Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Biology Section 2 > Cell Structure and Diversity > Flashcards

Cell Structure and Diversity Flashcards

1
Q

What is tissue?

A

A group of cells that work together to perform a specific function

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

What is the function dermal tissue in plants?

A

Protects the plant

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

What is the function of vascular tissue in plants?

A

Transports water, food and minerals around the plant

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

What adaptation does xylem have for strength?

A

Enforced with lignin

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

What adaptation do leaves have to prevent water loss?

A

Waxy cuticle

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

What is nervous tissue in animals responsible for?

A

Carries electrical impulses to and from the central nervous system (CNS)

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

What is the function of connective tissue in animals?

A

Provides support and protection

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

What adaptation does nervous tissue have for rapid signal transmission?

A

Myelin sheath

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

What is tissue culture?

A

The growth of cells outside of the body, on a sterile nutrient medium

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

What adaptation allows muscle tissues to facilitate movement?

A

Can contract and relax

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

What are some uses of tissue culture?

A
  • Skin grafts for skin cancer/burn patients
  • Cancer research
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What conditions are necessary for tissue culturing?

A
  • Micropropagation of plants
  • Oxygen
  • Nutrients
  • Correct pH
  • Optimum temperature
  • Sterile conditions
  • No competition
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is an organ?

A

A group of tissues that work together to perform a function

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

Name three plant organs.

A
  • Leaf
  • Flower
  • Stem
  • Root
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Name four animal organs.

A
  • Lungs
  • Stomach
  • Heart
  • Liver
  • Kidneys
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is an organ system?

A

A group of organs that work together to perform functions

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

Name three animal organ systems.

A
  • Respiratory system
  • Urinary system
  • Digestive system
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the function of the coarse focus?

A

Used for initial focusing of the image on the slide

Coarse focus allows for quick adjustments to the focus of the microscope.

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

What does the fine focus do?

A

Provides precise focusing of the image on the slide

Fine focus is adjusted after coarse focus for clearer details.

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

What is the purpose of the stage in a light microscope?

A

The slide is placed on the stage

The stage supports the slide and allows for movement.

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

What does the eyepiece lens do?

A

Magnification of the image

The eyepiece lens is the part you look through.

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

What is the function of the objective lens?

A

Magnification of the image

Different objective lenses provide varying levels of magnification.

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

What does the clip do in a light microscope?

A

Holds the slide in place

The clip secures the slide to prevent movement.

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

What is the role of the condenser in a light microscope?

A

Focuses light onto the slide

The condenser improves image clarity by directing light.

25
What does the diaphragm do?
Adjusts the amount of light shining on the slide ## Footnote The diaphragm controls light intensity for better visibility.
26
How do you adjust the stage height?
Using the stage height adjuster ## Footnote This allows for vertical movement of the stage for focusing.
27
What is the first step in using an electron microscope?
Use the lowest power objective lens first ## Footnote Starting with lower power helps in locating the object.
28
What is the purpose of firing electrons at the object in an electron microscope?
Allows us to see the object by bouncing off electrons ## Footnote This technique provides higher resolution images.
29
How is magnification calculated?
By multiplying the power of the eyepiece lens by the power of the objective lens ## Footnote This calculation helps in determining the overall magnification of the image.
30
Fill in the blank: The _______ is used to hold the slide in place on the stage.
clip ## Footnote The clip secures the slide during observation.
31
True or False: The coarse focus knob is used for fine adjustments to the image.
False ## Footnote The coarse focus is meant for rough adjustments, while the fine focus is for detail.
32
What is the function of the nosepiece?
Holds the objective lenses ## Footnote The nosepiece allows for easy switching between different objective lenses.
33
What is the smallest functional unit of life?
The cell ## Footnote The cell is essential for all biological processes.
34
What is ultrastructure?
The structure of a cell that can be seen under an electron microscope ## Footnote Ultrastructure provides detailed insights into cellular components.
35
What is the function of the nucleus in animal cells?
Contains DNA and RNA and controls the cell processes ## Footnote The nucleus is often referred to as the control center of the cell.
36
What is the composition of the cell membrane?
Composed of phospholipids and proteins ## Footnote The cell membrane regulates the entry and exit of substances.
37
What is the primary function of ribosomes?
This is where proteins are made ## Footnote Ribosomes can be found free in the cytoplasm or attached to the endoplasmic reticulum.
38
What is the role of mitochondria in the cell?
Provides energy during respiration ## Footnote Mitochondria have cristae that increase surface area for energy production.
39
What does the cytoplasm contain?
A viscous, jelly-like liquid that contains and stabilizes the organelles ## Footnote The cytoplasm is the site for most metabolic processes.
40
What are nuclear pores?
Areas in the nuclear membrane made of various proteins through which molecules can pass in and out of the nucleus ## Footnote Nuclear pores are crucial for the transport of materials between the nucleus and cytoplasm.
41
Fill in the blank: DNA stores our _______.
genetic material ## Footnote DNA is essential for heredity and cellular function.
42
What is the overall magnification if the power of the eyepiece lens is 10x and the power of the objective lens is 4x?
40 ## Footnote Magnification is calculated by multiplying the eyepiece magnification by the objective lens magnification.
43
What is the function of the nucleolus?
Contains chromatin ## Footnote The nucleolus is involved in the production of ribosomes.
44
What is the purpose of applying methylene blue as a stain?
To clearly see the cells ## Footnote Stains enhance visibility of cellular structures under a microscope.
45
What angle should a cover slip be added to avoid air bubbles?
45 degrees ## Footnote This technique helps in preventing air bubbles that can obstruct viewing.
46
What is the function of the cell wall?
Gives the cell its shape, strengthens the cell, and prevents it from bursting ## Footnote The cell wall is a crucial structural component in plant cells.
47
What is the vacuole?
Vesicles surrounded by a membrane that have various functions, such as storage and waste removal ## Footnote Vacuoles are important for maintaining cell turgor and storage.
48
Where does photosynthesis take place?
In the chloroplast ## Footnote Chloroplasts contain chlorophyll, which traps light energy for photosynthesis.
49
What is protoplasm?
The collective term for the cytoplasm and nucleoplasm ## Footnote Protoplasm encompasses all the living contents of a cell.
50
Define prokaryotes.
Organisms whose cells do not have a membrane bound nucleus or membrane bound organelles ## Footnote Examples include bacteria.
51
Define eukaryotes.
Organisms whose cells have a membrane bound nucleus and membrane bound organelles ## Footnote Examples include plants and animals.
52
What is the purpose of applying iodine as a stain?
To enhance visibility of plant cells ## Footnote Iodine is commonly used to stain starch and cellular structures.
53
What is contained within chloroplasts that aids in photosynthesis?
Chlorophyll ## Footnote Chlorophyll is the pigment that captures light energy.
54
What does the nucleus contain?
The cell's genetic material ## Footnote The nucleus is the control center of the cell.
55
What is the role of the cover slip in microscopy?
To protect the lens and prevent the cells from drying out ## Footnote Proper use of a cover slip is essential for clear imaging.
56
Fill in the blank: The _______ is where photosynthesis takes place.
chloroplast
57
Fill in the blank: Protoplasm includes the _______ and nucleoplasm.
cytoplasm
58
True or False: Eukaryotic cells lack a membrane-bound nucleus.
False ## Footnote Eukaryotic cells are defined by their membrane-bound nucleus.
59

Biology Section 2 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions