Question 1

The marigold is a plant that completes its entire life cycle, from birth to reproduction to death, in one year. This kind of plant is known as a:

Accepted Answer

A) Perennial. 
B) Circadian type. 
C) Monogrowth. 
D) Annual. 
E) Cyclon. 
A) Perennial. 
B) Circadian type. 
C) Monogrowth. 
D) Annual. 
E) Cyclon. D

Question 2

Although plants produce oxygen as a byproduct of their metabolism, animals produce carbon dioxide as a waste product. What process in animals produces carbon dioxide?

Accepted Answer

A) Ingestion 
B) Duplication 
C) Respiration 
D) Reduction 
E) Generation 
A) Ingestion 
B) Duplication 
C) Respiration 
D) Reduction 
E) Generation C

Question 3

Humans and apes both have hand structures used to grab objects. Which structure is the equivalent of the hand in a whale?

Accepted Answer

A) Tail 
B) Flipper 
C) Snout 
D) Shoulder 
E) Underbelly 
A) Tail 
B) Flipper 
C) Snout 
D) Shoulder 
E) Underbelly B

Question 4

According to Mendel's theories on genetics, if a dominant allele is paired with a recessive allele, which trait will be expressed?

Accepted Answer

A) The dominant trait. 
B) The recessive trait. 
C) A mixture of the two traits. 
D) A mixture of the two traits, but with the dominant one taking precedence. 
E) Neither trait. 
A) The dominant trait. 
B) The recessive trait. 
C) A mixture of the two traits. 
D) A mixture of the two traits, but with the dominant one taking precedence. 
E) Neither trait.

Question 5

In a multicellular organism, what is the correct organization, from simplest to most complex system?

Accepted Answer

A) Organs, cells, organ systems. 
B) Cells, tissues, organs. 
C) Specialized cells, blood vessels, organ systems. 
D) Cells, organs, tissues. 
E) Organ systems, organs, tissues. 
A) Organs, cells, organ systems. 
B) Cells, tissues, organs. 
C) Specialized cells, blood vessels, organ systems. 
D) Cells, organs, tissues. 
E) Organ systems, organs, tissues.

Question 6

Water is able to enter the cell through:

Accepted Answer

A) Osmosis. 
B) Regulation. 
C) Active transport. 
D) Passive transport. 
E) Hydrosynthesis. 
A) Osmosis. 
B) Regulation. 
C) Active transport. 
D) Passive transport. 
E) Hydrosynthesis.

Question 7

Which of the following is always true of prokaryotes?

Accepted Answer

A) They have no cell membrane. 
B) They will have a flagella. 
C) They can eat other cells. 
D) They do not have a nucleus. 
E) All of the above are true. 
A) They have no cell membrane. 
B) They will have a flagella. 
C) They can eat other cells. 
D) They do not have a nucleus. 
E) All of the above are true.

Question 8

In the DNA transcription and translation process, DNA is copied into mRNA using RNA polymerase. The mRNA is then translated by:

Accepted Answer

A) The Golgi body. 
B) The mitochondria. 
C) The ribosomes. 
D) The cell membrane. 
E) The cytoplasm. 
A) The Golgi body. 
B) The mitochondria. 
C) The ribosomes. 
D) The cell membrane. 
E) The cytoplasm.

Question 9

Chromosomes are used to store DNA for reproduction. How many pairs of chromosomes do humans have?

Accepted Answer

A) 11 
B) 13 
C) 20 
D) 23 
E) 26 
A) 11 
B) 13 
C) 20 
D) 23 
E) 26

Question 10

Living organisms are classified into 5 kingdoms. Which of the following is not one of the kingdoms?

Accepted Answer

A) Animalia 
B) Fungi 
C) Plantae 
D) Eubacerae 
E) Protista 
A) Animalia 
B) Fungi 
C) Plantae 
D) Eubacerae 
E) Protista

Question 11

The primary difference between DNA and RNA is:

Accepted Answer

A) DNA uses thymine, whereas RNA uses uracil. 
B) DNA uses guanine, whereas RNA uses glucosamine. 
C) DNA has a single strand, whereas RNA has two strands. 
D) DNA is produced in animals, whereas RNA is produced in plants. 
E) RNA can exist in prokaryotes, but DNA cannot. 
A) DNA uses thymine, whereas RNA uses uracil. 
B) DNA uses guanine, whereas RNA uses glucosamine. 
C) DNA has a single strand, whereas RNA has two strands. 
D) DNA is produced in animals, whereas RNA is produced in plants. 
E) RNA can exist in prokaryotes, but DNA cannot.

Question 12

Since 1900, how many species have gone extinct?

