Biology Flashcards
What are cells?
The basic building blocks of all living organisms.
What is a tissue?
A group of cells with a similar structure
What are organs?
Aggregations of tissues performing specific functions
What are organ systems?
A group of organs which work together to form organisms
What does a nucleus do?
Controls the activities of the cell
What is the cytoplasm?
Where most chemical reactions take place in the cell
What does the cell membrane do?
Controls the passage of substances into and out of the cell. It also contains receptor molecules.
What do Chloroplasts do?
absorb light (using chlorophyll) to make food by photosynthesis
What is a Permanent Vacuole filled with?
Sap
Plant and algal cells also have a …made of … which … the cell.
cell wall made of cellulose which strengthens the cell
Cellular Respiration is…
an exothermic reaction which is continuously occurring in living cells.
What does the energy transferred from Cellular Respiration do?
supplies all the energy needed for living processes.
Respiration in cells can take place either…
aerobically (using oxygen) or anaerobically (without oxygen)
Where does Aerobic respiration take place?
the mitochondria
Organisms need energy for…
chemical reactions, movement, keeping warm.
