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IB Topic 3,7
cummalitive review
53
Biology
11th Grade
12/11/2010

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Term
Define Mitosis
Definition
Identical nuclear division,
part of eukaryotic cell division
Term
Function of Mitosis
Definition
growth, repair, asexual reproductio of two-identical nuclei
Term
T or F:
Does meiosis produce two daughter cells?
Definition
FALSE! Unlike mitosis, it produces FOUR daughter cells
Term
Cell division includes what two types of division?
Definition
1) Nuclear division (Mitosis or meiosis)
2) Cell membrane division
Term
Which cells Prokaryotic or Eukaryotic
does mitosis AND meiosis occur?
Definition
EUKARYOTIC!
Prokaryotic's cell division only occurs by binary fission, NOT MEISOSIS
Term
Meiosis
Definition
Sexual reproduction of four daughter cells and production of gametes
Term
Translation
Definition
Process where the language is changed from nucleotide language of RNA to a.a language in polypeptide
Term
Stages of Mitosis
Definition
1. INTERPHASE 75% of time
2. prophase
3. metaphase
4. anaphase
5. telophase
Term
What determines the type of diffusion?
Definition
Size, polarity and need of the cell
Term
Passive Transport
Definition
movement of substance with concentration gradient (high to low)
-does not require ATP
-sometimes it needs a plasma protein
**(AKA facilitative transport)
Term
Active Transport
Definition
movement of substance AGAINST concentration gradient. (low to high)
-reqquire ATP
-requires PUMP protein channel
Term
Hypertonic cell
Definition
more solute in the environment of the cell.
osmosis is the movement of water molecules from hypertonic to hypotonic
Term
Isotonic cell
Definition
the cell will maintain shape, the concentration is equal. Cell gains water at the same rate the cell loses water
Term
Hypotonic Cell
Definition
Environment is hypotonic to the cell
The cell will increase through osmosis
Term
Interphase
Definition
Include (G1, S, and G2)
G1: cell grows and develops
S: synthesis of DNA to replicate
chromosomes
G2: chromosomes begin to condense
DNA is replicated to form TWO chromatids
Centrosome is also replic. (spindles)
Term
1cm=10^x micrometer
Definition
10^4
Term
1cm=10^ x nanometer
Definition
10^7
Term
Prophase
Definition
chromosomes coil and appear as double chromatids, nuclear membranes begin to dissolve
Term
Metaphase
Definition
spindle fibers form, chromatids line at the center
Term
Anaphase
Definition
Chromatids shorten, retract and pull the chromosomes apart
Term
Telophase
Definition
Cell plate begins to form or pinches, where the new cell wall will form
Term
Cytokenesis
Definition
Division of cytoplasm, last stage of interphase
Term
How mitosis produces two genetically identical nuclei
Definition
The result of the process of mitosis is two nuclei.
During S phase, each chromosome replicates (forms an exact copy of itself). These copies are called sister chromatids.
These identical sister chromatids are separated during Anaphase, and are moved to each pole. When they are separated they are referred to as chromosomes. The result is two nuclei, identical to each other and to the original nucleus.
Term
FXN: Carbon
Definition
backbone for organic molecules--molecules found in living things
Term
FXN: Hydrogen
Definition
used in active transport, photosynthesis, cell respiration
Term
Function of Oxygen
Definition
aerobic respiration
Term
FXN of Nitrogen
Definition
production of amino acids
Term
FXN: Iron
Definition
found in hemoglobin, binding site for oxygen
Term
FXN: Calcium
Definition
For bones, teeth, synapsis
Term
FXN: phosphorous
Definition
1) phospholipid bilayer
2) ATP
3) DNA
Term
FXN: Sulfur
Definition
found in some amino acid "R" group
Term
FXN: Sodium
Definition
transport funciton (Na/K pump)
Term
FXN: potassium
Definition
active transport
Term
FXN: Chlorine
Definition
found in salt
Term
Cohesive properties in water lead to..
Definition
1) Capillary action
Water will move up xylem in plant against gravity
2) Surface tension
strong enough to support insects
Term
Exocytosis
Definition
To export material from the perimeter of the cell
Term
Endocytosis
Definition
To import material external from the cell
Term
Phagocytosis
Definition
Endocytosis of proteins and nutrients required by the cell
Term
macromolecule
Definition
molecule containing a very large number of atoms such as lipids that have long chains of carbon and functional group
Term
How does the fluid nature of the plasma membrane
Definition
Term
How does the fluid nature of the P.M allow it to change shape?
Definition
The PM breaks and reforms during endo and exocytosis.
-pinching off to enclose particles
-ends of membrane reattach because of the way the phospholipid bilayer responds to H20
Term
Endocytosis
Definition
The cell membrane envelops a molecule and releases into the cell by connecting and then pinching off via vesicle
Term
Exocytosis
Definition
The cell membrane develops a "bump" in the membrane, excreting it through the expansion of the cell, transports VIA Vessicle
Term
Hydrolysis
Definition
RXN where large molecule (protein/ polypeptide) with the help of water will be broken down into a smaller molecule (aa)
Term
Condensation
Definition
-H20 is released
to build a polymer
Term
Heat Capacity of WATER
Definition
How much energy is needed to change 1g of water to 1Celsius.
-H20: H-bonds are resistent to change
--therefore high heat capacity
Term
B Glucose has what polymer?
(OH is on top)
Definition
=polymer of B Glucose....
STARCH!
Term
A Glucose produces what polymer?
(OH is on bottom)
Definition
CELLULOSE
Term
Carboxyl functional group is found in what O. molecule?
Definition
Lipids!
It is an acid
Term
Hydroxide Group
( CC-OH)
Definition
alcohol
Term
SUCROSE
Definition
Glucose+Fructose
Term
MALTOSE
Definition
GLUCOSE+Glucose
Term
LACTOSE
Definition
glucose+ galactose
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