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Flashcards in Chapter 3 Deck (112)
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2

Ribosomes are comprised of RNA that has been synthesized directly by the what?

Nucleolus

3

Hydrostatic refers to the pressure of the what?

The solvent

4

The process in which a single cell can produce daughter cells that are different from each other?

Differentiation

5

Movement of particles from higher to lower concentrations through a membrane, such as in dialysis, occurs by what?

Diffusion (filtration uses either gravity or pressure)

6

What functions as a sac-like or tubular network of structures that provides transport?

Endoplasmic reticulum

7

Cells use up to 40% of their daily energy expenditure engaged in what important process?

Active transport (Active transport requires a lot of ATP)

8

Normal isotonic sodium chloride solution is __%.

0.9%

9

The type of proteins that guide cells on the move in the bloodstream to their destination ar a wound site are called what?

Cell adhesion molecules (cell adhesion molecules stop cells that are moving)

10

The golgi apparatus is involved in doing what to the cell membrane?

Modifying it, but not producing it.

11

During hyperplasia, cells are dividing at a rapid rate and may progress toward what kind of state?

Cancerous

12

The following are inclusions except which one? Glycogen, melanin, lipids, vesicles.

Vesicles

13

Chromatin is the term for the loosley coiled appearance of WHAT in a non-dividing cell?

DNA

14

True or false: The cell membrane is made up of a phospholipid monolayer?

False (It is made up of a phospholibit BILAYER)

15

Molecules soluable in WHAT can pass through the fatty acid portion of the cell membrane unassisted?

Lipids (like dissolves like)

16

Particles that are dissolved in a media are refered to as the what?

The solvent

17

Areas of tubular channels that interconnect cardiac muscles as well as muscle in the digestive tract are called what?

Gap junctions

18

The process called what explains how embryonic cells become specialized and diverse?

Differentiation

19

The phase of mitosis when the chromosomes align at the equator is called what?

Metaphase

20

The movement of particles from higher to lower concentration is termed what?

Diffusion

21

The protein ACTIN, which results in some type of movement or contraction, is found where?

In the microfilaments. (Cilia cause movements but do not contain actin.)

22

What is the source of most of the cell's energy?

The mitochondrion

23

Which chemicals on the surface of cells function to attach to and recognize hormones?

Proteins

24

During differentiation, certain genes are what while others are activated?

Repressed

25

A transmission electron microscope can magnify a cell how many times?

1 million

26

Which organelle consists of microtubules and functions both in distributing chromosomes during cell division and in forming portions of cilia and flagella?

Centrosomes

27

In what stage of mitosis do the centromeres and chromosomes pull apart and begin migration towards the poles?

Anaphase

28

Hypertonic solutions tend to cause cells to do what?

Shrink (Cells will lose water and shrink in a hypertonic media because of the high osmotic pressure)

29

Anabolism, catabolism, and cellular respiration are all individual parts of what?

Metabolism

30

In receptor-mediated endocytosis, an LDL particle of cholesterol is attracted to cells that contain what?

Apoprotein-B receptors

31

What does catalase convert into oxygen and water, rendering it harmless?

Hydrogen peroxide