194822
| Question | Answer |
| What is three main parts of an animal cell? | Mitochondria; Nucleus; Cell Membrane |
| What is in the Nucleus? | DNA |
| What do Mitochondria do? | Power the cell |
| What does the cell membrane do? | Lets things in and out the cell |
| What two extra things do plant cells have? | Cell Wall and Chloroplasts |
| What is the purpose of the cell wall? | To provide support for the cell |
| What do chloroplasts do? | Absorb energy from sunlight for use in photosynthesis |
| Where is protein made in both plant and animal cells? | Ribosomes |
| What are the four parts of a yeast cell? |
Image:
yeast_cell (image/png)
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| How do yeast reproduce? | They reproduce by budding, asexual reproduction |
| Are yeast microorganisms or fungus? | BOTH! |
| What is the seven parts of the bacteria cell? |
Image:
Bacteria (image/png)
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| Where do yeast live? | Skin, Marine Water, Leaves & Flowers |
| What is yeast used for? | To produce beer, bread and in wine production |
| What can yeast cause? | Thrush in mouth and throat Viganal infections Diaper Rash |
| True or false: Yeast and bacteria are single celled? | True |
| What shape can bacteria be? | Sphere, Rod or Spiral |
| What is bacteria used for? | Some help plants absorb nitrogen Cause diseases like botulism Live in cows stomach to break down cellulase |
| What is flagella and what does it do? | The tail structure on bacteria that allows it to swim |
| What does the capsule do? | Stops white blood cells entering and killing the bacteria |
| What is the DNA different in bacteria? | As there is no nucleus, the DNA is spread out but is still controlling the cell |
| What is the fimbliae? | Allows bacteria to stick to each other or other things |
| What is a tissue? | A group of cells that have similar structures but carry out the same functions |
| What is an organ? | Organs are a group of tissue working together to carry out a particular function |
| What is the function of the small intestines? | To break down food, absorb the good parts and send them to the blood stream |
| The gas exchange system's function? | Is to oxygenise the red blood cells through diffusion and remove the carbon dioxide form the capilleries |
| What is an organ system? | A group of organs working together to carry out a function |
| What is an organ system? | A group of organs working together to carry out a function |
| What is diffusion? | The spreading out of particles from an area of high concentration to an area of low concentration |
| What is the purpose of a cell membrane during diffusion? | The membrane only lets small molecules like oxygen, glucose, amino acids and water through not large molecules like protein and starch. |
| What are five specialised cells? | Sperm, Red blood, fat, neurone, root hair |
| Functions of the specialised cells? | Sperm: Travel through female system to pass genetics on Red blood: To carry oxygen Fat cell: To store excess food Neurone: Carry messages quickly Root Hair: Enable plants to take in water |
| Equation of photosynthesis | CO2+water->glucose+oxygen |
| What is photosynthesis? | The process where glucose is produced using sunlight for food |
| What uses photosynthesis | Plants and algaes |
| How does water reach the cell? | via the Xylem |
| What affects the rate of photosynthesis? | Temperature, Light & CO2 |
| What causes the light to be a limiting factor? | Night time |
| What causes temperature to be a limiting factor? | Winter |
| What causes CO2 to be a limiting factor? | Warm and brightness |
| Where can these limiting factors be controlled? | A Greenhouse |
| How do plants use Glucose? | Respiration, making cell walls, making protein, it is stored in seeds and stored as starch |
| What might affect the distribution of organisms? | Temperature, water, oxygen and CO2, nutrients and light |
| What can speed the processes up inside living things? | Catalysts |
| What are catalysts? | A catalyst is something that increases the speed of a reaction, without be changed or used up in the reaction |
| What need to be controlled with a catalyst | Temperature and pH |
| Amylase breaks starch into what? | Sugars |
| Protease breaks proteins into what? | Amino acids |
| Lipase breaks Lipids into what? | Glycerol and fatty acids |
| What does bile do? | Neutralises stomach acids and emulsifies fats |
| Where is bile produced | Liver |
| Where is bile stored? | gall bladder and then released into the small intestine |
| What do salivary glands produce? | Amylase |
| What does the pancreas produce? | Protease, amylase and lipase. it releases these to the small intestines. |
| What does the small intestine produce? | Amylase, protease and lipase to complete digestion. |
| What is respiration? | The process of releasing energy from glucose, which happens in every cell |
| What is aerobic respiration? | Respiration using oxygen, it is the most efficient way to release energy |
| where does aerobic respiration occur? | Mitochondria |
| Equation for aerobic respiration | Glucose+oxygen-> CO2+water+energy |
| what is energy released used for? | build up large molecules from small ones, allow muscles to contract, keep body temp steady |
| when is anaerobic respiration used? | when there is not enough oxygen |
| equation for anaerobic respiration | glucose->energy+lactic acid |
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