1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
rosijanka [135]
3 years ago
11

Age-associated changes in the immune system, also known as _______________________, are thought to be responsible for the increa

se in infections and cancer as adults age.
Biology
1 answer:
wariber [46]3 years ago
5 0

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.
You might be interested in
Can you please help me with this?
ruslelena [56]
The aquifer must be permeable and porous to allow the water to flow through.
5 0
2 years ago
PLEASE HELP ASAP !!! Like many multicellular organisms, plants have organs that perform specific functions. Which of the followi
Sav [38]

Answer:

Its A, the roots of plants absorb the water used in the process of photosynthesis

Explanation:

<u>Really hope this helps <3</u>

4 0
3 years ago
Read 2 more answers
Which term(s) in the van deemter equation does(do) not affect the plate height?
Andru [333]
In the van deemter equation, plate height (H) = A + B/u+ Cu.
So, A, B, U, and C affects the plate height. A is the eddy diffusion term, B is the longitudinal or ordinary diffusion term, C is the nonequilibrium or resistance to mass transfer coefficient, and U is the linear velocity.
7 0
3 years ago
Part B: Simulate Deforestation Next, you’ll build a simulation showing the changes in a portion of the forest over time. This sa
Olegator [25]

Answer:

Explanation:

Download pdf
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> pdf </span>
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> pdf </span>
5 0
3 years ago
What type of reproduction do ferns use
Elena-2011 [213]

They both use a reproductive strategy called alternation of generations, where there are two different reproducing morphologies: a diploid sporophyte, and a haplod gametophyte. The sporophyte produces spores by meiosis (2N -> N), which disperse and form the gametophyte, which produces gametes by mitosis (N ->N). Two of those gametes fuse to create a diplod zygote (N + N -> 2N), which becomes the new sporophyte

There are differences between the two types of plants, especially the relative size of the sporophytes and gametophytes, but they both use this kind of reproductive strategy.

4 0
3 years ago
Other questions:
  • True or false scientists have learned about alien life through studying meteorites
    5·2 answers
  • A 1:1:1:1 ratio of offspring from a dihybrid testcross indicates that ___________.
    10·1 answer
  • Viruses can infect bacteria as well as other organisms. What does the virus inject into the bacterial cell?
    14·2 answers
  • WILL GIVE YOU BRAINLIEST!!
    9·1 answer
  • Caffeine aids in the movement of calcium ions across cell membranes by both making it easier for the Ca2+ channels to open and b
    6·1 answer
  • What's an area of high pressure where air moves apart and sinks
    9·1 answer
  • How does blood get around the body from the heart? What pieces of the heart does the blood go through?
    13·2 answers
  • Which way does solute tend to move during diffusion?
    6·1 answer
  • Describe 1 attribute of a highland climate
    13·1 answer
  • 1What is the literal meaning of disease 2What is an acute disease ? 3What is a chronic disease ?​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!