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
myrzilka [38]
3 years ago
9

Which of these is NOT one of the structures considered to be the immune system's first line of defense?

Biology
1 answer:
Romashka-Z-Leto [24]3 years ago
6 0

The B cells are not considered as first line defense structures of the immune’s system

Answer: Option C

<u>Explanation:</u>

Our body is protected internally by nature by many layers of defense. Any microbe or a foreign material that disturbs the body is defended by these barriers.

The first layer of defense required physical and chemical barrier such as the skin, mucous membrane, tears, saliva etc . The second line defense system involves the cells and the tissues that protect the body.

You might be interested in
What are the main functions of DNA polymerase?<br> Please help asap
pav-90 [236]

Answer:

DNA polymerase is an

enzyme that synthesizes DNA molecules

from deoxyribonucleotides, the building

blocks of DNA. These enzymes are essential

for DNA replication and usually work in pairs

to create two identical DNA strands from a

single original DNA molecule.

6 0
3 years ago
The net primary productivity for a temperate forest was measured as 2,000 mg c/m2/day. the respiratory rate of the community was
Oduvanchick [21]
The general formula for calculating the net value is this
net = gross - deductions
The deduction is the respiratory rate
The net primary productivity is given
Solving for the gross primary productivity
gross = 2000 + 1000
gross = 3000 <span>mg c/m2/day</span>
5 0
3 years ago
Which human intervention would most likely protect and maintain kit fox populations
mars1129 [50]

If humans stop hunting , stop overgrazing then the kit fox population can be protected.

Explanation:

As we know that human beings are considered as most intelligent species , so it is the duty of the human beings to protect the animals. Human can protect the animals by reduction in hunting, by planting more trees, by reducing pollution.

Previously kit fox was considered as endangered species but later in the year 1971 it was considered as threatened species as there was destruction in habitat. Due to livestock grazing ,shrubs are being destroyed as a result there is fall in prey abundance and the kit foxes suffer due to lack of food.

3 0
3 years ago
Read 2 more answers
How does technology benefit our understanding of<br> the ocean?
Cloud [144]

Answer:

Technology helps is by providing us with tools to pinpoint high and low spots in the ocean, it also helps us by giving us the tools we need to be able to search and find animals/plants in the ocean and then test them to see how they live/feed in the ocean.

3 0
3 years ago
Which best explains why metal cooking utensils often have plastic coating on their handles?
Llana [10]
Because heat travles through metal
5 0
3 years ago
Read 2 more answers
Other questions:
  • What happened as the John Travoltage moved his finger farther away from the door knob?
    13·2 answers
  • Can Adaptations can be detrimental to the survival of a species.
    15·1 answer
  • Which organ filters out urea, water, and salt as blood flows through it?
    14·1 answer
  • If a child has a disorder called trisomy 16 what is wrong with there cells​
    7·1 answer
  • Energy enters most ecosystems as sunlight. Within an ecosystem, energy is transformed, used, and exits the ecosystem as heat. Dr
    15·1 answer
  • Sister chromatids have the following features EXCEPT that: both parts have telomeres. they are homologs to each other. they rema
    9·1 answer
  • What are the three-letter “words”of mRNA
    8·2 answers
  • What are two climate feedback mechanisms that are taking place on or around the Antarctic ice shelf?
    11·2 answers
  • The macromolecule provides long term energy, insulation, and makes up the cell membrane
    12·1 answer
  • The function of some proteins is to ___________________
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!