Answer:
Chlorophyll absorbs the red and blue segment of the white light and photosynthesis occurs most efficiently at these wavelengths.
When the light falls on the plant, the chlorophyll pigment absorbs this light and electrons in it gets excited.
This process occurs in a complex protein system which is collectively called as a photosystem.
Explanation:
 
        
             
        
        
        
Answer:
2, phenotype
 traits are determined using genetics
 
        
             
        
        
        
Answer:
CCCATG
Explanation:
A complements with T and Vice versa
C complements with G and Vice versa
 
        
             
        
        
        
Answer:
4 grams
Explanation:
If in an experiment, we have 4g of reactants, the mass of the products will also be 4g. 
This is in compliance with the law of conservation of mass in a chemical reaction. 
According to this law, 
   "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another". 
If: 
       A + B →  C
          4g        4g 
mass of A and B must be equal to the mass of the product according to the law of conservation of mass.