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
konstantin123 [22]
4 years ago
5

What is the human body's first line of defense against invading pathogens such as bacteria and viruses?

Chemistry
1 answer:
Sedbober [7]4 years ago
3 0
ANTI---------- BODIES!!!!!!!
You might be interested in
quizlet nitrogen can have variable number of nuetrons(isotopes) it can also have varible number of electrons ehile becomon an io
mafiozo [28]

Nitrogen has 7 protons, 7 neutrons, and 7 electrons.

Seven protons, seven neutrons, and seven electrons make up nitrogen-14.

Utilize the atomic number and mass number of an atom to determine the number of subatomic particles it contains: Atomic number Equals proton count. Electron count equals atomic number. Atomic number - mass number equals the number of neutrons.

Seven protons, seven neutrons, and seven electrons make up the atom of nitrogen. The nucleus is the collection of protons and neutrons that make up the center of an atom. The 7 electrons, which are much smaller than the nucleus, orbit it in what is known as orbits. Since nitrogen-14 is a neutral atom, the number of protons in its nucleus must match the number of electrons around it.

Learn more about atomic numbers at brainly.com/question/2942556

#SPJ4.

6 0
1 year ago
Which of these is an acid A(Vinegar
ololo11 [35]
Vinegar is the only thing listed
8 0
3 years ago
The hot dogs you ate at the barbecue last week were 75% fat-free by weight, had 275 calories, and weighed 110 g. a) What percent
vovangra [49]

Answer:

a) 25%

b) 27.5 g

c) 90%

Explanation:

a) 75% fat-free by weight means 25% of the weight is made by fat.

b) 110 g ___ 100%

      x    ___ 25%

          x = 27.5g

Each hot dog has 27.5g of fat.

c) 9 cal ___ 1 g fat

      y    ___ 27.5 g fat

          y = 247.5 cal

275 cal ___ 100%

247.5 cal ___ z

     z = 90%

90 % of the calories come from fat.

6 0
3 years ago
Please help with this lab !
vekshin1
To get out the iron filings put everything in to a container and then put the magnet to the side to attract them. Pull them out of the container. Then, I don’t know how to separate the sand and salt. Maybe evaporate the salt? I joke you can figure it out. Best of luck! :)
4 0
3 years ago
Is it called when a substance enters a gaseous phase without boiling?
Helen [10]

Answer:

its called sublimation

3 0
3 years ago
Read 2 more answers
Other questions:
  • someone pls help thanks - Calculate the total energy in the 1.5x10^13 photons of gamma radiation having wavelength of 3.0x10^-12
    8·2 answers
  • How many grams of HNO3 are produced when 60.0 g of NO2 completely reacts?
    5·1 answer
  • Combustion of hydrocarbons such as nonane () produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosp
    8·1 answer
  • Which is a positively charged particle in an atom’s nucleus?
    8·2 answers
  • When the following two solutions are mixed:
    12·2 answers
  • Which of the following would have the highest buffer capacity?
    10·1 answer
  • What is a polysome??​
    6·2 answers
  • What is the combining number of lead?
    11·1 answer
  • The following pieces of evidence were found at separate explosion sites. For each item, indicate whether the explosion was more
    10·1 answer
  • According to the article, elements are named by the number of protons in the nuclei.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!