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Andreyy89
3 years ago
9

which tool enhances a scientist’s senses? a microscope a calculator a test tube a stirring stick

Biology
2 answers:
Evgesh-ka [11]3 years ago
7 0

The right aswer is a microscope.

The microscope is an optical instrument that makes it possible to examine objects or elements invisible or difficult to see with the naked eye, thanks to a lens.

Subsequently, the tool evolved, in terms of its shape and its lenses: in 1667, Robert Hooke realizes the first complete model as we know it: composed of a table, a system of development and a condenser light, the device will be used to discover the cell.

VLD [36.1K]3 years ago
6 0
Microscope, hope this helped.
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coldgirl [10]
For the answer to the question above, I believe the answer is <span>A. vaccine helps the body develop memory cells that make immunity last, whereas injection of antibodies only produces a temporary immunity.

I hope my answer helped you. Have a nice day!
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4 0
3 years ago
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Who devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations?.
Dominik [7]

Landsteiner Bertillon devised a technique for determining the blood group of a dried bloodstain, which he applied to criminal investigations.

<h3>What about blood group?</h3>
  • According to the presence or absence of antibodies and hereditary antigenic compounds on the surface of red blood cells, blood is classified according to its type.
  • Depending on the blood group system, these antigens could be proteins, carbohydrates, glycoproteins, or glycolipids.
  • The genes that a person got from their parents determine what blood type they have.
  • There are numerous systems for classifying blood types, but ABO is the most popular one.
  • The ABO group is divided into four main categories: A, B, O, and AB.
  • There are eight more blood types within these groupings.
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Learn more about blood group here:

brainly.com/question/15289194

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6 0
1 year ago
Pls help ill give brainkliest and 5 stars
rewona [7]

Picture 1 depicts convergent boundary.

Picture 2 depicts divergent boundary.

Picture 3 depicts transform boundary.

<h3>What is a Divergent boundary?</h3>

This occurs when two tectonic plates move away from each other while convergent boundary occurs when the plates collide with each other.

Transform boundary is a fault along a plate boundary where the motion is mostly horizontal.

Read more about Divergent boundary here brainly.com/question/8866854

4 0
2 years ago
A response that is uniquely directed against pathogenic bordetella pertussis would involve what component?
xxMikexx [17]

Answer:

Antibodies

Explanation:

Bordetella pertussis is an obligate human pathogen and is the etiological agent of whooping cough. It is known to be an opportunistic organism.

The pathogenic mechanism of Bordetella pertussis is also known as virulence factor. These virulence factors are known to include adhesins such as filamentous haemagglutinin, fimbriae and pertactin, which allow B. pertussis to bind to ciliated epithelial cells in the upper respiratory tract.

It is known to be the agent of whooping cough, a highly contagious respiratory disease, dramatic for infants and also for elderly and pregnant women.

In this case, the antibodies will be the response that is uniquely directed against the organism. It is said earlier that this organism is an opportunistic one, this means that it causes infection when the immunity is down. So, when the immunity is empowered , it will definitely fight against the organism

3 0
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Tell me everything about cell theory
Dafna11 [192]

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4 0
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