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3 years ago

What produce proteins by following codes instructions that come from the nucleus of the cell

1 answer:

6 0

Answer:mRNA transcribed in the nucleus of the cell travels out to the cytoplasm where it joins a ribosome and follows the code instructions to build amino acids which are strung together to create proteins.

Explanation:

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Sort the phrases into the appropriate bins depending on whether they are true only for channels, true only for carrier proteins,

ehidna [41]

<h2>The correct answer is explained below:</h2>

Explanation:

The Plasma membrane of a cell is made up of a phospholipid bilayer which has a hydrophobic core and hence is impermeable to water soluble or polar organic and inorganic molecules.
However, a cell can maintain proper homeostsis and undergo metabolism only when it is able to exchange different hydrophilic and polar organic and inorganic chemical components present inside the cell with those present outside the cell.
This necessitates the development of a "path" that could connect the cell interior to the cell exterior.
The path is developed by integral membrane protein that spans across the lipid bilayer opening on either side of the membrane, thereby connecting the cell interior with the cell exterior.
These integral membrane proteins are amphipathic in nature, that is, they are composed of both polar and non-polar amino acid residues. The amino acid residues are arranged such that the non polar amino acid residues face and undergo hydrophobic interactions with the water avoiding lipid molecules in the plasma membrane. The polar amino acid residues face towards the lumen of the opening in between the cell interior and exterior such that they can form hydrogen bonding with the water soluble polar organic or inorganic molecules and help them traverse the plasma membrane.
These integral membrane proteins are of two types: Channel proteins and Carrier proteins.
The Channel proteins:

Form a direct and continuous opening across the plasma membrane. They can either remain always open or can be gated, that is, they open only on associating with specific signalling molecules.
They transport solutes from a region of high electrical charge or concentration to a region of low electrical charge or concentration, that is, down the electrochemical or concentration gradient.
They usually allow the easy and quick transport of water molecules and small ions across the membrane.

The Carrier proteins:

They undergo a change in their conformation to translocate solute molecules across the plasma membrane and they do not form a continuous opening.
When they open on one side of the membrane they are closed on the other side. They cannot remain, simultaneously, open on both sides of the membrane.
They are required mainly for the translocation of small polar organic molecules across the plasma membrane down the electrochemical or concentration gradient.

For channels only:

For carrier proteins only:

For channels as well as carrier proteins both:

4 0

4 years ago

Organisms can be classified as living as long as they have most of the characteristics of life, true or false?

Ket [755]

Answer:

true

Explanation:

eight characteristics

Fortunately, biologists have developed a list of eight characteristics shared by all living things. Characteristics are traits or qualities. Those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution

<h2>mark me brainliest please</h2>

5 0

3 years ago

A researcher hypothesizes that a new club can improve a person's golf score. Which of these would most likely be the dependent v

Aleonysh [2.5K]

The answer is B. To find this, you need to know what a dependent variable is. A dependent variable is something that has changed due to the result of an independent variable. An independent variable is something that is being changed in an experiment. So in other words, the dependent variable is the result of what is being changed in the experiment. They will change the club of the participants (independent variable) and will see if this changes their score (dependent variable).

5 0

4 years ago

How are cells, tissues, and organs related?? ;>;

xeze [42]

Answer: cells make up tissue, tissues make up organs.

3 0

3 years ago

Mediated transport of polar molecules and ions across the plasma membrane utilizes a(n) _____ carrier that binds to the substanc

agasfer [191]

The question is incomplete as it does not have the options which are:

Protein carrier

Lipid carrier

Porin carrier

All of the choices are correct

Answer:

Protein carrier

Explanation:

The transport of molecules through diffusion can be passive or facilitated. The facilitated diffusion in which the molecules are facilitated to cross required tow type of protein channels which are the channel proteins and the carrier proteins.

The carrier proteins are the transmembrane proteins which are specific for ions and to transport the molecules change their shape of conformation. The change in the shape is responsible for the release of ions on the other side of the membrane.

Thus, Protein carrier is correct.

4 0

3 years ago