Flashcards in Unit 4 Definitions Deck (22):
1
What is a population
All of the organisms of one species in a habitat
2
What is a community
All if the different populations of species in a habitat
3
What is habitat
A place where an organism lives
4
What is an ecosystem
A mix of different communities and habitats and how they interact based on biotic and abiotic factors
5
What is an ecological niche
The organisms role within an ecosystem and its interaction with abiotic and biotic factors
6
What does a survival curve show
The percentage of the population still alive at each age
7
How do you calculate the life expectancy from a survival curve
Measure the age at which fifty percentage of the individuals are alive
8
What is a demographic transition model
Graph to represent how countries change with development
9
What does a population pyramid with a wide base and a narrow top show
A developing country
High birth rate
Increasing population
Young population
10
What does a population pyramid with a narrow base and a wide middle show
Developed country
Low birth rate
Decreasing population
Old population
11
What's the structure of ATP
1 adenosine
3 phosphate
Ribose sugar
12
Where does ATP carry energy
In its bonds
13
What 3 ways can ATP be formed
Photo Phosphorylation, light dependent stage of photosynthesis
Substrate level phosphorylation, kerbs cycle and glycolysis
Oxidative Photophosphorylation, electron transport chain
14
What makes ATP from a good source of energy
Immediate, only need to break one weak bond
Manageable, releases small amount of energy so none is wasted
15
Give 4 uses of ATP from respiration in organisms
Active transport
Protein synthesis
Maintenance of body temperature
DNA replication
16
What is photosynthesis
Using light energy to make glucose
Occurs in plants to use the glucose in respiration
17
Give 3 adaptations of plants for photosynthesis
Leaf near top of plant, closer to light
Leaf is thin and wide, large sa and short dp
Palisade cell has many chloroplasts, the site of photosynthesis
18
How to measure the rate of photosynthesis in two ways
Measure amount of co2 used
Or measure amount of O2 produced using photosynthometer
19
How does a photosynthometer work and calculate the rate of photosynthesis
Surround plant in sodium hydrocarbon ate solution
Collect O2 in capillary tube
Convert amount collected into volume using pie r squared
Volume divided by time to calculate the rate
20
How does limiting light on the Calvin cycle effect ribulose biphosphate
Rbp decreases as being converted into GP but no reformation by triode phosphate as there's no ATP
21
How does limiting light on the Calvin cycle effect glycerate phosphate
GP increases as not converted into triose phosphate as there's no ATP but is for me by rbp
22