Answer:
The ovum or egg cell is the part of female reproductive gamete present in oogamous organisms. The ovum is larger, and visible to the naked eye compare to motile sperm cell, and egg cell are not capable of active movement.
The cytoplasm of an unfertilized egg is contain unevenly distributed proteins, mRNA, other organelles, and substances. Many proteins are present in a concentrated form at the one end of the cell, and helping to provide positional information to the growing embryo.
Answer:
THATS CHEATING NO CHATING IN THE TEST NO NO ITS AGAINST COMMUNITY GUIDELINES!
Explanation:
Answer:
i dont know what the following are buttt here are some Characteristics of electrons -
Electrons are negatively charged particles.
They revolve around the nucleus in various energy levels.
They can be excited to higher energy levels by absorbing energy.
Mass of electron is 1/2000 times of proton/neutron.
Vestigial structures may not be useful for the species' survival, but they show links in the evolutionary tree. For example, whales have a pelvis, even though they don't need it or anything, showing they evolved with humans
Answer:
Helper T cells
Explanation:
This is because it is a type of adaptive immune system that stimulate B cells, microphages and cytoxic T cells. Helper T cells are used in different adaptive immune responses. They help to activate B cells so as to produce antibodies and also help macrophages to destroy ingested microbes. they also help activate cytotoxic T cells which will inturn kill infected target cells.
