<span>Your answer is Precambrian.</span>
Answer: D) cAMP
Explanation:
In the absence of glucose cell can make use of other sources of carbohydrates such as lactose. In E. Coli and other bacteria utilization of lactose depends on the availability of cAMP. Bacteria accumulate cAMP only when starved. When glucose is exhausted, cAMP is available in plenty.
cAMP is necessary for the gene expression because it binds catabolite repressor protein (CAP) to form CAP-cAMP complex. CAP is a lac repressor the binds to the operator site of the lac operon preventing RNAP From binding to the promoter.
RNA polymerase can bind to the promoter site only when CAP-cAMP formed
The correct option is IPSILATERAL. The anatomical path of a reflex is called reflex arc. An ipsilateral reflex arc is one in which the motor output occur on the same side of the body where the stimulus is detected. Apart from ipsilateral reflex arc, there are other two types, which are conlateral and intersegmental reflex arc.
Answer:
B. mutualism
Explanation:
Legume plants have the ability to fix atmospheric nitrogen, due to a mutualistic symbiotic relationship with bacteria found in root nodules of these plants.
Answer:Attached earlobes
Explanation: As the phenotype is a visible trait, and the father has ff (a recessive trait) he has the attached earlobes.