Cell Biology

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What is the function of the Nucleus?
Contains genetic material, which controls the activities of the cell
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What is the function of the Cytoplasm?
Most chemical processes take place here, controlled by enzymes
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What is the function of the Cell Membrane?
Controls what goes in and out of the cell
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What is the function of the Mitrochondria?
Most energy is released by respiration here
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What is the function of Ribosomes?
Protein synthesis happens here
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What is the function of the Cell Wall?
Strengthens the cell
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What is the function of the Chloroplast?
Contain chlorophyll, which absorbs light energy for photosynthesis
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What is the function of the Permanent Vacuole?
Filled with cell sap to help keep the cell turgid
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What is the magnification formula?
Magnification = image height / object height
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What is a stem cell?
A stem cell is a type of cell found in the body, that can replicate any other type of cell in the body.
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What type of stem cells are there?
Adult Stem cells and Embryonic Stem cells
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Which one is more useful?
Embryonic stem cells
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Why?
Because unlike other stem which can only replicate their type of cell. E.g. Skin stem cells can only make skin cells. Embryonic stem cells can replicate any type of cell in the body.
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Where can stem cells be found?
Brain, Bone Marrow, Blood, Blood Vessels, Skeletal Muscles, Skin ,Liver
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What does “Aseptic” mean?
Free from microbes
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What four things do bacteria need to survive?
Oxygen (O2, small two) , Warmth, Food, Moisture
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What is agar?
Agar is a jelly containing a mixture of nutrients to help the microbe to grow.
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Where are Petri dishes kept?
Petri dishes can be kept in incubators which help the microbes to grow.The Petri dish is flat to give the microbe plenty of surface to grow on. The lid stops unknown microbes dropping onto the agar and contaminating the culture.
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What temperature should we incubate our microorganisms at?
25 degrees
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DNA stands for:
deoxyribonucleic acid.
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How many chromosomes does each human cell contain
Each human cell contains 46 chromosomes
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How many chromosomes in sex cells?
Female sex cell=23, and males have the same
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What do female sex chromosomes supply?
XX
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What do male sex chromosomes supply?
XY
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What happens when a cell is divided by mitosis?
two new cells form, each cell is genetically identical to the other one, replication of chromosomes, genetic material is doubled, separation of the chromosomes: division of the nucleus, division of the cell to form two identical cells.
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Other cards in this set

Card 2

Front

What is the function of the Cytoplasm?

Back

Most chemical processes take place here, controlled by enzymes

Card 3

Front

What is the function of the Cell Membrane?

Back

Preview of the front of card 3

Card 4

Front

What is the function of the Mitrochondria?

Back

Preview of the front of card 4

Card 5

Front

What is the function of Ribosomes?

Back

Preview of the front of card 5
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