Answer: normal
Explanation:
In experimental design, especially those involving drug treatment, specimens (e.g mice, rabbit etc) are drafted into several groups to study their degree of response to the particular drug being investigated.
Of all, a group of specimens named NORMAL is usually NOT exposed to treatment in order to
- allow objective comparison between scientific parameters before and after experiments
Answer:
Mark me brainliest if it helps you
Bohr = Electrons move in circular paths that have different energies
Thomson= Atoms contain electrons,
Dalton = Matter is made up of indivisible atoms.
Rutherford = The mass of an atom is concentrated in its center
Schrödinger and others = Electrons exist in a cloud of probability
The question is incomplete. The part of the question after this is: Assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations.
Answer:
PFK: cytoplasm
insulin: ER--> Golgi--> outside cell
Explanation:
The proteins which are made and have to function in the same cell like Phosphofructokinase (PFK) do not have to undergo the modification processes which are required fro transporting a protein. Such kind of proteins are translated in the free cytoplasmic ribosomes and released into the cytoplasm where they start to function.
The proteins like insulin need to be traveled to different cells where they have to function. Such kind of proteins are formed in the ribosomes which have rough Endoplasmic Reticulum attached to them. From here, they travel to the Golgi complex where they are modified and packaged. From the Golgi-complex, these proteins are moved out of the cell.
Answer:
b. region of DNA consisting of the promoter, the operator, and coding sequences for structural proteins.
Explanation:
Operon is a segment of DNA that carry groups of genes coding for related proteins. An operon consists of an promoter, operator and coding sequences for structural proteins (regulatory and structural genes).
The promoter is the region in operon where RNA polymerase binds and initiates the process of transcription.
Regulatory DNA sequences are binding sites for regulatory proteins that control the expression of the operon "up" or "down." and structural genes code for proteins needed for cell function such as lactose metabolism.
Regulatory proteins acts as a repressor and when bind to operator, blocks the forward movement of RNA polymerase on the DNA.
Hence, the correct option is b.