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Gre4nikov [31]
3 years ago
9

What 2 systems work together to give us energy?*

Biology
1 answer:
Julli [10]3 years ago
8 0

Answer:

1

Explanation:

cardiovascular and respiratory

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Describe the structure of a protein
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Peptide bonds and Amino Acids

Explanation:

Primary structure. The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. The primary structure is held together by peptide bonds that are made during the process of protein biosynthesis.

5 0
3 years ago
Why do fungi release enzymes from there tips?​
lapo4ka [179]

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They absorb the food molecules that result from the external digestion.

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2 years ago
What is the atmosphere made up
myrzilka [38]

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Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.

Explanation:

4 0
3 years ago
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Which statement about the factors that affect the affinity of hemoglobin for oxygen are FALSE? Group of answer choices Decreased
adoni [48]

Answer:

CO2 increases the affinity of oxygen for hemoglobin so that hemoglobin binds oxygen more strongly

Explanation:

Hemoglobin (Hb) is a protein found in red blood cells that functions to transport oxygen (O2) to the tissues. This protein has four subunits and each subunit binds to a heme group. Each heme group in Hb contains an iron atom that binds to one O2 molecule. The affinity of hemoglobin for O2 is a critical mechanism that is dependent on the ability of Hb to carry O2 molecules. Hb is fully saturated with O2 when all of its four O2-binding sites are occupied. Moreoever, the O2-hemoglobin dissociation curve is a plot of saturation of Hb regarding the partial pressure of O2 (PO2). A rightward shift in the curve indicates that Hb has a decreased affinity for O2, while a leftward shift in the curve indicates that Hb has an increased affinity for O2. As CO2 concentration increases, hemoglobin's affinity for O2 decreases, thereby Hb binds to O2 less tightly at heme group sites and therefore the dissociation curve shifts to the right.

6 0
3 years ago
A resonant sound when the intercostal spaces of the posterior chest are
Taya2010 [7]

Its clear that posterior chest stays outside of lungs hence the lungs muscles are involved.

  • There are different sounds occur in our body
  • When we tap on lunds tissue low pitched, hollow sounds are heard .
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  • When we tap over heart dull or thudlike sounds are normally heard
6 0
2 years ago
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