iGCSE Biology Questions

Descrição

Quiz sobre iGCSE Biology Questions, criado por Pranali Amlani em 25-11-2014.
Pranali Amlani
Quiz por Pranali Amlani, atualizado more than 1 year ago
Pranali Amlani
Criado por Pranali Amlani aproximadamente 10 anos atrás
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Resumo de Recurso

Questão 1

Questão
What does the nucleus do?
Responda
  • It controls all the activities of the cell and it contains genes on the chromosomes that carry the instructions for making the proteins needed to build new cells or new organisms.
  • The place wehere respiration is carried out.
  • Respiration occurs in the mitochondria, not the nucleus.

Questão 2

Questão
What do the plant cells contain that the animal cells do not?
Responda
  • Cell walls, chloroplasts and permanent vacuoles.
  • Ribosomes, chloroplasta and cells walls.

Questão 3

Questão
What is the definition of diffusion?
Responda
  • Diffusion is the net movement of particles from an area of high concentration to an area of low concentration, down the concentration gradient.
  • Diffusion is the net movement of particles from an area of low concentration to an area of high concentration, up the concentration gradient.

Questão 4

Questão
What is the formula for net movement?
Responda
  • paticles moving in-particles moving out
  • total particles-particles moving out

Questão 5

Questão
Red blood cells do not have a nucleus so that there is more space for haemoglobin to be stored. True or false?
Responda
  • True
  • False

Questão 6

Questão
A solution is made up of 2 parts. A solute and a solvent. A solvent dissolves in a solute.
Responda
  • True
  • False

Questão 7

Questão
What is the difference between a concentrated solvent and a dilute solvent?
Responda
  • A concentrated solvent has little solute dissolved in it and a dilute has a lot.
  • A concentrated solvent has a lot of solute dissolved in it and a dilute has only a little.

Questão 8

Questão
What is osmosis?
Responda
  • A special kind of diffusion invloving water molecules.
  • The name of the topic in which diffusion is a part of.

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