Answer:
The Retina
Explanation:
The photoreceptors lie at the back of the retina
You would have to try on order to hurt yourself. Assuming you did the proper procedures Before and the specimen is fully in sight on the x and y axis and height is the only other thing to look at, then grab the fine adjustment knob ( the smaller coarse adjustment knob), and move it to the desired height. If the specimen starts to get blurry, turn the other way. This is a lot easier if your hand doesn’t move a lot when being held still
Answer:
From this it can be deduced that the fresh water is hypotonic and the salt solution is hypertonic to the cells of the celery stalks.
Explanation:
When submerged in water, the celery stalks become stiff and hard, this shows that water moves within the stalk, thus, water is hypotonic in comparison to the celery stalk. Therefore, water moves from the region of higher concentration to the region of lower concentration.
When the same celery stalk is administered into the 0.15 M solution it turns soft, which shows that water from the celery stalk moves out. Thus, the salt solution is hypertonic in comparison to the celery stalk. Therefore, freshwater is hypertonic and the solution of salt is hypertonic to the celery stalk cells.
When the two waves meet, there are two possibilities:
1.If the waves were both in phase and moving in the same direction, then, the amplitude will double, this is called constructive interference.
2. If the two waves were exactly out of phase, then they will try to move the water surface in all directions, thus, no movement and the waves cancel out. This is called destructive interference.
