General Science and Computing Quiz

In a CRT monitor, resolution is primarily limited by pixel size - smaller pixels allow more pixels per inch, creating sharper images with higher resolution. The number of pixels (B) is the result of size constraints, not the determining factor. Pixel shape (C) and color (D) don't directly control resolution.

Charles Darwin developed his theory of evolution during his voyage on HMS Beagle (1831-1836). The Santa Maria was Columbus' ship, Endeavour was Cook's, and Enterprise is a fictional/future name. The Beagle voyage to the Galapagos Islands was crucial to Darwin's observations.

An estuary is the correct term for where a river meets the sea, creating a wide body of brackish water with tidal influence. Ponds and lakes are freshwater bodies not connected to the sea, while a bay is a coastal inlet but not specifically a river mouth.

A supernova is the explosive death of a star, occurring when a massive star exhausts its nuclear fuel and collapses. A quasar is an extremely luminous active galactic nucleus, a pulsar is a rotating neutron star, and nebulae are clouds of gas and dust in space.

The gall bladder stores and concentrates bile produced by the liver, releasing it into the small intestine to aid in fat digestion. The liver produces bile but does not store it, while the appendix and thyroid have unrelated digestive functions.

Watt is the SI unit of power, defined as one joule per second. Joule is the unit of energy or work, Newton measures force, and Ampere measures electric current. Power is the rate of energy transfer.

Scurvy is caused by deficiency of vitamin C (ascorbic acid). Vitamin C is essential for collagen synthesis in the body. Vitamin A deficiency causes night blindness, Vitamin B deficiency causes beriberi/pellagra, and Vitamin D deficiency causes rickets.

Flies have chemosensory receptors (taste buds) located on their feet and legs. This allows them to taste food by simply walking on it, which helps them identify suitable food sources quickly. They don't taste with their mouth, back, or stomach.

Stratocumulus clouds are low-level clouds typically found below 2,000 meters altitude. They appear as low, lumpy layers rather than high and fluffy. Altocumulus are mid-level clouds, Cirrus (not 'Cirrud') are high-level wispy clouds, and Cirrostratus are also high-level thin clouds.

The epidermis is the outermost layer of skin, providing protection against the environment. The dermis is the deeper layer containing blood vessels and nerves. Hair follicles are structures in the dermis, and hair shaft is the visible part of hair above skin.

Male bees are called drones. Drones are male honeybees that develop from unfertilized eggs and their primary purpose is to mate with the queen. Worker bees are infertile females, and Colletes and Andrena are genera of bees, not types of bees within a hive.

The resistance of a material is directly proportional to its length. This relationship comes from the formula R = ρL/A where R is resistance, ρ is resistivity, L is length, and A is cross-sectional area. As length increases, resistance increases linearly, assuming constant cross-section and material.

Paleontology is the scientific study of ancient life forms, particularly dinosaurs and other organisms that lived in prehistoric times. It involves studying fossils to understand evolution and extinct species.

The leading scientific theory for dinosaur extinction is that a massive meteorite impact 66 million years ago caused climate disruption that wiped them out. This created the Chicxulub crater and led to mass extinction.

Somatotropin (also called somatotropin) is the correct name for growth hormone, which is produced by the anterior pituitary gland and stimulates growth, cell reproduction, and regeneration. Vasopressin is an antidiuretic hormone that regulates water balance. Secretin stimulates pancreatic bicarbonate secretion. Norepinephrine is a stress hormone and neurotransmitter, not a growth factor.

Influenza (flu) is caused by influenza viruses, specifically type A, B, or C influenza viruses. It is NOT caused by bacteria (which cause strep throat or bacterial pneumonia). 'Catching a chill' and 'being run down' are myths or risk factors that may weaken immune response, but they are not the actual causative agent.

In Unix and Linux systems, the sdiff command is used to side-by-side merge and compare two files, highlighting differences between them.

In the Joe editor (a lightweight text editor for Unix), the keyboard shortcut Ctrl+K followed by P moves the cursor to the top window when working with split windows. This is part of Joe's set of window management commands that allow users to navigate between multiple split panes efficiently. The Ctrl+K prefix activates Joe's command mode, and P is the specific command for positioning to the top window.

In the Joe editor, the command to mark the end of a block (for text selection or blocking operations) is actually Ctrl+K followed by B, not Ctrl+K followed by L. Ctrl+K,B marks the beginning of a block and Ctrl+K,K marks the end of a block - this pair of commands is used to define a text block for operations like copying, moving, or deleting. The statement incorrectly claims that Ctrl+K,L is used for this purpose.

In the vi editor, the command :qall (quit all) is used to close all buffers and exit the editor. This command is particularly useful when you have multiple files open simultaneously and want to close them all at once. It's different from :qa which also quits all, and :q! which quits the current window discarding changes. The :qall command will fail if any buffers have unsaved changes, requiring :qall! to force quit.