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stellarik [79]
3 years ago
7

Which statements explain the gas exchange that happens at the alveoli? Check all that apply.

Biology
1 answer:
Arturiano [62]3 years ago
8 0

Answer: B, C, E

Explanation:

We breathe in oxygen, which travels to the alveoli in our lungs. The alveoli "gives" oxygen to the capillaries, which carry blood. The capillaries "give" its carbon dioxide (which is what oxygen becomes when used by our body) to the alveoli. The carbon dioxide travel back out when we exhale. Although, the air we breathe out has some oxygen content.

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Proteins are three dimensional molecules made of strands of amino acids (imagine a ball of string). There are 20 different amino
zlopas [31]

Answer:

A series of nonpolar amino acids would most likely be located in the interior region of the tridimensional molecule.

Explanation:

Proteins are formed by linearly arranged amino acids, each with a side chain: the R-group.

Of the 20 different amino acids that compose the proteins, about half of them -10- are non-polar. Their R-groups are not stable if they are in contact with water, meaning that non-polar amino acids are hydrophobic.

When proteins are synthesized, they acquire a three-dimensional structure that makes them more stable. Lineal polypeptides get folded and turn into a shape that makes them more stable in the environment and capable of accomplishing their biological role. When they are in an aqueous media, their bent shape leaves the hydrophilic R-groups in contact with water. The hydrophilic R-groups stick in the center of the polypeptide, facing the protein interior, and avoiding interaction with water.

3 0
3 years ago
Can someone help me with these questions?
Black_prince [1.1K]

Answer: 3. adenine (A, green), thymine (T, red), cytosine (C, orange), and guanine (G, blue). 4. adenine (A), cytosine (C), and guanine (G) — are also found in DNA. 5. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). 6.  food crops like soy and corn that have been genetically modified for pest and herbicide resistance. These crops are widely known as “GMOs” (genetically modified organisms). 7. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine. brainliest?

Explanation:

8 0
3 years ago
In the context of protein digestion, protein breakdown into its amino acid constituents is completed by?
Artemon [7]

In the context of protein digestion, protein breakdown into its amino acid constituents is completed by <u>proteases </u><u>produced in the small intestine</u>

<u />

  • Protein-degrading enzymes are referred to as proteases. These enzymes are produced by bacteria, fungus, plants, and mammals.
  • Proteins in the body or on the skin are broken down by proteolytic enzymes.
  • This may aid in digestion or the breakdown of proteins that contribute to inflammation and pain.
  • The small intestine, pancreas, and stomach all manufacture protease.
  • The stomach and small intestine are where the majority of chemical reactions take place.
  • Pepsin is the primary digestive enzyme that targets proteins in the stomach.
  • Proteases are released by the pancreas into the proximal small intestine, where they combine with proteins that have already been altered by gastric secretions and break them down into amino acids, which are then absorbed and utilized by the body as necessary.

learn more about proteases here:

brainly.com/question/24155941

#SPJ4

<u />

5 0
1 year ago
Challenge: A chemical equation is balanced when each side of the equation includes the same number of each type of atom.
nirvana33 [79]
If the reactants are the same the equations are balance but if the reactants are not the same you have to make them balance, however if the reactants are not balance  in order to balance the equation you need to use coefficient to balance the reactants and products of particular chemical reaction.
yet for Photosynthesis the equation 
CO_2 + H_2O => C_6H_12O_6 + H_2O + O_2
Find the ugliest Compound in equation and do not balance first the repetitive Element.
A)So the ugliest one is C_6H_12O_6 and the C is not repetitive and have six atoms so there fore we multiply 6 as coefficient with carbon dioxide.
6CO₂+ H₂O → C₆H₁₂O₆+H₂O+O₂ but oxygen will get 12 atoms because is to all Carbon dioxide.
B) Then we have carbon balanced then we are going to balance Hydrogen, yet on product side it have 14 but on the reactant side it have 2 but Oxygen on product side is 9 there but on reactant side we have 1 so there fore we have to multiply water on reactant side by 12 and on product side multiply water with six and in addition multiply oxygen with 6 which land you at:
6CO₂+ 12H₂O → C₆H₁₂O₆+6H₂O+6O₂.
so we will have 24 hydrogen and 24 oxygen on both sides. 
Hope that helps you.

6 0
3 years ago
Help plssssssssssssssssssss
julsineya [31]

Answer:

B.)

Explanation:

3 0
3 years ago
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