Meiosis and Mitosis

The activities in the cell cyclle occur during specific phases. In which phase of the cell cycle is DNA replicated ?

• Mitosis

• G1 Phase

• G2 Phase

• S phase

This model of the cell cycle includes two arrows that each represent a process in the cycle.

What so the two arrows represent ?

• Arrow 1 represents phrophase and arrow 2 represent interphase

• Arrow 1 represents mitosis and arrow 2 represent meioisis

• Arrow 1 represents interphase and arrow 2 represent mitosis

• Arrow 1 represents meiosis and arrow 2 represent prophase

Tags

NGSS.HS-LS1-4

Part of the cell cycle is shown in this simplified model.

This part of the cell cycle is best described as the process that....

• Duplicates DNA

• Completes cell division

• maintains genetic homeostasis

• synthesizes new molecules

Tags

NGSS.HS-LS1-4

The diagram shows cells in different phases of mitosis. A student is trying to find a cell in a particular phase of mitosis. The student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each nucleus has one copy of each chromosome.

Which cell is the phase of mitosis that the student is searching for ?

• Cell 1

• Cell 2

• Cell 3

• Cell 4

Tags

NGSS.HS-LS1-4

Oncogenes are mutated forms of genes. Oncogenes can transform a cell into a tumor cell. Some tumor cells are benign, while others are malignant. How does the presence of an oncogene lead to the formation of a tumor ?

• ATP production is inhibited

• Cell division is unregulated

• Somatic Cell growth is inhibited

• Antibody activity is unregulated

Tags

NGSS.HS-LS3-2

A photomicrograph of opnion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow ?

• Prophase

• Metaphase

• Anaphase

• Telophase

Tags

NGSS.HS-LS1-4

Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite poles of the cell. During which cellular process does telophase occur ?

• Translation

• Interphase

• Transcription

• Mitosis

Tags

NGSS.HS-LS1-4

Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is....

• The same because it is created from the same DNA

• The same because chromosomes are copied prior to meiosis

• Different due to DNA replication prior to mitosis

• Different due to independent assortment during meiosis

Tags

NGSS.HS-LS3-2

In the early 1900s, Thomas Hunt Morgan was among the first scientist to contribute to the chromosome theory of heredity. Morgan's investigations into heredity in fruit flies led him to propose that the event represented in the diagram sometimes occurs.

Which statement about the even represented in the diagram is valid ?

• The event represents RNA translation in the smooth endoplasmic reticulum.

• The event takes place in bacterial cells.

• The event produces genetically identical daughter cells

• The even provides genetic diversity in eukaryotic cells.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Human body cells each have 46 chromosomes in their nuclei. Meiosis is necessary in order to ensure that each gamete produced in the human body has ___

• 12 chromosomes

• 23 chromosomes

• 46 chromosomes

• 92 chromosomes