Answer:
Specific enzymes break down proteins into amino acids
Answer: Stem cells are like baby cells that haven’t decided what they want to be yet, so they could become anything. The other cells in our body already have either DNA to be a skin cell, muscle cell, kidney cell, red blood cell (to carry oxygen which binds to hemoglobin in the RBC), or a WBC (which helps fight off infections such as bacteria and viruses). I hope that this helps. Misty RN, BSN
Explanation:
Answer:
C. A mutation in the operator sequence
Explanation:
The operator sequence of the lac operon serves as the site for the binding of repressor protein. When repressor protein is bound to the operator sequence, the enzyme RNA polymerase is inhibited to carry out the process of transcription of the structural genes of the operon. Binding of allolactose to repressor does not allow it to bind to the operator sequence. This allows the expression of the lac operon in the presence of lactose sugar.
Any mutation in the operator region that disturbs the binding of the repressor to it would allow the expression of lac operon even in the absence of lactose allowing it to be expressed in a constitutive manner.