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lab test

Terms in this set (43)

In an electrically neutral atom, the number of ____ and _____ are always equal.
protons and electrons
Atoms _____ are isotopes of the same element
x and Z (Same number of protons but different number in neutrons)
The center of the atom is the:
Nucleus
The ______number of an element gives the number of protons and electrons in the atom while the _______number gives the total number of protons and neutrons.
Atomic and mass
Which of the following is not an subatomic particle?
ION
An aluminum isotope consists of the following subatomic particles in the table above. Its mass number is:
27
A covalent bond is:
a pair of electrons being shared between atoms
K—Cl is a(n)____ bond.
IONIC
The yeast in the lab produced
ethyl alcohol and carbon dioxide is produced from the sugar in the molasses.
The variable in the experiment with the yeast in the fermentation tube was
Temperature of the system
The use of the senses (touch, taste, sight, and sound) make ____ observations.
Quantitative
Data such as "10 grams" is referred to as ___________.
quantitative data
Referring to the graph of temperature and heart rate, of zebra fish is what type of relationship?
direct (as the temperature increases, the heart rate increases)
Osmosis is a special case of
diffusion
If a cell is placed in a hypotonic solution, which will occur?
Water will move into the cell from the surrounding solution.
Which type of solution has a higher percentage of solute than that of the cell?
hypertonic solution
The solution causes the lamp to glow, then what type of solute is present in the solution?
Electrolyte
Oxygen enters the blood from the alveoli in the lungs by the process of:
diffusion
The movement of water across a selectively permeable membrane is called
osmosis
When put in an isotonic environment, an animal cell will
shrink.
Diffusion occurs because:
molecules constantly move and collide with each other.
The movement of molecules from an area of higher concentration to an area of lower concentration is called _____.
diffusion
positive starch
dark blue/purple
If the two chemicals were placed on the agar at the same time, why has the potassium permanganate diameter greater than the methylene blue?
Lighter molecules move faster than heavier molecules at the same temperature.
What is the term for a substance that provides ions when dissolved in water?
An electrolyte
smooth ER
package of protein
Ribosome
site of protein systhesis
Nucleus
contains DNA
Centrioles
Lipid synthesis/metabolism
Mitochondria;
Production of ATP
Choloroplast
site of photosythesis
Lysosomes;
digests/recycles cell parts
Vacuole;
store wastes, water
Rough ER
store/transport proteins
Golgi
cilia/flagella movement
penicillin
huge chunk blue, pink, purple
mixed protoza
lines and spots
bacterial
dots purple and blue
rhizopus
looks like red sperms
anabaema
dots
Single bond
H2
HCl
HOCl
H2O
NH3
CH4
C2H6
Double bond
O2
CO2
C2H4
H2CO
Triple bond
N2
C2H2
HCN
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