Accepted Answer

A) Less than 5. 
B) Between 5 and 10. 
C) Between 10 and 20. 
D) Between 20 and 40. 
E) Greater than 40. 
A) Less than 5. 
B) Between 5 and 10. 
C) Between 10 and 20. 
D) Between 20 and 40. 
E) Greater than 40.

Question 13

In the human body, which of the following organs produces hormones?

Accepted Answer

A) Thyroid 
B) Heart 
C) Skin 
D) Muscles 
E) Bones 
A) Thyroid 
B) Heart 
C) Skin 
D) Muscles 
E) Bones

Question 14

The cell membrane is mostly made of:

Accepted Answer

A) Proteins 
B) Lipids 
C) DNA 
D) RNA 
E) Cytoplasm 
A) Proteins 
B) Lipids 
C) DNA 
D) RNA 
E) Cytoplasm

Question 15

Charles Darwin pioneered work that proposed a scientific theory stating that species evolved due to:

Accepted Answer

A) Rational order. 
B) Transmogrification. 
C) Natural selection. 
D) Uniform solidarity. 
E) Spontaneous combustion. 
A) Rational order. 
B) Transmogrification. 
C) Natural selection. 
D) Uniform solidarity. 
E) Spontaneous combustion.

Question 16

The Calvin Cycle is a metabolic cycle found in:

Accepted Answer

A) Fish. 
B) Yeast. 
C) Plants. 
D) Animals. 
E) Fungi. 
A) Fish. 
B) Yeast. 
C) Plants. 
D) Animals. 
E) Fungi.

Question 17

In plant photosynthesis, what two molecules are combined to create glucose (C6H12O6)?

Accepted Answer

A) Carbon dioxide and hydrogen 
B) Carbon dioxide and oxygen 
C) Water and carbon dioxide 
D) Water and oxygen 
E) Oxygen and methane 
A) Carbon dioxide and hydrogen 
B) Carbon dioxide and oxygen 
C) Water and carbon dioxide 
D) Water and oxygen 
E) Oxygen and methane

Question 18

Of the following organisms, which is highest on the food chain?

Accepted Answer

A) Turkey 
B) Tiger 
C) Snake 
D) Guppy 
E) Spider 
A) Turkey 
B) Tiger 
C) Snake 
D) Guppy 
E) Spider

Question 19

A species population can grow or decline over time. Which of the following is a way in which the population of a species could decline?

Accepted Answer

A) Drift 
B) Increased birth rate 
C) Emigration 
D) Increased food sources 
E) None of the above 
A) Drift 
B) Increased birth rate 
C) Emigration 
D) Increased food sources 
E) None of the above

Question 20

What is a heterotrophic organism?

Accepted Answer

A) An organism that has male and female genders. 
B) An organism that can photosynthesize. 
C) An organism unable to make its own food. 
D) A single-celled organism. 
E) A form of plant. 
A) An organism that has male and female genders. 
B) An organism that can photosynthesize. 
C) An organism unable to make its own food. 
D) A single-celled organism. 
E) A form of plant.

Exam 23: Life Science

The marigold is a plant that completes its entire life cycle, from birth to reproduction to death, in one year. This kind of plant is known as a:

Although plants produce oxygen as a byproduct of their metabolism, animals produce carbon dioxide as a waste product. What process in animals produces carbon dioxide?

Humans and apes both have hand structures used to grab objects. Which structure is the equivalent of the hand in a whale?

According to Mendel's theories on genetics, if a dominant allele is paired with a recessive allele, which trait will be expressed?

In a multicellular organism, what is the correct organization, from simplest to most complex system?

Water is able to enter the cell through:

Which of the following is always true of prokaryotes?

In the DNA transcription and translation process, DNA is copied into mRNA using RNA polymerase. The mRNA is then translated by:

Chromosomes are used to store DNA for reproduction. How many pairs of chromosomes do humans have?

Living organisms are classified into 5 kingdoms. Which of the following is not one of the kingdoms?

The primary difference between DNA and RNA is:

Since 1900, how many species have gone extinct?

In the human body, which of the following organs produces hormones?

The cell membrane is mostly made of:

Charles Darwin pioneered work that proposed a scientific theory stating that species evolved due to:

The Calvin Cycle is a metabolic cycle found in:

In plant photosynthesis, what two molecules are combined to create glucose (C6H12O6)?

Of the following organisms, which is highest on the food chain?

A species population can grow or decline over time. Which of the following is a way in which the population of a species could decline?

What is a heterotrophic organism?

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In plant photosynthesis, what two molecules are combined to create glucose (C₆H₁₂O₆)?