Who Proposed a theory of gravity?

Are there programs and research currently in place to save the endangered polar bear population?

ladessa [460]

I like, your question... there might be I looked, for some and found these listings:

Polar Bears International (PBI)

4 0

3 years ago

How does water enable substances to pass through a cell membrane? How does water enable substances to pass through a cell membra

andrew11 [14]

Answer/Explanation:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

Source:

https://www2.estrellamountain.edu/faculty/farabee/biobk/biobooktransp.html#:~:text=Water%2C%20carbon%20dioxide%2C%20and%20oxygen,to%20cross%20the%20cell%20membrane.

Hope this helps!

4 0

1 year ago

Which activities are ways to reduce the negative impacts humans have on Earths resources? Select two options

Maslowich

Answer:

Using water from faucets or anywhere else only when needed. Don't waste water.
Only use electricity/lights when it's needed. Your bill might go really high.
Don't trash the Earth! It has a heart too.
Try using a bike, less pollution.
Put the trash in the right place! Or the poor animals might or suffocate in them.

7 0

3 years ago

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During DNA replication each stands of dna is used as a temple to produce a complementary stand of DNA this process is shown belo

castortr0y [4]

<h2><u>Full question:</u></h2>

During DNA replication, each strand of DNA is used as a template to produce

a complementary strand of DNA. This process is shown below. Which base

will attach to location 2?

A. Adenine B. Allimene C. Thymine D. Tyrosine

<h2><u>Answer:</u></h2>

Base thymine will get attached the location 2.

Option C

<h3><u>Explanation:</u></h3>

DNA replication is the process by which the genetic material that is deoxyribonucleic acid is getting replicated into its daughter DNA by the process which involves a lot of enzymes and energy. This process involves the formation of complementary base pairing between the nitrogen bases present in the nucleotides of DNA.

As the DNA replication starts the enzymes helicase and gyrase comes in action which open up the double stranded DNA which then is acted by DNA dependent DNA polymerase which gets attached to the coding strand of the DNA and starts accumulating the nucleotides from the cytoplasm and nucleoplasm that are complementary to the nitrogen base that is present on the coding strand. This process is very fast and can go up to speed of 30 to 40 base per second. This process is fully based on the complementary base pairing nature of DNA which bring the nucleotide from the nucleoplasm that is complementary to the base present on the coding strand. And this nucleotide is the same that is present on the other strand of the DNA because the DNA double helix contains the the complementary bases that actually forms hydrogen bond between themselves.

Here in the location to we can see that adenine is present as the nitrogen base. The complementary base to adenine is thymine. So the complementary base that will be present there will be thymine itself

8 0

3 years ago

5. Which of the following is an example of active transport?

Nadusha1986 [10]

Answer:

D (proteins moving ions from low to high concentration across a cell membrane)

Explanation:

Active transport, by definition, is a type of substance transport that requires energy (typically in the form of ATP). Having said that, we can immediately eliminate B (aka water diffusion throughout the cytoplasm of a cell), as diffusion (osmosis in this case) does not require any expenditure/spending of energy. Next, we can cancel A and C because although they do require energy, there is no transport involved. Thus that leaves us with D. D is not only the answer because of the process of elimination but also b/c the ans. choice says that ions are being moved from low to high concentration, which is against the concentration gradient and thus requires energy. Hope you found this helpful! :)

6 0

2 years ago

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