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devlian [24]
3 years ago
11

What is a biofilm?

Biology
1 answer:
Hoochie [10]3 years ago
5 0

Answer:

A group of bacteria that accumulate in layers and secrete a protective extracellular material. (Option A)

Explanation:

Biofilm is defined as one or more types of microorganisms collectively grow in different places. Organisms that form the biofilm include protests, fungi, and bacteria.

Dental plaque is an example of a biofilm. It is a known buildup of slimy bacteria that forms on the teeth surface. Biofilm can grow on different surfaces such as animal tissues, plant tissues, minerals, metal, etc.

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How does oxygen diffuse within the lungs? a. It diffuses from the capillaries into the veins. c. It diffuses from the alveoli in
Nookie1986 [14]

The answer should be C, It diffuses from the alveoli into the blood.


Alveoli, also called the air sac, is the place where the oxygen we breathed in is exchanged with carbon dioxide that our body produces. Oxygen is passed into the blood in the capillaries through the process of diffusion, while carbon dioxide is diffused from the blood back to the alveoli, so that we can exhale the carbon dioxide after that.


Both a and b are not right because when we breathe in, the oxygen travels from the trachea to the bronchi, to the bronchiole, and to the alveoli, instead of directly into blood vessels like arteries, capillaries, or veins. d is also not right because the direction is wrong.


Therefore, your answer should be C.

4 0
3 years ago
Read 2 more answers
Why is your model useful for describing winds over the oceans but not necessarily the winds that blow over landforms, such as co
ludmilkaskok [199]

Answer:

its because the winds doesn't go to landform such as coastlines and mountains.

Explanation:

its on envisions

6 0
3 years ago
Please help im stuck on this its about rocks
vekshin1

Answer:

C. Abrasion

Explanation:

Rusting, isn't caused by friction.

Dissolving isn't caused by friction either.

Neither is exfoliation.

^^ By the process of elimination we can conclude that the answer is in fact C, abrasion! Hopefully this helps! I hope you do well!

3 0
3 years ago
Use the data to calculate the percentage remaining for samples Y and Z to the nearest tenth of a percent.
marusya05 [52]

Answer:

Y= 98, 0% , Z = 94,7 %

Explanation:

We use simple 3 rules to find the percentage of purity, using mass data:

Sample Y =

85g----100%

83,30g----X = (83,30gx 100%)/ 85g= 98, 0%

Sample Z =

95g----100%

90g----X = (90gx 100%)/ 95g= 94, 7%

5 0
3 years ago
Read 2 more answers
What is the difference between asexual and sexual reproduction? This is a Science question. PLZ HELP!!!!!!
Olegator [25]

Asexual reproduction only requires one organism. It is normally faster and that’s how organisms make more in a short amount of time. Sexual reproduction uses 2 organisms and it gives the baby more diversity so it can adapt to the environment.

4 0
3 years ago
Read 2 more answers
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