2 years ago

An activity that occurs in the human body is shown below.

1 answer:

7 0

according to another Brainly answer, "When some antibodies combine with antigens, they activate a cascade of nine proteins, known as complement, that have been circulating in inactive form in the blood. Complement forms a partnership with antibodies, once they have reacted with antigen, to help destroy foreign invaders and remove them from the body."

You might be interested in

Explain how a scientist can determine when a particular species of dinosaur lived on Earth.

cluponka [151]

Answer:

by fossil dna

Explanation:

it is too easy for a sciencetist

8 0

2 years ago

E. coli causes diarrhea when food infected by this bacteria is consumed. However, E.coli also aids in the digestion of food.

amm1812

Teh second statement, they can harm you but some strains are beneficial

5 0

2 years ago

The largest number of casualties for a volcanic eruption in this century is from

k0ka [10]

List of large volcanic eruptions in the 21st century
VEI Volcano (eruption). Country
2 Mount Sinabung Indonesia
4 Kelud Indonesia
3 Mount Ontake Japan
4 Calbuco Chile
23 more rows

3 0

3 years ago

Some parts of the ocean never receive sunlight. * O TRUE O FALSE

Vilka [71]

Some parts of the ocean never receive sunlight.
Answer: true

7 0

2 years ago

1.) Why does menstruation begin? 2.) How long does the menstrual cycle usually last?

skelet666 [1.2K]

Answer:

1.) Why does menstruation begin?

A.) Period happens because of changes in hormones in the body.

2.) How long does the menstrual cycle usually last?

A.) the menstrual cycle lasts 21 to 35 days while bleeding between 2 to 7 days

-TheUnknownScientist

8 0

2 years ago