Bio 114 final exam (Answered) 106 Questions
and Correct Answers With Complete Solution.
Latest Updated 2024/2025.
When biologists wish to study the VERY small internal organelles in cells, they most likely would use a
transmission electronic microscope.
A general, unifying explanation of observations is a
Hypothesis
When biologists wish to see just the cell membrane & possibly the nucleus in a cell, they most likely
would use a
light microscope
how do you calculate the total magnification of an image?
multiply the objective power times the ocular power
the ocular power is always
10
True or False: The Course Adjustment is NEVER used while viewing a specimen under high power
true
true or false: transmission electron microscopes can view living organisms
False
as the magnification increases
the resolution decreases
all living things are composed of
1 or more cells
the Process by which an individual keeps internal conditions within tolerable ranges.
Homeostatis
True and False-Both Asexual & Sexual Reproduction transmit genetic information from 1 generation to
the next
True
The Characteristics of Life include:
, Organization, Energy & Metabolism to Maintain Homeostasis, Growth & Development, Adaptation,
Response to stimuli, Movement, Reproduction
The sugar in a glass of Kool Aid is the Solute. The water is the Solvent. The Kool Aid is the Solution.
Give examples of Solute, Solvent, and Solution with an example such as Kool Aid
what happens if a large cell has too much volume for surface area
waste will build up and it won't be able to exit the cell in time, also nutrition can't get to the entire cell in
time
The plasma membrane of a cell is
fluid and semi-permeable
Enzymes speed up chemical reactions by
lowering the activation energy
true or false-enzymes They are specific to their substrate & are not consumed (used up)
true
The tails of phospholipids are__________. Which way to they face? Why?
hydrophobic-heads face on the outside they have to be protected from the water outside the cell &
inside the cell
the heads are______
hydrophilic (water)
diffusion is a
a passive process in which molecules move from a region of higher concentration to a region of lower
concentration
Does diffusion require energy? why?
No- passive transport because it's moving down the concentration gradient.
how long does diffusion go on
until equilibrium is reached BUT THE PARTICLES KEEP MOVING there's just no net change
Does osmosis require energy?
No-Passive transport
Hypotonic means
there is more solute inside the cell than outside. They have more water molecules tied up with solute
inside the cell than out. There are more free water molecules outside the cell than inside. The water
wants to move into the cell
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