TEAS Science Practice Test #3

Question 1

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased.
The type of correlation between these two populations could best be described as

Accepted Answer

an inverse relationship.

Answer

a direct relationship.

Answer

a direct and indirect relationship.

Answer

no decisive relationship.

Question 2

The addition of a catalyst to a chemical reaction will have what effect?

Accepted Answer

Increase the rate at which the reaction takes place.

Answer

Increase the energy required for the reaction to take place.

Answer

Increase the time required for the reaction to take place.

Answer

Reduce the amount of products in the reaction.

Question 3

The pharynx is part of what body system?

Accepted Answer

respiratory

Answer

muscular

Answer

lymphatic

Answer

circulatory

Question 4

Which of the following is true about eukaryotic cells?

Accepted Answer

They contain mitochondria.

Answer

They do not contain lysosomes.

Answer

They contain one chromosome.

Answer

They contain one chromosome.

Question 5

What characteristic of an element determines its specific isotope?

Accepted Answer

Number of neutrons.

Answer

Number of protons.

Answer

Number of electrons.

Answer

Number of quarks.

Question 6

What is NOT true about RNA?

Accepted Answer

Its sugar is more reduced than DNA’s sugar.

Answer

It contains a sugar called ribose.

Answer

Thymine is not one of its base pairings.

Answer

It is unstable in alkaline conditions.

Question 7

Which of the following scenarios would NOT give a normal distribution?

Accepted Answer

The percentage of toxic wastes and pollution in the atmosphere vs. the lifespan of organisms in the location.

Answer

A distribution of the yearly income of families in the U.S.

Answer

The distribution of heights in a large sample of people.

Answer

A curve with 97% of the population within the first two standard deviations.

Question 8

In a cell, the Golgi apparatus is found in what location?

Accepted Answer

In the cytoplasm

Answer

Inside the nucleus

Answer

Inside the mitochondria

Answer

In the cell wall

Question 9

Which taxonomic rank is the next-smallest after Order?

Accepted Answer

Family

Answer

Phylum

Answer

Species

Answer

Genus

Question 10

Which of the examples below best exemplifies the idea of carrying capacity?

Accepted Answer

A population of deer increases exponentially, but then decreases due to starvation, then increases slightly again.

Answer

A population of mosquito decreases because of a lack of water available following a drought-stricken summer.

Answer

A population of roaches decreases due to exposure to an insecticide resulting in the extermination of roaches in an area.

Answer

A population of rabbits increases from 4 rabbits, to 25 rabbits to 100 rabbits in three months.

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased.The type of correlation between these two populations could best be described as

A scientist found that when an invasive species was introduced into a river, the population of salmon native to the region decreased.
The type of correlation between these two populations could best be described as