Science - biology

nucleus

contains genetic material

What is the function of the cell membrane?

Lets substances in and out of the cell

What is the function of cytoplasm

Where chemical reactions happen

function for the mitochondria

where aerobic respiration happens

What is the function of vacuole

contains cell sap

what is the function of the cell wall

holds the cell’s structure

the function of chloroplasts

where photosynthesis takes place

what is the function of ribosomes

where protein synthesis takes place

What is a eukaryotic cell

A cell with genetic material in the nucleus

define prokaryotic cell

A cell that has genetic material not in the nucleus

size of a eukaryotic cells

10 - 100 micrometers

How big are prokaryotic cells

0.1 - 5 micrometers

light microscope

Microscopes that can view objects the size of an atom

what is a electron microscope

Microscopes that can view items 100 times smaller

Define Magnification

How many times bigger the object can be made to be seen more clearly.

Define Resolution

the clarity of the image made

Write the equation for magnification

size of object x magnification = image size

State the 5 levels of organisation

cells, tissue, organ, organ system, organism

What is the digestive system

An organ system that digests and absorbs food into the blood stream.

function of the mouth

Begins the digestion of carbohydrates

What is the function of the stomach

Begins the digestion of protein - absorbs alcohol

What is the function of the small intestine

Completes the digestion of carbohydrates, protein and amino acids. Absorbs sugars, amino acids, fatty acids and glycerol

What is the function of the large intestine

Absorbs water and changes undigested food into faeces

What is bile

is an alkali to neutralise hydrochloric acid in the stomach

enzymes

convert food into small molecules that can be absorbed. The molecules are used to build new proteins and fat.

What does it mean that enzymes are specific

Particular enzymes can only break down particular nutrients into molecules

What is the meristem

Tissue that can differentiate into any type of cell

transpiration

The movement of water