cells and microscopes

Question 1

specimen

Answer 1

the object being looked at through a microscope

Question 2

how to calculate magnification

Answer 2

occular lens magnification x objective lens magnification

Question 3

cell theory

Answer 3

1. all living things are made up of cells2. cells are the building b.ocks of life3. new cells are produced from existing cells

Question 4

function of the nucleus

Answer 4

controls all activities of cell

Question 5

function of the cell membrane

Answer 5

the skin that hold a cell together and controls what comes into and leaves the cell

Question 6

function of the cytoplasm

Answer 6

watery, jelly-like mixture that contains many smaller parts where the work of the cell takes place

Question 7

function of the mitochondria

Answer 7

the powerhouse of the cells where energy is released from food

Question 8

function of ribosomes

Answer 8

structures that produce proteins

Question 9

function of lysosomes

Answer 9

organelles that get rid of waste from cells

Question 10

function of endoplasmic reticulum

Answer 10

pathways along which matierials move through a cell

Question 11

function of the cell wall

Answer 11

a rigid layer on the outside of a plant cell that provides the skeleton of a plant

Question 12

function of vacuole

Answer 12

contains waste and chemicals in animal cells and nutrients, water and waste in plant cells

Question 13

chloroplasts

Answer 13

the organelle in plant cells where photosynthesis takes place

Question 14

what is diffusion

Answer 14

the movement of molecules from a region of high concentration to an area of lower concentration down the gradient

Question 15

what does the term semi- permeable mean

Answer 15

a matierial or membrane will only allow certain substances to pass through it

Question 16

unicellular

Answer 16

a single celled oraganism, all life functions are carried out in that cell

Question 17

multicellular

Answer 17

living things made up of many cells

Question 18

specialised cells

Answer 18

cells with a special job, they have special structures that allow them to do that job

Question 19

tissues

Answer 19

groups of similar cells that all perform the same function in the body

Question 20

oragns

Answer 20

a structure that contains at least two different types of tissues that work together

Question 21

systems

Answer 21

two or more different organs that work together