Cellular Respiration
Which Organelle performs Cellular Respiration?
The Mitochondria
Which organelle performs Photosynthesis?
Why do cells need to reproduce. (3 reasons)
Reproduce, Healing(repair), growth
Describe a heterotroph
An organism that has to eat/take in food for energy
What are chromosomes?
A form of DNA/Condensed DNA/ Genetic Material
What kind of organisms perform Cellular respiration?
Plants and Animals (both/other acceptable answers include autotrophs and heterotrophs/all living things)
This increases surface area, allows for more photosynthesis to occur.
During Anaphase chromosomes are pulled apart at the center of the cell. How many chromosomes would a cell have STARTED with if it looked like the diagram #1 on the white board during anaphase?
3
Describe an autotroph
An organism that does photosynthesis/does not need to consume food
In # 2 on the board what is the ecological role of the grasshopper?
Primary Consumer
What are the products of Cellular Respiration?
Carbon Dioxide, ATP, Water
What are the reactants of photosynthesis (3)?
Carbon Dioxide
Water
Sunlight
What are the 3 main stages of the cell cycle?
G1, S, G2
Daughter Cells
The cells produced at the end of the cell cycle or mitosis
As energy moves through a food web the total amount of energy decreases with each trophic level. What happens to the rest of the energy/the missing energy?
It is lost as HEAT/given off as heat
What are the reactants of Cellular Respiration?
Oxygen and Glucose
What are the products of Photosynthesis?
Oxygen and Glucose
The hawk needs glucose to survive. Describe how the hawk is reliant on other organisms to get the energy it needs? (use #2 on the board)
Answer must include the grass as the photosynthesizer/primary producer where glucose is produced, then may include a description of the hawks food chain.
Describe the term referring to the physical separation of 2 daughter cells at the end of mitosis.
Cytokinesis
Describe how energy enters an ecosystem and leaves an ecosystems.
Enters through sunlight, and leaves through decomposition/lost as heat in food webs
Mitochondria have folded membranes within them, which is where the actual reaction for cellular respiration takes place. The folds provide more surface area which means in a mitochondria with more folds ...
A. ATP is produced more efficiently
B. More light energy is absorbed for chemical reactions
C. More oxygen is transported throughout the cell
D. More glucose is broken down (glycolysis)
A. ATP is produced more efficiently
Describe how photosynthesis and cellular respiration are connected.
The products of photosynthesis are the reactants of cellular respiration.
G1 and G2 are phases in the cell cycle where growth and revision of the cells DNA occur. Why would it be beneficial for a cell to have two G phases instead of just one before it divides?
Answer should include...
- enough material for the cell to split/divide
- the revision of DNA happening 2x, extra checks for mutations make sure the cells DNA is good to go (some version of this)
Describe what is S phase and what happens during S phase of the Cell Cycle.
Synthesis: The DNA is replicated/copied
What 4 elements would a closed ecosystem need to survive? (something where there are not materials regularly moving in or out. Like in a container).
- plants (photosynthesis)
- animals(cellular respiration)
- water
- sunlight