Mouths are quiet. Homework in your folder. Begin the quick review section of your notes. Raise your hand if you need something.

Quick Review chloroplast mitochondria Fill in the missing information in each statement below. 1. A is indicated by letter B. Its function is to produce glucose by photosynthesis. 2. A is indicated by letter F. Its function is to break down glucose, producing ATP. 3. Letter D shows the cell wall. Its function is to support and protect the cell. chloroplast mitochondria

Quick Review 4. Letter E shows the Golgi apparatus. Its function is to package proteins in vesicles to be sent out of the cell. 5. Letter A shows the nucleus. Its function is to control the actions of the cell. It contains DNA. 6. This cell would be classified as a eukaryotic plant cell.

Life and Disease Lesson 4.13 – Parasites

I can describe how parasites infect the human body. (3c) 1. Parasites a. A eukaryotic organism which lives in or on the body of a human. b. They obtain resources from humans and cause harm to this host. Tick Tapeworm SEM

I can describe how parasites infect the human body. (3c) 2. Malaria a. Caused by unicellular organism named Plasmodium. b. This organism is carried by a mosquito and enters the bloodstream of a human when bit by the mosquito. c. The parasite infects the blood and destroys blood cells. This causes high fevers, shaking chills, flu-like symptoms.

I can describe how parasites infect the human body. (3c) d. If a mosquito bites an infected person, the parasite can be transmitted to other people the mosquito bites afterward. e. Found in tropical areas. There were 225 million cases with 781,000 deaths, mainly in Africa. Eradicated from the U.S. in 1951.

I can describe how parasites infect the human body. (3c) 3. Worms a. Multicellular organisms which live inside of a host. Usually live in the digestive tract (called intestinal worms). b. Get nutrients and protection from the host but stop the host from absorbing nutrients causing weakness. c. Humans get parasitic worms by ingesting the worm’s eggs usually through drinking water or eating food contaminated with feces. Parasitic nematode worms being held by a laboratory technician. These are Ascaris lumbricoides worms, from the intestines of a child in Kenya. This nematode worm parasitizes the human small intestine. Fertile eggs are passed in the faeces. When swallowed, the larvae hatch from the eggs, invade the intestinal mucosa, and are carried in the blood to the lungs. The larvae mature in the lungs, then ascend the bronchial tree to reach the throat. There, they are swallowed. Upon reaching the small intestine, they develop into adult worms, completing the life cycle. Pinworm. Endoscope image of a pinworm (Enterobius vermicularis, centre left) in a human colon. This intestinal parasite is a ringworm found in both temperate and tropical regions. The female pinworm lays eggs in the perianal region, and the eggs and larvae are transmitted from person to person by unwashed hands or bedclothes. This condition can be treated with antihelminthic drugs.

I can describe how parasites infect the human body. (3c) 4. Ticks a. Burrow into the skin and feed on blood. Can carry bacteria that causes Lyme Disease. 5. Lice a. Live on the outside of the human body, specifically in hair, and feed on skin and blood. Causes itching and can carry other diseases. Tick Lyme Disease Bacteria “Bullseye” rash characteristic of Lyme disease. If not treated, it begins to affect the heart muscle and nervous system. Joints also begin swelling.

WORK WITH US…NOT AHEAD OF US! Guided Practice WORK WITH US…NOT AHEAD OF US!

What pathogen caused these symptoms? I can describe how parasites infect the human body. (3c) 1. A person has been traveling through South America and suddenly becomes very ill. He has a high fever and thinks he may have the flu. A doctor takes a blood sample and notices that his blood cells are ruptured. What pathogen caused these symptoms? This patient most likely has malaria, a parasite, because he has traveled in tropical areas, his blood cells are breaking, and he has the symptoms. If the patient wants to avoid transmitting this illness to others, what should he avoid? He should avoid mosquitos. If one bites him, it could transmit the Plasmodium parasite to other people.

What pathogen is likely causing these symptoms? I can describe how parasites infect the human body. (3c) 2. A small child is not gaining weight as she grows even though she is eating an adequate amount of food. What pathogen is likely causing these symptoms? An intestinal worm, a type of parasite, is causing these symptoms. It is living in her intestines and taking in the nutrients that she should be getting, causing her to loose weigh.  What should he do in the future to avoid having this problem again? She should be sure to wash her hands regularly and should make sure she is eating food that has been cooked thoroughly and drinking clean water.

I-N-D-E-P-E-N-D-E-N-T PRACTICE Do you know what that means?

Exit Ticket (5 Questions)

1. Which of these would not be considered a parasite? Deer tick Ringworm Plasmodium Tapeworm B

2. Which of these correctly classifies parasites? Prokaryote with many organelles Prokaryote with no membrane bound structures Eukaryotic cells with many organelles. Eukaryotic cells with no membrane bound organelles. C

3. Which of these people would be the most likely to get a parasite? A 19 year old male that washes his hands regularly. A 39 year old mother of three that eats fully cooked foods. A 32 year old single male living in the northern United States. A 12 year old child living in a tropical area. D

Viral infection, antiviral medication such as Tamiflu 4. A high school aged female volleyball player comes to the doctor’s office with a red rash and peeling skin on her left foot. Which of these would be the doctor’s diagnosis and treatment? Viral infection, antiviral medication such as Tamiflu Bacterial infection, antibiotic medication such as Ciprofloxacin Fungal infection, several days without using soap and damp sock treatment Fungal infection, antifungal cream such as Lamasil D

Wearing shower shoes in the locker room 5. For the patient described in question #4, which of these would NOT be a way she could avoid this issue in the future. Wearing shower shoes in the locker room Washing her socks after each use Wearing damp shoes whenever possible. Washing her feet with soap while showering. C