A (blank)

is a single cell surrounded

by a protective shield.

Which two characteristics describe all animals?

A reactant that fits into the active site of an enzyme is called?

Which of the following is not a property of Hardy-Weinberg Equilibrium? random mating no migration in or out no genetic mutations a small, limited population

Base your answer on the diagram below and on your knowledge of biology. Which statement is a basic assumption from The Beaks of Finches lab? A) The type of beak indicates the type of food the finch eats. B) Different birds have different songs.

Why does geographic isolation cause speciation? O A. It decreases divergence between two populations. O B. It increases interbreeding between populations. O C. It prevents gene flow between populations. O D. It makes males unattracted to females.

Which of these vessels returns blood to the left atrium of the heart? A) pulmonary veins B) coronary sinus C) superior vena cava D) pulmonary trunk

Prokaryotes replicate and form two identical daughter cells using a process called

Because digital signals do not depend on amplitude or frequency differences to communicate information, they are more vulnerable to emi noise.

What are some characteristics of nervous tissue?

What enzyme is responsible for adding nucleotides to a growing DNA chain during replication