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What else can I help you with?
A lac repressor turns off the lac genes by binding to?
When the lac repressor binds to the O region, RNA polymerase is prevented from beginning the process of transcription. In effect, the binding of the repressor protein turns the operon "off" by preventing the transcription of its genes. (Prentice Hall Biology Book .....Chapter 12 page 310)
How many dominant alleles must be present in order to show the dominant phenotype?
Only one dominant allele is needed to display the dominant phenotype. Dominant alleles are expressed when present, masking the effect of recessive alleles.
How can you describe the mesmerizing movement of flickering fingers?
The mesmerizing movement of flickering fingers can be described as a captivating and fluid display of rapid and intricate motions, creating a hypnotic and enchanting effect.
These alleles show their effect on the phenotype whenever they are present in the genotype?
Dominant alleles carry traits or characteristics that will show no matter what. Recessive alleles carry traits where you must be homozygous for the recessive trait in order for it to show. Dominant alleles are represented by capital letters (EX: R or M) Recessive alleles are represented by lower case letters (EX: r or m) In order for a dominant allele to show, you can have either RR or Rr, since it is dominant. However, in order for a recessive allele to show, you MUST have rr. Hope this helps!
What does cause-and-effect pattern mean?
- Cause andeffect:Using the cause and effect pattern, a writer tries to describe why something happens, or what results of an occurrence are or were.This particular form of writing is crucial because it is integrated in most other forms.
When lactose is present in bacterial does it prevent the blocking effect of the repressor protein and allow the transcription of lactose metabolizing genes?
Yes. A precursor to lactose binds to the repressor and prevents or relaxes its binding to the Lac operon.
A lac repressor turns off the lac genes by binding to?
When the lac repressor binds to the O region, RNA polymerase is prevented from beginning the process of transcription. In effect, the binding of the repressor protein turns the operon "off" by preventing the transcription of its genes. (Prentice Hall Biology Book .....Chapter 12 page 310)
When lactose is present in bacterial cell's it prevents the blocking effect of the repress or protein and allows the transcription of lactose metabolizing gene true or false?
false
Describe how E. coli uses the negative and positive control of the lac operon to economize on RNA and protein synthesis?
if a regulatory protein in its active state turns off the expression of the operon, the operon is said to be negatively regulated by the regulatory protein. if the regulatory protein in its active state truns on the operon, the operon is positively regulated by the regulatory protein. an operon regulated by a repressor is therefore negatively regulated, because the presence of the active repressor prevents transcription of that operon. in contrast, an operon regulated by an activator is positively regulated, because in its active state the activator protein turns on transcription of the operon under its control. the lac operon of E. coli repressor(lac repressor) is synthesized through the activity of the gene lac I, known as regulator gene. the active form of the lac repressor, is a tetramer that contains four copies of the gene I product. in the absence of the inducer, the repressor binds to the lac operator sequence, preventing RNA polymerase from binding to the promoter and transcribing the structural genes. thus the lac operon is negatively regulated associated with the lac operon, there is another site, 16 base pairs upstream of the promoter, which is used for a positive control of the gene expression. this site is called catabolic activator protein site or cyclic AMP(cAMP) protein site or catabolite gene activator(cga) site, because it is utilized for binding of CAP or cga to stimulate gene expression. CAP can bind to this site only when it is bound with cAMP. by binding to it, the CAP-cAMP complex exerts a positive control over the transcription process. it has an effect exactly opposite to that of repressor binding to an operator. yhe effector molecule cAMP determines the effect of CAP on lac operon transcription. presence of glucose inhibits the formation of cAMP and prevents it to bind to CAP
What was Platos effect on present day?
What was Caesars effect on present day? What was Caesars effect on present day?
When you write a cause and effect essay you describe?
you describe the cause and effect
What effect do enzymes have on lactose?
Enzymes, like lactase, help break down lactose into glucose and galactose in the digestive system. This helps people with lactose intolerance digest and absorb lactose without experiencing symptoms such as bloating, gas, and diarrhea.
What might be an effect of the decrease in their production of lactase?
Their bodies cannot digest as much lactose as other people's bodies.
When did the present constitution go into effect?
1789
Can you get sick from almond milk?
I think you can, I drank almond milk before and it was the same effect as drinking regular milk and i am lactose intolerant. it was not fun.
Describe the effect that air masses have on climate?
It dose
What are the best ways to describe or define a cause and an effect?
A cause makes an effect happen, and an effect comes about as a result of a cause.
