Rea Practice Test 2 Flashcards by Kash Me

Ordovician period

Mass extinctions followed by diversification of species that survived extinctions
Development of land plants

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Cambrian period

Fossilized exoskeleton, explosion of evolution into multitudes of phyla

The Cambrian Period was the first geological period of the Paleozoic Era, of the Phanerozoic Eon. The Cambrian lasted 55.6 million years

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Precambrian period

Fossilized burrows indicate development of multicellular animals with only soft parts

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Silurian period

New species developed through adaptive radiation

Underwater life thrived

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Permian period

The Permian is a geologic period and system which spans 46.7 million years from the end of the Carboniferous Period 298.9 million years ago

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Primary oocytes

Present in reproductive organs at birth

The primary oocytes are produced during the embryonic stage by oogenesis.
At the embryonic stage, each oogonium inside the ovary of a fetus divides by mitosis to form a primary oocyte which enters the prophase of meiosis I and gets arrested at this phase of the cell cycle, until the child reaches the puberty age.
At the puberty stage, the primary oocyte will complete meiosis I to form a secondary oocyte.

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Cleavage

Division of the zygote into multiple cells

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Secondary spermatocytes

Develop into spermatid
Haploid cells that will develop into male gametes

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Oogenesis

The formation of mature female gametes is called oogenesis.
This process starts during embryonic development in the mother’s womb.
The gamete mother cells called oogonia are formed within the fetal ovary.
The oogonia undergo mitotic division to form a primary oocyte.

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Polar body

Infertile cell resulting from meiosis II in females

polar body is a small haploid cell that is formed at the same time as an egg cell during oogenesis, but generally does not have the ability to be fertilized

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Alpha decay

The nuclear reaction that gives off the nucleus’s of a helium atom

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Beta decay

The nuclear reaction that turns a neutron to a proton

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Positron decay

The nuclear reaction that turns a proton into a neutron star

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Neutron capture

Neutron capture is a nuclear reaction in which an atomic nucleus and one or more neutrons collide and merge to form a heavier nucleus.[1] Since neutrons have no electric charge, they can enter a nucleus more easily than positively charged protons

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Gamma radiation

The emission of very high energy photons

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Limiting factors

Biotic and abiotic influences that cause a disturbance in an ecosystem that affects the population growth rate

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Law of minimums

The tendency for the resource in shortest supply to limit the population growth

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Homeostasis

Dynamic balance achieved within an ecosystem functioning at its optimal level

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Density

Number of organisms per area

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Law of intolerance

Population growth is limited by having more of a substance than it’s required

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Which of the following is within the phylum chordata

Perch

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Which organs function as an organ of the immune system

Tonsils
Lymph nodes
Spleen
Thymus

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Which is included in Oparins hypothesis

The young earth had very little oxygen present in the atomic atmosphere
The earth is more than four billion years old
Heat energy was abundantly available because of the Earths cooling
Large organic molecule capable of dividing and absorption became plentiful resulting in eventual evolution of early life

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Which is true regarding fundamental atomic particles

Each quark is called a flavor

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Why is solid copper a strong conductor but solid copper sulfide is not

The d level electrons in metallic bonds are de localized

Member of which groups category are most closely related

Genus

After a forest fire a meadow community develops and is later replaced by a temperate forest community this process is called what

Succession

If the nucleus of an oxygen isotope 8p 8n was split exactly in two, what would the new elements consist of

Two beryllium

Given the order of magnitude of the four fundamental forces, what is their order from weakest to strongest

Gravity, weak nuclear, electromagnetic, strong nuclear

Which of the following kingdoms contains photosynthetic organisms

Protista

Which layer of the atmosphere is closest to the surface of the earth

Troposphere

Thermodynamics deals with the study of which if the following systems which can be observed and measured in experiments

Large scale response

Which of the following factors exerts the most influence over limiting cell size

The ratio of surface area to volume of cytoplasm

The cause of earths magnetic field is

Still a mystery from deep in earths core

Which of the following explains why a sound wave has a higher pitch than the original source

The source is moving forward

When water pressure is equal inside and outside the cell it is said to be

Isotonic

Which of the following organelles is found in plants only and help provide rigidity to cells

Cell walls

What is not true about enzymes

Enzymes only function within living thjngs

What pairs of matter and antimatter are related correctly

Proton and antiproton

The astronautical unit or AU is

The average distance of Earth from the sun

An ion that attaches to an enzyme to become better able to catalyze a reaction is known as

A prosthetic group

When a stream full of sediments flows out of a narrow mountain canyon and widens into a stream channel losing velocity and forming large fan shaped deposits it is called an

Alluvial fan

A thermodynamic process that does not involve heat transfer is called an

Adiabatic process

Monotremes are mammals that lay eggs the feature of egg laying in this case most likely suggests

A convergent evolution of analogous traits

Which of the following gases would be expected to show the greatest deviation from ideal behavior

H2S

If you were abroad a spacecraft that is traveling away from Earth at 9.8 you would feel the same force as if you were standing on earths surface this is an example of

Einstein equivalence principle Person acting as an observer in a spacecraft enclosed in a completely sealed opaque chamber perceives the forces acting upon that space craft as if the person were experienced the gravitational pull of earth

The synthesis of ATP molecules to store energy is an example of

Anabolism

Energy transformations that occur as chemicals are broken apart or synthesized within the cell are collectively known as

Metabolism

Archimedes principle states that an object is buoyed up by a force that is equal to

Weight of the fluid displaced

When determining molar volume of a gas by collecting the gas over water which of the following laws must be considered to take into account pressure exerted by water vapor in the collection bottle

