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
anzhelika [568]
3 years ago
5

What is the body's first line of defense against disease?

Biology
1 answer:
KATRIN_1 [288]3 years ago
7 0

Answer:

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Explanation:

You might be interested in
The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____.
Alexeev081 [22]

Answer:

The correct option is B (natural killer cells).

Explanation:

Natural killer cells: They are defined as the type of cytotoxic lymphocyte which are critical to the innate immune system. The NK cells play an important role in to provide rapid response to tumor formation, virus infected cells, and acting after three days of infection.

While cancer cells die, they release some antigens, than these antigens are recognized by the immune system, and later they are presented on the immune cells which are known as antigen presenting cells. So, if these cells are absent than they increase the chances of developing malignant tumors.

4 0
4 years ago
Need the answer pls thx
Basile [38]

Answer: Males inherit only one X chromosome, so they show all traits on that one chromosome without another to mask them

Explanation: Males are born with XY Females are born with XX

8 0
3 years ago
the endoplasmic reticulum (er) serves as a the endoplasmic reticulum (er) serves as a protein shuffle transpiration area transpo
lutik1710 [3]

Endoplasmic reticulum serves as transpiration area. The correct option is B.

<h3>What is endoplasmic reticulum?</h3>

The endoplasmic reticulum (ER) is a large, dynamic structure in the cell that performs numerous functions such as calcium storage, protein synthesis, and lipid metabolism.

The ER's various functions are carried out by distinct domains, which include tubules, sheets, and the nuclear envelope.

The endoplasmic reticulum can be smooth or rough, and its function is generally to produce proteins that allow the rest of the cell to function.

Ribosomes, which are small, round organelles that make proteins, are found in the rough endoplasmic reticulum.

Thus, the correct option is B.

For more details regarding endoplasmic reticulum, visit:

brainly.com/question/13118914

#SPJ4

3 0
1 year ago
All of the following are sources of energy for humans during exercise EXCEPTa.stored ATP.b.alcoholic fermentation.c.lacticacid f
marshall27 [118]

Answer:Letra B

Explanation:

Fementaçã alcoo

5 0
3 years ago
True or false... A soil that gets muddy and sticky when wet contains a lot of sand? ***if false what's the correct answer***
Illusion [34]
False because soil is made of dirt

7 0
3 years ago
Read 2 more answers
Other questions:
  • Biological diversity is a term used to describe?
    15·1 answer
  • The use of _______ is expected to increase in the future.
    14·2 answers
  • What are the threadlike proteins that attach to platelets in blood clotting?
    5·2 answers
  • Will the heart model be able to function properly if the straw is blocked
    8·1 answer
  • Organisms need nutrienys in order to ?
    14·1 answer
  • List three products of respiration ..
    5·1 answer
  • Que estrutura presentes no núcleo das células carregam as características que são passadas de pais para filhos
    9·1 answer
  • A
    15·1 answer
  • Which one is not considered a limiting factor when referring to carrying capacity?
    7·1 answer
  • Please help me!!!!!!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!