Chapter 2 Flashcards

Cells and Systems

1
Q

What do microscopes allow us to see?

A

CELLS!

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

Compound means

A

two or more lenses which allow us to see very small things

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

Formula for Magnification

A

Magnification(m) = Objective(o) * Eyepiece(e)

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

Field of view is measured as…

A

the diameter of the circle you see

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

Cells are the basic unit of every system: True or False

A

TRUE!

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

Describe tissue

A

the collection of cells that perform the same job

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

Organs are

A

structures that perform particular functions

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

Tell me about systems

A

its a composition of multiple organs to fulfill distinct characteristics

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

What do organelles do?

A

They serve function to the cell.

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

What are organelles?

A

They are membrane bound structure inside the cell.

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

Function of cell membrane is to

A

surround and protect the contents of the cell

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

Cytoplasm can be described as

A

a water-like fluid that fills the cell while distributing material throughout

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

What does the nucleus do?

A

It controls the cell’s activities

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

Vacuoles are storage space for…

A

waste and other substances

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

The power plan of the cell is known as

A

Mitochondria

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

Which part of the cell breaks down and digests materials?

A

The lysosome

17
Q

Golgi Apparatus does what?

A

It tells molecules where they need to be shipped.

18
Q

Endoplasmic Reticulum

A

has a function of gathering simple materials and packaging them in a more complexed way

19
Q

Tell me what the cell wall is responsible for.

A

Providing support for the cell.

20
Q

Which is thicker, cell membrane or cell wall?

A

The cell wall.

21
Q

Photosynthesis occurs in which organelle

A

Chloroplasts

22
Q

Which chemical is found in chloroplasts?

A

Chlorophyll!

23
Q

Name 3 unicellar organisms.

A

Ameoba, Bacteria, Paramecium

24
Q

Multicellar organisms have more than two cells
True or False

25
A selectively permeable membrane...
only allows SOME materials to pass through it
26
Tell me what diffusion is
It's the movement of particles from high concentration to low concentration.
27
Describe Osmosis
Diffusion through water, except it requires a semipermeable mebrane.
28
What does it mean to reach equillibrium?
When all the particles within a liquid are evenly dispersed.
29
Do red blood cells have a nucleus?
No they do not.
30
STEM cells are what?
The first cell of a multicellular organism.
31
What are the 4 different types of tissues?
Connective, Epithal, Nervous, Muscle
32
Describe what happens to cells in hypotonic solutions
cell is put into pure water, and water rushes into the cell - cell EXPLODES
33
Isotonic solutions occur when
water going into the cell moves at the same rate as water moving out of the cell
34
Hypertonic solutions are when
the cell is placedin a sugary or salty solution, and due to osmosis water, moves out of the cell - cell SHRIVELS up
35
Homeostasis is when
an organism remains stable internally regardless of its environment
36
What is the specialization of Muscle Cells?
Movement and Strength
37
Nerve cells specialize in
sending messages