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Bee EOC review sci meth, chem, water, enzymes Flashcards | StudBud
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Bee EOC review sci meth, chem, water, enzymes
Bee EOC review sci meth, chem, water, enzymes
20 terms
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scientific method, cell theory, organic molecules, water, enzymes microscopes
Flashcards
20 cards
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Questions
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Answers
1
Which molecules store genetic information for making proteins?
lipids
proteins
carbohydrates
nucleic acids
2
Which molecules are used for quick energy?
simple sugars/ monosaccharides
lipids
complex carbohydrates
proteins
3
Which microscope would provide the best image of the inside of an organelle?
transmission electron
compound optical
telescope
dissection scope
4
why is water important to life?
great solvent
expands when frozen
all of these!
high specific heat
5
Why can bugs walk on water?
it is adhesive and sticks to the bug
it is cohesive and sticks to itself
it is cohesive and sticks to the bug
it is adhesive and sticks to itself
6
One main difference in a law and a theory is that a law
is never proven
the start of a theory
is observable
is an educated quess
7
When water moves up the roots of plants it is due to
is polarity and cohesion
its cohesion and ionic nature
its polarity and ionic nature
its non-polarity and adhesion
8
A theory is usually
an explanation of unobservable events
about an observable event
made by one scientist
is just a guess
9
The main thing an enzyme does for a chemical reaction is
lower the activation energy
raise the activation energy
raise the temperature
slow down the reaction
10
The cell theory states that
all cells come from other cells
the cell is the smallest form of life
all are parts of the cell theory
all life is composed of cells
11
What can very high temperatures do to an enzyme?
make it work better
alter the pH
un ravel its shape/ denature it
change the chemical make up
12
A theory is
an explanation of a scientific event
supported by evidence
all of these
well accepted by scientists
13
of what are enzymes composed?
nucleic acids
proteins
carbohydrates
lipids
14
Water is a ___ molecule because it has a + and a - side
polar
non polar
ionic
covalent
15
the element found in all organic molecules is ---because---
Oxygen- it is needed for life
Carbon , it forms 4 covalent bonds
Hydrogen-, it bonds with lots of things
carbon, it forms 2 strong bonds
16
The part of an experiment that MUST be there to compare groups and determine if change occurred
dependent variable
hypothesis
independent variable
control
17
Which molecules make good barriers like cell membranes?
nucleic acids
carbohydrates
lipids
proteins
18
Which molecules are used as enzymes and structures?
proteins
lipids
nucleic acids
carbohydrates
19
Reactions with enzymes go ___then those with out enzymes.
slower
faster
20
When water sticks to itself, it is called ?
glue
adhesion
cohesion
ionic
