quizizz unit 1 and study guide
The low power objective of a microscope has a magnification of 50x and the high power has a magnification of 150x. If the diameter of the low power field of view measures 1,200 micrometers, what will the diameter of the high power field of view measure?
400 micrometers
why do we start out using scanning and low power? What advantages do these objectives have over high power?
It has the highest field of view that way you can locate the object easier.
Fire is living because it has 6 of the 8 characteristics of life.
false
part 13
fine adjustment knob
For single-celled organisms, _____ is mostly an increase in size.
growth
g
growth
During an experiment, if you purposely change the temperature to test a hypothesis, the temp is called the
independent variable
why do organisms move in and out of focus under high power (400x)?
it is more zoomed in and hard to focus
a
adapt to the environment
What is the field of view?
Entire area of the road + surrounding distance
c
cells
the factor observed/measured for change during the experiment
dependent variable
Multicellular organisms go through a process called __________, where cells divide and differentiate into different kinds of cells.
development
Regulates the amount of light on the specimen
diaphragm
part 7
diaphragm
how do you measure field of view
divide field number by magnification
Under what power/magnification do organisms appear the largest? Why?
high power because it is the closest and most in depth view of the organism
Maintaining a stable internal environment is called
homeostasis
This is your prediction about how the Dependent Variable in an experiment will respond to changes in the Independent Variable.
hypothesis
o
organization
Homeostasis
process by which organisms maintain a relatively stable internal environment
Using one or more of your 5 senses to gather information is called
qualitative observing
Observations that deal with a number or amount are called
quantitative observation
what objective should be used to first find an image
scanning (low)
Under what power/magnification are you able to observe the most organisms? Why?
scanning because it has the highest field of view
A series of steps scientists follow to solve problems is the
scientific method
Why is it important to be able to reproduce the results of an experiment?
shows if the result is true and has enough evidence behind it to back it up
Mr. Krabbs is trying a new money making scheme. On Tuesdays he is selling his crabby patties on multicolored buns. He usually averages 25 customers per day. On Tuesdays he now averages 27 customers. What was the dependent variable
the number of customers
how do you estimate the size of an object under the microscope?
using millimeters
independent variable
variable that is manipulated
What axis is the independent variable on?
x-axis
On what axis is the dependent variable graphed?
y-axis
first D
DNA
a cat is an organism that has a respiratory system that contains lungs and a trachea?
All living things display organization
a controlled experiment
An experiment where a single variable is isolated and tested
Which is NOT a characteristic that all living organisms share?
ability to dominate an ecosystem
e
energy
r
respond to environment
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stage clips
dependent variable
The measurable effect, outcome, or response in which the research is interested.
An adult hydra is producing its offspring through budding.
all living things reproduce
first r
reproduce
An explanation that ties together many hypotheses and explanations is called a(n)
theory
If you wanted to center the image what direction would you move your slide in?
up and right
how do you convert from millimeter to microns?
1 millimeter= 1000 microns (multiply the length value by 1000)
theory
A hypothesis that has been tested with a significant amount of data
hypothesis
an educated statement
part 10
arm
Over many hundreds of years, a population of rabbits living in the woods adapts to its surrounding with brown fur.
all living things adapt to their environment
a camel has eyelashes that work to keep the dust and sand out of it's eyes
all living things adapt to their environment
A cat is an organism that has a respiratory system that contains lungs and a trachea.
all living things display organization
When you step out into the cold, your body shivers in order to keep its temperature at 98.6F.
all living things maintain homeostasis
A pill bug (roly poly) eats a carrot.
all living things use energy
Green plants produce their own food in a process called photosynthesis
all living things use energy
Living things are based on a universal genetic code. What molecule is responsible for that code?
cells
living things are made up of
cells
living things are made up of units called
cells
Dog racer
characteristics of life
when should you never use the coarse adjustment knob?
close up to the slide
part 12
coarse adjustment knob
this moves the specimen up or down to adjust the slide containing specimen
coarse adjustment knob
The summary at the end of an experiment that explains the results.
conclusion
Infrence
conclusions based on observation
synonym for controlled variable
constant
The standard to which you compare the results of an experiment is called
control group
the standard to which you compare the results of an experiment is called
control group
Examples of living organisms
me, mule, moss, mushroom, the sun
what unit do we use to measure the length when making observations through a microscope?
micron (um)
observation vs. infrerence
observation is the process of gathering info about events or processes in a careful, orderly process. Inferences are a logical interpretation based on prior knowledge or experience
How do you determine total magnification?
ocular lens x objective lens
synonym for dependent variable
responding variable or d for data
how does the movement of the stage compare to the movement of the image?
the stage is moving up and down and the image is moving left and right but can't go up or down
