Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..