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Palaeontology and Evolutionary Biology Concepts Quiz

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Palaeontology and Evolutionary Biology Concepts Quiz

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Questions and Answers

What is a trace fossil?

The impression of an organism in a rock

Changes like a dark cloud cover a shiny sky

The preserved evidence of the activity of an organism (correct)

The last individual organism of a species dies

What is an isotope?

Members of a family of an element that all have the same number of protons but different numbers of neutrons (correct)

The preserved evidence of the activity of an organism

The remains or evidence of once-living organisms

The last individual organism of a species dies

What is a cast in terms of fossils?

The preserved evidence of the activity of an organism

The preserved evidence of the last individual organism of a species

The impression of an organism in a rock

The preserved evidence of the activity of an organism

What does evolution refer to?

The change over time in populations of related organisms Signup and view all the answers

What are the functions of the digestive system?

The functions of the digestive system include breaking down food into molecules the body can use, absorbing molecules into the blood and carrying them throughout the body, and eliminating wastes from the body. Signup and view all the answers

What are the roles of the mouth in the digestive system?

The mouth is responsible for both mechanical and chemical digestion. Mechanical digestion starts in the mouth with the physical breaking down of food by the teeth, while chemical digestion involves the breakdown of food molecules by saliva. Signup and view all the answers

What is peristalsis and where does it occur?

Peristalsis refers to the muscle contraction that moves food along the esophagus. It is a process that helps in the movement of food from the mouth to the stomach. Signup and view all the answers

Where does most of the chemical digestion take place in the digestive system?

Most of the chemical digestion takes place in the small intestine, where the absorption of nutrients from digested food into the bloodstream also occurs. Signup and view all the answers

What is the role of the large intestine or colon in the digestive system?

The large intestine or colon is responsible for absorbing water into the bloodstream and readying the remaining material for elimination from the body. Signup and view all the answers

Study Notes

Digestive System Functions

Breaks down food into molecules the body can use
Absorbs molecules into the blood and carries them throughout the body via the circulatory system
Eliminates wastes from the body via the excretory system

Roles of Organs in the Digestive System

Mouth

Mechanical digestion: physically breaks down food using teeth
Chemical digestion: breaks down food molecules using saliva

Esophagus

Muscular tube connecting the mouth to the stomach
Peristalsis (muscle contraction) moves food through the esophagus

Stomach

Most mechanical digestion takes place
Some chemical digestion occurs with the help of digestive juices (enzymes and acids)

Small Intestine

Most chemical digestion takes place
Absorbs nutrients from digested food into the bloodstream

Large Intestine (Colon)

Water is absorbed into the bloodstream
Remaining material is prepared for elimination from the body

Rectum

Waste material is collected prior to elimination from the body

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Description

Test your knowledge of key concepts in paleontology and evolutionary biology with this quiz. Match the definitions to the corresponding terms like fossil, evolution, isotopes, scale, and extinctions.