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melomori [17]
3 years ago
12

Dichotomous keys are constructed based on

Biology
1 answer:
maksim [4K]3 years ago
7 0

Answer:

B is the right answer

combinations of characteristics in known organisms.

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3. Explain what the difference is between an oxygen atom and an oxygen molecule.
max2010maxim [7]

Answer:

An oxygen atom is what is found on the periodic table. The Oxygen atom is made of 8 proton, 8 electrons and generally 8 neutrons.The oxygen molecule is made of two oxygen atoms that have formed a double bond with each other and share valence electrons.

Explanation:

8 0
3 years ago
During the action of a sodium-potassium pump, 50 ATP molecules were spent. Predict how many sodium ions are transported across t
julia-pushkina [17]
<span>1 ATP molecule allows 3 Na+ to move out of the cell
and 2 K+ to enter.
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so  correct option is C 
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4 0
3 years ago
A cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules will be found per cell when this original
lesantik [10]
12 chromosomes and 24 DNA molecules per cell
6 0
3 years ago
Proteins in the cell membrane have many functions. Which type of protein would be used primarily to transport materials in or ou
S_A_V [24]

So we know that to transport materials in or out of the cell, we need to have access to both the inside and outside of the cell. This would require that the protein be a transmembrane protein that reaches both the inside and the outside of the cell.

So in this case, let's look at pore proteins. These are proteins that cross a membrane and act as a pore for the materials that need to cross the membrane.

One example of a pore protein is an aquaporin. These proteins aid in the transport of water into or out of a cell.

Therefore, the answer to your question is: A) Pore proteins.

8 0
3 years ago
Why do large organisms require a transport system?​
Anon25 [30]

Answer:

Larger animals have a lower surface area to volume ratio. This means they need transport systems like our circulatory system and exchange surfaces like our lungs or fish gills. In single-celled organisms such as protists, and small multicellular organisms, essential molecules will move to where they're needed by diffusion.

Explanation:

3 0
3 years ago
Read 2 more answers
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