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.
<span>He should lower his intake of red meats and fats, such as butters and beef. These foods contain high levels of LDL cholesterols which can cause atherosclerosis, among other diseases. Limiting the intake of meat and fats can help ameliorate this risk.</span>
<span>If you're studying oxygen consumption during respiration, the heat-killed seeds are probably a control, since their O2 consumption is assumed to be 0.</span>
Answer:
4) d
Explanation:
In the given figure, <u>A is a wavelength</u> which is the distance between two crests of a wave. <u>B is a crest</u> which is the highest point located on a wave at maximum distance upward from the middle of the wave. C is a trough which is an opposite of crest meaning that it is the lowest point on a wave from the middle.
Lastly, <u>equilibrium</u> is a point located in the middle of wave. In other words, it is the average of crests and troughs located on a wavelength.
Answer:
powder volume = 250mg/ml * 78ml = 19,500mg = 19.5grams
Explanation:
A 150 ml bottle of Amoxicillin
250 mg/ml for oral suspension of Amoxicillin
requires the addition of 78 ml of Purified Water
to give a 150 ml of suspension.
given that the dosage of powder amoxicillin is 250mg to 1ml of water
therefore for 78ml of water;
the powder volume =suspension/water
= 250mg/ml * 78ml = 19,500mg = 19.5grams