B3 Quiz

Descripción

GCSE (B3 - Life on Earth) Biology Test sobre B3 Quiz, creado por Leah Firmstone el 31/10/2015.
Leah Firmstone
Test por Leah Firmstone, actualizado hace más de 1 año
Leah Firmstone
Creado por Leah Firmstone hace alrededor de 9 años
33
1

Resumen del Recurso

Pregunta 1

Pregunta
What is a species?
Respuesta
  • A group of organisms that can breed together to produce fertile offspring.
  • A group of similar organisms.
  • The environment in which an organism lives.

Pregunta 2

Pregunta
It is not just the environment that affects the chances of a [blank_start]organism[blank_end] surviving. Organisms are also dependant on other [blank_start]species[blank_end] for their survival. They may depend on other species for food or for their habitat. Many species of insect, for example, have habitats within or on particular [blank_start]plants[blank_end]. In a particular habitat there will be competition between species for resources. [blank_start]Animals[blank_end] may compete for breeding sites or territories, food, mates or living space. Plants may compete for space, [blank_start]light[blank_end], nutrients and water. A food web shows the feeding [blank_start]interactions[blank_end] of some of the species within a habitat. Because species depend on each other in many ways, any impact on one species within a food web will have a [blank_start]knock-on effect[blank_end] on many of the other species that are part of the same food web. Food webs are extremely useful because they give us a visual representation of [blank_start]interdependence[blank_end].
Respuesta
  • organism
  • species
  • plants
  • Animals
  • light
  • interactions
  • interdependence
  • knock-on effect

Pregunta 3

Pregunta
Using the diagram, choose the correct equation for photosynthesis.
Respuesta
  • carbon dioxide + water (+sunlight) -> glucose + oxygen
  • oxygen + water (+sunlight) -> glucose + carbon dioxide
  • glucose + oxygen -> carbon dioxide + water (+sunlight)

Pregunta 4

Pregunta
The efficiency of transfer of energy at each level of a food chain is the ratio of the energy available in the organism's tissues to the total amount of energy the organism has ingested. percentage efficiency = (energy in tissues/energy in food eaten) x 100
Respuesta
  • True
  • False

Pregunta 5

Pregunta
Complete the diagram of the carbon cycle.
Respuesta
  • decay by fungi and bacteria
  • respiration
  • dead remains of plants and animals
  • green plants are eaten by animals
  • CO2 added through combustion

Pregunta 6

Pregunta
Complete the diagram of the nitrogen cycle.
Respuesta
  • Nitrogen gas in the atmoshpere
  • Nitrogen-fixing bacteria in plant roots
  • Nitrogen-fixing bacteria in soil
  • Ammonium
  • Nitrates
  • Denitrifying bacteria
  • Detrivores
  • Decomposition
  • Amino acids/proteins in plants & animals

Pregunta 7

Pregunta
What are examples of non-living indicators?
Respuesta
  • mayflies
  • carbon doixide levels
  • temperature
  • phytoplankton

Pregunta 8

Pregunta
Organisms can be [blank_start]classified[blank_end] in many different ways. In the past, organisms were classified mainly by their [blank_start]appearance[blank_end]. Today, we have a much more [blank_start]accurate[blank_end] way of classifying organisms, based on their DNA [blank_start]sequences[blank_end]. Organisms with more similar DNA are likely to be more [blank_start]similar[blank_end] species. Classifying organisms in this way helps us to see how they [blank_start]evolved[blank_end]. A [blank_start]common[blank_end] ancestor is the most recent individual from which all organisms in a group are descended. Organisms with the most similar DNA have more [blank_start]recent[blank_end] common ancestors than those with [blank_start]less[blank_end] similar DNA.
Respuesta
  • classified
  • appearance
  • accurate
  • sequences
  • similar
  • evolved
  • common
  • recent
  • less

Pregunta 9

Pregunta
Biodiversity is the word used to describe the variety of living things in a habitat.
Respuesta
  • True
  • False

Pregunta 10

Pregunta
Define 'Sustainability'.
Respuesta
  • Finding a way to meet our needs now without stopping future generations from meeting their needs.
  • Using renewable resources.

Pregunta 11

Pregunta
How can we improve sustainability?
Respuesta
  • recycle more
  • use products that need little energy to be produced
  • use bio-degradable products
  • conserve our finite resources
  • use more electricity
  • increase packaging
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