Parts of a Cell
What is a centromere?
The area on sister chromatids that connect them together.
When it is said that water is polar, then what does that mean?
Name the parts of an atom.
Protons, neutrons, and electrons.
Explain the difference between asexual reproduction and sexual reproduction?
A.R. is when only one parent reproduces through budding or fragmentation.
S.R. involves 2 parents and their gametes (sperm & eggs)
How long does it take a cell to complete mitosis?
Usually 20 minutes.
In the sweet ice tea lab, what were we demostrating?
Solvents & Solutes
What separates the cell from the its environment?
Cell membrane, or plasma membrane
When we did the drops of water on a penny lab, what were we demonstrating?
Water has high surface tension.
Name the four organic molecules.
Carbohydrates, lipids, proteins, and nucleic acids
Why is energy important to living things?
A cell cannot function without energy.
What is the G0 phase, and what two types of cells live in this state permanently?
G0 phase is the phase where cell growth & cell reproduction does not occur. Heart and nerve cells.
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In the surface area to cell volume lab (beet cubes lab) does the surface area to volume ratio need to be small or large to get the nutrients all the way into the cell & the wastes to get all the way out of the cell? Why?
Large
Why? Because if the ratio is large then the cell, is small.
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What type of cell has a large vacuole and also chloroplasts?
Plant cells
Why does water "flow?"
Water flows because it is a liquid, meaning its molecules aren't held in a rigid, crystalline structure. Forces (gravity) act upon the water and its bonds break and quickly come back together and rebond.
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Define atomic number.
The number of protons in an atom.
A cat runs away from a loud noise. Is this a stimulus or a response?
Response
Name the 4 phases of the cell cycle. Name the 4 phases of mitosis. (Neither has to be in order.)
Cell Cycle: G1, G2, S, G0
Mitosis: Prophase, Metaphase, Anaphase, Telophase.
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In the measuring length lab, you measure a lot of objects. Outside of the USA, what system of units would be used?
The metric system.
Where is the nucleolus located, and what is its function?
In the nucleus
It makes ribosomes.
What types of cells must have water?
ALL cells need water.
When you add chocolate syrup into a glass of milk, which one is the solvent, and which one is the solute?
Milk=solvent
Chocolate sauce=solute
Must every member of a particular species be able to reproduce itself in order for the species to survive? Explain why or why not.
As long as there are many members, then not every organism have to reproduce and produce offspring.
Define a cancer cell.
A cell that grows uncontrollably.
Labwork went on for over 100 years to prove that life comes from existing life. What theory was finally disproved in the 1800's by Pasteur?
Spontaneous Generation
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What gives a cell structure and also holds the organelles?
Cytoskeleton
Why are the electrons in hydrogen pulled towards the oxygen atom?
Because the oxygen atom with its 8 positive protons attracts the electrons more than the hydrogen atoms which only have 1 proton each.
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Explain why salad without dressing is a mixture.
You can separate the parts of a mixture.
Define photsynthesis.
The process that plants use to make their own food using energy from the sun.
Are all cells in the same phase at the same time?
No
When doing a dissection, how do you use tools safely and not cut or poke yourself?
The points and also the cutting edges of the tools need to be directed away from you.
Name the 7 traits of living things.
organization, reproduction, homeostasis, metabolism, response to stimuli, growth and development, & adaptation
What funny sounding phrase do we say to remember the difference between solute and solvent?
The thief placed his loot (solute) in the vent (solvent).
A block of gold is made up of the same type of atoms. Gold is an ________.
Element
Are all cells alike? Give evidence to defend your answer.
No, they are not all the same. Cells have different shapes and functions.
Name the molecule that determines when a cell must split itself because it is getting too big.
Cyclin
In the microscope stomata lab, the stomata look like which body part?
Mouth