Macromolecules
What is the primary function of lipids?
Long-Term energy storage
What organelle does photosynthesis occur in?
Chloroplast
What is a stem cell?
An unspecialized cell that can become many different cell types
What is the purpose of cell transport?
To move substances in and out of cells
What is an ecosystem?
A community of organisms and their physical environment
What are the monomers of carbohydrates called?
Monosaccharides
What is the relationship between the two equations?
They use the same reactants and products.
What are the two main types of stem cells?
Embryonic and Adult
What molecule provides energy for active transport?
ATP
What do arrows represent in a food chain?
The flow of energy
What do enzymes do in chemical reactions?
Speed up chemical reactions
Write the formula for cellular respiration.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + ATP
What happens to the DNA in a cell during differentiation?
It activates, telling the cell what to do.
What does “selectively permeable” mean?
Only certain substances can pass through
What’s the difference between a food chain and a food web?
A chain shows one path of energy, a web shows many
Which macromolecules are not true polymers?
Lipids
What are the products of photosynthesis?
Glucose and Oxygen
Why is cell shape important for function?
Structure helps cells perform their specific job effectively
In osmosis, what happens to a cell in a hypotonic solution?
It swells as water enters the cell
What is the shape of an energy pyramid and why?
A triangle, because energy decreases at each level
Which two macromolecules contain nitrogen?
Proteins and Nucleic Acids
How are photosynthesis and respiration part of the carbon cycle?
they both remove carbon from the atmosphere
Why are stem cells important for growth and repair?
They can divide and become specialized cells needed by the body
Why can gases like oxygen and carbon dioxide diffuse easily?
They are small
What happens when a species is removed from an ecosystem?
It can disrupt the food web or cause collapse