E. Coli is a bacterium that lives in the gut of humans. The human provides the ideal habitat for e coli reproduction and the e coli provides the extra vitamin K that we use. Group of answer choices

Parasitism

Predation (Predator-Prey)

Mutualism

Commensalism​

Explanation:

E. coli and other species of bacteria found in your intestines help your body do what?

A. Break down fats

B. Make vitamin K and B-complex vitamins

C. Absorb oxygen

D. Move waste material through the intestines

2. E. coli and other intestinal bacteria have what kind of relationship with you?

A. Parasitic

B. Symbiotic

C. Nosotropic

D. Synergistic

3. If E. coli is a helpful bacterium, what happens to it to make you sick?

A. The bacterium enters the bloodstream by accident

B. You pick up a different strain of E. coli

C. Too many bacteria build up in the intestine

D. A and B

4. Where is the strain E. coli 0157 found?

A. Only in animal waste

B. Only in contaminated water

C. Only in moldy or rotten food

D. Everywhere

5. In what kinds of food has the strain E. coli 0157 been found?

A. Undercooked hamburger

B. Alfalfa sprouts

C. Unpasteurized fruit juice

D. All of the above

6. What does the strain E. coli 0157 do to the body?

A. It harms the lungs

B. It harms the heart

C. It harms the intestines and in some cases the kidneys

D. It harms the eyes

7. Who is most vulnerable to E. coli 0157 infection?

A. Women of childbearing age

B. Young children

C. Elderly adults

D. B and C

8. What are symptoms of E. coli 0157 infection?

A. Severe abdominal cramping

B. Bloody diarrhea

C. Headache

D. A and B

9. How is E. coli 0157 infection treated?

A. Antibiotics

B. Steroids

C. Surgery

D. None of the above

10. What can you do to prevent E. coli 0157 infection?

A. Clean cutting surfaces that have come in contact with raw meat

B. Wash your hands after handling raw meat

C. Cook meat until the juices run clear

D. All of the above

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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b. the carbon cycle ensures living things have a source of hydrogen