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4 years ago

The majority of photosynthesis performed on the planet is done by

Biology

2 answers:

morpeh [17]4 years ago

8 0

Most of the photosynthesis that takes place on earth is done by plants which is how they make their own food

allochka39001 [22]4 years ago

6 0

The majority of photosynthesis is done by plants

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Aquaporin allows water molecules to move very rapidly across a plasma membrane. what would be the best definition of this proces

Romashka-Z-Leto [24]

This is an example of facilitated diffusion using a channel. Diffusion is the process of an object moving across a concentration gradient, usually from areas of higher to lower concentration in membranes. In this case, the diffusion is "facilitated" by the aquaporin molecules and water is allowed to enter or exit the membrane based on concentration level.

5 0

3 years ago

Which type of cells form the lining of the small intestine.

Tanya [424]

Answer:

polarized cells

Explanation:

The intestinal epithelium is lined with a single layer of polarized cells,

6 0

3 years ago

4) What is the most important chemical made during the light-independent reactions? It stores the energy that came from the sun.

Alex17521 [72]

The Calvin Cycle

Once in the mesophyll cells, CO2 diffuses into the stroma of the chloroplast, the site of light-independent reactions of photosynthesis.

7 0

3 years ago

Describe the two origins of our earth's water

VladimirAG [237]

Answer:

The new research suggests that Earth's water came from both rocky material, such as asteroids, and from the vast cloud of dust and gas remaining after the sun's formation, called the solar nebula.

Explanation:

6 0

4 years ago

This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area

sashaice [31]

Answer:- Active transport

Explanation:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from high concetration to low concentration.

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from low concentration to high concentration.

The active transport is of two types:

1. Primary active transport- in this type of transport ATP is used as an energy source to move the substances against the concentration gradient.

2.Secondary active transport - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.

The membrane proteins that are associated with active transport are called as carrier proteins. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.

5 0

3 years ago