Classification
Which animal group does a frog belong to?
Amphibians.
What structure controls what enters and leaves the cell?
Cell membrane
What is an adaptation?
A feature or behaviour that helps an organism survive in its environment.
What do we call a prediction that can be tested in an experiment?
A hypothesis.
Is a mushroom a plant?
No. It belongs to the fungi kingdom.
What kingdom does a mushroom belong to?
Fungi
Name an organelle that both plant and animal cells have in common
Mitochondria, cell membrane, cytoplasm, nucleus
Why do fish have gills?
Gills allow fish to take oxygen from water so they can breathe underwater.
What is the dependent variable?
The variable that is measured
What adaptation allows ducks to swim more easily?
Webbed feet.
Name 6 of the levels of the taxonomical classification system
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
If a cell were a school, which part of the cell would be like the principal because it controls what happens?
The nucleus
What adaptation does a polar bear have that helps it survive in cold environments? It has 2
Thick fur and/or a thick layer of body fat.
Why do scientists repeat experiments?
To make their results more reliable and check that their results are consistent.
In an experiment, what is the one thing that you deliberately change?
The independent variable.
Why wouldn't a whale be classified as a fish even though it lives in water?
Whales are mammals. They breathe air with lungs, give birth to live young and feed their young milk.
What is one major difference between a plant cell and an animal cell?
Plant cells have a cell wall and chloroplasts, while animal cells do not.
What are the 3 types of adaptations?
Structural, physiological, behavioural
A student investigates whether different amounts of water affect plant growth. What should they keep the same to make it a fair test?
Things such as the type and size of plant, soil, pot, amount of sunlight and temperature. Only the amount of water should change.
What part of a plant cell carries out photosynthesis?
The chloroplast.
A student is given a picture of an unknown animal. They know it has moist skin, lays eggs in water, and spends part of its life in water and part on land. Which animal group does it most likely belong to?
Amphibians.
What are the 4 levels of specialised cells?
Cells, tissues, organs, body systems
A stick insect looks very similar to a stick. What type of adaptation is this, and how does it help the insect?
Camouflage. It helps the insect blend into its surroundings and avoid predators.
A student wants to find out whether the temperature of water affects how quickly sugar dissolves. What should they change, what should they measure, and what should they keep the same?
What tool can you use to identify an unknown organism by making a series of choices?
A dichotomous key.