Biology Questions

What is the name given to the process by which a larva develop into an adult? A) neurulation B) metamorphosis C) gastrulation D) morphogenesis E) organogenesis

___ have radial symmetry. A annelids B roundworms C sponges D cnidarians E flatworms

Which of the following are most closely related to plants? A) red algae B) green algae C) brown algae D) cellular slime molds

Humans are chordates. Which animal group is most closely related to chordates? A cnidarians B molluscs C arthropods D echinoderms E annelids

Which of the following is a colonial form of green algae? A) plasmodium B) giardia C) volvox D) paramecium

Flatworms are similar to cnidarians in that both ___. A) have true tissues B) include many parasitic species C) exhibit bilateral symmetry D) lack a gastrovascular cavity E) have pseudocoeloms

___ are responsible for toxic red tides. A) plasmodial slime molds B) red algae C) dinoflagellates D) diatoms

___ is an example of bioremediation. A) Cyanobacteria converting atmospheric nitrogen to a form that plants can use B) the use of an autoclave to kill endospores C) a dinoflagellate bloom causing massive fish kills D) the use of prokaryotes to treat sweage

Eukaryotes that are not fungi, animals, or plants are classified in a "catch all" category called A) seaweeds B) bacteria C) protists D) archaea

Prokaryotes reproduce by means of ___. A) binary fission B) meiosis C) mitosis D) budding

You discover a unicellular organism that moves by what appear to be pseudopodia. You conclude that this organism is ___. A) either a type of ciliate, or a type of amoeba, or a type of flagellate, or a type of apicomplexan B) a type of alga C) either a type of ameoba or a type of slime mold D) a type of bacterium

The common ancestor of all animals is likely to have a ___. A) sponge B) virus C) colonial, ciliated protist D) colonial, flagellated protist E) colonial, flagellated bacterium

Inward folds of the plasma membrane of a prokaryotic cell produced the ___ of eukaryotic cells. A) endomembrane system B) chloroplasts C) mitochondria D) nuclear envelope and DNA

Food poisoning from Salmonella occurs because of A) extremophile conditions B) an exotoxin secreted by the bacteria C) easy transmission between people living in close contact D) an endotoxin found in the outer membrane of Salmonella bacteria

According to the theory of endosymbiosis, which organelle evolved from small prokaryotes that established residence within other, larger prokaryotes? A) Golgi apparatus and endoplasmic reticulum B) vacuoles and lysosomes C) centrioles and ribosomes D) mitochondria and chloroplasts

Whose experiments demonstrated that, given the conditions of the primitive Earth, biological monomers could arise spontaneously? A) Miller and Urey B) Margulis C) Watson D) Darwin

Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist? A) protozoans B) slime molds C) seaweeds D) dinoflagellates

All organisms that photosynthesize fit into which nutritional category? A) photoautotrophs B) photoheterotrophs C) chemoautotrophs D) chemoheterotrophs

Bacilli are ___ prokaryotes. A) spherical B) spiral C) rod-shaped D) comma-shaped

Why is RNA thought to have been the first genetic material? A) primitive organisms, such as some viruses, have RNA as their genetic material B) RNA has been found on meteorites; DNA has not C) RNA is capable of self-replication; DNA is not D) RNA is structurally simpler than DNA