Flashcards in Cell Biology Deck (32):
Cell wall not always present
Cell wall made out of cellulose
DNA is located in nucleus
Has membrane bound organelle
Cell wall is made out of Murien
Contain circular DNA called plasmids
DNA is in a singular free floating loop
Site of protein synthesis
Where respiration takes place
The equation for respiration
Glucose + oxygen -> carbon dioxide + water + energy
Equation for photosynthesis
Carbon dioxide + water -> glucose + oxygen
Advantages of light microscopes
Can magnify life objects as oppose to electron microscopes
Equation for magnification
Requires only one parent and will create identical clones
What do you need when growing bacteria?
Provide nutrients (agar or broth)
A medicine that inhibits the growth of it destroys microorganisms
Preventing the growth of disease causing bacteria
A chemical liquid that destroys all bacteria
When cells become specialised for a particular function. Plant cells can differentiate all the way through their life whereas animal cells can only differentiate at an early stage and then are stuck
The cell cycle
1. Cell growth
2. Nucleus divides also known as mitosis
3. Cell membrane divides and now the cells are two spectate clones
Chromosomes stored inside
Large molecules of DNA that has a double helix structure. Always 23 pairs or 46 individual
Short sections of DNA that code for one protein or characteristic
Sex cells, the egg and sperm
Chromosomes are separated into identical sets, then they pull apart and end up in its own nucleus
Stage 1 of mitosis
Growth and replication
Stage 2 of mitosis
The chromosomes line up and begin to pull apart
Stage 3 of mitosis
The nucleus divides into 2 identical nuclei
A cell that can become any other cell, they are undifferentiated
What types of stem cells are there?
Embryonic which can change into mostly any cell
Adult stem cell these can become cells that need to be replaced more often
The spreading of particles from an area of high concentration to an area of low concentration down a concentration gradient until equilibrium is met. This can only happen in fluid and it is a passive process which means is required no energy
What affects diffusion?
Temperature-more kinetic energy
Surface Area-More space for movement
Gradient- the difference between them
A special form of diffusion that only talks about water. The movement of water from a dilute to a concentrated solution through a partly permeable membrane.
Concentration of solutes in the solution surrounding the cell is greater than inside the cell. This may cause the cell to plasmolyzed or in the case of an animal cell, shrivel up.
Concentration of solutes surrounding the cell is lower than inside the cell. This causes the cell to become turgid or in the case of an animal cell even burst.
The concentration of solutes both inside the cell and outside are the same. The cells are flaccid.