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sleet_krkn [62]
2 years ago
13

Indicate which statements are true of proteins. Select all that apply. Multiple select question. They act as receptors on cells'

surfaces. They catalyze chemical reactions. They make up molecules that can transport oxygen. They make up one of the subunits, or building blocks, of triglycerides. They carry the instructions that control a cell's activities.
Biology
1 answer:
il63 [147K]2 years ago
8 0

Answer:

React on cell surfaces, catalyze reactions.

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The tube that connects the throat and bronchi? <br><br> helppp
lapo4ka [179]

Answer:

trachea

Explanation:

it is a tube that connects troat and bronch

6 0
2 years ago
Identify how the physical barriers of the the immune system protect the body against pathogens
BabaBlast [244]

Answer:

They help to stop harmful germs from entering the body

Explanation:

  • The skin can prevent bacteria and microorganisms from entering the body (unless it is damaged)
  • Mucous membranes line the mouth and nose and are coated with secretions that fight microorganisms and harmful bacteria
  • Tears help to clear debris from the eye to prevent infection
7 0
3 years ago
1) Can u say why your parents insist that you should eat Regularly ? ​
mart [117]

Explanation:

Food gives us energy and builds our body. If we do not eat regularly, we will become weak.

5 0
2 years ago
Read 2 more answers
Cite the three main types of RNA and describe briefly the function of each.
sveticcg [70]

Answer:

mRNA: Carry genetic information from DNA to protein; serve as template for protein synthesis.

tRNA: Serves as adapter molecule and deliver specific amino acid from the cell pool to the mRNA-ribosome complex.

rRNA: Structural component of ribosomes.

Explanation:

There are three types of nongenetic RNAs: mRNA, tRNA, and rRNA.  

1. The messenger RNA (mRNA) is formed by the process of transcription in the nucleus. Transcription uses template strand of DNA to specify the nucleotide sequence in mRNA. The mRNA enters cytoplasm to join ribosomes. The nucleotide sequence of mRNA serves as a template and specifies the amino acid sequence of proteins.  

2. The transfer RNA (tRNA) serves as an adapter molecule during the process of protein synthesis and binds to the specific amino acids to deliver them to the protein-synthesizing machinery. The anticodon of tRNA binds to the complementary mRNA codons.  

3. The ribosomal RNA (rRNA) serves as structural components for ribosomes. Each of the subunits of ribosomes is made up of rRNA and proteins.  

8 0
3 years ago
In a membrane, the________of the phospholipids in one monolayer face the________of the phospholipids in the other monolayer.
matrenka [14]

In a membrane, the tail of the phospholipids in one monolayer face the tail of the phospholipids in the other monolayer.

<h3>What is cell membrane?</h3>
  • The cell membrane is a biological membrane that separates and protects the inside of all cells from the outside environment.
  • It is also known as the plasma membrane (PM), cytoplasmic membrane or plasmalemma (extracellular space).
  • The cell membrane consists of a lipid bilayer, which is made up of two layers of phospholipids interwoven with cholesterol (a lipid component) to maintain  proper membrane fluidity  at different temperatures.
  • Furthermore, membranes are composed of membrane proteins, such as those that cannot be separated across the membrane and function as membrane transporters, and peripheral proteins that simply attach to the  outer membrane of the cell and function as membrane transporters. enzymes to help the cell interact with its environment.
  • The integrated glycolipids of the outer lipid layer perform a similar function.

To learn more about the membrane, refer to the following link:

brainly.com/question/1768729

#SPJ4

3 0
1 year ago
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