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Flashcards in Volume 3 Deck (392)
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1

The common measurements used in microscopy are

micrometer and nanometer.

2

Which statement best describes simple and compound microscopes?

Simple microscopes contain a single lens; compound microscopes contain a group of diverse lenses.

3

Which term is described as “light whose rays have been bent out of their original course by passing through a transparent membrane”?

Refracted.

4

All of the following are examples of basic lens shapes except:
flat.
convex.
concave.
compound.

compound

5

The resolving power of microscope lenses is its ability to

distinguish fine details and structures.

6

The magnification system of a microscope includes

objectives and eyepieces.

7

What component concentrates, directs, and focuses the path of light onto the object under examination?

Condenser.

8

What is the total magnification of an object when the objective power is 20 X and the eyepiece power is 10 X?

200 X.

9

Markers (grids, scales, etc.) used for measuring objects are placed on the

eyepiece diaphragm.

10

To enhance light absorption and contrast of objects in brightfield microscopy,

stain the objects.

11

Which step is incorrect when using an oil objective?

Pass a dry objective through the oil.

12

Which microscopic method is useful in examining unstained microorganisms suspended in fluid?

Darkfield.

13

The detailed examination of internal structures in living cells and microorganisms as they move and change shape can be accomplished by using

phase-contrast microscopy.

14

Which microscopic method allows the study of fine details and ultra structures and what is its principle?

Electron microscopy; use of electron beams.

15

Which human body requirement is critical because most of the chemical activities take place in this medium?

water

16

All of the following are activities of metabolism except
a. nutrition.
b. synthesis.
c. cellular respiration.
d. internal temperature.

internal temperature.

17

The automatic tendency of the human body to maintain a relative constant internal environment is known as

homeostasis.

18

When discussing the various levels of organization of the human body, atoms of hydrogen and oxygen combining to form water best illustrates the

chemical level.

19

A coordinated group of tissues and organs proceed to make

a body system.

20

Which body system transports materials from one area of the body to another and helps defend the body against disease?

Circulatory.

21

Statement that best describes the homeostasis function of the endocrine system?

Regulates metabolic activities and blood levels of various substances.

22

The purpose of the ureters is to

transport urine produced in the kidneys to the bladder for storage.

23

As the urinary bladder begins to fill, the muscular wall

becomes thinner.

24

The tube-like structure that drains urine from the bladder and conveys it to the outside of the body is the

urethra.

25

What are the two main regions within the kidney covering, and where are they positioned?

Medulla - inner region; cortex - outermost region.

26

The basic functional unit of the kidney is the

nephron.

27

The combination of the glomerulus and Bowman’s capsule is often called a

renal corpuscle.

28

Kidney tubules are divided into three sections: the proximal and distal convoluted tubules, and the

loop of Henle.

29

The kidney receives its blood supply from the

renal artery.

30

Nephrons can generally be subdivided into two fluid circuits that are known as the

blood and the filtrate (urine) circuits