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3 years ago

What is a good property of an indicator?

Biology

1 answer:

ValentinkaMS [17]3 years ago

5 0

Answer:

Acid base indicators are weak and acids and bases, which are used to signify the end point of neutralization reaction. The type of indicator used for a neutralization reaction depends on the strength of the acid and the base, that are involved in the reaction. A good acid base indicator must have a good pH range and it must be able to produce specific and identifiable color in specific acid base medium.

Two good properties of an indicator are as follows-

1) It should be specific- It means that the changes, which are measured by the indicator should be expressed in precise terms so that appropriate assessment could be made.

2) It should be time bound- This means that the measurable changes should arrive withing a particular time limit.

Example of indicator- Litmus is an acid base indicator that turns acidic solutions red and basic solutions into blue color.

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When blood clots, an enzyme is activated to change a protein from one form into another.

exis [7]

Answer:

Hey mate!!

<h2>Process of blood-clotting</h2>

The mechanism to prevent excessive loss of blood from the body is called blood clotting.

<h3>Steps in blood clotting:</h3>

At the site of cut, damaged cells and platelets release thromboplastin.
This thromboplastin with the help of calcium ions,converts prothrombin into thrombin.
In the presence of calcium ions,thrombin reacts with soluble fibrinogen and converts it into insoluble fibrin.
Fibrin is a solid substance which forms threads and a meshwork at the site of cut.
Blood cells trapped in the network of fibrin.The blood shrinks and squeezes out the rest of plasma in the form of clear liquid.
The solid mass which is left behind is called clot.

Hope this helps ......

Good luck on your assignment....

8 0

3 years ago

What struggles do aquatic organisms have that terrestrial ones do not?

marissa [1.9K]

Answer:

Aquatic animals can be found in water habitats, which can be either fresh or marine. Terrestrial animals can be found exclusively in the land. Aquatic animals respire through gills or their skin. ... The main difference between aquatic and terrestrial animals is their habitat and modes of living

Explanation:

8 0

3 years ago

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What happens to a stimulus after the body receives it?

deff fn [24]

When a stimulus is produced it signifies the production of sensation in the sensory organs. This sensation through the sensory organs (eyes, ears, nose, skin and tongue) is sent to the sensory nerve connected to these sense organs. These sensory nerves send nerve impulses through the nerve fiber to the spinal cord. From the spinal cord the nerve impulse is transferred to motor nerves.

The motor nerve then sends response to the stimulus though the same path to the region from which stimulus was received and thus the body responds through muscular activity. Such as removal of heat from the heated object if heated sensations were received.

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4 years ago

The enzyme that unwinds that double stranded DNA at the beginning of DNA replication is called. A. Primase. B. DNA polymerase. C

JulsSmile [24]

Answer:

The correct option is D. Helicase is the enzyme that unwinds that double stranded DNA at the beginning of DNA replication.

Explanation:

DNA replication can be described as a process by which the strand of DNA gets duplicated into two new daughter strands.

Helicases can be described as the enzymes whose main function is to unwind the double helix structure of the DNA. The helicases break the hydrogen bonds present between the two strands of DNA. The helicases are the first machinery for DNA replication as they form the replication fork and begin unwinding of the DNA from the origin of replication

6 0

4 years ago

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PLEASE HELP ME WITH THIS QUESTION

atroni [7]

Answer:

1 and 4

Explanation:

simply due to process if an elinination so if u get another answer thats different and has an explanation believe them instead

6 0

3 years ago

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