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mezya [45]
2 years ago
11

How does a catalyst work?

Biology
2 answers:
vekshin12 years ago
6 0
<span>A Catalyst changes the rate of a chemical reaction but will not be used up during the reaction.</span> 
DedPeter [7]2 years ago
6 0
A catalyst is something in a chemical reaction that initiates the reaction. Without it, the reaction may not occur, or may occur more slowly.
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Using your knowledge of the water cycle, why do you think high sea surface
Wewaii [24]

Answer:

Explanation:

The correlation between sea surface temperature and water vapor is that both are driven by seasonal changes. They both increase in the hemisphere during summer. Seasonal changes in water vapor are, however, more evident across the land, largely due to changes in land surface temperature.

3 0
2 years ago
What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? hints?
Licemer1 [7]

Simple diffusion is the process by which a substance moves across a cell membrane from an area of high concentration to an area of low concentration. Substances that move by simple diffusion are able to diffuse directly across the phospholipid bilayer of the cell membrane. These substances are generally small and neutral, as large or charged particles cannot cross the phospholipid bilayer. Some examples of molecules that move by simple diffusion are carbon dioxide and oxygen.  

Facilitated diffusion is the process by which a substance moves across a cell membrane from an area of high concentration to an area of low concentration with the aid of a membrane protein. Substances that move by facilitated diffusion are not able to diffuse directly across the phospholipid bilayer of the cell membrane. These substances are generally large and/or charged. They therefore travel through a protein channel in the cell membrane along their concentration gradient. Some examples of substances that can move by facilitated diffusion are glucose, sodium ions and chloride ions.  

The similarities between facilitated diffusion and simple diffusion are:  

They both involve the movement of a substance across a cell membrane along its concentration gradient (from an area of high concentration to an area of low concentration).  

They are both examples of passive transport, as neither requires energy from the cell to move the substance across the membrane.

8 0
3 years ago
What are two example of thermal energy in the real world? Thanks in advance
Shalnov [3]

HOPE THIS works

Explanation:

Boiling water on a stove is an example of thermal energy. Thermal energy is produced when the atoms and molecules in a substance vibrate faster due to a rise in temperature.

6 0
2 years ago
Why do people feel the need to breathe out of their mouth?<br> (mouth breathing)
Sergeu [11.5K]

Answer:

Why wouldn't they. but why do u breathe out of your mouth

7 0
2 years ago
This leaf is 4 inches long.”<br><br> What kind of observation is this?
MatroZZZ [7]

Answer:

This observation would be quantitative.

Explanation:

This is quantitive because it says how many of what there is.

7 0
3 years ago
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