A spherical shell that is usually made of a biodegradable or resorbable plastic polymer, that has a very small diameter usually in the micrometer or nanometer range, and that is often filled with a substance (as a drug or antibody) for release as the shell is degraded.
A spherical shell that is usually made of a biodegradable or resorbable plastic polymer, that has a very small diameter usually in the micrometer or nanometer range, and that is often filled with a substance (as a drug or antibody) for release as the shell is degraded...
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
