Brainscape's Knowledge GenomeTM

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


See full index

8B science > Unit 2-Cells > Flashcards

Unit 2-Cells Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Cell

A

The smallest unit that can perform the functions of life.

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

Nucleus-

A

In a cell, the organelle that controls all the cells activities.

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

Cell wall-

A

A rigid structure surrounding the cell membrane of plants, fungi, and some unicellular organisms;supports and protects the cell.

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

Cell membrane-

A

The selectively permeable structure enclosing the contents of the cell or organelle. Controls what enters and leaves the cell.

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

Cytoplasm-

A

The gel-like substance within the cell membrane that contains and supports the structures of the cell.

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

Vacuole-

A

In a cell, the fluid filled organelle that stores water, food, wastes, and other materials.

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

Chloroplast-

A

An organelle that is only in green plants an some unicellular organisms; Allows photosynthesis to take place; Contains the pigment chlorophyll.

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

Mitochondria-

A

Only in animal and plant cells; Makes energy for the cell. Cellular respiration takes place here.

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

Chlorophyll-

A

Responsible for the absorption of light to provide energy for photosynthesis.(Green Pigment)

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

Unicellular-

A

A single cell.

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

Multicellular-

A

Having many cells.

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

Wet mount-

A

A type of sample preparation using a microscope slide, a coverslip, and water.

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

Electron Microscope-

A

Can magnify objects up to 2000000x.

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

Field of view-

A

The area seen through the eyepiece of a microscope or other optical instruments.

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

Magnification-

A

The amount of enlargement produced by a microscope or similar magnifying instrument.

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

Eyepiece-

A

The lens that works as a magnifying glass to enlarge the image.

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

Tube-

A

Holds the eyepiece and the objective lens.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Rotating Nose-Piece-

A

Rotating disk holding two or more objective lenses. Turns and clicks into place to change lens.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Objective lens-

A

The three convex lenses in a microscope. Ex:40x, 10x, 40x, and 100x.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Stage-

A

Supports the microscope slide.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Diaphragm-

A

Controls the amount of light reaching the object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Condenser Lens-

A

Directs light to the object being viewed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Arm-

A

Connects the base and the tube. Used to carry the microscope.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Fine-Adjustment-

A

Focuses the medium and high power magnification.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Coarse-Adjustment-

A

Moves the tube or stage up or down to bring the object into focus. Only for low-power magnification.

26
Q

How to calculate total magnification-

A

Ocular lens x objective lens=total magnification.

27
Q

How do you calculate field of view?

A

Low Power fov x m of low power o.l divided by m of medium power o.l.

28
Q

The five characteristics of a living thing are…

A
  • Grow
  • Need energy
  • Respond and adapt to the environment
  • Reproduce
  • Produce wastes
29
Q

What is cell theory?

A
  • All things are composed of one or more cells.
  • Cells are the basic units of structure and function in organisms.
  • Living things come only from other living things.
30
Q

To stay alive, three functions of a cell are…

A
  • Making Products.
  • Obtaining materials and supplies of energy.
  • Getting rid of waste.
31
Q

Animal cells are usually______and______than plant cells.

A

Round

Smaller

32
Q

Plant cells are usually______and have a______and_______that plant cells don’t have.

A

Rectangular
Chloroplast
Cell wall

33
Q

Tissue-

A

A group of cells having the same function and structure.

34
Q

Muscle-

A

Move body parts.

35
Q

Nerve-

A

Carries signals from one part of the body to another.

36
Q

Connective-

A

Attach muscle to bone, holds shape.

37
Q

What is the levels of organization?

A

Organism-System-Organ-Tissue-Cell

38
Q

Systems are made out of_______.

A

Organs

39
Q

Root system-

A

Obtains water and minerals.

40
Q

Shoot system-

A

Makes food

41
Q

Abiotic-

A

Not living

42
Q

Biotic-

A

Not living.

43
Q

Who saw tiny box structures and called them cellulae?

A

Robert hooke.

44
Q

Permeable membrane-

A

Allows all materials to pass through.

45
Q

Selectively permeable membrane-

A

Allows specific materials to pass through.

46
Q

Diffusion-

A

The movement of particles in liquids and gases from an area of higher concentration to an area of low concentration.

47
Q

Osmosis-

A

The diffusion of a solvent, usually water, through a selectively permeable membrane

48
Q

Root hairs-

A

An extension of a single epidermal cell.

49
Q

Xylem tissue-

A

Transports water from the roots throughout the plant.

50
Q

Phloem tissue-

A

Transports sugar to other parts of the plant.

51
Q

Vascular tissue-

A

Transports water and nutrients throughout the plant.

52
Q

Stomata-

A

Tiny openings on the bottom of the leaves that allow air to enter.

53
Q

Schleiden and schwann-

A

They made the hypothesis that organisms are all made of cells.

54
Q

Cell specialization-

A

Cells having different structures, appearances, and functions.

55
Q

The four different tissues in an animal are…

A

Muscle
Nerve
Epithelial
Connective

56
Q

The three different tissues in plants are…

A

Xylem
Phloem
Epidermal

57
Q

Where do the respiratory and circulatory systems meet?

A

The tissues of the lungs.

58
Q

Alveoli-

A

Tiny air sacs in the lungs responsible for gas exchange.

59
Q

Where does the circulatory and digestive system connect?

A

The small intestine.

60
Q

Villi-

A

Tiny fingerlike projections that are surrounded by blood vessels and are responsible for absorption.

61
Q

What are the three types of blood vessels?

A

Artery, Vein, Capillary.

62
Q

What is the key organ of your excretory system?

A

Your two kidneys.

8B science (11 decks)

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