Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

zoology yawa > Cells at work > Flashcards

Cells at work Flashcards

1
Q

Fluid mosaic model

A
  1. maintain shape
  2. Coordinate changes thru attachment to the cytoskeleton and extracellular matrix
  3. Chemical messengers (signal transduction)
  4. Cell recognition (glycoproteins)
  5. Selective Permeability
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Diffusion w/o energy investment or movement of molecules to its own gradient.

A

Passive transport

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

Diffusion of molecules to
selective permeable membrane

A

Osmosis

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

The ability of surrounding solution to cause a cell to gain or lose water.

A

Tonicity

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

Low solute level

A

Hypotonic

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

Equal solute level

A

Isotonic

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

Higher solute level

A

Hypertonic

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

It means the control of water balance

A

Osmoregulation

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

A type of passive transport but uses proteins to move across a membrane.

A

Facilitated Diffusion

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

The very rapid diffusion of water into and out of certain cells

A

Aquaporin

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

The movement of ions or molecules across
a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

A

Active Transport

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

The energy needed for Active Transport

A

Adenosine Triphosphate (ATP)

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

It is the transfer of Phosphate

A

Phosphorylation

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

It refers to the release of energy. Most of the metabolism are this kind of reaction

A

Exergonic reaction

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

It requires a net input of energy and yield products that are rich in potential energy

A

Endergonic reaction

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

It is the use of energy released from exergonic reaction to drive endergonic reactions

A

Energy coupling

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

It refers to the energy barrier that must be overcome before a chermical reaction can begin

A

Activation Energy

18
Q

It binds to the active site and function in catalysis

A

Cofactors (nonprotein helpers)

19
Q

It reduces enzyme’s productivity by locking the substrate molecules

A

Competitive Inhibitor

20
Q

It does not enter the active site. Instead, it binds to the enzyme somewhere else called an allosteric site

A

Noncompetitive Inhibitor

21
Q

Model that describes the parental strand rejoins after replication

A

Conservative Model

22
Q

The model that describes that the parental DNA double helix is broken into segments that act as templates

A

Dispersive Model

23
Q

The model that describes that two parental DNA strands separate and each of those strands then serves as a template for the synthesis of a new DNA strand

A

Semi-conservative Model

24
Q

It refers to the “unzipping” of double stranded molecule done by DNA helicase (disrupts hydrogen bond).

A

Initiation

25
Q

The area that will become the template for replication

A

Replication Fork

26
Q

It holds the unpaired DNA strand

A

Single-stranded binding protein

27
Q

The process of creating new strand of DNA by adding nucleotides to template strands.

A

Elongation

28
Q

The main function of this is to duplicate the DNA content of a new cell during cell division

A

DNA Polymerase

29
Q

The process of ending transcription

A

DNA Termination

30
Q

The two types of RNA

A
  • Messenger RNA (mRNA)
  • Transfer RNA (tRNA)
31
Q

It contains the genetic message transcribed from the DNA

A

Messenger RNA (mRNA)

32
Q

It is the general term for the synthesis of any kind of RNA from DNA

A

Transcription

33
Q

A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth

A

Mitosis

34
Q

A type of cell division that produces four sex cells or gametes with half the number of chromosomes of the original cell.

A

Meosis

35
Q
  • Chromatin condenses: DNA coils up.
  • Centrioles move apart.
  • Microtubules form the spindle.
A

Prophase

36
Q
  • Nuclear membrane dissolves.
  • Proteins form Kinetochores on centromeres.
  • Fibers attach to Kinetochores.
  • Chromosomes move toward the center.
A

Prometaphase

37
Q
  • Spindle fibers align chromosomes.
  • Forms the metaphase plate (straight line).
  • Ensures proper chromosome separation.
  • Each daughter cell gets one copy.
A

Metaphase

38
Q
  • Chromatids separate at kinetochore.
  • Move to opposite ends.
  • Kinetochore action and polar microtubule interaction drive movement.
A

Anaphase

39
Q
  • Chromosomes reach opposite ends.
  • Chromosomes expand.
  • Formation of the nuclear membrane starts.
  • Spindle fibers disappear, and cytokinesis begins.
A

Telophase

40
Q
  • Separation of two daughter cells.
  • Actin protein forms a fiber ring in the center.
  • Pinches the cell, resulting in two diploid (46 chromosomes) daughter cells.
A

Cytokinesis

41
Q
  • Chromosomes match in homologous pairs.
  • Somatic cells have a species-specific chromosome count; e.g., humans have 46.
  • Composed of 23 pairs of homologous chromosomes.
  • These chromosome pairs may carry different versions of the same gene.
  • X and Y chromosomes are only partially homologous.
A

Meosis

zoology yawa (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions