Explanation:
Low power objective shows more field of view but does not give appreciable details about the view.
- In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern.
- The nucleus stands out appreciably and it is tiny.
- The cytoplasm is also visible.
- Root cells do not have chloroplast since they do not take part in photosynthesis.
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When Amanda poured some of the liquid in a test tube, she noticed that the edges of the water curved upward, which is an example of adhesion.
When Pol filled another test tube to the top, the liquid formed a low dome, which is evidence of cohesion.
When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the solute.
All of these observations indicated the presence of covalent bonds.
Pol determined that the pH of the sample is 7, which shows the sample is neutral.
Based on all of the evidence Amanda and Pol gathered, the unknown liquid is water.
1. Two factors that are related to changes in Earth’s temperature are _______ and _______.
The sun and the atmosphere or it could also be the ocean.
2. The _______ is the measurement upon which all latitude parallel lines are measured.
Latitude
3. during winter, the northern hemisphere is tilted _______ from the sun.
Away
4. These _______ air masses are those that form at regions over higher latitudes and are indicated by a “P” on a
weather map.
polar latitudes
5. When you are near the equator, the winds you will experience are _______.
Light winds
Prostaglandin similarity with hormones is in the effect they achieve by binding to the receptors. Their effects are mediated by paracrine or autocrine mechanisms. Another hormone characteristic is the ability to stimulate adenylate cyclase activity, producing cAMP as the second messenger.
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On the other hand, prostaglandins differ from hormones in that they are not produced at a specific place but in many different places throughout the body. Also, the metabolic degradation of prostaglandins is very rapid.</span>
