Infectious Diseases: Understanding Microbes, Transmission, and Immunity
1. What Should Be Said to Treat Infectious Diseases in Countries Unable to Take Action?
Developed countries must show solidarity with those who cannot take action. It’s concerning that many developed nations prioritize their own spending over aiding countries in need.
2. What Is a Microbe? What Is an Antibiotic?
A microbe, or microorganism, is a living organism too small to be seen with the naked eye. Microbes are individual entities with a basic biological organization, unlike plants and animals.
Read MoreHuman Cell Biology and Anatomy: Structure, Function, and Systems
Study of Man
The human body moves, deliberates, and survives adverse conditions. Its construction is complex and survives because of its brain, which is able to think abstractly and enrich perceptions, reasoning, and actions. All life is made up of cells, tiny units that make up the body. The first human cell is the zygote, or fertilized egg. Cells breathe, eat, and are able to reproduce. In the body, there are 200,000 billion cells that collaborate in survival and reproduction. Each cell is an individual
Read MoreWorkplace Hazards: Physical, Chemical, Biological, Organizational
Item 10. Risk Factors
1. Physical Hazards
These are different forms of energy that can affect those in their sphere of action, such as noise, vibration, lighting, thermal conditions, electrical hazards, and radiation.
a) Noise: Can damage the hearing apparatus and cause physiological and psychological effects. Noise is unwanted and annoying sound. Sound is an auditory sensation originating from a sound wave that comes from a vibration. The volume is measured in decibels (dB) and is determined by the
Read MoreKey Concepts in Genetics and Molecular Biology
Preformationism
In the 18th century, rudimentary microscopic observation of spermatozoa led to the belief that they contained tiny, fully formed humans called homunculi. It was thought that fertilization simply initiated the growth of these homunculi into individuals.
Epigenesis
With the development of the microscope, it became clear that fertilization involved not only growth but also a series of structural changes leading to the development of a complex organism.
Pangenesis
This theory proposed that
Read MoreDNA Structure, Function, and Amino Acid Properties
DNA: Structure and Function
DNA is a linear polymer composed of a pentose, a phosphate, and a nitrogenous base, which can be A, T, C, or G.
Primary Structure
The primary structure is the sequence of nucleotides linked by phosphodiester bonds. These links are established between the phosphate radical located in the 5′ carbon of one nucleotide and the OH radical in the 3′ carbon of the next nucleotide. A DNA strand has two free ends: the 5′ phosphate and the 3′ attached to a hydroxyl. These chains of
Read MoreHuman Genome: Understanding DNA, GMOs, and Genetic Diseases
Universal Statement on the Human Genome and Human Rights
The human genome is the basis of the fundamental unity of all members of the human family and the recognition of their inherent dignity and diversity. In a symbolic sense, the genome is the heritage of humanity.
- Each individual is entitled to respect for their dignity and rights, regardless of their characteristics.
- That dignity makes it imperative not to reduce individuals to their genetic characteristics and to respect the uniqueness of each