Biology

Which of the following is (are) unique to animals? A) cells that have mitochondr

Started by hummingbird

What do animals as diverse as corals and monkeys have in common? A) body cavity

Started by hummingbird

The Hox genes came to regulate each of the following in what sequence, from earl

Started by hummingbird

The last common ancestor of all animals was probably a A) unicellular chytrid. B

Started by hummingbird

Evidence of which structure or characteristic would be most surprising to find a

Started by hummingbird

Which statement is most consistent with the hypothesis that the Cambrian explosi

Started by hummingbird

Which of the following genetic processes may be most helpful in accounting for t

Started by hummingbird

Whatever its ultimate cause(s), the Cambrian explosion is a prime example of A)

Started by hummingbird

Fossil evidence indicates that the following events occurred in what sequence, f

Started by hummingbird

What is the probable sequence in which the following clades of animals originate

Started by hummingbird

Arthropods invaded land about 100 million years before vertebrates did so. This

Started by hummingbird

An adult animal that possesses bilateral symmetry is most certainly also A) trip

Started by hummingbird

In life cycles with an alternation of generations, multicellular haploid forms a

Started by Millan

Which group is incorrectly paired with its description? A) rhizariansmorphologi

Started by Millan

Biologists suspect that endosymbiosis gave rise to mitochondria before plastids

Started by Millan

Plastids that are surrounded by more than two membranes are evidence of A) evolu

Started by Millan

Living diatoms contain brownish plastids. If global warming causes blooms of dia

Started by Millan

Which of the following are actual mutualistic partnerships that involve a protis

Started by Millan

A gelatinous seaweed that grows in shallow, cold water and undergoes heteromorph

Started by Millan

You are designing an artificial drug-delivery "cell" that can penetrate animal c

Started by Millan

Similar to most amoebozoans, the forams and the radiolarians also have pseudopod

Started by Millan

You are given the task of designing an aquatic protist that is a primary produce

Started by Millan

You are given the task of designing an aerobic, mixotrophic protist that can per

Started by Millan

Which of the following is correctly described as a primary producer? A) oomycete

Started by Millan

Which of the following statements concerning protists is true? A) All protists h

Started by Millan