In which organelle does cellular respiration occur
Mitochondria
If a cell has 50 chromosomes, how many chromosomes will each of its daughter cells have after mitosis and cytokinesis
50
How does a cell know when to move on to the next stage of its cell cycle
Through the use of internal regulatory proteins
What are the reactants of photosynthesis
Carbon dioxide, water, and sunlight
What ensures that the end count of chromosomes for each of the daughter cells is the same as the original parent cell before it duplicates its DNA.
Cells double the DNA in the synthesis phase of interphase and divide the chromosomes during Anaphase
What are the group of proteins responsible for timing the cell cycle?
cyclins
Describe the process of ADP forming ATP.
Add another phosphate group to the second phosphate group of ADP. This stores energy.
Define sexual and asexual reproduction
Asexual - A form of reproduction that results in two, genetically identical cells.
Sexual - A form of reproduction that results in four, genetically different cells.
Describe the process of apoptosis
- Cell and chromatin shrink
- Parts of the cell membrane break off
- Neighboring cells clean up the remains
Why is the process of cellular respiration also considered the “reverse” of photosynthesis?
The reactants of photosynthesis are the products of cellular respiration (except sunlight which is in the form of ATP in CR). And the products of photosynthesis are the reactants of cellular respiration.
If a cell proceeded to divide, but did not complete the G2 phase, what would be the end result?
A cell that lacks the correct number of organelles
If the protein group called growth factors were to be damaged, what would happen to the cell?
The cell would be unable to divide
Why is NADP+ used for photosynthesis?
NADP+ is capable of carrying high energy electrons and can store the energy in its bonds until it needs to be released. (NADPH back to NADP+)
A strand of human DNA is around 6.6 feet in length when stretched out. The molecule must be capable of fitting inside of the nucleolus. How is this possible?
DNA condenses into chromosomes. It does so by being tightly wound around proteins called histones.
Describe the process of a carcinogen leading to a cancerous tumor.
A carcinogen damages the portion of DNA that codes for regulatory protein. The cell can no longer control internal, external, cyclin, or growth factor regulatory proteins. This causes the cell to divide uncontrollably, incorrectly, and can sometimes cause it to divide quickly (without external regulators or cyclins to say otherwise)
Draw the process of binary fission