quizizz unit 1 and study guide

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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

part 11

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


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