Which of the following are roles carbohydrates play in biological systems? Group of answer choices the basis of most of the organic matter on our planet (cellulose, chitin, etc.)

Here are the completed options

fuels

components of DNA and RNA

signalling

forming barriers between organelles

digesting enzymes

breaking up lipids for digestion

providing structure

The correct options are

most of the organic matter on our planet (cellulose, chitin, etc.)

Carbohydrates act as Body fuels

providing structure

Explanation:

Carbohydrates are biological molecules and are constituents of starches, sugars, glucose e.t.c and are made up of carbon, hydrogen and oxygen which are the major constituents elements of the most organic matter on the planet.

Carbohydrates is a body fuel that act as the major energy source in the body. It gives and provide energy in the body needed for biological activities.

In plants, carbohydrates make up part of the cellulose, giving plants strength and structure. carbohydrates is to form a structure called the glycocalyx.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: