Exam 1: Introduction to the Study of Cell and Molecular Biology

Which term is now used to describe the three distinct evolutionary lines proposed by Carl Woese and his colleagues?

Acquisition of cyanobacterium-like cells by an early heterotrophic anaerobe changed the cell's ability to _______________. (Select all correct choices)

Likely potential benefits from research using induced pluripotent stem cells include: (Select all correct choices)

Types of stem cells include: (Select all correct choices)

How have scientists attempted to create a porous scaffold for tissue engineering? (Select all correct choices)

Virtually all chemical changes that take place in cells require ________, molecules that greatly increase the rate at which a chemical reaction occurs.

Potato spindle-tuber disease, which causes potatoes to become gnarled and cracked, is caused by an infectious agent consisting of a small circular RNA molecule that totally lacks a protein coat. These infectious agents are thought to exert their effects by interfering with the cell's normal path of gene expression. Such an infectious agent is known as __________.

Which of these terms describes an organism which metabolizes by using oxygen and builds cellular materials from other organic compounds?

Which of these pairs of life forms are considered to be most closely related?

Volvox possesses enlarged cells called _____________ which have a reproductive function.

You find a single-celled organism which you believe is a new eukaryotic life form. Which features might it possess if it is average in most of its characteristics? (Select all correct choices)

The supergroup containing fungi is __________________.

Who was the first person to name what he thought were single cells?

According to the text, in which environments have bacteria been isolated? (Select all correct choices)

Which of these is a man-made biodegradable polymer?

You are conducting an experiment by trying to reproduce the work performed in 1891 by Hans Driesch, a German embryologist. Working with a fertilized sea urchin egg, you allow it to complete the first cell division after fertilization. You then carefully separate the two cells of the embryo and allow their development to continue. Based on Driesch's experiment, which result below would you expect to happen?

Evidence of prokaryotes in the fossil record precedes eukaryotic cells by:

The rapidity and cost-efficiency of DNA sequencing has made it possible to sequence virtually all of the genes present in the microbes of a given habitat. This generates a collective genome for that habitat, which has come to be called _________.

Usually, a virus infects a cell and arrests the normal synthetic activities of the host, redirecting the cell to use its available materials to manufacture viral nucleic acids and proteins, which assemble into new viruses. Ultimately, the infected cell ruptures and releases a new generation of viral particles that can infect neighboring cells. This type of infection is called _________ infection.

Which statement is NOT correct regarding Archaea?