Exam 19: The Origin of Life and the Evolution of Cells

In order for macromolecules to form, smaller molecules must be concentrated. All of the following have been proposed as ways for concentrating organic molecules EXCEPT?

If oxygen had been present at the beginning of organic evolution, one hypothesis suggests that

Stanley Miller's experiment

Oparin's theory of the origin of life on Earth was supported, in part, by an experiment performed by

The oldest fossils of eukaryotic cells are about ________ years old.

The oldest fossils are about ________ billion years old.

Early in the 1900s, Svante Arrhenius proposed the concept of

In the origin and development of the major types of living things, which of the following is necessary before any of the other events could take place?

Redi concluded from his experiment that

Which of the following supports the idea that eukaryotic cells were formed by the joining of different kinds of prokaryotic cells?

According to the endosymbiotic theory, ___________ evolved from free-living prokaryotic cells.

Miller's apparatus synthesized

All of the following support the idea that RNA may have been the first genetic material EXCEPT?

Currently ____________ is/are thought to have been the genetic material of the earliest cells.

The first terrestrial organisms are found in the fossil record at about _______ million years ago.

The first photosynthetic organisms probably

When we speculate about the origin of life from inorganic material it seems logical that several events or steps were necessary. Which of the following is not a part of these ideas?

The spontaneous formation of organic molecules does not happen today because they are

Microspheres

When comparing primitive Earth to modern Earth, we note that