Organisation of the Organism
What is the basic unit of life?
Cell
What is diffusion?
Movement of particles from high to low concentration
What are the basic units of carbohydrates?
Glucose (monosaccharides)
What are enzymes made of?
Proteins
What raw materials are needed for photosynthesis?
Carbon dioxide and water
A group of similar cells performing the same function is called a ____?
Tissue
What is osmosis?
Movement of water through a partially permeable membrane
Name one element found in all proteins.
Nitrogen
What is the role of an enzyme?
Speeds up chemical reactions
What is the word equation for photosynthesis?
Carbon dioxide + water → glucose + oxygen
Name one organ in the human digestive system.
Stomach / Liver / Intestine
What does active transport require?
Energy (ATP)
Which test is used to detect glucose?
Benedict’s test
What happens to an enzyme at very high temperatures?
It becomes denatured
Which pigment absorbs light for photosynthesis?
Chlorophyll
What is an organ system?
A group of organs working together to carry out a function
Give one example of diffusion in humans.
Oxygen entering blood in lungs
What is the function of DNA?
Carries genetic information
What is the optimum temperature for most human enzymes?
Around 37°C
Name one factor that limits photosynthesis.
Light / Carbon dioxide / Temperature
What is the function of the cell membrane?
Controls movement of substances in and out of the cell
Why do plant cells not burst in pure water?
Because of the cell wall
Which elements are found in fats and oils?
Carbon, hydrogen, and oxygen
How does extreme pH affect enzyme activity?
Enzyme denatures
What is the main product of photosynthesis?
Glucose