Practice Questions

TLS Online TPP Program

#Question id: 1104

Which of the following statements is true of signal molecules?

#SCPH06 I Botany

When signal molecules first bind to receptor tyrosine kinases, the receptors phosphorylate a number of nearby molecules.
In response to some G protein-mediated signals, a special type of lipid molecule associated with the plasma membrane is cleaved to form IP3 and calcium.
In most cases, signal molecules interact with the cell at the plasma membrane, enter the cell, and eventually enter the nucleus.
Protein kinase A activation is one possible result of signal molecules binding to G protein coupled receptors.

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TLS Online TPP Program

#Question id: 4730

#SCPH12 I Genetics

Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?

TLS Online TPP Program

#Question id: 10941

#I Life Science/ Life Sciences Group – I-V

In a normal healthy person, which of the following blood components has the shortest life span?

TLS Online TPP Program

#Question id: 454

#SCPH05 I Biotechnology

Which statement is false about most metabolic pathways?

TLS Online TPP Program

#Question id: 27897

#Research Methodology

The ethically reflective practitioner: