Biology paper 1

• Which DNA-containing component of other living cells is missing from bacteria?

  Nucleus
• What is the name of the process that occurs in a cell's mitochondria?

  Respiration
• Neurotransmitters are received in the dendron and then cause an electrical impulse to be sent along the axon.
• The introduction of two types of new species can threaten an existing population with extinction. One type is a competitor, what is the other type?
• The function of ribosomes is to synthesise proteins.
• What name is given to the remains of organisms that lived many years ago, found in rocks?

  Fossils
• What is the cell membrane made of?

  Cellulose
• Which organ system coordinates the actions of the body?

  Nervous system
• Chloroplasts absorb energy from what?

  Sunlight
• What name is given to different forms of a gene?

  Allele
• Which parts of a cell provide the cell with energy?

  Mitochondria
• If a mutation gives an organism a survival advantage, that mutation is likely to be more common in the next generation.
• Would you find a large permanent vacuole in a plant or animal cell?

  Plant
• What type of structure, usually found in rocks, tells us about early forms of life?

  Fossil
• Which part of a cell synthesises proteins?

  Ribosomes
• Who proposed the theory that changes in living things that happen in their lifetime can be inherited by their offspring?

  Lamarck
• In a reflex action the signal from a sensory receptor is carried by a sensory neurone to a relay neurone.
• What name is given to someone who has a gene for a recessive genetic disorder, but does not have the disorder?

  Carrier
• It has half the chromosomes of a body cell.

  Haploid nucleus
• What is the name given to the genetic makeup of an organism?

  Genotype
• Charles Darwin's theory of evolution by natural selection

  states that all species of living things have evolved from simple life forms.
• The brain coordinates the reaction to a stimulus.
• which part of the sperm cell contains genetic material?

  nucleus
• Individual organisms of the same species are not identical. They have different genes and grow up in different environments.

  Variation
• Sperm cells are an example of gamete, which pass on genes.
• Fossils can show how organisms have gradually changed over a long period of time. This process is called evolution.
• Which part of a cell controls the cell's activities?

  Nucleus
• What is the name for long, coiled up lengths of DNA?

  chromosomes