Unit 2 Flashcards
1
Q
Unicellular:
A
A single cell
2
Q
Multicellular:
A
Many cells
3
Q
Muscle:
A
Moves body parts.
4
Q
Nerve:
A
Carries signals from one part of the body to another.
5
Q
Epithelial:
A
Protects the body.
6
Q
Connective:
A
Attach’s muscle to bone, holds shape.
7
Q
Systems are made out of__________.
A
Organs
8
Q
Plants have________systems than animals.
A
Fewer
9
Q
The root system is_______ground.
A
Below
10
Q
The shoot system is________ground.
A
Above
11
Q
Root system:
A
Obtains water and minerals.
12
Q
Shoot system:
A
Makes food
13
Q
Reproductive system:
A
Makes pollen and ovules.
14
Q
The five characteristics of a living thing are…(5)
A
Grow Reproduce Energy Environment Wastes
15
Q
Abiotic:
A
Non-humans
16
Q
Biotic:
A
Living
17
Q
Who was Anton Van Leeuwenhoek?
A
Made the first microscope.
18
Q
Who was Robert Hooke?
A
He saw tiny box structures, called them cellulae.
19
Q
Scientists consider the______the smallest unit of life.
A
Cell.
20
Q
The green colour in plant cells comes from the pigment___________.
A
Chlorophyll
21
Q
To view a specimen 1 000 000x you should use a/n____________________.
A
Electron Microscope.
22
Q
Cell:
A
The smallest unit that can perform the functions of life.
23
Q
Nucleus:
A
Controls all the cells activities.
24
Q
Cell Wall:
A
Protects and supports the cell.(surrounds Cell Membrane of plants, fungi, and some unicellular organisms.)
25
Cell Membrane:
Controls what enters and leaves the cell.
26
Cytoplasm:
The gel-like substance that contains and supports the structures of the cell.(Within the cell membrane.)
27
Vacuole:
Storage for water, food, wastes and other materials.
28
Chloroplast:
Allows photosynthesis to take place, contains chlorophyll.
29
Mitochondria:
Produces energy for the cell.
30
Chlorophyll:
The green pigment in plants.
31
Wet Mount:
A slide, slip, and water.
32
Electron microscope:
Use it to view a specimen at 1 000 000x.
33
Field of View:
The area seen through the eyepiece of a optical instrument.
34
Magnification:
Enlargement produced by a magnifying instrument.
35
Eyepiece/Ocular Lens:
The part you look through that works as a magnifying glass.
36
Tube:
Holds the eyepiece and the objective lens.
37
Rotating Nose-Piece:
Holds two or more objective lens that click into place if turned.
38
Objective lens:
Magnifies the object:4x, 40x, 100x.
39
Stage:
Supports the slide.
40
Diaphragm:
Controls light.
41
Condenser Lens:
Directs light.
42
Light Source:
The light
43
Arm:
Connects the base and the tube.
44
Fine Adjustment Knob:
Focuses medium and high.
45
Coarse Adjustment Knob:
Moves tube up or down.
46
How do you calculate total magnification?
Ocular lens x objective lens
47
What are the three functions a cell must carry out to stay alive?
- Obtaining materials and supply of energy.
- Making products
- Getting rid of waste
48
Permeable Membrane:
Allows all materials to pass through.
49
Selectively Permeable:
Allows specific materials to pass through.
50
All matter is made up of__________.
Particles
51
Diffusion:
The movement of particles from a area of high concentration to an area of low concentration.
52
Osmosis:
The diffusion of a solvent/ Water.
53
Phloem goes______.
Down
54
Xylem goes________.
Up
55
Root Hairs:
An extension of a single epidermal cell.
56
Transpiration:
The loss of water from a plant through evaporation.
57
Specialized cells:
Cells being different.
58
Muscle tissue:
Moves parts of the body.
59
Epithelial Tissue:
Protects the outside of the body and also covers the internal structures, such as the intestines.
60
Connective Tissue:
Connects and supports different parts of the body.
61
Nerve Tissue:
Carries signals between the brain and other body parts to co-ordinate activities.
62
Epidermal Tissue:
Protects the outside of the plant.
63
Your epidermal is your________.
Skin
64
Xylem Tissue:
Transports water throughout the plant.
65
Phloem Tissue:
Transports sugar throughout the plant.
66
Concentration:
The number of particles in a certain volume of fluid.
67
Vascular Tissue:
Transports water and nutrients throughout the plant.
68
Stomata:
Tiny opening on the bottom of leaves that allows air to enter.
69
List the FOUR different tissues in animals.(4)
Nerve
Epithelial
Connective
Muscle
70
List the THREE different tissues in plants.(3)
Phloem
Epidermal
Xylem
71
What are the TWO different systems in plants.
Root system
| Shoot system
72
What are the THREE different systems in humans.(3)
Digestive
Respiratory
Circulatory
73
Where does the circulatory and the digestive system connect?
At the tissues of the lungs.
74
Villi:
Absorbs nutrients.
75
Where does the circulatory and digestive system connect?
The small intestine.
76
What are the THREE types of blood vessels?(3)
Vein
Artery
Capillary
77
What is the key organ of the excretory system?
The TWO kidneys.
78
What are the three key organs/tissues of the nervous system?
The brain
Spinal cord
Nerves
79
What does the endocrine system do?
Hormones produced by glands.
80
What are the FOUR main components of blood and their approximate percentages in volume?
Plasma(55%)
Red Blood Cells(44%)
White Blood Cells(LT1%)
Platelet(LT1%)
81
What is the "Silent Killer"?
High Blood Pressure
82
What is a sphygmomanometer?
Measures blood pressure.
83
What FIVE things can a doctor tell from taking a patients blood pressure?
Blood volume
Heart rate
Artery size
Blood viscosity
84
What FOUR day to day activities greatly affect the circulatory system?
Smoking
Lack of exercise
High blood pressure
High level of cholesterol in blood
85
What are the THREE main types of nutrients in food?(3)
Starch
Proteins
Fat
86
What are the roles of the three nutrients?(3)
Starch-Main source of energy.
Fat-Provides energy and cushions the vital organs from shock.
Proteins-Allows growth, repairs body tissue.
87
What is the main disorder of the respiratory system?
Bronchitis
88
What can bronchitis lead to?
Emphysema
89
What is the main disorder of the digestive system?
Peptic ulcers
90
Alveoli:
Gas exchange.
91
Tissue:
A group of cells having the same structure and function.
