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kodGreya [7K]
3 years ago
14

Describe two ways the immune system works.

Biology
1 answer:
jeka943 years ago
3 0

The immune system is made up of a network of cells, tissues, and organs that work together to protect the body. One of the important cells involved are white blood cells, also called leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.

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What is the diligent search for an answer or a solution to a problem called?
frez [133]

Answer:

Research

Explanation:

Research is a deliberate attempt to find answer or solution to a problem along with help of observation, study, survey, comparison, literature review and experimentation.  

It is in other way a search for knowledge through systematic way of finding solutions to a problem.  

The research methodology comprises of following stages –  

Stage  I – Observing a problem

Stage II – Formulating a hypothesis

Stage III – Collecting the data

Stage IV – Analysis of facts and data

Stage V – Finding a solution or reaching a conclusion

8 0
4 years ago
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How would you test the presence of starch in leaves?
Lesechka [4]

Answer:

1. Remove a green leaf from the plant

2. Boil the leaf in boiling <u>water stop enzymatic reaction within cells in leaf</u>

3. Put the boiled leaf in boiling tube containing alcohol <u>extract (ethanol) chlorophyll ethanol dissolves Lipids in cell membranes.</u>

4. Return to leave to the hot water <u>soften the leaf and allows penetration of </u><u> </u><u>i</u><u>odine</u>

5. Remove leaf and perform the iodine test

Explanation:

<em>starch is white powdery substance consisting of glucose which is used by plants as food the percents of starch in leaves evidence enough of the process a photosynthesis being carried out in leaves as the formation of starch necessitates photosynthesis</em>.

I hope this helps :)

4 0
4 years ago
The mucous membrane that lines the eyelids and is reflected over the anterior surface of the eyeball is the conjunctiva. The muc
hichkok12 [17]

Answer:

True

Explanation:

Conjuctiva is that thin transparent mucous membrane that covers both the anterior surface and the inner surface of the eyelid. Conjuctiva is an important component of the eye that keeps the inner surface of the eyelids and the front surface of the eye moist and lubricated. It also helps protect the eye from foreign particles and from infection.

The part of the conjunctiva that covers the eyelids and is reflected over the anterior surface of the eyeball is called the bulbar conjunctiva. The part that is found coating the inner surfaces of the eyelids is called the palpebral conjunctiva.

7 0
3 years ago
What two things are needed for cellular respiration
Tema [17]
Glucose and water are needed for cellular respiration. Carbon Dioxide and water are just products of cellular respiration.
8 0
3 years ago
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