B2

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  • Created by: RubyGoad
  • Created on: 26-01-17 21:20
What do both plant and animal cells have?
Nucleus, cell membrane and cytoplasm
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What is only found in plant cells?
Cell wall, chloroplast and vacoule
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What is the function of chloroplast and vacoule?
Chloroplast turns light into glucose(photosythesis) and vacoule stores nutrients
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What is a specilised cell? give an example.
A cell that is adapted for a specifc job, for example sperm cell, egg cell, red blood cell, root hair cell
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What is diffusion?
Diffusion is when particles spread, they move from an area with high concentration to low concentration
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What are cells? give an example.
The building blocks of life. For example sperm cell, egg cell, muscle cell, root hair cell
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What are tissues? give an example.
a group of similar cells. For example muscle tissue, nervous tissue.
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What is a organ? give an example.
a part of the human body that performs a specific function. For example liver, kidney, heart, brain, skin, pancreas.
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What is a organ system? give an example.
A group of organs that work together to perform one or more function. For example the digestive system, reproductive system, respiratory system.
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What are the 3 main parts of a plant?
leaf, stem and roots.
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What is photosynthesis?
A procces by which plants turn energy from the sun into glucose.
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what is the word equation for photosynthesis?
carbon dioxide + water = glucose + oxygen + water
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What is the chemical equation for photosynthesis?
6CO(2) + 6H(2)O = C(6)H(12)O(6) + 6O(2)
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What function does the leaf play in photosynthesis?
Leaves absorb light and carbon dioxide.
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What is the limiting factor?
A factor that slows the rate of photosynthesis
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What are the 3 limting factors in photosynthesis?
Light, carbon dioxide concentration and tempreture
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How can you speed up photosynthesis?
Increase the limiting factor
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Why are sampling tecniques used?
To count the number of organisms in a habitat.
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Give an example of a sampling technique?
Quadrats, transcet tape.
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What are proteins?
Proteins are made from long chains of smaller molecules called amino acids.
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What do proteins act as?
Hormones, antibodies, catalyts.
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What are enzmes?
Protein molecules, biological catalyts.
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What are the two main types of enzymes?
Catabolic enzymes and anabolic enzymes
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What do catabolic enzymes do?
Break down large molecules into smaller molecules.
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What do anabolic enzymes do?
Build up small molecules into larger molecules.
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What use does enzymes have in the home?
They are used in biological detergents.
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What use do enzymes have in the industry?
Enzymes allow certain industrial processes to be carried out at normal temperatures and pressures, thereby reducing the amount of energy and expensive equipment needed.
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What is aerobic respiration?
A type of respiration that needs oxygen.
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What is anarobic respiration?
A type of respiration that dosen't require oxygen.
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Who is Mendel?
A scientist who used plants to discover speciation.
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What is speciation?
The forming of anew species.
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How does speciation work?
Isolation, mutation, natural selection and a new species has now occured.
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What is a species?
A group of organisms that can produce fertile offspring.
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What does endangered mean?
A species that's a risk of exctinction.
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What does exctinction mean?
When a species completley dies out.
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What does DNA stand for?
Deoxyribose nucelic acid
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What are chromosones made of and where are they found?
They are made up of gene's and are found in the nucleus.
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How many chromosones are in each cell?
46/23 pairs
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Which two cells do not contain 46 chromosones?
Egg and sperm cell, they only have 23.
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The two sex chromosones in males are...
XY
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The two sex chromosones in females are...
**
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What are gametes?
Sex cells
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What is mitosis?
A type of cell division that leads to growth or repair, when a cell divides by mitosis 2 new cells form or each cell is identical to the other.
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What is meiosis?
a type of cell division, cells that are formed by meiosis have half as many chromosomes as the cell that formed them.
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What is a gene?
A gene is a section of DNA that carries the code for a particular protein. Different genes control the development of different characteristics of an organism.
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What is cystic fibrosis?
Cystic fibrosis is an inherited disorder that affects the cell membranes, causing the production of thick and sticky mucus.
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Other cards in this set

Card 2

Front

What is only found in plant cells?

Back

Cell wall, chloroplast and vacoule

Card 3

Front

What is the function of chloroplast and vacoule?

Back

Preview of the front of card 3

Card 4

Front

What is a specilised cell? give an example.

Back

Preview of the front of card 4

Card 5

Front

What is diffusion?

Back

Preview of the front of card 5
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