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Cell Biology

Explore questions in the Cell Biology category that you can ask Spark.E!

Phase which results in production of two identical nuclei. (plural for nucleus)
Period of cell growth after cytokinesis
The nuclear membrane is absent during the entire phase.
The nucleolus disappears and nuclear membrane begins to break down
Warmer temperatures generally ______ enzymatic activity, but when temperatures increase too much, enzymes denature.
Characterized by pinching of cell membrane in animal cells.
Protein that regulates the cell cycle
Chromosomes appear as duplicated chromosomes (sister chromatids).
Chromosomes align on the equator of the cell
The amount of energy required to start a reaction is called the _____ energy.
True or false: Living organisms would not be able to survive without enzymes because reactions would proceed too slowly.
Select all types of molecules that cells use for long-term energy storage.
only a few seconds worth, the formation of ATP occurs continuously
1. substrate enters active site forming enzyme-substrate complex2. enzyme changes shape slightly, resulting in even closer fit (induced fit model)3. change in enzyme shape stresses chemical bonds, permitting new bonds to be formed4. products are released; enzyme may repeat process
Without ______, many reactions would occur too slowly for an organism to survive.
Which of the following is a type of cell organelle?
Which part of an egg is most similar to the cell membrane?
f you wanted to see a cell wall, where could you look?
The majority of a cell's interior is comprised of:
At the end of a biochemical reaction, the enzyme

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