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expeople1 [14]
3 years ago
11

Question 1(Multiple Choice Worth 4 points)

Biology
2 answers:
Ivan3 years ago
8 0
An example of an endothermic process is Boiling. 
An endothermic reaction is any chemical reaction that absorbs heat from its environment. Boiling is a course by which a liquid changes into a vapor when it is heated to its boiling point. The shift from a liquid phase to a gaseous phase happens when the vapor pressure of the liquid is of the same level to the atmospheric pressure exerted on the liquid.
zhannawk [14.2K]3 years ago
5 0
<span>From the following,an example of an endothermic process is boiling. Endothermic process is when the heat is absorb by a matter that causes it to increase its heat energy. A great example of this is melting in which the heat from the outside will be absorb in the ice causing it to melt.</span>
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Age-associated changes in the immune system, also known as _______________________, are thought to be responsible for the increa
wariber [46]

Answer:

The correct answer is: Immunosenescence.

Explanation:

  • Immunosenescence can be defined as a biological age-related phenomenon due to which the cells of the immune system are unable to function efficiently with increase in age.
  • As a result of this the aged individuals becomes susceptible to various infections and diseases.
  • This happens because of the following reasons:
  1. The immune cells are formed from the progenitor cells called the Hematopoetic Stem Cells (HSCs) which are abundantly found in the bone marrow. These cells have the capacity of self-renewal and also differentiation into various types of immune cells. Due to aging, these cells accumulate large number of Reactive Oxygen Species (ROS) that that causes oxidative damage to the DNA. Also, with age the telomere (the repititive DNA sequence located at the chromosome terminal that protects the end of the chromosome from undergoing recombination or fusion with other chromosomes) length shortens resulting in the generation of damage in DNA. All these reduces the self renewal and differentiation capacity of these cells.
  2. Other cells of the immune system like, the white blood cells, anti-body producing B-cells, cytotoxicity inducing T-cells, natural killer cells also accumulate similar DNA degrading components. This reduces their life time and also the efficiency of their activity.
5 0
3 years ago
Which cell structures cause the outer surface of the rough endoplasmic reticulum to appear rough
Elden [556K]
These structures are known as Ribosomes.
5 0
3 years ago
How about this who knows this
Dvinal [7]

Answer:

yep it should be sweating

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5 0
3 years ago
Read 2 more answers
Please help im stuck on this its about rocks
vekshin1

Answer:

C. Abrasion

Explanation:

Rusting, isn't caused by friction.

Dissolving isn't caused by friction either.

Neither is exfoliation.

^^ By the process of elimination we can conclude that the answer is in fact C, abrasion! Hopefully this helps! I hope you do well!

3 0
2 years ago
EASY BIO QUESTION
lozanna [386]
I would say hydrophilic molecules that provide energy for the body. Hope it helps!
4 0
3 years ago
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