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Biotechnology > Unit 1: Introduction to Biotechnology & Lab Safety > Flashcards

Unit 1: Introduction to Biotechnology & Lab Safety Flashcards

1
Q

How many grams is a deka gram?

A

10

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2
Q

How many grams is a hectogram?

A

100 (10^2)

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3
Q

How many grams is a kilogram?

A

1,000 (10^3)

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4
Q

How many grams is a megagram?

A

1,000,000 (10^6)

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5
Q

How many grams is a gigagram?

A

1,000,000,000 (10^9)

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6
Q

How many grams is a decigram?

A

0.1 (10^-1)

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7
Q

How many grams is a centigram?

A

0.01 (10^-2)

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8
Q

How many grams is a milligram?

A

0.001 (10^-3)

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9
Q

How many grams is a microgram?

A

0.000001 (10^-6)

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10
Q

How many grams is a nanogram?

A

0.000000001 (10^-9)

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11
Q

What is the ocular lens of a microscope?

A

also known as eyepiece
where you put your eye
magnifies the image produced by the objective lens so that the human eye can see it

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12
Q

What is the arm of a microscope?

A

piece that connects the base of the microscope to the body tube

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13
Q

What is the rack stop of a microscope?

A

physically blocks the user from moving the stage too close to the objective lens and damaging it

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14
Q

What are the stage clips of a microscope?

A

clips that hold the slide being observed in place

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15
Q

What is the course focus of a microscope?

A

big dial
moves the stage up and down to bring what is being studied to near focus quickly

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16
Q

What is the fine focus of a microscope?

A

smaller dial
fine tunes the focus achieved by the course focus, sharpens the image

17
Q

What is the nose piece of a microscope?

A

holds the objective lenses and can be rotated to change in between the lenses

18
Q

What is the objective lens of a microscope?

A

directly observes the object being studied and magnifies it for the user
On lab microscopes, there is a 4x, 10x, 40x, and 100x

19
Q

What is the stage of a microscope?

A

where the slide being studied is placed to be magnified and observed

20
Q

What is the condenser of a microscope?

A

focuses light on the specimen to sharpen the image

21
Q

What is the illuminator of a microscope?

A

produces high intensity light to be shined upwards through the slide

22
Q

What is the purpose of a stain?

A

makes a transparent sample easier to observe by making it visually more distinct from its background

23
Q

What is a dissecting microscope?

A

used to view large 3D objects
up to 40x magnification

24
Q

What is a compound light microscope

A

used for very small thin things
magnification up to 1000x

25
Q

What is an electron microscope?

A

uses scanning or transmission electron microscopy to view the interior of a cell
shows very fine detail

26
Q

What two scientists were instrumental in the invention and development of microscopes?

A

robert hooke - made first microscope
anton van leeuwenhoek - created field of microbiology

Biotechnology (3 decks)

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