Dalton’s law Law states that the total pressure exerted by a mixture of gases equals the sun of the partial pressures of each component in the mixture

Which of the following is not true of an electromagnet

And electromagnetic is not a permanent magnet Strength of electromagnet is not limited and can be increased easily

Two thirds of all known active volcanoes are in the

Pacific Ocean

Which of the following types of waves are longitudinal

P waves from a earthquake

A solid object with a specific gravity greater than 1 will typically do which of the following based on perimeter alone

Sink in liquid water

The continuous cycle of the alternating rise and fall of the sea level observed along the coastlines and bodies of water connected to the sea is called

The tide

The parallax of a star is

The angle through which the star appears to move in the course of half a year

Which kingdom has members that were most likely to have evolved earlier than members of any other kingdom

Kingdom monera contained prokaryotic cells which are considered to be the first to evolve

In mechanics there are three fundamental quantities that can be measured. All mechanical measurements can be reduced to a combination of these three quanitities . What are they

Length mass and time

Which demonstrates the highest melting point

SiC The highest melting point will be demonstrated by the crystal that has strongest forces holding it in crystalline structure SiC is held together with network covalent attraction (stronger than ionic and polar attraction)

Where is the vascular cylinder and what does it do

E Inside middle In the center of the root is the vascular cylinder including xylem and phloem tissue

Where is the epidermis and what does it do

B Outside layer One cell layer thick and serves to protect the internal root tissue and absorb nutrients and water

Where is the root hairs and what does it do

A Pertruding from epidermis Root hairs are extensions of the cells that reach between soil particles and retrieve water and minerals

Where is the endodermis and what does it do

D Layer under cortex Inside the cortex, it is a single layer of cells that are tightly connected so no substances can pass between cells Acts like filter

Where is the cortex and what does it do

C One layer under epidermis Made of large parenchyma cells

Astronomers call the visible surface of the sun the

Photosphere

The weight of an object depends on the

Mass of an object and the gravitational force pulling on it

A bilateral of phospholipids with protein globules interspersed is characteristic of what organelle

Cell or plasma membrane

The iron containing molecule that carries oxygen within red blood class throughout the body via circulatory system is the

Hemoglobin

An unknown plant found in the forest has five petals in its flower and tap root system which is most likely to be true

The leaves of the plant have networked veins

What is a characteristic of light

Light behaves as a particle and as a wave

Why do we sea lighting before we hear thunder

Because the difference between the speed of light and sound

Temporary movement of a species from one range to another then back to original range is known as

Migration

How is relative strength of a thunderstorm updraft estimated

By the size of the the precipitation particles

Plants reproduce through alternation in generations. The diploid generation that produces male and female gametophytes is known as the

Sporophyte generation

A particular plant has individuals that are either male or female. A male individual if this plant may have all the following except

a stigma The male structure is the stamen, consisting of the anther atop a long hollow filament.

Which of the following structural layers of earth is liquid

The core

The law of segregation states that

Genes are separated in gamete formation and randomly brought together in fertilization Traits are expressed from a pair of genes in the individual , one came from each parent

What is not involved in the immune system

Epithelial (skin) cells have no direct function in immunity

To be considered a mineral the substance must never have been a part of a living organism and must be found in

Nature

Plants and animals obtain usable nitrogen through the action of

Nitrogen fixation by bacteria and lightning They can use nitrogen from air

Why does cement floor feel cooler to touch than a wooden floor

The conductivity of cement is higher and allows heat from your fingers to flow to more than wood does.

As you move across a row in the periodic table which of the following traits increase and which do not

Each new element experiences a greater pull between nucleus and electrons- this pulls the outer electrons and decreases atomic radius

If star x appears to be 2.5 times as bright as Star Y then the two stars differ in magnitude by

1 One unit in magnitude corresponds to and increase of brightness by 2.5

What are the steps in the carbon cycle

Carbon took in by plants-form carbs by photosynthesis Carbon dissolved out of air into ocean-form calcium carbonate, organisms form shells Detritus feeders (worms, mites, insects) return carbon to elemental form Burning fossil fuels release carbon in atmosphere

The stomach secretes:

Digestive enzymes. Hydrochloric acid, gastric juices, and mucous The stomach does not secrete acetic acid

Minerals are identifies and classified by all the following measurable physical properties except for

Firmness Identifiable properties of minerals are: cleavage, fracture, luster, color

The organelle of a cell that engaged in both passive and active transport is the

Cell (plasma) membrane

The path of the sun across the celestial sphere is called the

Elliptic is the apparent annual path through the planets and stars that the sun follows

It takes a certain amount of energy to change a sample of liquid to gas, if it is assumed that the substance can exist in both states. The quantity varies for different substances and is called the

Heat of vaporization or enthalpy Amount of energy needed to turn a given quantity of a substance into a gas

A pond ecosystem has sharp boundaries at the shorelines . The sharp boundary of an ecosystem is known as a

Ecotone

The fissile of a fish skeleton is found in a limestone bed. The fish most likely belonged to the class

Osteichthyes Since soft tissues would not fossilize well it would be unlikely to find fossil if a cartilaginous fish

Which of the following statements about cells is true and not true

Only plant cells have cell walls All cells have cell plasma membrane

When refraction occurs part of a wave

Slows down before another part

A bottle with a message is tossed into the ocean off the shore of Siberia in the Sea of Okhotsk where can it be expected to wash ashore

The bottle will drift eastward until it will ride the Kuroshio current to the North Pacific Drift and was ashore on the west coast of North America

Rea Practice Test 2 Flashcards

(94 cards)