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vredina [299]
3 years ago
10

During osmosis, the semi-permeable membrane is one that: A. allows only very small particles or water through. B. allows only ve

ry large particles through. C. does not allow any particles to pass through. D. decides what particles to let through based on cell signals.
Biology
1 answer:
Verizon [17]3 years ago
8 0

Osmosis always moves a solvent in one direction only, from a less concentrated solution to a more concentrated solution. As osmosis proceeds, pressure builds up on the side of the membrane where volume has increased. Ultimately, this pressure prevents more water from entering.

http://www.indiana.edu/~nimsmsf/P215/p215notes/LabManual/Lab5.pdf

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From the point of view of energy use why is recycling better?
scoray [572]
When recycling we are reusing old stuff we get rid of and making it better like for example when you recycle plastic that plastic can turn into a toy for a kid or recycling an old rusty metal that can turn into a bed or a new table. Recycling is really good for the environment because you are changing something old into something new. 

Hope this helped :)
3 0
3 years ago
If an animal fossil was found in a rock, what would be the best way to determine its absolute age?
LiRa [457]

Answer:

D

Explanation:

Absolute age is defined as the numeric age of fossils.

To identify the absolute age of a fossil,  the amount of certain radioactive elements in the rock are measured. When fossils are formed in the rocks, a small amounts of radioactive elements is included in it. The process to identify age of fossil using radioactive elements is known radiometric dating. So, radioactive isotope and its decay product gives absolute age of fossils.

Hence, the correct answer is "D".

3 0
2 years ago
describe the interaction between the Farmer and Manufacturing objects, such as farming equipment. How does energy flow
Drupady [299]

Answer:

<em>Farmers are the ones who grow crops. These plants are eaten by animals and humans. The humans then feed on animals and so on. </em>

Explanation:

The chain of feeding occurs from one trophic level to another. The organism of higher trophic level feed on organism of lower trophic level. This process is called as food chain.

In the process of food chain, the flow of energy occurs. Nonetheless, just 10% of the consumed energy streams starting with one trophic level then onto the next as some of it is utilized for metabolic exercises.

4 0
3 years ago
Name two mammals and describe the characteristic that are unique to mammals
Whitepunk [10]
Dog, cat, 
Have hair
warm blooded
5 0
4 years ago
Read 2 more answers
Select the elements that are considered to have a high level of attraction for surrounding electrons:
kotegsom [21]

Answer:

Oxygen and nitrogen

Explanation:

Oxygen and nitrogen are very electronegative than any other element in the periodic table hence they have more tendency to attract an electron towards itself

6 0
3 years ago
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