Answer:
What is the effect of power/magnification on the frequency and size of organelles under a microscope?
Explanation:
Organelles within the cell are responsible for carrying out various functions. Some cells are more specialized than others, and may have particular organelles at a higher frequency, or showing a variation in size; sub-cellular structures become more visible at higher magnifications under the microscope.
Hypotheses:
- organelle A's frequency decreases while B's frequency increases at higher magnifications
- organelle A's size increases while B's size decreases at higher magnifications
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<em>Dependent variables: size and frequency cell organelles</em>
<em>Independent variable: power/magnification at low (x4), medium(x10) and high (x40)</em>
<em>Controlled variables: Type of organelles, microscope used, cell examined, </em>
Method:
1. Examine the organelles A and B in a cell mounted on a slide; use the fine adjustment to focus on the cell.
- Frequency: What is the average number of organelle A versus B, seen at low (x4), medium (x10) and high (x40) magnifications?
- Size: Measure the average diameter of organelle A versus B using an ocular micrometer at low, medium and high magnification.
2. Record and tabulate observations.
An example of homeostasis would be sweating when the temperature is hot.
Answer:
d visible traits depend on the dominant and recessive forms of genes from.....
Explanation:
Cytokinesis<span> begins in anaphase in animal cells and prophase in plant cells
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Answer:
B. The information will be reliable
Explanation:
By elimination:
Information on government websites is usually impartial, so A is eliminated. Additionally, information on a government website is not necessarily easy to understand, so that choice cannot be the correct answer either. The only remaining choice is B, so it is correct.
