Semester 1 Review
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an insertion mutation?
Back
An insertion mutation is a type of genetic mutation where one or more nucleotide bases are added to a DNA sequence, potentially altering the resulting protein.
2.
FLASHCARD QUESTION
Front
What are prokaryotes?
Back
Prokaryotes are single-celled organisms that lack a nucleus and other membrane-bound organelles. Bacteria are a primary example of prokaryotes.
3.
FLASHCARD QUESTION
Front
What is a nucleus?
Back
The nucleus is a membrane-bound organelle found in eukaryotic cells that contains the cell's genetic material (DNA) and controls cellular activities.
4.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a specific gene, represented as 'Aa'.
5.
FLASHCARD QUESTION
Front
How do you transcribe DNA to mRNA?
Back
To transcribe DNA to mRNA, replace thymine (T) with uracil (U) and create a complementary strand. For example, TAC becomes AUG.
6.
FLASHCARD QUESTION
Front
What is the role of ribosomes in a cell?
Back
Ribosomes are cellular structures that synthesize proteins by translating messenger RNA (mRNA) into amino acid sequences.
7.
FLASHCARD QUESTION
Front
What is a deletion mutation?
Back
A deletion mutation is a genetic mutation where one or more nucleotide bases are removed from a DNA sequence, which can lead to changes in the protein produced.
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