Science Praxis 5005 (Life Science)
Exam with Complete Solutions
Living things - ANSWER-have physical entities and biological processes, such as
homeostasis cell division, cellular respiration, and photosynthesis.
What are nonliving things classified as? - ANSWER-inanimate
Cell theory - ANSWER-(biology) the theory that cells form the fundamental structural
and functional units of all living organisms
What are the three components that make up cell theory? - ANSWER-1. All living things
are composed of cells
2. The cell is the smallest unit of life
3. All cells come from pre-existing cells.
What is the organization of life? - ANSWER-cell, tissue, organ, organ system, organism
Prokaryote - ANSWER-A unicellular organism that lacks a nucleus, mitochondria, or any
other membrane-bound organelle.
What floats freely throughout the prokaryote cell? - ANSWER-DNA
What did Gregor Mendel show? - ANSWER-when a true-breeding yellow pea (YY) and
a true-breeding green pea (yy) were crossbreed, their offspring always produced yellow
seeds.
Metamorphosis - ANSWER-the process of transformation from an immature form to an
adult form in two or more distinct stages. There are two types
Complete metamorphosis - ANSWER-the insect goes through four stages: egg, larva,
pupa, and imago
What is an example of complete metamorphosis? - ANSWER-a caterpillar changes
completely into something else: a butterfly
Incomplete metamorphosis - ANSWER-the insect hatches from an egg and then goes
through several nymphal stages
, What is an example of incomplete metamorphosis? - ANSWER-grasshoppers gradually
get bigger, but they do not change into something else. Each stage of growth looks like
a bigger version of the original stage
Evolution - ANSWER-a type of change that happens over thousands of years
What do organisms not do? - ANSWER-evolve
Adaptation - ANSWER-the distribution of traits in the population that is matched to and
can change with environmental conditions.
Natural Selection - ANSWER-Developed by Charles Darwin and Alfred Russel Wallace.
A process in which individuals that have certain inherited traits tend to survive and
reproduce at higher rates than other individuals because of those traits.
Mutations - ANSWER-changes in the DNA molecule caused by mistakes during cell
division or exposure to environmental factors
What must all organisms be all to do? - ANSWER-grow, reproduce, and maintain stable
internal conditions even when the world and environment around them change.
What is the behavior of individual organisms influenced by? - ANSWER-internal cues
(hunger and internal temperature) and external cues (changes in the environment)
Homeostasis - ANSWER-The tendency to maintain a stable, relatively constant internal
environment.
Cold-blooded - ANSWER-Animals that have a body temperature varying with that of the
environment
What are some cold-blooded animals? - ANSWER-amphibians, reptiles, fish, and
insects
Warm-blooded - ANSWER-Animals that maintain a constant body temperature,
regardless of the temperature in the environment.
What are some types of warm-blooded animals? - ANSWER-mammals and birds
Vertebrates - ANSWER-animals that have a backbone
Invertebrates - ANSWER-Animals without backbones
Open Circulatory System - ANSWER-the blood is pumped into the body cavity and is
not enclosed in blood vessel
Exam with Complete Solutions
Living things - ANSWER-have physical entities and biological processes, such as
homeostasis cell division, cellular respiration, and photosynthesis.
What are nonliving things classified as? - ANSWER-inanimate
Cell theory - ANSWER-(biology) the theory that cells form the fundamental structural
and functional units of all living organisms
What are the three components that make up cell theory? - ANSWER-1. All living things
are composed of cells
2. The cell is the smallest unit of life
3. All cells come from pre-existing cells.
What is the organization of life? - ANSWER-cell, tissue, organ, organ system, organism
Prokaryote - ANSWER-A unicellular organism that lacks a nucleus, mitochondria, or any
other membrane-bound organelle.
What floats freely throughout the prokaryote cell? - ANSWER-DNA
What did Gregor Mendel show? - ANSWER-when a true-breeding yellow pea (YY) and
a true-breeding green pea (yy) were crossbreed, their offspring always produced yellow
seeds.
Metamorphosis - ANSWER-the process of transformation from an immature form to an
adult form in two or more distinct stages. There are two types
Complete metamorphosis - ANSWER-the insect goes through four stages: egg, larva,
pupa, and imago
What is an example of complete metamorphosis? - ANSWER-a caterpillar changes
completely into something else: a butterfly
Incomplete metamorphosis - ANSWER-the insect hatches from an egg and then goes
through several nymphal stages
, What is an example of incomplete metamorphosis? - ANSWER-grasshoppers gradually
get bigger, but they do not change into something else. Each stage of growth looks like
a bigger version of the original stage
Evolution - ANSWER-a type of change that happens over thousands of years
What do organisms not do? - ANSWER-evolve
Adaptation - ANSWER-the distribution of traits in the population that is matched to and
can change with environmental conditions.
Natural Selection - ANSWER-Developed by Charles Darwin and Alfred Russel Wallace.
A process in which individuals that have certain inherited traits tend to survive and
reproduce at higher rates than other individuals because of those traits.
Mutations - ANSWER-changes in the DNA molecule caused by mistakes during cell
division or exposure to environmental factors
What must all organisms be all to do? - ANSWER-grow, reproduce, and maintain stable
internal conditions even when the world and environment around them change.
What is the behavior of individual organisms influenced by? - ANSWER-internal cues
(hunger and internal temperature) and external cues (changes in the environment)
Homeostasis - ANSWER-The tendency to maintain a stable, relatively constant internal
environment.
Cold-blooded - ANSWER-Animals that have a body temperature varying with that of the
environment
What are some cold-blooded animals? - ANSWER-amphibians, reptiles, fish, and
insects
Warm-blooded - ANSWER-Animals that maintain a constant body temperature,
regardless of the temperature in the environment.
What are some types of warm-blooded animals? - ANSWER-mammals and birds
Vertebrates - ANSWER-animals that have a backbone
Invertebrates - ANSWER-Animals without backbones
Open Circulatory System - ANSWER-the blood is pumped into the body cavity and is
not enclosed in blood vessel
