Microtubules

Microtubules are hollow. Their walls consist of 13 polymerized dimers of α-tubulin and β-tubulin (right image). The left image shows the tube's molecular structure.Source: OpenStax Biology 2e OpenStax Biology 2e As their name implies, microtubules are small hollow tubes. Polymerized dimers of α-tubulin and β-tubulin, two globular proteins, comprise the microtubule's walls. With a diameter … Continue reading Microtubules

Geneticist

By United States National Institutes for Health, Center for Hearing and Communication Disorders - http://www.ushersyndrome.nih.gov/join/counseling.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6610979 OpenStax Biology 2e Many diseases arise from genetic mutations that prevent synthesizing critical proteins. One such disease is Lowe disease (or oculocerebrorenal syndrome, because it affects the eyes, brain, and kidneys). In Lowe disease, there is a … Continue reading Geneticist

Cardiologist

Abbott, Maude Elizabeth Seymour, 1869-1940By Dr. Webb Haymaker; Contribution; 1950. - http://resource.nlm.nih.gov/101450958, Public Domain, https://commons.wikimedia.org/w/index.php?curid=89581003 OpenStax Biology 2e Heart disease is the leading cause of death in the United States. This is primarily due to our sedentary lifestyle and our high trans-fat diets. Heart failure is just one of many disabling heart conditions. Heart failure … Continue reading Cardiologist

Endosymbiosis

By Kytianas - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=79308137 OpenStax Biology 2e Both mitochondria and chloroplasts contain DNA and ribosomes. Have you wondered why? Strong evidence points to endosymbiosis as the explanation. Symbiosis is a relationship in which organisms from two separate species depend on each other for their survival. Endosymbiosis (endo- = “within”) is … Continue reading Endosymbiosis

Animal Cells versus Plant Cells

The centrosome consists of two centrioles that lie at right angles to each other. Each centriole is a cylinder comprised of nine triplets of microtubules. Nontubulin proteins (indicated by the green lines) hold the microtubule triplets together.Source: OpenStax Biology 2e OpenStax Biology 2e Each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, … Continue reading Animal Cells versus Plant Cells

Highlights: Wild Rabbits of North America Getting Killed By A Deadly Virus

Photo by Pixabay on Pexels.com Wild rabbits in the southwestern part of North America are getting infected with a deadly virus. The virus has already affected rabbits in Southern California.The infecting culprit is called rabbit hemorrhagic disease virus 2 or RHDV2 which is a lagovirus in the family Caliciviridae. Rabbits, hares, and pikas are the … Continue reading Highlights: Wild Rabbits of North America Getting Killed By A Deadly Virus

Highlights: Rat Heart Has A Brain and a 3-D Model Will Show You

Nerve cells which constitute the intracardiac nervous system of a rat heart.Credit: S. ACHANTA ET AL/ISCIENCE 2020 Intracardiac nervous system is a part of the heart called "little brain".The big brain is still the heart's control center but the neurons in the heart may also play a role. Researchers think that these nerve cells may … Continue reading Highlights: Rat Heart Has A Brain and a 3-D Model Will Show You

Highlights: Mind-Controlling Parasite May Play Role On People’s Entrepreneurial Behavior

Photo Source: https://scitechdaily.com/ Toxoplasma gondii is an obligate intracellular parasite that causes the infectious disease toxoplasmosis. T. gondii has the ability to infect any warm-blooded animals. Domestic cats are the only known definitive hosts that the parasite can undergo sexual reproduction.The parasite infects an estimated 2 billion people around the world and has been linked … Continue reading Highlights: Mind-Controlling Parasite May Play Role On People’s Entrepreneurial Behavior