Online Access Free Introduction-to-Biology Practice Test

Which statement istrueabout the organisms on the vertebrate cladogram?

• A.Amphibians are four-limbed species but lack a bony skeleton.
• B.Only species with hair produce amniotic eggs.
• C.Birds are the only species that produce eggs with shells.
• D.Sharks and rays have vertebrae but lack a bony skeleton.

Caribou dig through snow to find food. Afterward, arctic foxes use the fresh holes to search for their own food. What interaction occurs?

• A.Predation
• B.Competition
• C.Parasitism
• D.Commensalism

Molecules withhydrophilic headsandhydrophobic tailsform round structures with tails facing inward when placed in water. What role do such molecules play in a cell?

• A.Store genetic information
• B.Catalyze chemical reactions
• C.Form membranes
• D.Store energy

Cells use ATP to power muscle contraction. During contraction, ATP is converted to ADP and inorganic phosphate. What is happening to energy in this conversion?

• A.Energy is being released.
• B.Energy is being destroyed.
• C.Energy is being created.
• D.Energy is being stored.

A student notes thatclub mossesform an outgroup, whileferns, gymnosperms, and flowering plantsform an ingroup on a plant cladogram (algal ancestor at the base). Whichbranching pointis the student considering?

• A.Embryo protection
• B.Leaves with branching veins
• C.Vascular tissue
• D.Seeds