literally memorizing the whole revision worksheet (im shameless(

Question 1

differentiate between animal and plant cells

Answer 1

both have cell membranes, cytoplasm, mitochondria and a nucleus.

animal cells do not have a cell wall, vacuoles, or chloroplasts

Question 2

function of cytoplasm

Answer 2

chemical reactions take place

Question 3

function of cell membrane

Answer 3

controls what goes in and out of a cell

Question 4

function of nucleus

Answer 4

contains genetic material and controls the activities of the cell

Question 5

function of mitochondria

Answer 5

respiration occurs

Question 6

function of cell wall

Answer 6

strengthens the cell and provides support

Question 7

function of vacuole

Answer 7

stores substances and manages waste

Question 8

function of chloroplast

Answer 8

photosynthesis takes place

Question 9

what is aerobic respiration and its formula

Answer 9

aerobic respiration is a biological process in which food glucose turns into energy in the presence of oxygen

glucose + oxygen –> carbon dioxide + water

Question 10

what are enzymes

Answer 10

enzymes are biological catalysts: proteins that speed up the chemical reaction and aids in digestion. Enzymes break down big particles into smaller particles.

Question 11

what are the three main enzymes used in our digestion process

Answer 11

-carbohydrase or amylase
-protease
-lipase

Question 12

what is the relation between enzymes in commercial baby food.

Answer 12

Babies can have a hard time digesting high protein foods, so enzymes are added to their food to aid in digestion by turning the proteins into amino acids.

Question 13

describe a muscle tissue

Answer 13

• a muscle is a contractile tissue that brings about movement
  -it has the special ability to relax and contract to produce movement
  -muscle tissue is highly cellular and is well supplied with blood vessels
  -

Question 14

name the organs involved in digestion and their functions

Answer 14

teeth, salivary glands, oesophagus, stomach, liver, gall bladder, pancreas, small intestine, large intestine, rectum/anus

Question 15

what are the four chambers of the human heart and their functions

Answer 15

the upper two, the right atrium and left ventricle receive incoming blood

the lower two, the left atrium and right ventricle pump the blood out of the heart

Question 16

CAPILLARIES

Answer 16

where substances diffuse, for example in the lungs with oxygen and blood

super narrow lumen & super thin walls

inelastic

super low blood pressure

Question 17

ARTERIES

Answer 17

carry blood away from the heart

narrow lumen but thick boi walls

elastic

very high blood pressure

Question 18

VEINS

Answer 18

carry blood to the heart

large lumen

less elastic & thin walls

lower blood pressure

Question 19

VALVES

Answer 19

prevents blood from flowing backward

Question 20

what are the parts of a leaf

Answer 20

cuticle, epidermis, palisade mesophyll, spongy mesophyll, lower epidermis, stoma

Question 21

cuticle function

Answer 21

cuticles prevent water loss

Question 22

epidermis

Answer 22

thin to let light in to the chloroplasts

Question 23

palisade mesophyll

Answer 23

has a lot of chloroplasts to absorb the light

Question 24

spongy mesophyll

Answer 24

has spaces of air to let carbon dioxide diffuse through the structure

Question 25

stoma

Answer 25

holes in the leaf that let carbon oxygen in and diffuse oxygen out

Question 26

guard cells

Answer 26

opens and closes the holes to prevent water loss

Question 27

female reproductive parts of a flower

Answer 27

the pistil is the entire reproductive part

stigma (where the pollen attaches)

style (a long tube to the ovary bellow)

ovary (produces eggs)
ovule (the eggs)

Question 28

male reproductive parts of a flower

Answer 28

anther (produces pollen)

filament (supports the anther)

Question 29

differentiate between antiseptics and disinfectants

Answer 29

antiseptics
- to be used on living things and the body
- safe to use/ will not harm living tissues
-for cuts and open wounds
-kills microorganisms or prevents their growth

disinfectants:
-to be used on non-living things
-can be harmful and more toxic than antiseptic
-for toilet bowls, door knobs, etc
-destroys microorganisms

Question 30

name the types of adaptations in animals

Answer 30

structural adaptations ( a feature of the body)
e.g. temperature regulation, poison release

physiological adaptations (a bodily process)
e.g. bills and claws

behavioural adaptations.
e.g. hibernation, learned behavior

Question 31

how to prevent the risk of antibiotic resistant bacteria developing?

Answer 31

• take your medicine properly, as prescribed and instructed from a medical professional
• complete the full course of medicine without fail
• practice good hygiene such as handwashing

Question 32

how can you control the spread of infections is hospitals

Answer 32

• practice good hygiene

-wearing personal protective equipment

-appropriate handling and disposal of used medical instruments

-aseptic techniques, for example dressing wounds (prevention)

-appropriate sterilization of instruments

-

Question 33

differentiate between biotic and abiotic components of an ecosystem

Answer 33

Biotic factors are living things within an ecosystem; such as plants, animals, and bacteria, while abiotic are non-living components; such as water, soil and atmosphere.

Question 34

what is a seed bank?

Answer 34

seed banks are places used to store seeds to ensure biodiversity in the future, and that we will have resources to tap into when necessary.

-crop diversity
-climate change
-natural disaster
-provides material for research
-preservation from man made disasters.