Answer:
D
Explanation:
Enzymes are chemical catalysts they speed up/ increase the rate of the reaction by lowering the activation energy (minimum energy required for reaction to actually occur). 
 
        
             
        
        
        
Yes they will google the reason
        
             
        
        
        
Answer:
The correct answer is (amino) met - lys – phe
Explanation:
3' G C C G A U G G A U G A A G U U U U A A A G U A A U A G C A A U G G A G G A C 5'
Write the mRNA in opposite or reverse order as 5' to 3' and then start with AUG  codon. 
Write the mRNA in revers order as 5’ to 3’ and starts with AUG codon.
5’-CAGGAGGUAACGAUAAUGAAAUUUUGAAGUAGGUAGCCG -3’
mRNA—5’AUG-AAA-UUU-UGA-AGUAGGUAGCCG -3’      
Peptide: (amino) Met-Lys-Phe-STOP
 
        
             
        
        
        
Answer:
it is c: Taking observations at precise intervals
Explanation: I just took the test. 
 
        
             
        
        
        
<u>Answer:</u>
Recent evidence suggest that feathers evolved from scales and suggest that 'feathers and pycnofibers' could be homologous. 
<u>Explanation:</u>
- One of the major difficult issue related to bird evolution is the evolution of feathers.
- Feathers are considered as the most 'complex integumentary structures' which are found in vertebrates. 
- Evolutionary developmental biology suggests that the 'planar scale structure' is been modified for developing into feathers by 'splitting' to form web like structures.
- Scales and Feathers consist of 'two distinct form of keratin' so it was thought that 'each type was exclusive skin structure' but recent study suggests that they are developmental expressions of same skin structures.