Answer:
The answer is B and D.
Explanation:
PKA ( Protein Kinase A) is an enzyme which becomes active with the presence of cAMP molecules in the cell and the cAMP molecules need to bind to R subunits to become active which happens at a ratio of 1:2.
The example given in the question states that the Ro sububit can bind to 8 molecules of cAMP rather than the conventional 2.
This means that the activation of the Ro subunits is harder than the activation of R subunit because of the requirement of higher cAMP concentrations.
B is correct, full activity of PKA with Ro subunits needs a higher concentration of cAMP.
Because Ro binds to eight units of cAMP, the dynamic range of activity of PKA with Ro is going to be over a wider range of cAMP concentration.
I hope this answer helps.
Answer:
A purebred organism can either be TT or tt.
It is possible for two genetically different plants to have the same phenotype.
Explanation:
<span>Answer:
Marinol is a pharmaceutical form of THC, which can be used in place of cannabis. ... of cannabinoids found in natural cannabis, it can provide relief for certain conditions. ... It is federally approved for medical use in the US, but has been ... Patients taking Marinol tended to prefer it to other anti-nausea drugs.</span>
Answer:
The specific distant organ which is affected by a specific hormone secreted by a endocrine gland is called the target organ. For example, oxytocin secreted by the posterior pituitary affects the contraction of the walls of uterus resulting in parturition. Here, the uterine wall is the target organ.
Explanation:
- Endocrine system is a system of ductless glads that secrete and pour chemical messengers into the blood and control various metabolic activities of the body.
- Hormones are signal molecule that are produced by endocrine gland and are directly poured into the blood.
- According to current scientific definition : Hormones are low molecular weight, chemically heterogeneous non-nutrient substances which produced in trace amounts and act as inter-cellular signal molecules.
- Even though blood distributes hormones throughout the body, only specific target cell can respond to each hormone because only the target cell have receptors for binding with particular hormone.
Answer:
Centrioles
Explanation:
Centrioles are organelles located near the nucleus that help organize the chromosomes before cell division so each daughter cell receives the correct number of chromosomes.
