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Bio > Bio test 3 > Flashcards

Bio test 3 Flashcards

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Biology 101 flashcards
1
Q

`Cells

A

The basic units of living things

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2
Q

Cell membrane

A

All cells are surrounded by a thin flexible barrier

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3
Q

Nucleus

A

Center of the cell contains dna

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4
Q

Eukaryotes

A

nucleus , DNA in chromosomes ( linear), many organelles , plants and animals , cell membrane

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5
Q

Prokaryotes

A

no nucleus, single loop of DNA, few organelle’s , bacteria, cell wall and membrane

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6
Q

Cytoplasm

A

liquid portion inside the cell that contains dissolved molecules

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7
Q

Organelles

A

TINY ORGANS

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8
Q

Ribosomes

A

read the genetic code to assemble the protein

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9
Q

Golgi apparatus ( Golgi body )

A

Packaging plant
receive protein and re pack it and ships off the cell

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10
Q

Chloroplast

A

found only in plants
sight of photosynthesis

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11
Q

Mitochondria

A

Powerhouse of the cell

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12
Q

Lysosomes

A

contain digestive enzymes in the cell
destroy / digest things that we don’t want in the cell

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13
Q

Vacuole

A

store water
receive store and release

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14
Q

Diffusion

A

The process by which particles move from an area of higher concentrations to a area of lower concentration

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15
Q

Cell wall

A

A strong supporting layer around the membrane ( sturdy because of cellulose )

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16
Q

Lipid bilayer

A

Gives cell membranes a flexible structure

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17
Q

Selectively permeable

A

Some substances can pass across cell membranes and others can not

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18
Q

Aquaporins

A

When cells contain water channel protiens

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19
Q

Osmosis

A

movement of water in the cell

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20
Q

Isotonic

A

the water in and out of the cell in even

21
Q

Hypertonic

A

higher water in the cell

22
Q

Hypotonic

A

higher water outside the cell

23
Q

Organ

A

When many groups of tissues work together

24
Q

Organ system

A

A Group of organs that work together to perform a specific function

25
Q

Receptor

A

signals a cell
must have a rescopotry that the signaling molecule can bind to

26
Q

What do macromolecules make up

A

Cell membrane

27
Q

What is a glycolipid

A

Lipids with carbohydrates attached

28
Q

What is a glycoprotein

A

Protein and carbohydrate

29
Q

Why is cholesterol needed

A

To make sure the cells are the right about of flexible

30
Q

Concentration gradient

A

The amount of molecules that are in or out of the cell

31
Q

What is passive transport

A

No energy needed to move things with there concentration gradient

32
Q

simple diffuson

A

moving gasses straight across the cell membrane
(passive transport)

33
Q

faccilitated

A

need helped to move across( active transport)

34
Q

active tranport

A

requires apt
moving against gradient

35
Q

dynamic equilibrium

A

moving things in and out of the cell to stay balanced to maintain homeostasis

36
Q

why are cells so small

A

because we have to be able to move things in and out really fast

37
Q

what do prokaryotes and eukaryotes both have

A

DNA
cell membrane
RIBOSOMES
CYTOPLAMS

38
Q

name the types of vesicoles

A

secretory vesicle - secret it
storage - store proteins
lysosome - destroy things

39
Q

centrioles

A

needed for cell division

40
Q

central vacuole

A

largest thing in the plant cell

41
Q

what do plants rely on the give them structure

A

tugger pressure

42
Q

what 3 things are only found in plants

A

cell wall , chloroplast , central vacuole

43
Q

what shape are plant cells typically

A

square / rectangle

44
Q

endocytosis

A

moving things in the cell

45
Q

Nucleuses

A

Center of the cell
Contains dna

46
Q

How can the dna get out of the cell

A

It has little pores

47
Q

Rough er

A

Has Ribosomes
Make Protiens

48
Q

Smooth er

A

Makes LIpids and carbs
Lacks ribosomes

49
Q

Er

A

Transport system in the cell

Bio (5 decks)

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