Water pollutants in rivers can be removed by

Biology

1 answer:

VashaNatasha [74]3 years ago

7 0

Answer:

cleaning

Explanation:

If people would clean up after themselves, the world's rivers and lakes would be clean. Water pollutants can be somewhat easy to remove by taking the trash out of them.

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Nilai suhu reamur ke fahrenheit

balu736 [363]

Nilai suhu reamur ke fahrenheit? What is tht

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2 years ago

What clues could you use to help determine whether movement of oslutes through the apicl and basolateral cell membranes is passi

Setler79 [48]

Answer:

Clues that can be used to determine whether the movement of solutes through the membrane is passive or active could be the molecule size, membrane potential, and the presence/absence of membrane protein.

Explanation:

Solutes transport through the cellular membrane depends on the solute size, membrane potential, and the presence/absence of integral membrane protein.

There are two types of transport: Active and passive.

- Passive transport: It does not need energy; it is driven by a chemical potential gradient. Small molecules with no charge are transported through the membrane in a gradient favor, from a high concentration region to a low concentration region. There are two types of passive transport: By simple diffusion (small molecules pass through the membrane by themselves) and by facilitated diffusion (molecules are helped by integral membrane proteins to pass through the membrane). In facilitated diffusion, the helping protein can be a channel protein (hydrophilic pores that allow the molecule to pass with no interaction) or a carrier protein (proteins with mobile parts that suffer modification as the molecule pass to the other side).

- Active transport: It does need ATP energy to pass the molecule through the membrane, as they have to move against the electrochemical gradient. This kind of transport is always mediated by a carrier protein. These proteins join with the molecules and suffer changes as they pass the solute to the other side of the membrane. An important example of this kind of transport is the sodium-potassium bomb.

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3 years ago

Explain the need for ventilation systems in a multicellular organism

babunello [35]

Ventilation systems are needed in a multicellular organism to actually obtain oxygen and give out carbon dioxide. Without this ventilation system, it would be very difficult for multicellular organisms to survive. It has been also observed that surface diffusion is not enough for a multicellular organism to breath.

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3 years ago

To identify the molecule that accepts CO₂ , Calvin and Benson manipulated the carbonfixation cycle by either cutting off CO₂ or

Alexxandr [17]

To identify the molecule that accepts $CO_{2}$ , Calvin and Benson manipulated the carbon-fixation cycle by either cutting off $CO_{2}$ or cutting off light from cultures of photosynthetic algae. They then measured the concentrations of various metabolites immediately following the manipulation. The $CO_{2}$ acceptor concentration would increase when the $CO_{2}$ is cut off, but decrease when the light is cut off.

The correct option is d.

The process through which living things absorb inorganic carbon from the atmosphere and transform it into organic molecules is known as carbon fixation. These substances are employed as chemical energy storage. For life to continue, it is a necessary process.

Calvin and Benson disrupted the carbon-fixation cycle by either removing $CO_{2}$ or removing light from cultures of photosynthetic algae in order to find the molecule that takes $CO_{2}$ . Following the alteration, they evaluated the concentrations of several metabolites.

To learn more about Calvin and Benson, refer from

brainly.com/question/13711505

#SPJ4

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1 year ago

As opposed to external fertilization, internal fertilization ensures that

Vilka [71]

d. only the fittest of sperm and egg combinations will survive.

Others are external fertilization:

a. all of the sperm will fertilize eggs.
b. sperm and egg will be released simultaneously.
c. the number of sperm and eggs produced will be equal.
e. sperm will be protected until they can unite with the eggs.

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3 years ago