Modual 1 Cells And Movement Of Substances Flashcards
How do you calculate the total magnification
Eyepiece lens X objective lens
Define the term resolution
Resolution is the ability to distinguish between two separate points in an image
What is the role of the nucleus
Contains DNA in the form of chromosomes contains the genetic code
What is the role of cytoplasm in a cell
This is where chemical reactions take place
What is the function of a cell membrane
Controls the substances that enters and leave the cell
What is the function of mitochondria in cells
This is the site of respiration. Glucose + Oxygen–> carbon dioxide + water vapour + ATP energy.
Define the word magnification
Magnification is how much bigger an image is compared to its actual size. Can be calculated via the iAM triangle
Function of the cellulose cell wall
This is the outer most part of a plant cell made of cellulose. It gives the plant support and strength.
Why are the ribosomes needed in a cell?
Ribosomes are the site (location) where the proteins are made.
What is the function of chloroplast in plant cells?
Chloroplast contains a green chemical which traps sun light energy this is needed for photosynthesis
What is the function of a vacuole
This stores food within a plant cell
What is a Eukaryote
This is a more complex version(evolved) of a prokaryotes eukaryotes contain a nucleus and much larger.
What is a Prokaryote
This is the oldest cell type , it lacks a nucleus and is small and simple.
What is diffusion
This is the transport of particles form an area of high concentration to and area of low concentration.
What does turgid mean
When a cell has to much liquid in it and it either bursts or becomes extremely swollen.
What does Concentrated mean
This is when there s two much of one fluid in a cell and it shrivels up.
What is lysis
When an animal cell burst due to to much sugar bursting an animal cell by osmosis
What is Active transport?
Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from the cell.
What are the adaptation
Blood arriving in the alveoli has a higher carbon dioxide concentration which is produced during respiration by the body’s cells. However, the air in the alveoli has a much lower concentration of carbon dioxide, meaning there is a concentration gradient which allows carbon dioxide to diffuse out of the blood and into the alveolar air.
