Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration. In active transport, particles move against the concentration gradient - and therefore require an input of energy from the cell.
Carbon is the basic building block to most cells in the body.
It helps with cellular respiration where your body releases energy stored in glucose and the glucose compound is full of carbon, hydrogen, and oxygen.
Carbon makes up 18% of the human body.
Sugars in the body like glucose hold carbon elements.
The correct answer is option b, that is, circadian rhythms.
A roughly 24-hour cycle in the physiological procedures of living beings, comprising animals, plants, fungi, and cyanobacteria is known as a circadian rhythm. In a strict sense, circadian rhythms are produced endogenously, however, they can be modulated by external cues like temperature and sunlight.
The circadian rhythms can affect the release of the hormone, sleep-wake cycles, digestion and eating habits, the temperature of the body, and other essential functions of the body.
The right answer is a. they contain many small, repeating subunits bonded together.
In chemistry and biology, a polymer is a molecule made up of a chain of similar molecules, called monomers; a polymer is a macromolecule resulting from the assembly of many identical units (monomers), a chemical compound with repetitive structural units.
DNA, glycogen and proteins are polymers
Answer is c. Natural gas.
Natural gas is a fossil fuel in liquid form that can be used as an energy source. It is found in subterranean reservoirs, often near oil deposits. It is non-renewable energy source. It takes very long time to renew. Natural gas is less pollutant as compared to coal and petroleum because when it's burned, it releases 25 % fewer greenhouse gases and pollutants. hydroelectric power, solar power and nuclear energy are renewable sources.
