Answer:
Water channel proteins help molecules move through a cell membrane.
Answer:
C. I and II only
Explanation:
i took the test and got it right
"a" is the most probable answer but needs some elaboration.
Spiders eat their food through a process called external digestion. The gut, intestine and esophagus of a spider are designed to take in mostly liquids. The spider regurgitates digestive fluids onto the prey to digest it working more or less as a tenderizer. Once the prey begins to liquefy, it is chewed with the jaws (chelicerae) and the fluid is sucked back into the mouth together with some liquefied "'meat" from the prey.
The spider repeats this process as often as necessary to digest and ingest all but the inedible hard parts.
The options for this incomplete question are :
Fossils are living organisms that have wholly or partially been transformed into rock.
Lucy does not have bones with organic material necessary for carbon-14 dating.
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Your classmate is therefore incorrect for all of the reasons listed. (All of the above)
Answer:
The correct answer is - all of the above reasons.
Explanation:
Fossils are living life forms that have completely or mostly been changed into the rock during the process of fossilization. Lucy doesn't have bones with organic material that are essential to use the carbon 14 dating technique.
This example is additionally very old for C-14 dating to be exact, just as for some other method, however, palaeomagnetic dating can do the job of dating in this case.
Thus, the correct answer is - all of the above reasons.
Answer:
Naturally: only during daylight hours
Artificially: all 24 hours (under perfect circumstances)
Explanation:
Photosynthesis can only occur when a plant receives energy from a light source. Naturally, the light source would be the sun which is only around for a certain amount of hours. If the plant is under an artificial light source, like a lamp, then photosynthesis can occur at all hours of the day.