General Science Praxis Review Part 4

Front

What are autoimmune diseases?

Back

Autoimmune diseases occur when the immune system mistakenly attacks the body's own cells, tissues, or organs, often targeting specific molecules within the body.

Front

What happens to dry ice (solid CO2) when placed in a chamber at 1 atm and -15 C?

Back

The dry ice will immediately begin to vaporize due to the decrease in pressure and increase in temperature.

Front

What is believed to be at the center of the Milky Way galaxy?

Back

A supermassive black hole is currently accepted to be at the center of the Milky Way galaxy.

Front

How many protons, electrons, and neutrons are in O2-?

Back

O2- has 8 protons, 10 electrons, and 8 neutrons.

Front

What is meiosis?

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four genetically diverse daughter cells.

Front

What is the significance of crossing over in meiosis?

Back

Crossing over is the exchange of genetic material between non-sister chromatids during meiosis, increasing genetic diversity.

Front

What is a phase diagram?

Back

A phase diagram is a graphical representation showing the phases of a substance at different temperatures and pressures.

Front

What is the role of antibodies in autoimmune diseases?

Back

In autoimmune diseases, antibodies are produced against the body's own cells, leading to tissue damage and dysfunction.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse daughter cells.

Front

What is a supermassive black hole?

Back

A supermassive black hole is a black hole with a mass millions to billions times that of the Sun, typically found at the center of galaxies.