What are two ways in which a particle that is too large to fit through the cell membrane can enter the cell?

Biology

1 answer:

mezya [45]3 years ago

3 0

Facilitated diffusion and active transport

Facilitated diffusion is the movement of large particles (that cannot otherwise move across the cell membrane) from an area of higher concentration to an area of lower concentration with the help of trans-membrane proteins.

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration using ATP energy. this may occur with large particles that cannot move across the cell membrane or small ones that can but don't due to the concentration gradient.

You might be interested in

The rungs or steps of DNA are made up of ____ which are attached to the sides or railings of DNA, which are made up of ___.

Sophie [7]

Answer: The steps are made of nitrogenous bases; deoxyribose sugars linked with phosphates.

Explanation: The rungs of the DNA are made of nitogenous bases (The nitrogenous bases are adenine (A), thymine (T), guanine (G) and cytosine (C) ) they are held together by weak hydrogen bonds.

The railings of the DNA are made of deoxyribose sugars which are alternating with phosphates. This part of the molecule is referred to as the "backbone".

3 0

3 years ago

Which of the following statements is not true?

Valentin [98]

I think A is the right answer because secondary consumers are herbivores. I am 99.9% sure about this.

7 0

3 years ago

The vertical vessels that can be seen in the image extend throughout the tree, from its roots to its leaves. Which of the follow

Andru [333]

Answer:

Taking in and transporting water and nutrients

Explanation:

5 0

3 years ago

You perform an experiment in which you take 16 pots of strawberry plants and give half of them 1 gm of ammonium nitrate per lite

svetlana [45]

Answer:

homeostasis.

Explanation:

Homeostasis is the process whereby living systems maintain a stable internal environment despite changes in environmental conditions. Plants, like every other living organisms also perform this process to keep their internal environment in a stable state.

According to the question, some plants were exposed to ammonium nitrate, which serves as a nutrient, and 16 hours of sunlight needed for photosynthesis to take place. The plants exposed to ammonium nitrate and 16 hours sunlight grew taller because they had access to nutrients needed to bring about the process of photosynthesis, which provides the plant with energy source (Glucose).

The uptake of nutrients like ammonium nitrate by the plants is done in order to maintain a homeostatic internal environment. Without nutrients, which is the purpose of the ammonium nitrate, plants cannot grow. Hence, the plants exposed to ammonium nitrate, take it in to keep their internal environment functioning.

8 0

3 years ago

How do the particles move in active transport?

ella [17]

In active transport particles move by making use of energy in the form of ATP.

Explanation:

Unlike in passive transport particles have to move against the concentration gradient in active transport. Thus particles require energy to do so and this energy is in the form of ATP. Osmosis and simple diffusion are examples of passive transport where substances move from a region of high concentration to a region of low concentration.

This movement is down the concentration gradient. In active transport particles move from a region of low concentration to a region of high concentration which is against the concentration gradient. Active transport is of two types.

In the first type called primary active transport energy is directly used in the form of ATP. In the second type called secondary active transport an electrochemical gradient created by ATP is used to facilitate the transport.

5 0

3 years ago