Which of the following statement is FALSE?Group of answer choicesa. A signaling cascade requires the recognition and conversion of information from an extracellular signaling molecule to an intracellular response.b. A stoichiometric step describes binding of one protein to activate another protein (one to one) in a signaling transduction.c. A signaling pathway can convert robust signal to weak response as a regulatory step.d. In a signaling transduction, a catalytic step is often mediated by an enzyme that converts substrates into products.e. None of the above is a false statement.

Which of the following are true about signaling pathways and responses?Group of answer choicesThe duration of a signaling response can be influenced by positive and negative feedback loopsSome types of signaling responses occur much more quickly than othersSometimes different types of signal molecules need to be present at the same time to stimulate a particular effect in the target cellEach signal molecule influences only one type of cell response, meaning that a signal molecule that drives proliferation will not also influence metabolismThe concentration of a signal molecule does not influence the magnitude or type of responseSome signals must be present in high amounts before a target cell will respond, while others are sensitive at low concentrations

In a metabolic pathway, the ______ of one chemical reaction becomes the ______ of the next reaction in the pathway.Multiple choice question.enzyme; substrateproduct; substratesubstrate; productproduct; enzyme

Determine which of the following best describes these two statements:a. Growth factor receptors employ kinase activated intracellular signalling cascades to activate transcription factors and gene transcription.b. Transcription factors can be directly activated by cortisolQuestion 5Select one:a.statements a and b are both falseb.statements a and b are both truec.statement a is true and statement b is falsed.statement b is true and statement a is false

1. Which of the following best describes the role of catabolite repression in microbial metabolism?Question 1Answera.Prevents the synthesis of enzymes for secondary carbon sources when a preferred source is availableb.Increases the production of secondary metabolitesc.Promotes the use of less preferred carbon sourcesd.Activates the regulatory genes for enzyme production

Which statement is accurate?(A) Hormones that differ in effect reach their target cells bydifferent routes through the body.(B) Pairs of hormones that have the same effect are said tohave antagonistic functions.(C) Hormones are often regulated through feedback loops.(D) Hormones of the same chemical class usually have thesame function