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class 2
N/A
63
Biology
Undergraduate 1
08/27/2013

Additional Biology Flashcards

 


 

Cards

Term
What was the first cell ever discovered?
Definition
cork cell
Term
Who discovered the cell?
Definition
Hooke
Term
what year was the cell discovered?
Definition
1665
Term
when was the cell theory proposed?
Definition
1838
Term
what is a cell? what does it perform?
Definition
lowest level of structure, performs all characteristics of life
Term
where do cells come from?
Definition
previously existing cells
Term
what is cytology?
Definition
the study of cells
Term
what two fields developed modern cellular biology?
Definition
cytology and biochemistry
Term
what are the 3 types of microscopes?
Definition
light microscopes (LMs)
scanning electron microscope (SEM)
transmission electron microscope (TEM)
Term
what is the min resolution of a light microscope?
Definition
small bacteria
Term
what is the max resolution of a light microscope?
Definition
1000X
Term
what do molecules look like under a SEM?
Definition
3d and clear
Term
what does a TEM have to have associated with it to work?
Definition
a heavy metal
Term
What is the main purpose of a TEM?
Definition
to study the internal ultrastructure of cells
Term
what is the ratio of an object's image to real size?
Definition
magnification
Term
what is the measure of image quality?
Definition
resolution
Term
the higher the magnification, the more problems there are with
Definition
clarity
Term
what is the mag of the ocular lens on most LMs?
Definition
10x
Term
what is the only mag you can use the course objective knob on?
Definition
4x
Term
what do you need to use the 100x mag objective lens?
Definition
oil immersion lense
Term
what are the 3 purposes of the cell membrane?
Definition
1. to hold in organelles
2. to protect from the environment
3. allow things to move in/out as they should
Term
what kind of layer is the cell membrane?
Definition
living
Term
what kind of cells have a cell wall?
Definition
plant cells
Term
is a cell wall living or nonliving?
Definition
nonliving
Term
what is responsible for the structure of plants?
Definition
cell wall
Term
what does the central waste vacuole store?
Definition
waste, ions, proteins, and defensive compounds
Term
what does the nucleus direct the production of?
Definition
many compounds
Term
what does the nucleus of a cell contain?
Definition
DNA
Term
what is DNA in charge of?
Definition
cellular instructions
Term
cytoplasm is the ______ portion of a cell
Definition
liquid
Term
what does cytoplasm consist of?
Definition
water
Term
what does cytoplasm help the organelles do?
Definition
transport within cells
Term
what does cytoplasm contain?
Definition
organelles
Term
what is a molecule?
Definition
atoms joined together by some type of chemical bond
Term
atoms are the . . .
Definition
fundamental building blocks of all matter
Term
what is the charge of protons and where are they located in the atom?
Definition
positive, nucleus
Term
what is the charge of neutrons and where are they located in the atom?
Definition
neutral, nucleus
Term
what is the charge of electrons and where are they located in the atom?
Definition
negative, electron cloud
Term
what element is the basic building block of life?
Definition
carbon
Term
___, ____, ____, and ____ make up ___% of living matter
Definition
N, H, C, O
96
Term
what is a term for compounds dealing with C?
Definition
organic
Term
how many chemical bonds does C form?
Definition
4
Term
what are covalent bonds?
Definition
the sharing of electrons by 2 atoms
Term
is a covalent bond strong or weak?
Definition
strong
Term
what is the term for a large molecule?
Definition
macromolecule
Term
macromolecules are many
Definition
C, N, H, and O strung together
Term
macromolecules can be composed of ______ of atoms
Definition
thousands
Term
what are the 4 types of macromolecules?
Definition
1. lipids
2. carbs
3. proteins
4. nucleic acids
Term
3 of the 4 classes of macromolecules form chainlike molecules called . . .
which one does not?
Definition
polymers
lipids
Term
what are the repeated units in polymers called?
Definition
monomers
Term
how are compounds different from polymers?
Definition
compounds are not the same unit repeated over and over, and polymers are
Term
what is an example of a compound?
Definition
salt, NaCl
Term
what are organic compounds broken down for?
Definition
to yield energy (E) needed in metabolism
Term
what is fructose linked to glucose?
Definition
sucrose, table sugar
Term
what does it take to make and break polymers?
Definition
energy (E)
Term
is the process of making and breaking polymers similar or different for the different classes of macromolecules?
Definition
similar
Term
what do cells use to break down polymers?
Definition
chemical mechanisms
Term
what process disassembles the CB (covalent bond) in polymer?
Definition
hydrolysis
Term
what compound does hydrolysis require?
Definition
H20
Term
where is there the most hydrolysis in your body?
Definition
your intestines
Term
what kind of reaction is hydrolysis?
Definition
catabolic
Term
monomers are connected by CV via what process?
Definition
dehydration process
Term
what does making or breaking a polymer require, and what is it aided by?
Definition
energy, enzymes
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