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Nonamiya [84]
3 years ago
13

Which of these is a provisioning service— a benefit that is obtained directly from the environment?

Biology
2 answers:
dsp733 years ago
7 0

I believe it is either B or A, personally i'm leaning towards B, but at the same time, i don't think that we would be obtaining materials via pollination, so it then causes A to make more sense.

cricket20 [7]3 years ago
3 0

Answer: Providing building materials.

Explanation:

Provisioning services can be defined as the services that can be obtained directly from the environment or ecosystem.

Example: food, timber, fiber.

These services provide long timber and wooden logs that provide the raw material which is required for the construction of buildings and houses.

This is obtained directly from the environment from plants and trees.

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Explain why serine proteases do not catalyze hydrolysis if the amino acid at the hydrolysis site is a D-amino acid. Trypsin, for
kotykmax [81]

Answer:

Explanation:

A protease is an enzyme that catalyzes the hydrolysis of the peptide bonds that tie polypeptide chains together, releasing individual amino acid subunits. The L and D nomenclature for amino acids defines the structure of the glyceraldehyde isomer through which the amino acid can be produced.

SEE BELOW FOR THE APPROPRIATE STRUCTURES.

We need to figure out why swine proteases hydrolyze L-amino acids but not D-amino acids in any way. we know that enzymatic catalysts act as polypeptides if you can recall. They must retain a very precise three-dimensional structure for a catalytic activity to occur. Substrates that do not quite match the required configuration at the active site will not be reacted to — this is a "lock and key" style.

The present exercise may be explained by the fact that the configuration and structure of D-amino acids prevent them from binding properly to the active site of the protease enzyme. Perhaps they're pointed in the wrong direction, or perhaps there happens to be missing electrical interaction that's needed to keep the substrate in position.

Nonetheless, L-amino acids, on the other hand, seem to have the right configurational aspects in the active site and are hydrolyzed.

5 0
3 years ago
Who first identified nucleic acids, and where were they discovered? Friedrich Meischer discovered nucleic acids in blood cells.
AnnyKZ [126]

Answer:

Friedrich Miescher discovered nucleic acids in blood cells.

Nuclein was discovered by Friedrich Miescher in 1869

Explanation

In the somewhat early 1880s Albert Kossel further purified the substance and discovered its highly acidic properties. Then he later discovered the nucleobases. In 1889 Richard Altman creates the term nucleic acid. Friedrich Miescher was the first scientist to ever isolate nucleic acid.

7 0
3 years ago
Read 2 more answers
C.___P2O3 ___P4+ ___O2 right answers only
r-ruslan [8.4K]

Answer: The answer is B

Explanation: It’s P2O3 and P4 and O3, to balance them you have to put a 2 in the first so it’ll be P4O6 ——— P4 , O6.

6 0
3 years ago
What are two of the products of the Krebs cycle?
Nastasia [14]

Answer: Option B) NADH and FADH2

Explanation:

The purpose of the Krebs cycle is to convert potential chemical energy into metabolic energy in the form of ATP that can be used by the body.

Hence, the products of the Krebs cycle include:

- 3 molecules of NADH,

- 1 molecule of FADH2,

- 1 molecule of GTP,

- 2 molecules of CO2

Thus, NADH and FADH2 are two of the products of Krebs cycle.

8 0
3 years ago
A scientist conducts an experiment on a virus and a species of bacteria. The virus and the bacteria are put in the same Petri di
Vinvika [58]

Answer:

the scientific knows this answer hahhahahahahahahahahhahahahahhahahahahahahahaaahhahahahahhahahahahhahahahhahahahha

Explanation:

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6 0
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