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vova2212 [387]
3 years ago
13

The atomic number of an atom is the number of ______ in the atom's nucleus.

Biology
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer: Protons

Explanation: Every atom is defined by its protons every element. So if it has 1 proton its hydrogen no matter what. If it has 2 protons its helium no matter what and so on. So if you know the number of protons you know the element.

The atomic number tells you the number of protons that are in the core of a particular element.

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C4 plants occur more commonly in desert conditions because _____. a. they can fix carbon at the lower CO2 concentrations that de
ahrayia [7]

Answer:

a. they can fix carbon at the lower CO2 concentrations that develop when the stomata are closed

Explanation:

C4 plants are those that have the capacity to fix CO2 even when a tiny concentration of it is available.

Desert condition is characterized by dryness and strong heat with both condition capable of creating water stress in plant as a result of evapotranspiration. In order to reduce evapotranspiration rate, desert plants (most C4 plants) close their stomata during the day.

<em>Stomata closure limit the diffusion of CO2 into desert plants and the small concentration of CO2 that results is utilized by a special enzyme in the plants.</em>

The correct option is a.

6 0
3 years ago
Read 2 more answers
In which direction does dna polymerase make new strand of dna
LenKa [72]

DNA polymerase moves along the old strand in the 3'-5' direction, creating a new strand having the same 5'-3' direction.

8 0
3 years ago
Can scientists study genetic material to classify organisms?
iren2701 [21]
<span>ny scientist studying a species could change the name. These long ... To classify organisms, scientists use similarities and differences among species. ... MATERIALS ... also use genetic evidence, which is found within an organism's DNA.</span>
6 0
3 years ago
Help asap please!
andreyandreev [35.5K]

Answer:

Active transport:

  • requires energy
  • molecules move from low to high concentration sides
  • Na+ and K+ move by active transport

Simple diffusion:

  • molecules move from high to low concentration sides
  • molecules pass between lipids
  • small non-polar and polar molecules

Facilitated diffusion:

  • molecules move from high to low concentration sides
  • involves channel proteins
  • move large molecules

Explanation:  

  • Simple Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipids' movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient. An example of diffusion is osmosis by which water is the transported molecule.
  • Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.  Glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.

  • Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane. Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential. An example of molecules moved by active transport are the Na and K.

7 0
2 years ago
Write your question here. We can't read your mind. Yet.
Nataly [62]
Let’s think about this, we can already cross out D because that is the small intestine’s function, that isn’t a picture of the small intestine.

We can also cross out A for the answers because the gallbladder is the organ that creates bile and that once again isn’t the picture of that organ.

That leaves C and B.

The stomach produces pepsin and makes hydrochloric acid, this isn’t a picture of the stomach, so that leaves you with C.


The answer to your question is C, since this is a picture of the pancreas, and the pancreas’ job is to produce enzymes that breaks down carbohydrates.
4 0
3 years ago
Read 2 more answers
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