Cell Theory SC 912 L 14 1 Anton

Cell Theory SC. 912. L. 14. 1

Anton van Leeuwenhoek, who is considered to be the father of microscopy, began his work by learning to grind and polish lenses to increase their magnification. Which of the following best describes the impact of the invention of the microscope? A. It led to the discovery of cells and advanced our understanding of cellular processes. B. It led to the invention of the telescope and enabled us to view distant stars and planets. C. It led to the discovery of genetic trait inheritance patterns. D. It led to the invention of new techniques for creating medicines.

According to cell theory, where do all living cells come from? A. stem cells B. existing cells C. ribosomes D. gametes

Which of the following is considered to be the most basic unit of life? A. cells B. DNA C. cytoplasm D. ribosomes

According to modern cell theory, new cells arise from preexisting cells. This phenomenon has been observed using electron microscopes and light microscopes. Which of the following best explains why cell theory is still considered a theory and not a law, even when there is observable evidence to support it? A. Other aspects of cell theory do not have direct, observable evidence. B. Many of the aspects of cell theory aren't testable using scientific methods. C. The theory has not yet gained wide enough acceptance to become known as a law. D. Cell theory is a summary of a supported hypothesis, not D. Cell theory is a summary of a supported hypothesis, a generalized observation. not a generalized observation.

According to cell theory, how is hereditary information transmitted? A. It is passed from old cells to new cells during cell division. B. It is passed from gametes to body cells during fertilization. C. It is passed between daughter cells and parent cells during meiosis. D. It is passed between haploid cells and diploid cells during DNA replication.

Which of the following statements is NOT part of the modern cell theory? A. All cells come from pre-existing cells. B. Each cell has a unique chemical composition. C. The cell is the basic unit of life in an organism. D. All living things are made up of one or more cells.

A virus is a small, infectious agent that replicates itself inside the living cells of organisms. Which of the following explains why viruses, themselves, are not considered living things? A. Although viruses contain DNA, they do not have RNA. B. Viruses do not have the capability to undergo sexual reproduction. C. All living things are made up of one or more cells, and viruses aren't made up of cells. D. Viruses cause disease in living organisms, which can result in the death of that organism.

According to modern cell theory, the activity of an organism is dependent upon which of the following? A. the total activities of independent cells B. specialized cells that carry out metabolic processes C. the ability of cells to undergo both mitosis and meiosis D. cells known as gametes, which are involved in sexual reproduction

The cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge? A. All living things are made of cells. B. All cells come from other preexisting cells. C. Cells form through spontaneous generation. D. Cells are the basic structural and functional units of life.

Which of the following is NOT a principle of the cell theory? a) Very few cells reproduce b) Cells are the basic units of life. c) All living things are made of cells. d) All cells are produced by existing cells.

OUT OF 10 QUESTIONS • • • 1/10 = 10% 2/10 = 20% 3/10 = 30% 4/10 = 40% 5/10 = 50% • • • 6/10 = 60% 7/10 = 70% 8/10 = 80% 9/10 = 90% 10/10 = 100%