Answers with Explanation:
1. Which many-celled organisms are capable of causing diseases in humans?
Multi-cellular parasites like "helminths" and "arthropods." Helminths are regarded as<em> "parasitic worms.</em>" It is a tropical infectious disease that has been a burden to many nations. They commonly live in the GI (gastrointestinal) tract of their hosts. Arthropods are ectoparasites that, generally, live on the skin of their hosts. Some of them even burrow in dermal tissues which causes skin trauma or inflammation. Examples of these are fleas, flies and lice.
2. Tapeworms and lice are examples of parasites that can cause diseases in humans.
Tapeworms are considered<em> flat, segmented worms that live in the human's GI tract.</em> It is a type of helminth. Once it is able to live in its host, it causes<em> weakness, nausea, fatigue, weight loss, abdominal pain, diarrhea, etc. </em>Lice (as mentioned above) is a type of arthropod that feeds on blood. There are three types of lice: head lice, body lice and pubic lice. Symptoms are <em>intense itching, tickling feeling </em>and<em> small red bumps.</em>
Answer:
blood vessels dilate allowing more oxygen to be inhaled
Explanation:
To make sure its not to hard for you and that you will enjoy it.
Answer:
The correct answer is C. hormones
Explanation:
Sebaceous gland called oil glands are present in the skin which at the time of puberty cause higher sebum production which cause acne. So at the time of puberty hormonal change occurs and androgen level like testosterone level becomes high in the body.
This high level of androgen cause rise in the production of sebum from sebaceous glands and cause inflammation in that region and allow the colonization of bacteria like <em>Propionibacterium acnes</em> which results in the formation of acne. So hormonal change cause acne therefore the right answer is C.
