Science - year 8 exam - cells Flashcards
- List the 3 main points of Cell Theory
- All _____ things are made up of ___
- Cells are the ______ units
- All cells come from _________ cells through the process of ___ _______.
List the 3 main points of Cell Theory
- All living things are made up of cells
- Cells are the smallest units
- All cells come from pre-existing cells through the process of cell division.
- Match the organelle to its function
- Nucleus
- A flexible layer that controls the ________ of substances in and out of the ___
- Cell wall
- Contains ________ to trap light energy needed for _____________
- Cell membrane
- Jelly like fluid that fills the cell and contains many ________ for life
- Mitochondria
- Made of tough material called ________ to provide support to the ___
- Cytoplasm
- Uses sugar and oxygen in _________ to release energy for the cell to use
- Chloroplast
- Controls function of ___. Contains ____
- Match the organelle to its function
- Nucleus
- A flexible layer that controls the movement of substances in and out of the cell
- Cell wall
- Contains chlorophyll to trap light energy needed for photosynthesis
- Cell membrane
- Jelly like fluid that fills the cell and contains many chemicals for life
- Mitochondria
- Made of tough material called cellulose to provide support to the cell
- Cytoplasm
- Uses sugar and oxygen in respiration to release energy for the cell to use
- Chloroplast
- Controls function of cell. Contains DNA
- Compare a plant cell and an animal cell
Plants:
- Has a cell ________
- Has ________.
- Has a ______.
- Often have chloroplasts containing ________.
Animlas:
- Have no __________.
- Have only ____ vacuoles.
- Often irregular in _____.
- Do not contain _____.
- Compare a plant cell and an animal cell Has a cell membrane
Plants:
- Has a cell membrane
- Has cytoplasm.
- Has a nucleus.
- Often have chloroplasts containing chlorophyll.
Animlas:
- Have no chloroplasts.
- Have only small vacuoles.
- Often irregular in shape.
- Do not contain plastids.
What was Robert Hooke famous for?
Discovering the law of ________… (Hooke’s law)
What was Robert Hooke famous for?
Discovering the law of elasticity… (Hooke’s law)
Define a unicellular organism
A lifeform with one ___.
Define a unicellular organism
A lifeform with one cell.
What is the purpose of the nucleus in a cell?
Controls and regulates the ________ of its cell.
What is the purpose of the nucleus in a cell?
Controls and regulates the activities of its cell.
labels of the heart
Superior ___ cava
Right ________ vines
_____ atrium
Right ________
ao__a
Pulmonary _____
___ atrium
Left _______
labels of the heart
Superior vena cava
Right pulmonary vines
Right atrium
Right ventricle
aorta
Pulmonary artery
Left atrium
Left ventricle
Digestive system
The human digestive system involves the _______ down of foods and liquids into smaller and compact __________, until they can be absorbed into the body.
Digestive system
The human digestive system involves the breaking down of foods and liquids into smaller and compact components, until they can be absorbed into the body.
Circulatory
The circulatory system, is an _____ system that permits blood to circulate and transport nutrients, oxygen, _____ dioxide.
Circulatory
The circulatory system, is an organ system that permits blood to circulate and transport nutrients, oxygen, carbon dioxide.
Excretory
The excretory system is a passive biological system that removes excess, unnecessary _______ from the body fluids of an organism, to help prevent ______ to the body.
Excretory
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, to help prevent damage to the body.
Respiratory
The respiratory system is a ________ system consisting of specific organs and structures used for gas exchange in animals and _____, and humans.
Respiratory
The respiratory system is a biological system consisting of specific organs and structures used for gas exchange in animals and plants, and humans.
Skeletal
The human skeleton is the internal ________ of the human body. It is composed of around 270 bones at ____ – this total decreases to around ___ bones by adulthood. The bone mass in the skeleton reaches maximum ______ around age 21.
Skeletal
The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood. The bone mass in the skeleton reaches maximum density around age 21.
Muscular
The muscular system is an organ system consisting of skeletal, smooth and ______ muscles. The muscular systems controls through the ______ system although some muscles can be completely autonomous, without ________ movement.
Muscular
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. The muscular systems controls through the nervous system although some muscles can be completely autonomous, without conscious movement.
Assign names for each part of the microscope
- ___ piece
- Coarse ________ knob
- ____ focussing knob
- S__ge
- Objective ___
- Ba__
- Di______gm
Assign names for each part of the microscope
- Eye piece
- Coarse focussing knob
- Fine focussing knob
- Stage
- Objective lens
- Base
- Diaphragm
Identify the equation for photosynthesis
6C_2 + 6H2_ → C6H12_6 + 6_2.
Identify the equation for photosynthesis
6CO2 + 6H2O → C6H12O6 + 6O2.
