Science Stuff Flashcards

1
Q

The first of these organisms to be discovered was proposed to have a hollow, helical structure by Rosalind Franklin, and is known as the “tobacco mosaic” kind. Some of these organisms use reverse transcriptase to integrate DNA into the host cell. A protein capsid surrounds these entities, which are unable to reproduce outside a host cell.

A

Viruses

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2
Q

Pair production near the boundary of these objects leads to their evaporation in the form of Hawking radiation. In the simplest case, the Schwarzchild radius is the distance from one of these objects’ singularity to its event horizon. The idea that these objects emit blackbody radiation due to mutually entangled particles was proposed by Stephen Hawking. Scientists have proposed a “firewall” that destroys matter that enters these objects. If these objects are rotating, they possess an ergosphere and can be modeled using the Kerr metric.

A

Black Holes

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3
Q

After a Type II supernova, a star becomes a black hole if the resulting black hole will have a mass greater than this limit.

A

TOV Limit

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4
Q

Name these massive stellar explosions, which usually leave behind a remnant of the original star, such as a nebula.

A

Supernovae

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5
Q

name this law of fluid dynamics that states that an increase in the speed of a fluid will result in a decrease in the pressure or the fluid’s potential energy. It explains the net upward force experienced by airplane wings, known as dynamic lift.

A

Bernoulli’s Principle

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6
Q

A high ratio of auxin to cytokinin tends to promote development of these structures. Apoplastic transport into the stele of these structures is prevented by their Casparian Strips. These structures may form mutualistic relationships with fungi called mycorrhizae

A

Roots

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7
Q

Forming stalagmites and stalactites, name this white, easily erodible rock, notable for forming sinkholes and underground caves. This rock, when eroded, forms karst topography, Travertine is a form of this rock that is deposited by hot springs

A

Limestone

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8
Q

name this effect caused by Earth’s rotation, in which objects deflect to the right in the Northern Hemisphere

A

Coriolis Effect

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9
Q

name this phylum also known as flatworms, The only bilaterians without a body cavity are members of this phylum, which includes planarians and tapeworms. Some species of this phylum are hermaphrodites that reproduce using a technique called “penis fencing”. Members of this phylum remove waste using flame cells.

A

Platyhelminthes

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10
Q

name this class of nucleic acids, the “messenger” variety of which is transcribed from DNA. This molecule carries amino acids to the ribosomes to make proteins. Introns are spliced out of these molecules, which contain uracil.

A

RNA

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11
Q

When these structures are not attached to land, they are classified as atolls, Of their three main types, the “fringing” type occupies a shallow zone of water, Darwin’s first paper was on the formation of this biome

A

Coral Reefs

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12
Q

an abnormal enlargement of your thyroid gland.

A

Goiter

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13
Q

it is a precursor for the formation of steroid hormones and vitamin D. name this lipid that maintains fluidity in cell membranes and is transported by LDL and HDL proteins. Gallstones are made of this compound. It is a precursor to all bile salts

A

Cholesterol

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14
Q

Objects exhibiting this phenomenon can produce popping noises in the Barkhausen effect. This phenomenon is described by a model where points on a model correspond to spin states of atoms, called the Ising Model. This phenomenon occurs when the Weiss domains of an object align, which is only possible below the Curie temperature.

A

Ferromagnetism

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15
Q

The intensity of these objects can be measured on the twelve-point Soloviev-Imamura scale. A warning sign for one of these objects is a phenomenon called a drawback, although early detection of them is difficult because of shoaling.

A

Tsunami

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16
Q

Cancer of this organ sometimes presents with painless jaundice, This organ’s endocrine cells are contained in its Islets of Langerhans. its Duct of Wirsung empties its contents into the duodenum. secretes insulin

A

Pancreas

17
Q

The International Space Station orbits within this layer, This region receives most of its energy from solar EUV rays, which is why its size changes so much seasonally. Scientists never figured out the cause of a 2009 “collapse” of this structure that was much larger than sunspot cycles could explain. This layer is the primary location of auroras.

A

Thermosphere