Laticifers are made of individual cells and can occur either as articulated systems (single cells connected by a small tube) or non-articulated systems (one large syncytial cell).

TLS Online TPP Program

#Id: 8110

#XL - T Zoology

Archaea membrane lipids are isoprene-based lipids.

TLS Online TPP Program

#Id: 8098

#XL - Q Biochemistry

The surfaces of the cells that form the alveoli (small air spaces of the lung) are coated with surfactant, which decreases the alveolar surface tension. 

Lung surfactant contains 80 to 90% phospholipid by weight, and 70 to 80% of the phospholipid is phosphatidylcholine, mostly the dipalmitoyl species.

TLS Online TPP Program

#Id: 9215

#XL - T Zoology

Some factor determine Ne

1.Sex ratio.

2.Variation between individual in reproduction success.

3.Fluctuation in population size.

4.The age structure of the population.

5.Mating is random.

TLS Online TPP Program

#Id: 2170

#XL - T Zoology

The components of fitness are survival and reproduction.

TLS Online TPP Program

#Id: 8608

#XL - T Zoology

There are three D cyclins in mammals:

cyclins D1, D2, and D3