Biology Questions

Which of the following is a binomial> A) rhizosolenia B) diatom C) sapiens D) Nitzschia jouseae

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

An ancestral species and all its evolutionary descendants define a ____. A) genus B) ingroup C) clade D) outgroup

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

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

Which of the following prokaryotes aid digestion in cattle, deer, and other animals that obtain nutrition from cellulose? A) methanogens B) halophiles C) cocci D) dinoflagellates

The wing of a penguin is ___ the wing of a butterfly. A) superior to B) homologous to C) structurally identical to D) analogous to

Which of the following is NOT true? A) the great diversification of animals occurred during the Cambrian explosion B) the first organisms to colonize land were animals C) the evolution of multicellularity took place after the origin of the eukaryotes D) for most of biological history, life was confined to aquatic habitats

The prokaryotic group that tends to inhabit extreme environments belongs to the ___. A) bacteria B) monera C) protista D) arachea

The idea that life regularly arises from nonliving matter is referred to as ___. A) spontaneous generation B) endosymbiosis C) speciation D) biogenesis

Under what abiotic conditions can monomers spontaneously form polymers? A) in the presence of oxygen gas B) when ribozymes are present to catalyzed the reaction C) when water evaporates from a hot surface D) by biogenesis

Large amounts of oxygen gas appeared in Earths atmosphere about ___ years ago. A) 200 million B) 1.7 billion C) 2.7 billion D) 4.5 billion

Eukaryotes arose about ___ years after the first prokarytoes. A) 3.0 million B) 1.5 billion C) 3.5 billion D) 4.0 billion

The science of naming, identifying and classifying organisms is called ___. A) zoography B) phylogeny C) biogeography D) taxonomy

Spherical bacteria that occur in clusters are ___. A) bacilli B) sprilla C) streptococci D) staphylococci

What was the first stage of the process that led to the abiotic origin of life? A) origin of self-replicating molecules B) abiotic synthesis of polymers C) abiotic formation of pre-cells D) abiotic synthesis of monomers, such as amino acids and nucleotides

The absence of ___ in the primitive atmosphere was essential to the origin of life on Eath. A) CH4 B) O2 C) CO2 D) N2

The wing of a bald eagle is ___ the wing of a penguin. A) unrelated to B) convergent with C) analogous to D) homologous to

Graphically, the graduated model of speciation can be described as appearing as a ___. A) horizontal line with vertical branches B) W C) Y D) vertical line with horitzontal branches

Which of the following taxonomic levels is most inclusive? A) class B) family C) order D) genus