It can replace, repair or be a new type of cell to benefit the host.
Cellular differentiation occurs throughout the cell development of a multi-cellular organism. It occurs when the cell changes from a simply zygote into a complex system of tissues and cell types.
<span>Stems cells are cells which have the potential to develop into many different cell types in the body during early life and growth. Stem cells serve as internal repair system in many tissues. When stem cells divide while undergoing cell differentiation, it can either retain being a stem cell or become another type of cell like muscle cell, brain cell, or red blood cell.<span> </span></span>
Answer:
E. All of these mechanisms are used; there is no single universal mechanism.
Explanation:
Gene expression is regulated at many levels. Some of them are:
- Chromatin remodeling regulation includes altered histone modifications such as methylation which can regulate gene expression (up or down).
- Transcription is regulated via transcriptional factors and specificity factors such as repressors and activators.
- RNA processing can be regulated through the alternative splicing (different introns can be excised and combinations of different exons connected)
- Post-translational modification refers to modification of proteins after being synthesized.
Hypothalamus Gland
Gonadotropin-releasing hormone (GnRH)
Stimulates Pituitary gland to release gonadotropin
Pituitary Gland
Growth hormone Regulates body growth
Thyroid Gland
Thyroxine
Regulates body metabolism
Pancreas Gland
Insulin and Glucagon
Regulates blood sugar level
Adrenal Gland
Epinephrine
Regulates heart rate and blood pressure
Testes
Testosterone
Development of sperms and male characteristics
Ovaries
Estrogen and Progesterone
Development of eggs and female characteristics
I don't know if there are options to this question, but here are some examples:
-To prevent spredingto other people, wash your hands often using soap and water; do not share any items with other people
-The client should contact the <span>healthcare provider if the symptoms are getting worst.
-</span><span>The client should go to the emergency or call 911 if they are having trouble </span><span> breathing, feel dizzy, or showing lips and fingernails turning blue.</span>
The study of heredity which is a biological process where a parent passes certain genes (traits) onto their offspring. <span>Heredity is the process that makes variations between individuals causing the evolution of species by natural selection. Inherited traits are controlled by one or more genes The study of heredity in biology is genetics.</span>