IGCSE BIOLOGY GENERAL REVIEW Ch. 1-5 | Baamboozle - Baamboozle

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General review for the IGCSE BIOLOGY exam from chapters 1 to 5.

Study Slideshow

Name the characteristics of all living organisms.

Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition

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Define the term SPECIES

A group of organisms that can reproduce to produce fertile offspring.

15

Explain what is the BINOMIAL SYSTEM and how it is used.

A system of naming species in which the scientific name of an organism is made up of two parts showing the GENUS and the SPECIES. Eg. Homo sapiens

15

Biologists compare the s_________ of the b______in the ____ of organisms from different species to see how related they are.

sequences - bases

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Name the principal clases of the following groups: VERTEBRATES, ARTHROPODS, MOLLUSCS

VERTEBRATES: Mammals, Reptiles, Fish, Amphibians, Birds / ARTHROPODS: Crustaceans, Arachnids, Myriapods, Insects / MOLLUSCS: Bivalves, Gastropods, Cephalopods

25

Flowering plants can be classified into Monocotyledons and Dicotyledonds. Explain their 4 main differences.

Leaf shape (long and narrow vs braod), leaf veins (parallel vs branching), number of cotyledons (1 vs 2), grouping of flower parts (3 vs 5)

20

Why viruses are not considered living organisms and why aren't destroyed by antibiotics?

They can't live without a host (no MRS GREN). Antibiotics attack bacterial structures that viruses don't have (cell wall, cell membreane)

15

The picture shows and ANIMAL cell and a PALLISADE cell. Identify them and name their components.

Animal: Cell membrane, nucleous, mitochondria, cytoplasm. Plant: the same as animal PLUS cell wall, chloroplasts and big vacuole.

20

Explain how to calculate the MAGNIFICATION of an image.

M= I/A Magnification = Observed size of the IMAGE (or drawing) / ACTUAL size of the specimen

15

Define the term DIFUSSION and name 2 examples.

NET MOVEMENT of molecules and ions from a region of their HIGHER CONCENTRATION to a region of their LOWER CONCENTRATION down a CONCENTRATION GRADIENT (random)

25

Define the term OSMOSIS and name 1 example

NET MOVEMENT of WATER MOLECULES from a region of HIGHER WATER POTENTIAL (diluted) to a region of LOWER WATER POTENTIAL (concentrated) through a SEMIPERMEABLE ME

15

Explain the difference between PASSIVE and ACTIVE transport.

Active transport: movement of particles AGAINST a concentration gradient and using energy from cellular respiration.

15

Explain what happens to the cells in each case due to Osmosis:

1. No change in size / 2. Cell shrinks (plasmolysis) / 3. Cell swells up (turgid in plants, bursts in animals)

15

With all the info from the picture classify each solution depending on its tonicity

1. Hypertonic solution / 2. Isotonic solution / 3.Hypotonic solution

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Name the 3 factors that may affect the rate of diffusion.

1. Temperature, 2. Concentration gradient, 3. Surface area

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The image represents 3 biological molecules. Name them and identify each structure of the diagrams.

1. Fat molecule / 2. Protein molecule/ 3. Carbohydrate molecule

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