Flashcards
Biology Revision - Y10 Mock
Cards in this deck (38)
- 1How do you measure BMI?
- 2What is Kwashiorkor?A protein deficiency. Common in developing countries where there is a demand for protein rich foods yet there is not enough available for everyone.
- 3How do you measure EAR?EAR(g) = 0.6 x body mass(kg)
- 4What is EAR?Estimated Average daily Requirements of protein.
- 5What may vary a person's EAR?Age, pregnancy and body mass.
- 6Why do teenagers need more protein?Because they are still growing.
- 7What must a balanced diet contain?Carbohydrates, Proteins, Fats, Vitamins and Minerals & Water.
- 8What are proteins made of?Amino Acids
- 9Which enzymes digests Carbohydrates?Carbohydrases.
- 10Which enzymes digests Proteins?Proteases.
- 11Which enzymes digests Fats?Lipases.
- 12What does carbohydrate break down into?Glucose.
- 13What does protein break down into?Amino Acids.
- 14What does fat break down into?Fatty acids and Glycerol.
- 15Where are carbohydrases found?1) The mouth
2) The small intestine - 16Where are Proteases found?1) The stomach
2) The small intestine - 17Where are Lipases found?1) The small intestine
- 18How is the small intestine adapted to digestion?1) It's very long so a lot of time to digest food.
2) Big surface area. Covered in millions and millions of Villi.
3) Each cell on the surface of the Villus also has Microvilli that increase the surface area even more.
4) Villi have a very thin, single permeable layer that has a very good blood supply that allows quick absorption. - 19How are food molecules absorbed into the blood?By diffusion.
- 20What is meant by Fitness?How well you can perform physical tasks.
- 21What is meant by Health?Being free of disease and infections.
- 22What is positive tropism?Towards the stimulus.
- 23What is negative tropism?Away from the stimulus.
- 24What is geotropism?Growth in response to the direction of gravity.
- 25What is phototropism?Growth in response to the direction of light.
- 26What is Auxin?A plant growth hormone
- 27What do auxins do?Change the direction of root and shoot growth.
- 28Name 3 commercial uses of plant hormones.Killing weeds, growing cuttings & ripening fruit.
- 29What does a pyramid of biomass show?The mass of living material at stages of the food chain.
- 30What does a pyramid of numbers show?The quantity of organisms at that stage in a food chain.
- 31What is a parasite?An organism that lives off a host and takes what they need but doesn't give anything back.
- 32What is mutualism (mutualistic relationship)?A relationship where both organisms benefit.
- 33What is a depressant?A drug that decreases activity of the brain. This slows down the response of the nervous system causing slow reactions and poor judgement of speed and distance.
- 34What is a stimulant?A drug that increases brain activity and makes you feel more alert and awake. Does the opposite of a depressant.
- 35What are the 4 main proteins?Enzymes, Carrier Molecules, Hormones & Structural Proteins.
- 36What is the role of an enzyme?To control cell reactions.
- 37What is the role of a Carrier Molecule?To transport smaller molecules around the body.
- 38What is the role of a hormone?To carry messages around the body.