Cells Flashcards
A cell is the basic unit of life The body has about 30 trillion cells Diffusion: movement from one area of higher concentration to another are of low concentration Osmosis: diffusion or movement of water across a semi-permeable membrane Filtration: under pressure substances are forced across a membrane that acts like a filter Active transport: moves across cell membrane with the help of a carrier molecule ATP Energy: adenosine triphosphate energy Cells main parts: Cell membrane Cytoplasm Nucleu
What is a cell?
A cell is the basic unit of life.
How many cells does the body have?
The body has about 30 trillion cells.
What is diffusion?
Diffusion is the movement from one area of higher concentration to another area of low concentration.
What is osmosis?
Osmosis is the diffusion or movement of water across a semi-permeable membrane.
What is filtration?
Filtration is when substances are forced across a membrane that acts like a filter under pressure.
What is active transport?
Active transport moves substances across the cell membrane with the help of a carrier molecule.
What is ATP?
ATP stands for adenosine triphosphate energy.
What are the main parts of a cell?
The main parts of a cell are the cell membrane, cytoplasm, and nucleus.
What is the cell membrane?
The cell membrane is selectively permeable and allows some substances to pass.
What is inside the cell?
Inside the cell is made up of water, proteins, ions, and nutrients.
What is the nucleus?
The scenter and brain of the cell. Contains chromosomes
What is mitosis?
cell division
What happens during mitosis?
During mitosis, the cell membrane constricts to divide the cytoplasm, resulting in two identical new cells.
What is DNA?
the primary component of genes.
Where is DNA found?
DNA is found in the nucleus of the cell.
What is a gene?
A gene is a segment of DNA that determines your body traits.
What do genetic techniques involve?
Genetic techniques involve using or manipulating genes.
What is the Polymerase Chain Reaction (PCR)?
PCR is a quick and easy method of making millions of copies of any fragment of DNA.
What is PCR used for?
PCR is used in the study of genetics and is a necessary tool for improving human health.
What is the significance of PCR?
PCR is a leading tool for new kinds of genetic testing.
