Lab 1 Exam

Question 1

What are the three types of graphs?

Answer 1

Pie, Bar, and Line Graph

Question 2

What are the two axis on a line graph?

Answer 2

The X axis and Y axis

Question 3

What are the names for the three main microscopes?

Answer 3

Stereo Dissecting, Compound, and Electron Microscope

Question 4

Define Ocular for Microscope

Answer 4

Lens near the eye

Question 5

Define Body Tube for Microscope

Answer 5

Keeps ocular and objective at proper distance from each other.

Question 6

Define Nosepiece for Microscope

Answer 6

Permits interchange of low, medium, and high power objectives

Question 7

Define Arm for Microscope

Answer 7

Supports body tube and focus knob.

Question 8

Define Objectives for Microscope

Answer 8

Contain lenses of various magnification

Question 9

Define Coarse Focus Knob for Microscope

Answer 9

Moves the stage for focusing.

Question 10

Define Fine Focus Knob for Microscope

Answer 10

Moves stage in smaller increments to permit exact focus.

Question 11

Define Base for Microscope

Answer 11

Bears the weight of the microscope and its components.

Question 12

Define Mechanical Stage for Microscope

Answer 12

Holds slides and allows controlled movement of the slides.

Question 13

Define Iris Diaphragm for Microscope

Answer 13

Regulates amount of light illuminating the specimen.

Question 14

Define Illuminator for Microscope

Answer 14

Provides light source

Question 15

Definition of Meniscus

Answer 15

The curved upper surface of a liquid in a tube.

Question 16

What is a taxonomic key?

Answer 16

A method used to classify and identify objects and organisms.

Question 17

Define Atom

Answer 17

Smallest part of an element.

Question 18

Define Molecule:

Answer 18

More than one atom chemically bounded together.

Question 19

Define Element

Answer 19

Pure substance that can not be broken into simpler parts.

Question 20

Define Isomer

Answer 20

Two or more compounds with the same formula but a different arrangement of atoms in the molecule.

Question 21

Define Marcomolecule

Answer 21

A molecule containing a very large number of atoms, such as a protein or nucleic acid.

Question 22

Define Acid

Answer 22

Releases hydrogen ions. 0-6

Question 23

Define Base

Answer 23

Releases hydroxide ions. 8-14

Question 24

What did the balls, holes, sticks, and springs represent from the chem kit?

Answer 24

Balls: Atoms

Holes: Bond Sites

Sticks: Single Bonds

Springs: Double Bonds

Question 25

Define Prokaryotic

Answer 25

A single-celled organism which has no nucleus, with a membrane.

Question 26

Define Eukaryotic

Answer 26

A cell that has a nucleus surrounded by a membrane.

Question 27

Whats the difference between autotrophic and heterotrophic?

Answer 27

Autotrophic can make their own food and Heterotrophic cant make their own food.

Question 28

How temperature and size of molecule effect the speed of diffusion?

Answer 28

temperature goes up, the molecules move faster , the speed

if the molecules are large, then they can be bigger than the pores that they are supposed to diffuse through, and that means that they won’t be able to diffuse at all, or at the very least, the speed will become much slower.

Question 29

Selectively permeable

Answer 29

A biological membrane that will allow certain molecules or ions to pass through it by diffusion.

Question 30

Products that result from the breakdown of hydrogen peroxide

Answer 30

Hydrogen and oxygen gas

Question 31

Enzymes

Answer 31

Bio catalysts, sometimes proteins, speeding up chemical reactions

Question 32

Define Brownian Movement

Answer 32

The random movement of particles suspended in a liquid of gas.

Question 33

Define Colloidal suspension

Answer 33

It is a system composed of large molecules suspended into a liquid medium.

Question 34

What part of the cell is a colloidal suspension?

Answer 34

The cytoplasm is a colloidal suspension.

Question 35

Define Flaccid Cell

Answer 35

Weak; soft; not very sturdy.

Question 36

Define Catalyst

Answer 36

A substance that speeds up a chemical reaction without changing itself.

Question 37

Define Substrate

Answer 37

A molecule entering in an enzyme influenced reaction.

Question 38

How do enzymes work?

Answer 38

Are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction.

Question 39

Define Turgid Cell

Answer 39

Turgidity, is caused by the osmotic flow of water from an area of low solute concentration outside the cell.

Question 40

Define Plasmolysis

Answer 40

Contraction of the protoplast of a plant cell as a result of loss of water from the cell.

Question 41

Define Osmosis

Answer 41

Molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

Question 42

Define Diffusion

Answer 42

The movement of molecules from an area of high to low concentration.