Semester Exam 1

Semester Exam 1

Assessment

Flashcard

Biology

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that specifies a particular amino acid or a stop signal during protein synthesis.

2.

FLASHCARD QUESTION

Front

What does the codon UGA signify in protein synthesis?

Back

UGA is a stop codon that signals the termination of polypeptide synthesis.

3.

FLASHCARD QUESTION

Front

What is the purpose of transcription in cellular processes?

Back

Transcription is the process of copying a segment of DNA into RNA, allowing the information in the DNA to be used by the cell.

4.

FLASHCARD QUESTION

Front

What is an inversion in genetics?

Back

An inversion is a chromosomal rearrangement where a segment of a chromosome is reversed end to end.

5.

FLASHCARD QUESTION

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

6.

FLASHCARD QUESTION

Front

What is the strand-slippage hypothesis?

Back

The strand-slippage hypothesis suggests that mutations can occur in repetitive DNA sequences due to the misalignment of DNA strands during replication.

7.

FLASHCARD QUESTION

Front

What is an insertion mutation?

Back

An insertion mutation occurs when one or more nitrogenous bases are added to a DNA sequence, potentially altering the resulting protein.

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