Membranes of late endosomes and lysosomes contain V-class proton pumps that act in concert with Cl- channels to acidify the vesicle lumen.

TLS Online TPP Program

#Id: 8954

#Section 3: Genetics, Cellular and Molecular Biology

As a chromosome with a new gene duplicate spreads through a population, there is polymorphism in the number of copies of the gene that individuals carry. This situation, called copy number variation.

TLS Online TPP Program

#Id: 8207

#Section 3: Genetics, Cellular and Molecular Biology

Anthocyanin pigments stored in vacuoles

Color the petals of many flowers so as to attract pollinating insects

TLS Online TPP Program

#Id: 7732

#Section 2: General Biology

Atoms are indivisible particles that can't be created or destroyed in a chemical reaction.

TLS Online TPP Program

#Id: 10381

#Section 2: General Biology

IL-4 increases expression of class II molecules in resting B cells, turning them into more efficient APCs.

TLS Online TPP Program

#Id: 8957

#Section 3: Genetics, Cellular and Molecular Biology

Gene duplication happens on a massive scale when whole genome duplication occur. whole genome duplication are two type, 

1.Autopolyploid

2.Allopolyploid