NATS 1675 HUMAN DEVELOPMENT
TEST 1 2025 QUESTIONS AND
ANSWERS
What are humans dependent on and why? - ....ANSWER ...-Their external
environment to obtain the requirements for life
How are bodies designed? - ....ANSWER ...-To obtain and use nutrients and
energy from their environment (and the organisms living there)
What are bodies? - ....ANSWER ...-A collection of atoms that are held
together by chemical bonds
What is the foundation for organizing a 3-Dimensional body? -
....ANSWER ...-The precise molecular structure (in which the molecules are
made by precise interactions of atoms)
How are atoms held together - ....ANSWER ...-Chemical bonds
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,How are body parts formed? - ....ANSWER ...-Atoms form molecules,
molecules interact to form cellular structures and cells, and cells interact to form
body parts.
How do emergent properties arise? Give an example - ....ANSWER ...-From
the arrangement and interactions of parts. I.e. capillaries transport blood, though
this property is not exhibited by individual endothelial cells that form capillaries
When do the body's structures and functions "emerge" - ....ANSWER ...-
During embryonic development
What are the four important biological molecules? - ....ANSWER ...-Lipids,
Carbohydrates, Proteins, and nucleic acids
What are the subunits of lipids and give an example - ....ANSWER ...-
Glycerol and fatty acids. I.e. fat
What are the subunits of carbohydrates and give an example -
....ANSWER ...-Monosaccharide. I.e. polysaccharide
What are the subunits of proteins and give an example - ....ANSWER ...-
Amino acid. I.e. polypeptide
What are the subunits of nucleic acids and give an example -
....ANSWER ...-Nucleotide. I.e. DNA, RNA
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, Why does food provide raw materials (the atoms and molecules)? (During
embryonic development and after birth) - ....ANSWER ...-During embryonic
development to form cells (and the body), and after birth to add to new cells and
the body during growth, and to replenish previously existing molecules that were
lost, used up, or destroyed
Why does food provide energy (within chemical bonds)? - ....ANSWER ...-
To maintain the molecular structures of cells (preventing chemical bonds from
breaking apart), and to drive cellular metabolism.
What is the main source of energy on earth? - ....ANSWER ...-Sunlight
energy
How does energy flow through an ecosystem? - ....ANSWER ...-In one
direction - Sun hits the surface of the earth, gets trapped by organisms (producers),
and is converted inter their bodies. (Some energy is lost to its surroundings as heat,
thus energy flows in one direction)
How do nutrients cycle? - ....ANSWER ...-From the environment to
organisms and eventually back to the environment - sunlight energy, water and
CO2 make carbs (which are their bodies), so nutrients are found within the plants
and are eaten by consumers where the nutrients are incorporated into their bodies,
and when the consumers die the nutrients are brought back into soil which plants
reuse.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
TEST 1 2025 QUESTIONS AND
ANSWERS
What are humans dependent on and why? - ....ANSWER ...-Their external
environment to obtain the requirements for life
How are bodies designed? - ....ANSWER ...-To obtain and use nutrients and
energy from their environment (and the organisms living there)
What are bodies? - ....ANSWER ...-A collection of atoms that are held
together by chemical bonds
What is the foundation for organizing a 3-Dimensional body? -
....ANSWER ...-The precise molecular structure (in which the molecules are
made by precise interactions of atoms)
How are atoms held together - ....ANSWER ...-Chemical bonds
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,How are body parts formed? - ....ANSWER ...-Atoms form molecules,
molecules interact to form cellular structures and cells, and cells interact to form
body parts.
How do emergent properties arise? Give an example - ....ANSWER ...-From
the arrangement and interactions of parts. I.e. capillaries transport blood, though
this property is not exhibited by individual endothelial cells that form capillaries
When do the body's structures and functions "emerge" - ....ANSWER ...-
During embryonic development
What are the four important biological molecules? - ....ANSWER ...-Lipids,
Carbohydrates, Proteins, and nucleic acids
What are the subunits of lipids and give an example - ....ANSWER ...-
Glycerol and fatty acids. I.e. fat
What are the subunits of carbohydrates and give an example -
....ANSWER ...-Monosaccharide. I.e. polysaccharide
What are the subunits of proteins and give an example - ....ANSWER ...-
Amino acid. I.e. polypeptide
What are the subunits of nucleic acids and give an example -
....ANSWER ...-Nucleotide. I.e. DNA, RNA
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, Why does food provide raw materials (the atoms and molecules)? (During
embryonic development and after birth) - ....ANSWER ...-During embryonic
development to form cells (and the body), and after birth to add to new cells and
the body during growth, and to replenish previously existing molecules that were
lost, used up, or destroyed
Why does food provide energy (within chemical bonds)? - ....ANSWER ...-
To maintain the molecular structures of cells (preventing chemical bonds from
breaking apart), and to drive cellular metabolism.
What is the main source of energy on earth? - ....ANSWER ...-Sunlight
energy
How does energy flow through an ecosystem? - ....ANSWER ...-In one
direction - Sun hits the surface of the earth, gets trapped by organisms (producers),
and is converted inter their bodies. (Some energy is lost to its surroundings as heat,
thus energy flows in one direction)
How do nutrients cycle? - ....ANSWER ...-From the environment to
organisms and eventually back to the environment - sunlight energy, water and
CO2 make carbs (which are their bodies), so nutrients are found within the plants
and are eaten by consumers where the nutrients are incorporated into their bodies,
and when the consumers die the nutrients are brought back into soil which plants
reuse.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
