Question 1

Which of the following is the similarity between the primordial soup theory and panspermia?

Accepted Answer

Both theories proposed that life evolved from simple to complex.

Answer

Both theories proposed that life on Earth came from preexisting life.

Answer

Both theories proposed that life started from inanimate matter.

Answer

Both theories proposed that life came from another celestial object in space.

Question 2

What is the role of replicase?

Accepted Answer

It catalyzes the replication of the RNA molecule.

Answer

It increases the rate of formation of peptide bonds.

Answer

It slows down the production of the nucleic acid genome.

Answer

It builds up the carbohydrate units in nucleotides.

Question 3

What did Szostak infer from the results of his protocell experiment?

Accepted Answer

Early forms of life could have begun as a single RNA that evolved.

Answer

DNA molecule could replicate and undergo Darwinian evolution.

Answer

The simplest possible living cells were made from nucleic acid genome and a protein membrane.

Answer

Replicase is an enzyme that catalyzed its own replication.

Question 4

Which of the following describes microfossils?

Accepted Answer

fossils that contain remains of tiny plants and animals

Answer

small fossils that contain remains of humans and animals

Answer

all fossils that can only be identified using microscopes

Answer

fossils that contain remains of microorganisms

Question 5

Which of the following are the earliest forms of life?

Accepted Answer

prokaryotes

Answer

microfossils

Answer

stromatolites

Answer

nuclei

Question 6

Arrange the following organisms from simplest to most complex.

Accepted Answer

cyanobacteria,unicellular algae,sponge,plant

Question 7

What was the importance of photosynthesis in the evolution of lifeforms?

Accepted Answer

Photosynthesis produced more oxygen that allowed oxygen-breathing organisms to exist.

Answer

Photosynthesis allowed all eukaryotes to make their own food.

Answer

Photosynthesis used up energy from the sun to warm the atmosphere.

Answer

Photosynthesis increased the amount of carbon dioxide allowing plants to proliferate and evolve.

Question 8

Which of the following is the branch of biology that deals with the study of living organisms and relationships with each other and their environment?

Accepted Answer

ecology

Answer

zoology

Answer

genetics

Answer

microbiology

Question 9

Which of the following is a corrective action of the body to maintain homeostasis when the external temperature is too hot?

Accepted Answer

perspiration

Answer

raising skin hairs

Answer

shivering

Answer

contraction of blood vessels

Question 10

Arrange the following levels of organization from the simplest to the most complex.

Accepted Answer

cells,tissues,organs,organ systems,organism,population,community,ecosystem,biosphere

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