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
<em />
<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.
Answer:
photosynthesis is what organisms use to create food and energy. this comes from the sun. and cellular respiration is carbon dioxide that comes from the animal after photosynthesis
Explanation:
But the many-celled algae, make their food by photosynthesis. Plants have complex, multi-cellular reproductive systems and might need wind, birds, or bugs for pollination. Algae can reproduce through tiny spores or even by replication or the growth of broken piec
The purple coloured sea urchins increases as starfish eats other colours, this type of selection represents Disruptive selection.
<h3>
What is Disruptive
selection?</h3>
Disruptive selection is also called diversifying selection, describes changes in population in which extreme values for a trait that are favored over intermediate values.
So we can conclude that purple coloured sea urchins increases as starfish eats other colours, this type of selection represents Disruptive selection.
Learn more about selection here: brainly.com/question/25261401
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<span>B. organ systems, organs, tissues, cells
Organ systems are the most complex in this grouping, they are made up of multiple organs, tissues and cells all working together with other organ systems to keep an organism alive. Examples of organ systems are the digestive system, respiratory system, nervous system. Organs are groups of tissues and cells working together with a main purpose. Examples of organs are heart (pumps blood), brain (controls the body), stomach (digests food). Tissues are groups of cells working together as a whole such as cardiac tissue, adipose tissue and blood. Cells are the smallest unit of life, in groups they form tissues and organs. Cells of the body include neurons, blood cells, skin cells, and fat cells.</span>
