Answer:
0.05 mg/mL ( B )
Explanation:
Given data:
20 mg/ml starch
2% solution = 2g of solute is in 100g of solvent
<u>Determine the new concentration in mg/ml </u>
Dilution equation = C1V1 = C2V2
new concentration ; applying the dilution factor
dilution factor = 1 : 400 ; ( 2 /400 )g = 0.005 g of solute is present in every 100 mL
∴ new concentration = 0.00005 g / 1 mL * ( 1000 mg / 1g ) = 0.05 mg/mL
Answer:
(2) low power: 100 small pollen grains
high power: 25 large pollen grains
Explanation:
Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).
For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.
The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.
The endomembrane contains a numerous number of membrane which includes cell membrane, lysosomes , vacoules etc. In ribosomes proteins are synthesized, so some proteins are need to be send to particular organelle. Therfore we need to tag that proteins which permits to the dock the componets of the endomembrane system. This is the way both the endomembrane and ribpsomes work together.
Answer:
Well, the coriolis effect is an invisible force that deflects the wind. In the northern hemisphere, winds blow to the right, and in the southern hemisphere, they blow to the left. Without this force, the tropics would be much hotter, and the poles much colder than they are today.
Explanation:
Explanation:
The two main plant tissue that works together to release sugar and carry hormones so that reproduction can take place are: The ground and the vascular tissue.
