Cells
What is the basic unit of life?
Cell
What is a protein that speeds up chemical reactions?
Enzyme
What is the main fuel molecule for respiration?
Glucose
What gas is not required in anaerobic respiration?
Oxygen
True or False – Enzymes are reused in reactions.
True
What organelle controls the cell's activities?
Nucleus
The place on an enzyme where the substrate binds
Active site
Which gas is required for aerobic respiration?
Oxygen
What product is formed in muscle cells during anaerobic respiration?
Lactic acid
What happens to enzyme activity when temperature is too low?
Slows down
What organelle is where protein synthesis happens?
Ribosomes
When an enzyme changes shape due to high temperature
Denature
Name one product of aerobic respiration besides energy
Carbon dioxide or water
What product is formed in yeast during anaerobic respiration?
Ethanol + carbon dioxide
What type of blood cell carries oxygen?
Red blood cell
What organelle in plant cells contains chlorophyll?
Chloroplasts
Why does enzyme activity slow down at very low temperatures?
Molecules move more slowly, with fewer collisions
Where in the cell does aerobic respiration mainly occur?
Mitochondria
Anaerobic respiration releases ____ energy compared to aerobic
Less
What type of biological molecule are enzymes?
Proteins
What is the difference between prokaryotic and eukaryotic cells?
Prokaryotes lack a nucleus, eukaryotes has nucleus
What two factors affect enzyme activity most?
Temperature and pH
Write the balanced equation for aerobic respiration
Glucose + Oxygen → Carbon dioxide + Water + Energy/ATP
What is the term for the extra oxygen needed after exercise?
Oxygen debt
What chemical test is used to detect starch?
Iodine solution