Brainscape's Knowledge GenomeTM

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


See full index

Biology > Organisms in the environment > Flashcards

Organisms in the environment Flashcards

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

Light energy

A

Energy in the form of light

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

Glucose

A

A simple sugar

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

Variegated (leaf)

A

Having different colours, eg a green and white leaf

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

Limiting factor

A

A factor which limits the rate of a reaction

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

Independent variable

A

The variable you change the values for

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

Dependent variable

A

The variable you measure the value for

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

Give some examples of the limiting factors in photosynthesis

A
  • Temperature
  • pH level
  • Light intensity
  • Carbon dioxide concentration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Mineral ion

A

A chemical needed in small amounts as part of a balanced diet to keep the body healthy

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

Nitrate ion

A

An ion which is needed by plants to make proteins

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

Biomass

A

Biological material from living or recently living organisms

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

Quantative sampling

A

Sampling which records the numbers of organisms rather than just the type

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

Transect

A

A measured line or area along which ecological measurements are made

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

Quadrat

A

A piece of apparatus for sampling organisms in the field

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

Sample size

A

The size of a sample in an investigation

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

Range

A

The maximum and minimum values of the independent or dependent variables - important for detecting patterns

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

Mean

A

The average of a series of numbers

17
Q

Median

A

The middle value in a list of data

18
Q

Mode

A

The most common value in a set of data

19
Q

Valid (investigation)

A

An investigation where all possible values are controlled

20
Q

Variable

A

A physical, chemical or biological quantity or characteristic

21
Q

Repeatable

A

Repeating the investigation with the same method and equipment obtains the same results

22
Q

Reproducible

A

The measurement can be repeated by another person, using a different technique or piece of equipment, and produce the same result

23
Q

carbon dioxide + water –(light energy)–>

A

carbon dioxide + water –(light energy)–> glucose + oxygen

24
Q

Where does the energy for photosynthesis come from?

A

During photosynthesis light energy is absorbed by chlorophyll in the chloroplasts of the green parts of the plant. It is used to covert carbon dioxide and water into sugar, and oxygen is released as a by product

25
Q

How are leaves well adapted for photosynthesis?

A
  • They are broad, giving them a big surface area for light to fall on
  • They have air spaces that allow carbon dioxide to enter the cells and oxygen to leave them
  • They contain chlorophyll in the chloroplasts top absorb the light energy
  • They have veins which bring plenty of water to the cells of the leaves
26
Q

How can we use what we know about limiting factors to grow more food?

A

We can manipulate the levels of light, temperature and carbon dioxide artificially to increase the rate of photosynthesis in food crops

27
Q

What do plants do with the glucose they make?

A

Plant and algal cells use the soluble glucose they produce during photosynthesis in several different ways:

  • For respiration
  • To convert into insoluble starch for storage
  • To produce fats or oils for storage
  • To produce fats, proteins or cellulose for use in the cells and cell walls
28
Q

How do plants store food?

A

Plants store food in insoluble starch, fats and oils

29
Q

What other materials do plant and algal cells need to produce proteins?

A

Plant and algal cells need other materials including nitrate ions to make the amino acids which make up proteins

30
Q

How can we control the environment in which plants are grown?

A
  • Hydroponics systems in which all the mineral ions a plant receives is controlled
  • Greenhouses where conditions are controlled using computer software
31
Q

What are the advantages and disadvantages of growing plants in an artificial environment?

A

While artificial environments can remove many of the limiting factors in plant growth, they are often very expensive to build and run

32
Q

What factors affect the distribution of organisms in their natural environment?

A
  • Temperature
  • Availability of nutrients
  • Amount of light
  • Availability of water and food
  • Availability of oxygen and carbon dioxide
33
Q

How can you measure the distribution of living things in their natural environment?

A

Random sampling with quadrats Sampling along a transect

34
Q

Does the size of your sample matter?

A

Sample size is an important factor in both the reproducibility and validity of data

Biology (6 decks)

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