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Biology > Lesson 1.7 > Flashcards

Lesson 1.7 Flashcards

1
Q

According to this model, membrane consist of lipid by layer and globular Proteins which are in bedded within the lipid bilayer

A

Fluid mosaic Model by S. Singer and G. nicolson

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2
Q

Has a hydrophobic and hydrophilic regions

A

Lipid bilayer

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3
Q

Proteins also known as

A

Glycoproteins

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4
Q

Lipids also known as

A

Glycolipids

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5
Q

The movement of substances through membranes without using energy

A

Passive transport

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6
Q

Three kinds of passive transport

A

Simple diffusion
Osmosis
Facilitated Diffusion

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7
Q

Is the movement of substances from a region of higher concentration to a region of lower concentration

A

Simple diffusion

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8
Q

Is a difference in concentration of a certain substance in one hour and the concentration in another Adjacent area

A

Concentration gradient

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9
Q

Factors that affect diffusion across the semi permeable membrane

A

Size

Charge of particles

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10
Q

Small non-polar molecules That can go in and out freely

A

H2O, 02, CO2, fatty acid‘s

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11
Q

Large molecules like, cannot go in and out freely

A

Proteins and carbohydrates

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12
Q

Ios such as, cannot pass through readily because of the presence of hydrophobic region

A

OH, K+, Ca+++

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13
Q

The diffusion of water across a selectively Premable membrane

A

Osmosis

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14
Q

Moves down it’s concentration gradient

A

Water

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15
Q

Three teams that are used to indicate the differences between two solutions

A

Isotonic, hypertonic and hypotonic

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16
Q

Comes from the Latin root meaning Strength

A

Suffix tonic

17
Q

Refers to the concentration of solutes in the solutions

A

Tonicity and strength

18
Q

The concentration of solutes Surrounding this so equals the concentration of solute inside the cell

A

Isotonic solution

19
Q

The concentration of solute surrounding the cell is higher than that inside the cell

A

Hypertonic solution

20
Q

If the cells loses too much water, the cell will shrink

A

Plasmolysis (or crenation in the case of animal cell)

21
Q

The concentration of solutes surrounding this song is lower that that inside the cell

A

Hypotonic solution

22
Q

place in solution of different sugar concentration

A

Red blood cells or RBC

23
Q
  • Rbc an external solution or the same concentration
  • water entering the RBC = water leaving
  • what happens? No changes in RBC sizes
A

Isotonic

24
Q
  • rbc are place in a very concentrated sugar solution
  • RBC are filute compred to external solution and lose water
  • waht happens? RBC Shrink
A

HYPERTONIC

25
Q
  • RBC are place in dilute sugar solution
  • RBC take up water
  • What happens? RBC swell and finally burst
A

Hypotonic

26
Q

It is a form of passive transport that requires transport proteins in the membrane

A

Facilitated diffusion

27
Q

Is an example of large polar molecule that is transported through the membrane by facilitated diffusion

A

Glucose

28
Q

Bind to specific salute to be transported and cause changes in the shape of protein

A

Carrier proteins

29
Q

Not bind the solute

A

Channel proteins

30
Q

Is the movement of substances from the region of lower concentration to a region of greater concentration in the choirs expenditure cellular energy

A

Active transport

31
Q

It is one of the well studied examples of active transport

A

Sodium potassium pump

32
Q

Two types of movement across cell membrane

A

Endocytosis

Exocytosis

33
Q

The cell engulfs particles into a pouch formed bu the in folding of the cell membrane

A

Endocytosis

34
Q

Three types of endocytosis

A

Phagocytosis

Pinocytosis

35
Q

Cell eating, the cell engulfs solid particles into much larger vesicles, sometimes called VACUOLES

A

Phagocytosis

36
Q

In human, two types of white blood cells specialized in phagocytosis

A

Neutrophils

Manocytes

37
Q

cell drinking, it is similar to phagocytosis except that the cell engulfs droplets of fluid instead of solid particles, also forming latge vacuoles within it.

A

Pinocytosis

38
Q

It is the reverse of endocytosis

A

Exocytosis

Biology (5 decks)

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