In E. coli., DNA polymerase III, a multisubunit protein, is the replication polymerase responsible for de novo synthesis of new strands of DNA. 

TLS Online TPP Program

#Id: 9523

#Unit 6. System Physiology – Plant

Three major types of insect herbivores

Phloem feeders, such as aphids and whiteflies, cause little damage to the epidermis and mesophyll cells. Phloem feeders insert their narrow stylet, which is an elongated mouthpart, into the phloem sieve tubes of leaves and stems. 

TLS Online TPP Program

#Id: 9524

#Unit 6. System Physiology – Plant

The amount of direct injury to the plant is low, when these insects serve as vectors for plant viruses they can cause great damage.

TLS Online TPP Program

#Id: 9525

#Unit 6. System Physiology – Plant

Cell-content feeders, such as mites and thrips, are piercing-and-sucking insects that cause an intermediate amount of physical damage to plant cells.

TLS Online TPP Program

#Id: 9526

#Unit 6. System Physiology – Plant

Chewing insects, such as caterpillars, grasshoppers, and beetles, cause the most significant damage to plants. 

TLS Online TPP Program

#Id: 9527

#Unit 6. System Physiology – Plant

Plant viruses are biotrophs and they enters in the plants via plasmodesmata and phloem

TLS Online TPP Program

#Id: 9529

#Unit 6. System Physiology – Plant

Plant viruses have small genomes; most encode only three to 10 proteins.