Topic 2 - Keystone Sample Quiz
Cells & Cell structure Content
- 1.Which sequence of terms represents a decrease from the greatest number of structures to the least number of structures present in a cell?
- A.
nucleus → gene → chromosome
- B.
gene → nucleus → chromosome
- C.
Gene → chromosome → nucleus
- D.
Chromosome → gene → nucleus
- 2.
Some human body cells are shown in the diagrams below. These groups of cells represent different- A.
Tissues in which similar cells function together
- B.
Organs that help to carry out a specific life activity
- C.
Systems that are responsible for a specific life activity
- D.
organelles that carry out different functions
- 3.Genes involved in the production of abnormal red blood cells have an abnormal sequence of
- A.
ATP molecules
- B.
Amino acids
- C.
Sugars
- D.
Bases
- 4.Research has shown that certain body cells, known as stem cells, can develop into a variety of specialized cells. Various factors can cause stem cells to develop into different types of mature cells. These different types of mature cells result from
- A.
Different antibodies and mitotic cell division
- B.
Identical genetic codes and meiotic cell division
- C.
Different environments of the cells and the functioning of different parts of the genetic code
- D.
Similar steps in the development of the cells and a reduction in the number of chromosomes in each cell
- 5.Which statement is true of both mitosis and meiosis? Both are involved in asexual reproduction.
- A.
Both are involved in asexual reproduction.
- B.
Both occur only in reproductive cells.
- C.
The number of chromosomes is reduced by half.
- D.
DNA replication occurs before the division of the nucleus.
- 6.Down syndrome is a genetic disorder caused by the presence of an extra chromosome in the body cells of humans. This extra chromosome occurs in a gamete as a result of
- A.
An error in the process of cloning
- B.
An error in meiotic cell division
- C.
A gene mutation
- D.
Replication of a single chromosome during mitosis
- 7.
Part of embryonic development in a species is illustrated in the diagram below. Which set of factors plays the most direct role in controlling the events shown in the diagram?
- A.
Genes, hormones, and cell location
- B.
Antibodies, insulin, and starch
- C.
ATP, amino acids, and inorganic compounds
- D.
Abiotic resources, homeostasis, and selective breeding
- 8.Although all of the cells of a human develop from one fertilized egg, the human is born with many different types of cells. Which statement best explains this observation?
- A.
Developing cells may express different parts of their identical genetic instructions.
- B.
Mutations occur during development as a result of environmental conditions.
- C.
All cells have different genetic material.
- D.
Some cells develop before other cells.
- 9.What is the function of the cell membrane?
- A.
Packages what is made in the cell.
- B.
controls cell activities or contains the genetic codes.
- C.
Respiration or energy release or production of ATP
- D.
Regulates what enters and leaves the cell.
- 10.
Name the cellular organelle labelled C.
- A.
Cytoplasm
- B.
Mitochondria
- C.
Nucleus
- D.
Cell/plasma membrane
- 11.What is the main function of a vacuole in a cell?
- A.
Storage
- B.
Coordination
- C.
Synthesis of molecules
- D.
Release of energy
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