Unit 4 Vocabulary Quizs

What are limiting factors?

• Anything that restricts the number of organisms in a population.

• Factors that enhance the growth of a population.

• Elements that have no effect on population size.

• Conditions that only affect the environment.

What are the sides of the DNA molecule made of?

• Alternating deoxyribose sugars and phosphate groups.

• Alternating ribose sugars and nitrogenous bases.

• Single-stranded RNA and phosphate groups.

• Double-stranded proteins and deoxyribose sugars.

What is a mutation?

• a permanent change in the DNA sequence of an organism

• a temporary alteration in an organism's appearance

• a process of natural selection

• a type of genetic engineering technique

What is an acquired trait?

• A characteristic controlled by the environment.

• A genetic feature inherited from parents.

• A trait that is present at birth.

• A feature that cannot change over time.

What is the main job of DNA?

• To store and pass on genetic codes/information.

• To provide energy for cellular processes.

• To transport oxygen in the blood.

• To act as a catalyst in biochemical reactions.

What is a trait?

• A type of habitat where organisms live.

• A characteristic or feature of an organism (could be physical or behavioral).

• A method of reproduction in plants.

• A classification system for animals.

What is biodiversity?

• The variety of life on Earth.

• The number of species in a specific area.

• The total biomass of all organisms.

• The genetic variation within a species.

What is an adaptation?

• A change in an organism's color to blend in with its environment.

• A variation of a trait that makes an organism better suited to survive in its environment.

• A process by which organisms become extinct due to environmental changes.

• A method of reproduction that allows organisms to produce more offspring.

What is heredity?

• The process of evolution over generations.

• The passing of genetic traits from parent to offspring.

• The study of how organisms interact with their environment.

• The ability of an organism to adapt to its surroundings.

What is a dominant allele?

• An allele that will 'hide' the recessive allele.

• An allele that is always expressed in the phenotype.

• An allele that can only be expressed in a homozygous condition.

• An allele that has no effect on the phenotype.