Cells Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

active immunity

A

a form of immunity provided by the immune response of the body upon detection of a pathogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

active transport

A

the active movement of substances from a low concentration to a higher concentration (up their concentration gradient) with the use of energy in the form of ATP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

agglutination

A

the clumping together of cells or particles caused by antibodies which assists phagocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

antibody

A

a protein found in the blood that is produced by plasma cells which binds to antigens as part of the immune response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

antigens

A

marker molecules that can be detected by antibodies and trigger an immune response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

binary fission

A

the method of cell division used by prokaryotes involving replication of the circular DNA and plasmids followed by cytoplasmic division

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

cell cycle

A

the series of stages preparing the cell for division consisting of interphase and mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

cell-surface membrane

A

a phospholipid bilayer studded with proteins that surrounds cells and separates them from their environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

cell vacuole

A

a membrane bound structure found in plant cells that contains cell sap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

cell wall

A

a permeable layer that surrounds plant, algae, and fungi cells made of polysaccharides which provides strength to the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

chloroplast

A

an organelle found in plants and algae that is the site of photosynthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

clonal expansion

A

the production of many genetically identical daughter cells through cell division of the activated B or T lymphocyte after clonal selection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

clonal selection

A

the process of matching the antigens on an antigen presenting cells with the antigen receptors on B and T lymphocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

co-transport

A

a method of membrane transport where two substances are both transported across a membrane at the same time either in the same direction or opposite directions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

cytokinesis

A

division of the cytoplasm to produce two new cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

facilitated diffusion

A

the passive movement of substances from a high concentration to a lower concentration (down their concentration gradient) through transport proteins without the use of energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

flagella

A

a whip-like structure found on bacterial cells that is used for cell movement

18
Q

fluid-mosaic model

A

a model that descries membrane structure as a sea of mobile phospholipids studded with various proteins

19
Q

Golgi apparatus

A

an organelle found in eukaryotic cells that is involved in the modification and packaging of proteins

20
Q

helper T cell

A

a type of T cell in the immune system that stimulates cytotoxic T cells, B cells, and phagocytes

21
Q

herd immunity

A

a type of disease immunity that occurs when a large proportion of a population are vaccinated against a disease which prevents the spread of the disease to unvaccinated individuals

22
Q

HIV (human immunodeficiency virus)

A

a virus that attacks T cells in the immune system and can lead to AIDS (acquired immune deficiency syndrome)

23
Q

lysosomes

A

membrane-bound vesicles found in the cytoplasm that contain a hydrolytic enzyme called lysozyme

24
Q

magnification

A

how much bigger an image appears compared to the original object calculate using the following formula (image size = actual size x magnification)

25
Q

mitochondrion

A

an organelle found in eukaryotic cells that is the site of aerobic respiration

26
Q

mitosis

A

the part of the cell cycle in which a eukaryotic cell divides to produce two daughter cells, each with identical copies of DNA

27
Q

monoclonal antibodies

A

identical antibodies that have been produced by an immune cell that has been cloned from a parent cell

28
Q

nucleus

A

an organelle found in eukaryotic cells that stores the genetic information of the cell as chromosomes and is surrounded by a membrane called the nuclear envelope

29
Q

osmosis

A

the passive diffusion of water molecules from a region of high water potential to a region of lower water potential (down a water potential gradient) through a selectively permeable membrane without the use of energy

30
Q

passive immunity

A

a form of immunity provided by the introduction of antibodies to a disease into the body

31
Q

phaogcytosis

A

the process where phagocytes engulf and destroy material

32
Q

plasmids

A

a circular loop of DNA found in the cytoplasm of bacterial cells

33
Q

primary immune response

A

the response produced by the immune system when it encounters a pathogen for the first time

34
Q

resolution

A

the ability to distinguish two different points in a specimen

35
Q

ribosomes

A

organelles found either free in the cytoplasm or membrane bound that are involved in the synthesis of proteins

36
Q

rough endoplasmic reticulum (RER)

A

a membrane-bound organelle that is involved in the synthesis and packaging of proteins

37
Q

secondary immune response

A

the response produced by the immune system when it recognises a pathogen that it has encountered before

38
Q

simple diffusion

A

the passive spreading out of substances from a high concentration to a lower concentration (down their concentration gradient) without the use of energy

39
Q

smooth endoplasmic reticulum (SER)

A

a membrane-bound organelle involved in lipid synthesis

40
Q

vaccine

A

the introduction of dead or inactive pathogens to stimulate an immune response and provide long term immunity