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Nata [24]
3 years ago
13

What are two ways bacteria and protists can be helpful to people?

Biology
1 answer:
kotegsom [21]3 years ago
7 0

Bacteria: They are in your intestines to break down food and produce vitamin k your body needs.

Protist: Plant-like protists produce almost one-half of the oxygen on the planet through photosynthesis.

Hope this helps in some way !
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Is a type of disease caused by a single factor or has single cause​
ludmilkaskok [199]

Answer:

HIV/AIDS

HIV is a disease in the blood

nothing else

it is majorly caused through unprotected sex

there are other factors tho.

But it can be transmitted in blood transfusion

it is in the blood cells

7 0
1 year ago
Why can only certain parts of DNA be used as DNA fingerprints? A. The parts must code for the insulin protein. B. The parts must
lorasvet [3.4K]
C The parts must be unique to the person
6 0
3 years ago
Read 2 more answers
Which of the following is a type of tissue in plants that is dead at maturity?
victus00 [196]

Answer:

The correct answer will be option-B.

Explanation:

The plant tissues are composed of three types of cells: parenchyma, collenchyma and sclerenchyma.

The parenchyma and collenchyma remain alive at their maturity but sclerenchyma loses their protoplasm and become dead. These cells deposit lignin in their secondary walls and form hard tissues of the plant-like hard shell of a coconut. Sclerenchyma provides mechanical strength to the plant.

Thus, Option-B is the correct answer.

3 0
3 years ago
All the following are true of the movement of Earth's atmosphere except :
zheka24 [161]

Answer:

All  are true of the movement of Earth's atmosphere except :

d. Warm air is less dense than cool air so it tends to sink towards the Earth's Surface.

Explanation:

  • When gases heat up, their volume increases and  density decrease.
  • A decrease in density causes a substance to become lighter.
  • Thus, when air warms up due to heat from the sun its density decreases and it gets lighter.
  • So, it will move up.
  • The Cooler air in turn is denser and heavier so it will sink towards the Earth's surface.
  • Hence, the statement d , which states that 'warm air is less dense than cool air so in tends to sink towards the Earth's Surface' is FALSE.
5 0
4 years ago
Blood type is a genetically determined trait. Two siblings donate blood and find out their blood types. The brother is Type A an
rjkz [21]

Answer:

C

Explanation:

The brother has different alleles for the blood type gene than his sister does.  Blood type is inherited from parents like many other traits that can be displayed on a punnet square.  Depending on what the parents blood type alleles were, the brother and sister could have different blood types.  

A different number of chromosomes doesn't lead to different blood types, so D is wrong.  And A is incorrect because the number genes also does not affect blood type.  And I think the blood type genes are on the same chromosome, so B is wrong.  C is correct because blood type is inherited by alleles, and different alleles can cause different traits, such as blood types.  

8 0
3 years ago
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