Some activities that cell requires energy may include cell division, active transport, protein synthesis etc.
In human, Cells get their energy by the food we eat. The nutrients in the food breaks down into soluble and simple molecules in stomach and small intestine and it is absorbed through the small intestine and assimilated into the cells, becoming part of it, providing the uses for each type of nutrient. And of course, many of them is the energy source.
        
             
        
        
        
Answer:
b. cis test 
Explanation:
A test that is used to determine if the mutation associated with a given phenotype is due to mutations in two different genes or due to different alleles of the same gene is called a complementation test. 
A complementation test is also called as a cis-trans test. 
If the mutations in a complementation test are located on the same position then the genes are termed as being on the cis position otherwise on the trans-position. 
A cis test, that is if the genes are located on the same position serves as a control for the complementation test. 
 
        
             
        
        
        
Sexual reproduction would help the most because the offspring are genetically varied more than other types of reproduction and are more likely to adapt and survive.
        
             
        
        
        
Hey Bonny959!
Terminal Velocity is reached when the drag force and buoyancy equal the force of gravity on a falling object!
Hope this helps!
        
             
        
        
        
Unicellular organisms are organisms which contain single cells , they include bacteria, archaea, protozoa, unicellular fungi, unicellular algae among other organisms. Multi cellular organisms are those organisms made of made up of many cells these includes plants and large organisms. Unicellular organisms are believed to have formed from non-living elements approximately 3.5 billion years ago.