Dispatch: Week 30 Class 1 Mr. Besina

1.In 2001, 92 rabbits were born, and 60 died. 14 rabbits immigrated to the area, and 17 emigrated from the area.

Find the population growth rate in 2001.

2. Quickly sketch an exponential growth curve and a logistic growth curve. Which one has a carrying capacity? Label it.

Take an educated guess at the following questions: 3. What is “pink slime?”4. What is a “food recall?” Why are foods recalled? What foods do you

know that have been recalled?

Businesses in the food industry are responsible for keeping our food safe. It is unethical to sell food that might cause disease.

Individual consumers need to educate themselves about the dangers of consuming certain foods. It’s their own fault if they get sick.

As a consumer, I’m only concerned with the ingredients in my food, and not the HOW the food was made or processed.

Our government needs to hold food manufacturers accountable for food-related illness and death.

I would pay more for food that was labeled as healthier in some way.

Capitalism renders us helpless to change how food is produced or priced... we just have to make the choices that work for us.

Kevin's Law

Pink Slime

Ammonia Treated Beef

Our Immune System: The Good Guys

Pathogen:A disease-causing bacteria, virus, or fungus

Immune System:Protects us from pathogens.

1st Non-specific Defenses

2nd Non-specific Defenses

Immune Response (Specific Defenses)

Pathogens

We have 3 lines of defense:

1st Nonspecific Defense:Keeps all pathogens out of the body.(like a fence or wall)

1. Skin keeps all pathogens out

Pathogens enter through holes in our skin.(ex.______________________________)

2. Mucus, saliva, and tears protect these openings.

They trap pathogens and contain enzymes to kill them.

First Lineof Non-specific Defenses

Second Lineof Non-specific Defenses

Immune Response (Specific Defenses)

Pathogens

What happens if pathogens DO enter our body?

2nd Nonspecific Defense:1.Inflammatory Response-Blood vessels expand.Increases blood flow & the # of white blood cells

to infection site.WBCs eat bacteria.

2. Fever-Body temp. increases above normal to

slow down pathogen growth

First Level of Non-specific Defenses

Second Level of Non-specific Defenses

Immune Response (Specific Defenses)

Pathogens

Specific Defense (Immune Response):Antigens-

Markers found on the surface of bacteria and viruses

Antibodies-A protein that binds (sticks) to antigens.

A unique antibody is created by a different B cell.

Antigen binding sites

Once your body has made antibodies for a specific pathogen, it will be able to make them faster in the future.

You can not get sick from the same pathogen twice! You are immune, or protected.

Antibodylevels

Time

SecondexposureFirst

exposure

Vaccine-An injection of a dead or weakened virus to force your body to make antibodies

History of Vaccine:•From Latin vacca meaning “cow”•Smallpox•Edward Jenner•Noticed that milkmaids who got sick from cow pox did not get smallpox.•So he had an idea…

Cow pox

Small pox

How does all the IMMUNE SYSTEM relate to FOOD PRODUCTION?

Mastitis

Antibiotics

Antibiotic Resistance

living conditions

E. coli