biology

• Constipation is the result of insufficient fibres in the diet
• Your body’s main source of energy is carbohydrates
• A green substance called chlorophyll  found inside the chloroplast
• Many plants depend on insects for pollination
• Gas exchange in the lungs occurs by diffusion.
• The movement of air into and out of the lungs is called ventilation.
• Proteins are very important for making new cells.
• Each air sac contains a number of tiny pockets called alveoli.
• Proteins are found in meat, fish, eggs, cheese, beans and milk.
• Blood contains liquid plasma, red blood cells and white blood cells.
• Lung cancer is a disease that destroys the lungs.
• Heart disease is a type of cardiovascular disease.
• People lack a nutrient for a long time can suffer a deficiency diseases.
• Obesity is the result of excess food.
• Carbon monoxide can be used  to package meat looks fresh.
• Viruses are parasites that they live on or in other organisms.
• Plants need carbon dioxide to make glucose for photosynthesis.
• Substances that speed up reactions are called catalysts.
• Organisms made of many cells are called multicellular.
• Some organisms are made of just one cell are called unicellular.
• Strawberry plants use runners for asexual reproduction.
• Cabbages are rich in sulfur compounds.
• Microorganisms are an important part of an ecosystem.
• Organic compounds include carbohydrates, proteins and fats.
• Honey bees use nectar to make honey.
• Protoctists are mostly unicellular and some cause diseases.
• Bacteria use a method of asexual reproduction called binary fission.
• The anaerobic respiration of microorganisms is called fermentation.
• Scientists use samples to estimate populations.
• Disinfectants are good at killing microorganisms.