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3 years ago

A2 Suggest why the Petri dish and agar jelly needed to be sterile.

1 answer:

6 0

A Petri dish (Petri plate) is a shallow cylindrical glass lidded dish that is typically used to culture microorganisms (agar plates). There are glass and plastic Petri dishes, and both can be sterilized (using an autoclave) and re-used. Before being used for culture purposes, it is important to ensure that the Petri dish is not only clean, but also sterile. This helps prevent the contamination of the new culture.Agar is a polymer made up of various sub-units of galactose and various species of red algae. Although it has other uses including culinary and dentistry, agar plays an important role in microbiology as culture media for a variety of microorganisms.As compared to some of the other alternatives like gelatin, agar has a number of advantages which include:Cannot be easily degraded by microorganism Stronger Firmer than gelatin

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A system of classifying and organizing online content into categories by the use of user-generated metadata such as keywords is

SCORPION-xisa [38]

Answer:

Folksonomy.

Explanation:

A system of classifying and organizing online content into categories by the use of user-generated metadata such as keywords is called a folksonomy.

This ultimately implies that, folksonomy is a user-generated system which is typically used for classifying and organizing online content into various categories through the use of metadata such as keywords, electronic tags and public tags in order to make it easier to find in the future.

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2 years ago

(BRAINLIEST FOR FIRST CORRECT ANSWER) Mark (all) the statements that best describe the use of spreadsheets and tables in present

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3 years ago

Prove the following assertion: For every game tree, the utility obtained by MAX using minimax decisions against a suboptimal MIN

TiliK225 [7]

Answer:

From the given diagram, consider a MIN node whose children are terminal nodes, if MIN plays

suboptimal. MIN will never be lower than the utility obtained playing against an optimal MIN

MIN will always select a move having minimax utility greater than or equal to the move that is

predicted by the minimax that is the MIN-played optimal value.

Then the MIN node's value is increased to MAX. This is done by induction.

One can do better than the minimax strategy, if the suboptimal play is predicted by MIN.

If MIN always falls for certain for certain kind of trap and losses, then setting up a trap guarantees a win.

Explanation:

See attached picture also.

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3 years ago

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Alexxandr [17]

Answer:

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3 years ago

1. Write a Python code to:

Ksenya-84 [330]

Answer:

hope this help and do consider giving brainliest

Explanation:

import numpy as np

A=np.array([[1,4,3,2],[1,7,4,5],[2,5,3,1],[1,3,2,9]]);

print("Inverse is");

B=np.linalg.inv(A);

print(B);

print("A*A^-1=");

print(np.dot(A,B));

print("A^-1*A=");

print(np.dot(B,A));

import numpy as np

A=np.array([[4,3,2],[5,6,3],[3,5,2]]);

B=np.array([[3,-1,2,6],[7,4,1,5],[5,2,4,1]]);

X=np.dot(np.linalg.inv(A),B);

print("X=");

print(X);

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3 years ago

A2 Suggest why the Petri dish and agar jelly needed to be sterile.​

A2 Suggest why the Petri dish and agar jelly needed to be sterile.