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Trava [24]
3 years ago
13

Mechanical energy is the energy of _____.

Biology
1 answer:
valentina_108 [34]3 years ago
4 0

Answer:

Mechanical energy is the energy of potential and kinetic energy i.e sum of potential and kinetic energy.

Explanation:

Mechanical energy is the energy posses by an object which enable it to work due to it's potion or movement.

Mechanical energy can be inform of potential energy( energy stored or due to object position) or kinetic energy( object in motion).

Mechanical energy is the sum of potential energy and kinetic energy. This energy is associated with object's position or motion.

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Producers, like plants, take in oxygen gas and release carbon dioxide during ____, just like animals and other living things.
astra-53 [7]

Answer:

Explanation:

Cellular respiration

4 0
3 years ago
Put the following steps for urine formation in order from first (step 1) to last (step 4).
olchik [2.2K]

Answer:

Filtrate travels down the nephron tubule - Step 2

Blood is filtered in the glomerulus and captured in Bowman’s capsule -Step 1

Urine is collected in vessels and leaves the kidneys - Step 4

Beneficial molecules and water are reabsorbed into the blood - Step 3

Explanation:

7 0
3 years ago
Describe the substrate specificity of chymotrypsin and the structural feature that determines this specificity.
serg [7]

Answer:

The main substrate of chymotrypsin includes tryptophan, tyrosine, phenylalanine and methionine

Explanation:

1.

Histidine yields a proton to aspartate and recovers it from serine.

Seen in another way: aspartate captures a proton from the serine through histidine.

2.

a) The serine (deprotonated) is thus capable of attacking the peptide bond (nucleophilic carbonyl attack) and forms a tetrahedral intermediate; The substrate is thus covalently bound to the enzyme (now it is a transition state).

b) The peptide bond is broken and the released amino terminus (R) recovers a proton from histidine.

c) Histidine, in turn, recovers it from aspartic.

3.

a) Aspartate captures a proton of histidine again, so that it can capture it in turn from water.

b) This generates a hydroxide anion that attacks the ester intermediate between the serine and the carboxyl part (R ′) of the substrate peptide.

c) A new tetrahedral intermediate bound to the enzyme is formed (via serine residue).

4.

a) The carboxyl group of the peptide is regenerated, the serine being separated and the other peptide fragment being free (the R ′ part with a free carboxyl end)

b) The serine recovers the proton at the expense of histidine, which in turn captures it from aspartic acid.

c) The catalytic triad (Asp, His, Ser) has been regenerated in its original state.

The net reaction is:

R–NH – CO –R ′ + H2O ⟶ R– NH2 + HOOC –R ′ ⟶ R – NH3 + + −OOC –R ′

The active site or catalytic center of chymotrypsin is formed by several amino acid residues, among which the essential role corresponds to the "catalytic triad".

5 0
3 years ago
In 1939, the use of DDT (a powerful synthetic chemical) as an insecticide was discovered. The United States adopted its widespre
olganol [36]
The answer is <span>insect and pest populations decreased.
</span>

DDT (dichlorodiphenyltrichloroethane) was used as an insecticide which is a substance used to kill insects. That resulted in decrease in insect and pest populations. It is a persistent and non-degradable insecticide, but as well organic pollutant readily accumulated to soils and consequently affects organisms.
7 0
3 years ago
Read 2 more answers
What happens to water when it freezes?
Slav-nsk [51]
It turns into a solid and if you melt it it becomes a liquid and if you boil it it becomes a vapor
6 0
3 years ago
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