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Biology Midterm Exam
Terms in this set (73)
what should you wear when working with heat or strong acids or bases?
when heating something in a test tube, what should you do with the test tube?
point the test tube away from you
what lens do you look through in a microscope?
how do you find the total magnification of a microscope?
objective x eyepiece
of a standard light microscope, which objective lens will give you the largest field of view?
What would you use to lower the amount of light going through a specimen?
In a well designed experiment, how many variables are different between the control and experimental groups?
what is a hypothesis?
a proposed explanation that can be tested
in a well designed experiment, at what times should you record data?
Before and After
after identifying the problem, what is the next step in the scientific method?
make a hypothesis
what is the last step in the scientific method?
what is used in an experiment to show general trends?
why is water considered a polar molecule?
positive at one end and negative at the other
when a water molecule combines with a different polar molecule it is called?
why can't water combine with a non polar molecule?
non polar doesn't have a charge
because of water's polarity, it can dissolve many substances and serves to help with ______ in a cell
one the pH scale (between pH of 3,5,8,11), which one is most acidic? which one is most basic?
which element, along with hydrogen, is found in all organic compounds?
is water organic or inorganic?
is salt organic or inorganic?
is fat organic or inorganic?
examples of lipids:
fats, oils, and waxes
components of lipids:
fatty acids and glycerol
which element found in proteins make them different from lipids and carbohydrates?
two major groups of carbohydrates?
monosaccharides and polysaccharides
monosaccharides are also known as ____ and an example is ____.
simple sugars, glucose
How did we test for the presence of suguars
polysaccharides are also known as ______which are made up of_____.
What did we use to see if a potato has starch in it?
Nucleic acids, such as ____ and ____, carry _____ information .
DNA, RNA, genetic
Which organic compound is made from the synthesis of amino acids?
what organic compound would an enzyme be?
what is the role of an enzyme
acts as a catalyst to bring out a chemical reaction
these are different types of enzymes based on their specific...
in a dehydration synthesis, what is removed from the compound?
in chemical reactions, what can help to either break down material and combine material,without becoming part of the product?
why would it be common sense to think that the cell theory came after the light microscope was invented?
light microscope was needed to see cell
put in correct order from simplest to most complex
today,what type of microscope is used to see certain atoms?
regulates what material goes in and out of the cell
only found in animal cell and its important for cell reproduction
another name for cell membrane
found in all cells and aid in chemical reactions
uses oxygen in the process of respiration
helps with the movement of materials within a cell
cell organelle needed for photosynthesis
the nonliving part of a plant cell
diffusion is the movement of particles from ______ concentration to _____ concentration
a cell that contains 1% salt is placed in a solution of 2% salt, what happens?
water leaves cell
a cell that contains 1% salt is placed in a solution of 0% salt, what happens?
water enters cell
what molecule(s) found in the plasma membrane helps with transport?
type of asexual reproduction that results in the formation of genetically identical daughter cells-
3rd phase, chromosomes line up in middle
1st phase, normal cell operation
5th phase, state of cytokinesis
2nd phase, replication of chromosomes
4th phase, movement of chromosomes to opposite ends
if an organism has 35 chromosomes in each cell, how many chromosomes in each daughter cell after mitosis?
in mitosis one DIPLOID cell will produce___ DIPLOID cells
autotrophs get their nutrition by
photosynthesis and chemosynthesis
the process of respiration occurs in the organelle _______ and releases ______ for use by the cell
mitochondria and energy
the energy an organism can use for life processes is found in the molecule called
in a leaf, the materials of ____ and ____ with light produce _______
C02 and H2O, C6H12O6O2 and H2O
a cheetah eating a zebra or an earthworm ingesting plant material, shows the life process or function of
all the activities needed to keep an organism alive (nutrition, growth, excretion, transport) is called the organisms ______
grass seeds germinating, shows the living characteristics of
which living characteristics is not needed for you to survive?
when you get hot, you perspire taking heat away from you- this is an example of
taking materials into an organism and moving them around is called
______ is the removal of wast from an individual
_____ cannot make their own organic molecules and must get them from the environment
egestion is the same as _______
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