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Life Science > Exam > Flashcards

Exam Flashcards

1
Q

Scientific Method

A

A scientific way to solve problems or answer questions

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2
Q

What is Step 1 of the Scientific Method?

A

Ask a question

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3
Q

What is Step 2 of the Scientific Method?

A

Form a hypothesis

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4
Q

What is Step 3 of the Scientific Method?

A

Conduct an experiment

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5
Q

What is Step 4 of the Scientific Method?

A

Analyze the data

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6
Q

What is Step 5 of the Scientific Method?

A

Draw a conclusion

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7
Q

What is Step 6 of the Scientific Method?

A

Communicate your results

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8
Q

What is a cell

A

The smallest unit that can perform all the processes necessary for life

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9
Q

Who made the cell theory

A

Robert Hooke in 1665

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10
Q

What are the three parts to the cell theory

A

All organisms are made of one or more cells
The cell is the basic unit of all living things
All cells come from existing cells

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11
Q

Why are most cells small?

A

Because food and waste must pass through the cell surface

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12
Q

How do you do surface area to volume ratio?

A

Surface area divided by volume

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13
Q

What is a lens?

A

A piece of curved glass or other clear material that brings light rays together or spread them apart

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14
Q

Magnify

A

To enlarge

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15
Q

Compound microscope

A

Light illuminated, 2-D, high magnification, low resolution, and you can see individual individual cells

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16
Q

Resolution

A

The amount of detail so you can see

17
Q

Dissection microscope

A

Used for dissection, light illuminated, 3-D, unable to view individual cells due to low magnification

18
Q

Scanning electron microscope (SEM)

A

Uses electron illumination, 3-D, high magnification, high resolution, black-and-white, and is coated in gold two electrons pounds off to give an exterior view

19
Q

Transmission electron microscope (TEM)

A

Uses electron illumination, today, I can magnification, high resolution, and electron beams pass through thin slices of specimens

20
Q

What are the three different objectives in a microscope

A

4x, 10x, 40x

You multiply it with the ocular lens(10x) to get overall objective

21
Q

What are the levels of organization in organisms

A

Cells tissues organs organ systems in organisms

22
Q

What are the human body systems?

A

The circulatory, respiratory, muscular, skeletal, nervous, digestive, and excretory system

Life Science (3 decks)

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