Biology
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
What does a vacuole contain?
Cell Sap
What is process occurs in mitochondria?
Respiration
What process occurs in chloroplast?
Photosynthesis
What does a plant cell have that an animal cell does not?
A Cell Wall
What is a chlorophyll?
A green substance inside chloroplast that aids photosynthesis
Does a bacterium cell contain a nucleus?
NO, the genetic material floats around in the cytoplasm
What is diffusion?
The spreading out of particles from an area of high concentration to an area of low concentration
How are palisade cells specialised within a plant?
They are full of chloroplast and are near the top of the leaf meaning that they’re nearer the light and produce more photosynthesis.
How are Guard Cells specialised within a plant?
They open and close the stomata to control gaseous exchange and water loss
What is a stomata?
Pores that are found on the underside of the leaf, that release gas and water vapour.
What is a tissue? Not the thing you blow your nose with
A group of similar cells that work together to carry out a particular function
How are Red Blood Cells specialised within an animal?
They have a concave shape that increases surface area so that more oxygen can be carried. They are full of haemoglobin, that absorb the oxygen. Also, they have no nucleus so they can carry more oxygen.
What is an organ?
A group of different tissues that work together to perform a particular function
What is an organ system?
A group of organs that work together to perform a particular function
What mainly occurs in the Mesophyll Tissue?
Photosynthesis
What is the purpose of Xylem and Phloem?
To transport water, mineral ions and sucrose around the plant.
What is the word equation for Photosynthesis?
Carbon Dioxide + Water -> Glucose + Oxygen.
What are the 3 limiting factors on photosynthesis?
The amount of Light The Temperature The Amount Of CO2 surrounding the plant.
What 5 environmental factors affect the distribution of an organism?
Temperature Availability of Water Availability of Oxygen and Carbon Dioxide Availability of Nutrients Amount of Light
What piece of equipment can be used to study the distribution of organisms.
Quadrats
What do you need to think about when collecting environmental data?
Reliability and Validity
What is a catalyst and name an example of a biological catalyst
A catalyst is a substance that increases the the speed of a reaction without being changed or used up, e.g. Enzymes
What happens to an enzyme if it becomes too hot or is in the wrong pH?
It becomes de-natured.
What are the 3 digestive enzymes and their purpose?
Amylase- converts starch into sugars Protease- converts protein into amino acids Lipase- converts lipids into glycerol and fatty acids