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

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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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)

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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

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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.

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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

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Explain the difference between PASSIVE and ACTIVE transport.

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

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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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Name the characteristics of all living organisms.

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

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Use all your knowledge about ENZYMES to explain the following image:

The rate of reaction is affected by pH, not all enzymes work at the same pH, there's an optimum pH, denaturalisation, etc.

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Name the 4 factors that affect the RATE of ENZYME ACTION.

Temperature, pH, concentration of enzyme, concentration of substrate.

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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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How would you test for STARCH?

Add some drops of IODINE SOLUTION (orange), in the presence of starch it turns DARK BLUE.

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