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BIOCHEMISTRY > Midterm > Flashcards

Midterm Flashcards

1
Q

Give 1 example of a highly electronegative atom.

A

Oxygen, Fluorine (any of the two)

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2
Q

What is the angle of a bent shaped water molecule?

A

104 degrees

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3
Q

Give 1 physical properties of water.

A

-color, turbidity, temperature, taste, odor (any of these)

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4
Q

A unique property of water that gives the ability to cling or stick into polar surfaces.

A

Adhesion, Adhesive Property (any term)

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5
Q

What are the nicknames of Water?

A

-Universal Solvent and Capillary Action

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6
Q

It is the greatest amount
component present in a
solution
A medium in which the
other substances present
are dissolved

A

SOLVENT

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7
Q

It is a lesser amount
relative to that of the
solvent
More than one ____ can
be present in the same
solution

A

SOLUTE

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8
Q

he solute(s) generally can be separated from the solvent by
physical means such as _____

A

EVAPORATION

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9
Q

Solutions used in laboratories and clinical
settings are often most liquids, and the
solvent is nearly always _____

A

WATER

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10
Q

Solvents other than Water

A

ETHANOL, CHLOROFOAM, TOLUENE

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11
Q

a procedure to
remove waste products and
excess fluid from the blood
when the kidneys stop
working properly

a treatment typically
given to patients who have
kidney failure, or end-stage
renal disease (ESRD),
Injuries and conditions like
high blood pressure, diabetes
and lupus, and kidney failure

A

Dialysis

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12
Q

How does Dialysis work?

A

w o r k s b y u sin g a dialy sis m a c hin e, in w hic h it r e m o v e s blo o d f r o m a n e e dle in y o u r a r m, cir c ula t e s t h e blo o d t h r o u g h t h e dialy z e r filt e r, w hic h m o v e s w a s t e in t o a dialy sis s olu tio n. T his cle a n sin g liq uid c o n t ain s w a t e r, salt and other additives, then it filters blood to your body through a different needle in your arm. It also monitors your blood pressure to adjust how fast blood flows in and out of your body

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13
Q

procedure where a dialysis
machine and a special filter called an artificial kidney,
or a dialyzer, are used to clean your blood.

A

Hemodialysis

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14
Q

a mixture between
two substances, one of which is
finely divided and dispersed in the
other. Common suspensions
include sand in water, dust in air,
and droplets of oil in air

A

suspension

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15
Q

type of mixture
intermediate between a
homogeneous mixture (also called
a solution) and a heterogeneous
mixture with properties also
intermediate between the two.

A

colloid

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16
Q

liquid materials
generally with a white to milky white
color, consisting of water and
synthetic resin particles that are
uniformly dispersed in the water

A

Emulsions

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17
Q

Suspension Examples

A

Muddy water
*Milk of magnesia
*Sand particles suspended in water

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18
Q

Colloids Examples

A

Aerosols: Solid or liquid mixed with gas;
Example: fog (liquid in gas)
*Sols: Solid mixed with liquid; Example: Paint
*Emulsion: Liquid with liquid; Example: oil and water
*Gel: liquid in solid; Example: Fruit jelly

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19
Q

What happens when a red blood cell is placed in hypotonic solution?

A
20
Q

When the cell presents with the same concentration on the inside and
outside with no shifting of fluids this is called?

A
21
Q

Which of the following membrane is used in the osmosis process?

A
22
Q

If a cell is placed in a hypertonic solution, water will move ___ the cell,
causing it to ___.

A
23
Q

Which of the following is true?

A
24
Q

Movement of water molecules from a solution with
a high concentration of water molecules to a
solution with a lower concentration of water
molecules, through a cell’s semi-permeable
membrane.

A

Osmosis

25
Q

The minimum pressure that must be applied to a
solution to halt the flow of solvent molecules
through a semipermeable membrane

A

Osmotic Pressure

26
Q

water treatment process that removes
contaminants from water by using pressure to
force water molecules through a semipermeable
membrane

A

Reverse Osmosis (RO)

27
Q

using a high pressure pump to increase the
pressure on the salt side of the RO and force the
water across the semi-permeable RO membrane,
leaving almost all (around 95% to 99%) of
dissolved salts behind in the reject stream.

A

How RO work

28
Q

represents the concentration of
solution when both the mass of the solute and
solution are provided. The following formula is
used to determine the ____

A

Mass
Percent

29
Q

A solution that has less
solute dissolved in the
solvent.

A

Dilute
Solution

30
Q

A solution that has more
solute dissolved in the
solvent.

A

Concentrated
Solution

31
Q

This is when a
solution which
contains more
solute than would
normally dissolve
at a certain
temperature

A

Supersaturated solution

32
Q

This is when one in
which more of the
solute would
dissolve at the
same temperature.

A

Unsaturated Solution

33
Q

This is when one in
which no more of
the solute will
dissolve at a
specific
temperature

A

Saturated Solution

34
Q

The measure of the amount of
solute dissolved to a given amount
of solvent.

A

CONCENTRATION

35
Q

It is referred to as the volume of the solute present in 100 mL
of solution

A

PERCENT BY VOLMUME

36
Q

The parts of a component per million of a solution used for
substances with a very low concentration in the solution.

A

PARTS PER MILLION

37
Q

It is the ratio of the solute particles to the solvent.

A

RATIO SOLUTION (DILUTION)

38
Q

refers to the number of gram molecules of solute present per one liter of solution. The
symbol for ______ is a capital _

A

MOLARITY, M

39
Q

A solution is prepared by dissolving 15 g of can sugar in 60 g of water.
Calculate the percent by mass of the solution.

A

12.19 g

40
Q

A 1.75-L bottle wine contains 560 mL of ethanol. What is the v/v percent
concentration of ethanol

A

16.7 % ethanol

41
Q

If 30.0 g calcium chloride, CaCl , is present in 0.5000 L of aqueous solution,
what is its concentration in terms of mass/volume percent?

A

6.7%

42
Q

Calculate the concentration in molarity of a 0.50 L solution containing
0.674 moles of sodium chloride.

A

1.35 M

43
Q

What is the molar concentration of a 655 mL canned beverage containing
0.75 mol of sucrose?

A

1.15 M

44
Q

The concentration of KI is 150 ppm in a solution with a mass of 7500 g.
How many grams of KL is present in the solution?

A

1.125 g KI

45
Q

What volume of 0.12 M HCl can be prepared from 11 mL of of a stock
solution of 0.45 M HCl?

A

41 mL

BIOCHEMISTRY (5 decks)

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