Cells and simple cell transport Flashcards
Most human and animal cells are made up of what?
A nucleus. Cytoplasm. A cell membrane. Mitochondria. Ribosomes.
Most animal cells are made up of what?
Cell wall. Chloroplasts. Vacuole. Nucleus. Cytoplasm. Cell Membrane. Mitochondria. Ribosomes.
The nucleus does what?
Controls activities within a cell.
The cytoplasm does what?
Is the area in which most chemical reactions take place.
The cell membrane does what?
Controls the passage of substances into and out of the cell.
Mitochondria do what?
Release the most energy as this is where respiration takes place.
A ribosomes does what?
Protein synthesis.
What is a cell wall?
A part of a plant or algal cell made of cellulose which strengthens the cell.
What are chloroplasts?
They are made of chlorophyll and absorb light energy to make food (in the process of photosynthesis).
What is a vacuole?
A storage space inside a cell that is filled with sap.
What are bacterial cells made of?
Cytoplasm, cell wall and a cell membrane. The genes are not stored in a distinct nucleus.
Describe a yeast cell.
A nucleus with cytoplasm, a membrane and a cell wall.
Cells may be what to carry out a specific function?
Specialised.
Dissolved substances can move into and out of a cell via what process?
Diffusion.
Diffusion is what?
The spreading of particles through a gas or solution, that results in net movement from an area of higher concentration to an area of lower concentration.
The greater the difference in concentration the…
…greater the rate of diffusion.
How does oxygen required for respiration in the cell pass through the cell membrane?
By the process of diffusion.
