BIOLOGY HIGH SCHOOL

All of the following are ways that neutrophils can directly or indirectly kill cells except __________.

Answers

Answer 1
Answer:

Answer:

MACs, or membrane attack complexes, are used in the complement system.

Explanation:

Hope this helped

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Which of the following is a consequence of water polluted by human sewage? a. pathogens
b. disease vectors
c. high levels of contaminants
d. all of the above

Answers

Answer;

-All of the above

-pathogens, disease vectors, and high levels of contaminants

Explanation;

Water pollution is a large set of adverse effects upon water bodies (lakes, rivers, oceans, groundwater) caused by human activities. Water pollution is caused by;

  • Increases in nutrient loading may lead to eutrophication.
  • Organic wastes such as sewage and farm waste impose high oxygen demands on the receiving water leading to oxygen depletion with potentially severe impacts on the whole eco-system.
  • Industries discharge a variety of pollutants in their wastewater including heavy metals, organic toxins, oils, nutrients, and solids.
  • Discharges can also have thermal effects, especially those from power stations, and these too reduce the available oxygen.
D. all of the above. I'm pretty sure

What function do chloroplasts perform?

Answers

Chloroplastswork to convert light energy of the Sun into sugars that can be used by cells.
Work to convert light energy of the Sun into sugars that can be used by cells.

Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem. Please select the best answer from the choices provideda. True
b. False

Answers

The correct answer is true. Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem. Mining is one cause of destroying the ecosystem of a place and in order to restore the balance in that place after the mining ceases one way is to reclaim that place.
The answer is true, hope this helped

Which level of organization is represented by a bone in our body?tissue
cellular
organ
system

Answers

A bone is tissue. It forms a part of the skeletal system which is made up bones, joints, ligaments and cartilage.Cells work together in groups known as tissues. A tissue is defined as a group of similar cells working together to carry out a certain task. Examples are skin, bone, blood.Tissues in turn are grouped together to form organs. An organ is defined as a group of tissues that work together to carry out a certain task . Examples are heart, lungs, liver.

Answer:a) Tissue

Explanation: even though it looks hard, the bone  is still a tissue along with ligaments and cartilage

Which pairings match protozoa with the structures they use to move? amoeba: flagellum; euglena: cilia; paramecium: pseudopod amoeba: pseudopod; euglena: flagellum; paramecium: cilia amoeba: flagellum; euglena: pseudopod; paramecium: cilia amoeba: pseudopod; euglena: cilia; paramecium: flagellum

Answers

Answer:

The correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

Explanation:

Protists use different type of structures for their movement known as pseudopods, flagella, and cillia.

Pseudopods are the structures found in amoeba in which flowing of protoplasm moves the amoeba forward.

A euglena moves by strikes or whip its flagellum, that is a long appendages, like propeller of a helicopter.

Cilia are thin, very small tail-like structure that stretched outward from the of body of paramecium.

Thus, the correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

2. The form of oxygen that combines three oxygen atoms into each molecule is called?

Answers

the answer is the ozone 

OZONE >>>>>>>>>>>>>>>>>>>>
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