Unit 1
Choose the word that matches the definition describing the quality of what is observed.
A. quantitative observation
B. assumption
C. Theory
D. scientific law
What is quantitative observation
Match the definition to the word the definition is the basic structural unit of all living things.
A. plants
B. cells
C. stars
D. water
What is cells
Match the definition with the word the definition is the genetic information for the cells of living organisms.
A. genes
B. trait
C. DNA
D. protein
What is DNA.
Choose the word that matches the definition. A method for determining the age of fossils and rocks which depends on the order of strata.
A. strata
B. absolute dating
C. relative dating
D. geological time scale
What is relative dating.
Choose the word that best matches the definition. A pattern of behavior that repeats at regular intervals.
A. learned behavior
B. behavioral cycle
C. dormancy
D. hibernation
What is behavioral cycle.
Choose the options that are components of a hypothesis. (Answer all that apply.)
A. the experimental results
B. a predicted outcome
C. what is being tested
D. a possible explanation
What is a predicted outcome. What is what is being tested. What is a possible explanation.
Select all that apply choose the unicellular organisms.
A. a bacterium
B. a parrot
C. a cat
D. yeast
What is yeast. What is a bacterium.
In an organism with two sets of chromosomes,_____.
Choose the option that correctly completes this statement.
A. the chromosomes are exact copies of each other
B. the chromosomes are slightly different
C. the chromosomes are completely different from each other
What is the chromosomes are slightly different.
Choose the option that is a given trait that's variation.
A. A cheetah runs faster than its siblings
B. A cheetah runs faster than the gazelles it hunts
C. Wolves rely on pack for hunting while jaguars are lone hunters.
D. A giraffe can graze on leaves that are higher than most other animals.
What is a cheetah runs faster than its siblings.
Choose the physical adaption that increases an organism's chances of finding food.
A. the armored plates of an armadillo
B. the bright black feathers of a male ostrich
C. the thin, needle-like beak of the hummingbird
D. the color of grasshoppers
What is the thin, needle-like beak of the hummingbird.
Choose the option that's about models and systems that is correct.
A. A model is an accurate representation of all characteristic of a system.
B. A system is a representation that shows some aspects of a model.
C. A system is an accurate representation of all characteristics of a model.
D. A model is a representation that shows some characteristics of a system.
What is a model is a representation that shows some characteristics of a system.
Choose the option that describes where most of the cellular respiration process occurs in a cell.
A. chloroplasts
B. mitochondria
C. cell membrane
D. nucleus
What is mitochondria.
Mendel crossed a tall pea plant with a short pea plant. All the offspring in the first generation were tall pea plants. Choose the option that explains how Mendel explained why all the offspring were tall pea plants.
A. Two factors affect the height trait of pea plants. One of the factors is dominant over the other.
B.. The offspring may have tall or short plants. Mendel did not do enough trials.
C. The genes for determining short plants were not transferred to the offspring.
What is two factors affect the height trait of pea plants. One of the factors is dominant over the other.
Choose what determines whether a trait is naturally selected.
A. Whether the organism prefers to have that trait
B. Whether humans find the trait preferable
C. Whether the trait is more likely to be passed on
D. Whether it brings an organism closer to its ideal shape
What is whether the trait is more likely to be passed on.
A bird builds a nest on a tree branch. The nest serves as a safe place to keep the bird's eggs. The tree does not benefit from the nest, but it is not armed from this relationship. What type of relationship does the bird and the tree have.
A. predator-prey
B. mutual
C. competitive
D. commensal
What is commensal.