D. Kept the same to make an experiment a fair test.
‘a controlled variable’
Answer:
Explanation:
The presence of a mutant lac repressor that could not bind lactose would result in __promotor_____ transcription even when lactose was present because the mutant repressor would remain bound to the lac __operator________.a.lots of; promoterb.no; promoterc.no; operatord.lots of; operator
The binding of a repressor blocks the action of RNA polymerase.
Answer:
b. The enzyme and substrate would be stuck together.
Explanation:
Enzymes are proteins whose active site binds to specific chemical reactants (i.e., substrates), thereby forming a complex that is similar to the interaction between a lock and its key. This active complex lowers the energy of the reaction and promotes a conformational change in the substrate to break down it into multiple products. When the enzyme contains mutations in its active site, the ability to bind the substrate is altered. In this case, the enzymatic reaction can't occur because the interaction enzyme-substrate doesn't produce an active complex.
Answer:
carbon dioxide
Explanation:
it is essential to living organisms but it can be dangerous because it is generated by fossil fuel combustion and deforestation
Answer:
A. The anterior pituitary is also known as the adenohypophysis.
C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.
D. Oxytocin is secreted by the anterior pituitary.
Explanation:
