding (introns) regions
Introns are removed by spliceosomes, joining exons
mRNA is formed from exons
mRNA leaves the nucleus and is translated into protein
The genetic code converts mRNA nucleotide sequences to amino acid sequences
The code uses 4 nucleotides (A, C, G, T) to code for 20 amino acids
The code is read in triplets (3 nucleotides)
Each triplet codes for a specific amino acid
There are 64 possible triplet combinations, enough to code for all 20 amino acids

Studying That Suits You

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

Description

Explore the fundamental aspects of the genetic code, including the roles of exons and introns, the process of mRNA formation, and how nucleotide sequences are translated into amino acids. Understand the significance of triplet codons in protein coding and the versatility of the genetic code.