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WorksheetsBiology Study Guide 2nd Semester FY 25
Total questions: 20
Worksheet time: 20mins
Which of the following is true about mRNA?
It is double-stranded
It contains thymine instead of uracil
It carries the genetic information from DNA to the ribosome
It is involved in protein folding
Which molecule carries the genetic code from DNA to the ribosome for translation?
tRNA
rRNA
mRNA
DNA
What is the purpose of mitosis?
To produce gametes
To create genetically identical daughter cells
To form RNA
To reduce chromosome numbers
What is the central dogma of molecular biology?
DNA → Protein → RNA
DNA → RNA → Protein
RNA → Protein → DNA
Protein → RNA → DNA
What structure regulates what enters and exits the cell?
Nucleolus
Cytoplasm
Plasma membrane
Endoplasmic reticulum
What type of bond holds the nitrogenous bases together in a DNA molecule?
Covalent bonds
Ionic bonds
Hydrogen bonds
Peptide bonds
Where is the genetic material of a prokaryotic cell located?
Nucleus
Cytoplasm
Nucleoid region
Mitochondria
What happens during transcription?
mRNA is converted into a protein
DNA is replicated
RNA is synthesized from a DNA template
Protein is synthesized from mRNA
In which phase of the cell cycle do cells exit the cycle and stop dividing?
G1 phase
G0 phase
S phase
M phase
Where does translation occur in a cell?
Nucleus
Mitochondria
Ribosome
Endoplasmic reticulum
What is the first step of protein synthesis?
Translation
Replication
Transcription
DNA proofreading
Which of the following processes occurs in the cytoplasm of eukaryotic cells?
Transcription
Replication
Translation
DNA repair
What should you do if a chemical spills on your skin?
Rub the area with a cloth
Rinse the area immediately with water
Ignore it, and it will evaporate
Apply heat to the area
During which phase of the cell cycle does DNA replication occur?
G1 phase
S phase
G2 phase
M phase
What is the primary purpose of wearing safety goggles in the laboratory?
To protect your eyes from chemical splashes
To help you see the chemical reactions better
To make you look professional
To protect your eyes from UV light
Which organelle is responsible for protein synthesis?
Nucleus
Ribosomes
Mitochondria
Golgi apparatus
Which of the following should always be used when working with volatile chemicals?
Fume hood
Fire extinguisher
Ice pack
Pressure cooker
Which phase of mitosis involves the separation of sister chromatids?
Prophase
Metaphase
Anaphase
Telophase
Which of the following is an example of a carbohydrate?
DNA
Glucose
Insulin
Lipids
What is the primary function of nucleic acids like DNA and RNA?
Store energy
Provide structural support
Store and transmit genetic information
Catalyze chemical reactions
