Hello there.
How many body cavity are there in human body?
Four
Answer:question, observation, experiment, analysis, prediction
Explanation:
Science involves solving problems
It start from asking question such as wHow, What, When, Who, Which, Why, or Where? is a particular case like this after which they start observing all possibilities involved, an hypothesis is formulated after which an experiment is conducted to verify the formulated hypothesis.
Results are analyse using different statistical packages, inference are draw from the result and adequate predictions are made using the analyzed result.
Conclusion is made where the hypothesis formulated is either accepted or rejected.
It is not easily recognizable
Answer: <u>B. They signal phagocytes
</u>
Explanation: Complement proteins are a part of immune system of the body. These are plasma proteins which help in the process of marking and killing the pathogens. These are not involved in the fever causing mechanism, so option D is incorrect. Also, these are not carrier proteins, and are not associated with hormones, thus option C is also incorrect. Since these proteins bind with the pathogens and make them easily recognized by the phagocytes, option B is the right answer.
