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
atroni [7]
3 years ago
6

With advancing age, __________ become less responsive to antigens. Additionally, __________ are less responsive, and antibody le

vels do not rise as quickly after antigen exposure.
Biology
1 answer:
diamong [38]3 years ago
7 0

Answer:

1. T cells

2. B cells

Explanation:

With increased age, people become more prone to all infections and produce fewer responses for vaccines. This is due to the lowered levels of function of immune systems against the infections.

With increased age, thymus atrophy and/or hyposecretion of hormones from thymus gland result in reduced activity of T cells against infections. Less number of T cells respond to infections.

The reduced T cell production also makes the B cells less responsive. Reduced responses of B cells towards infection results in slower immune response as antibody levels do not rise quickly.

You might be interested in
All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, b
kotegsom [21]

Answer:

All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. separates contents of cell from surroundings made up of contains sugars, salts, and amino acids contains prokaryotic DNA contains eukaryotic DNA matrix?

1. Prokaryotic and eukaryotic cells both has a nucloid/nucleus, organelles, cell membrane, contains ribosomes, has cytoplasm

2. Nucleus; contains eukaryotic DNA

3; Nucloid; contains prokaryotic DNA

4; Cytoplasm; semi fluid matrix, contains sugars salt and amino acids

Explanation:

The cell from latin cella, meaning "small room" is the basic structural, functional and biological units of all known organisms. A cell is the smallest units of life and they are often called the building blocks of life the study of cell is called cytology. cells contains cytoplasm enclosed within a membrane which contains many biomolecules such as potein and nucleic acids. most plants and animal cells are only visible under a microscope with dimensions between 1 and 100 micrometers.

8 0
3 years ago
¿Por qué se denomina fenómeno complejo a la alimentación humana?
Lelu [443]

Answer:

Nutrición humana: una descripción general | Temas de ScienceDirect www.sciencedirect.com ›temas› nutrición humana

La ciencia nutricional continúa descubriendo mecanismos cada vez más complejos de cómo ... Así, la leche materna se considera un alimento completo específico de la especie (Lönnerdal, ... Si este fuera un fenómeno generalizado, podría explicar algo de la corriente.

Explanation:

6 0
3 years ago
Read 2 more answers
Please help me my test is due in a few minutes
Greeley [361]
I think it might be the second one sorry if I’m wrong
8 0
2 years ago
In the process of genetic engineering, what is the correct order of the steps? DNA separation, DNA extraction, and cutting DNA D
Veseljchak [2.6K]
Genetic engineering is applied to techniques like DNA cloning in which the steps are: step 1: DNA cutting from the parent source; step 2: DNA cut is pasted into the matrix to be modified; step 3: matrix is introduced to the host cell and step 4, vector DNA is isolated. Answer then is B. 
8 0
3 years ago
Read 2 more answers
Is carbon a renewable resource?
Mashutka [201]

Answer: No

Explanation:

7 0
3 years ago
Other questions:
  • Which of these are not examples of matter
    10·2 answers
  • What is a thin, broad and flat muscular connective tissue?<br> (Anatomy)
    10·1 answer
  • A 73-year-old client has been brought to the emergency department by the client's adult children due to abrupt and uncharacteris
    5·1 answer
  • What happens to the kinetic energy of a snowball as it rolls across the lawn and gains mass.
    8·2 answers
  • Aquatic ecosystems support more primary producers proportional to their area than terrestrial ecosystems. true or false
    9·2 answers
  • Which of the following is not a part of DNA extraction?
    15·1 answer
  • In humans, brown eye color (B) is dominant over blue eye color (b). A brown-eyed woman and a brown-eyed man mate and have a blue
    8·2 answers
  • What cellular process allows unicellular organisms to reproduce?
    11·2 answers
  • The law of
    6·2 answers
  • Describe what causes convection currents, and how they result in the movement of tectonic plates. The best answer gets brainlies
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!