Questions For The Summer Test Flashcards
What did Alexander Fleming accidentally discover
He accidentally discovered penicillin by observing that bacteria didn’t grow near mold
How can you tell something is a living thing
It is made of cells
nutrient:how they make get food
Excretion:how they get rid of waste
Response:how they react to changes in there surroundings
Reproduction:how they make more of their own kind
What are animals called with a back bone
Vertebrates
What are animals called without a back bone
Invertebrates
How do u prepare an onion cell
Cut an onion and peel thin layer of cells off and place a pice under a microscope. Put a drop of iodine stain on the cheek and place a coverslip on top of it. Place the slide on the stage of the microscope and secure with clips. Switch on the microscope and put it to the low power objective lens and move the stage using the course focus wheel. Look through the eyepiece lens and use the course wheel to make the onion cells visible.
What is a cell membrane
It controls what enters and leaves the cell
What is a nucleus
It is the control centre of the cell
What is cytoplasm
It is a watering gel in which cell reactions occur in. It also supports the cell
What is a cell wall
A cell wall is found outside the membrane of plant cells. It is made of cellulose and gives strength to plant cells
What is a vacuole
It is a storage area containing liquid. It pushes against the cell wall to give support to plant cells
What is amylase
Amylase in Silvia digested the starch into maltose
Name 3 blood vessels
Arteries,Veins,Capillaries
What does the heart do
It pumps blood around the body
What is energy
Energy is the ability to do work and it is measured in the unit Joule(J)
What is the principle of conservation energy
The principle of conservation energy is that energy cannot be created or destroyed it can only be changed from one form to another
Name the 8 forms of energy
Kinetic
Potential
Heat
Light
Sound
Chemical
Electrical
Nuclear
What is renewable energy
Renewable energy will not run out examples of renewable energy is wind,solar,hydroelectric,biomass and geothermal
What is non-renewable energy
Non-renewable energy is energy that will run out examples of these are coal,oil,gas and peat. These are all fossil fuels
What are fossil fuels
Fossil fuels are the remains of dead organisms from millions of year ago
What are advantages of nuclear energy
Advantages of nuclear energy are I does not release CO2 and it produces a large amount of energy and only uses a small amount of fuel
What are disadvantages of nuclear energy
Disadvantages of nuclear energy is that it produces radioactive waste and there is a danger of accidents and explosions
What does the universe consist of ?
The universe consists of the area of space containing the galaxies,stars and solar systems
What is the Galaxy
A galaxy is a collection of millions of stars along with gases and dust held together by gravity forces
What is Pluto
Pluto is considered a planetoid (dwarf planet) as it is too small to be a planet but too large to be an asteroid.
What keeps the plants in orbit of the sun?
The force of gravity.
Define the term cells
The basic building blocks of living things
Define the term nutrition
The way in which living things get their food
Define the term excretion
The way in which living things get rid of wastes that they produce
Define the term response
The way in which living things react to changes in their surroundings
Define the term reproduction
The way in which living things produce new living things
Define the term bacteria
Tiny microscopic living things. Some cause disease, some cause decay, some are used to produce valuable substances
Give me 3 examples of fungi
Mushrooms, moulds and yeast
Give me 3 examples of plants
Trees, grasses, flowers
Give me 3 examples of animals
Humans, fish, insects
Define the term biodiversity
Biodiversity means the range of living things.
Define the term cells
Living things are made of cells. Cells are the basic building blocks of all living things.
Name the 3 main parts in an animal cell
• A cell membrane
• A nucleus
• Cytoplasm.
What is a cell membrane and what does it do
The cell membrane is a very thin layer that surrounds the cell. Retains cell contents and
Controls what passes in and out of the cell
What is the nucleus and what is it’s importants
The nucleus is normally round.
Its function is to act as the control centre of the cell.
Define the term cytoplasm and explain its purpose
Cytoplasm is a watery liquid found between the nucleus and the cell membrane. It Carries out some cell reactions and it Supports tiny cell structures
What does the mitochondria do
Supplies energy to the cell (by respiration)
Name the five main parts of a planet cell
• A cell wall
• A cell membrane
• A nucleus
• cytoplasm
• A vacuole.
Define the term a cell wall and explain its use
A cell wall is found outside the cell membrane in plant cells. It Gives strength to the cell
What is the function of the chloroplast
Makes food (by photosynthesis)
What is a vacuole and what is its main function
A vacuole contains liquid. If the vacuole is full of liquid, it forces the cytoplasm to push out against the cell wall. It Gives strength to the cell
