1.
What part of the cell is this?
Correct Answer
C. Mitochondrion
Explanation
The correct answer is mitochondrion. Mitochondria are membrane-bound organelles found in the cytoplasm of eukaryotic cells. They are often referred to as the "powerhouses" of the cell because they generate most of the cell's energy through the process of cellular respiration. Mitochondria have their own DNA and can replicate independently within the cell. They play a crucial role in various cellular processes, including metabolism and the production of ATP (adenosine triphosphate), which is the main energy currency of the cell.
2.
'us' or 'ion' at the end of the word means _____ of something.
Correct Answer
one
Explanation
The suffix 'us' or 'men' at the end of the word indicates the singular form or single instance of something.
3.
'i' or 'ae' or 'a' at the end of the word means _____ of something.
Correct Answer
more than one
Explanation
When 'i' or 'ae' or 'a' is added at the end of a word, it indicates the plural form of that word, meaning there is more than one of that thing. This is a common rule in many languages, including Latin and some Romance languages. For example, in Latin, "alumnus" means "student" in the singular form, but when 'i' is added at the end, it becomes "alumni," meaning "students" in the plural form. Similarly, in English, adding 's' to a word usually indicates plurality, but in certain cases, adding 'i' or 'ae' or 'a' can also serve the same purpose.
4.
What part of the cell is this?
Correct Answer
B. Vacuole
Explanation
The correct answer is vacuole. A vacuole is a membrane-bound organelle found in the cells of plants, fungi, and some protists. It is responsible for storing various substances such as water, ions, and nutrients. Vacuoles also play a role in maintaining cell turgidity and regulating cell volume. They can vary in size and can occupy a significant portion of the cell's volume.
5.
What is not a phase of mitosis?
Correct Answer
C. Interphase
Explanation
Interphase is not a phase of mitosis. Mitosis consists of four phases: prophase, metaphase, anaphase, and telophase. Interphase is the resting phase between cell divisions, where the cell prepares for the next round of division by growing, replicating its DNA, and carrying out normal cellular functions. It is not considered a part of mitosis because it does not involve the actual division of the cell's nucleus.
6.
What stage of mitosis is described here:
The chromosomes line up down the middle of the cell?
Correct Answer
D. Metaphase
Explanation
Metaphase is the correct answer because during this stage of mitosis, the chromosomes align and gather at the center of the cell, forming a single line called the metaphase plate. This alignment ensures that each daughter cell receives an equal number of chromosomes during cell division. In prophase, the chromosomes condense and the nuclear envelope breaks down. Anaphase is characterized by the separation of sister chromatids, while in telophase, the nuclear envelope reforms and the chromosomes begin to decondense. Therefore, the description provided matches the characteristics of metaphase.
7.
What stage of mitosis is described here:The nuclear membrane breaks apart and the centrioles migrate to the poles.
Correct Answer
D. Prophase
Explanation
In prophase, the nuclear membrane breaks apart and the centrioles migrate to the poles. This is the first stage of mitosis where the chromatin condenses into visible chromosomes and the spindle fibers begin to form. During this stage, the centrioles move to opposite ends of the cell and start to organize the spindle apparatus. The breakdown of the nuclear membrane allows the spindle fibers to interact with the chromosomes. Therefore, the given description aligns with the characteristics of prophase in mitosis.
8.
What stage of mitosis is described here:
The chromosomes pull apart and begin separation.
Correct Answer
B. Anaphase
Explanation
Anaphase is the correct answer because it is the stage of mitosis where the chromosomes, which have duplicated during the previous stages, separate and move towards opposite poles of the cell. This is achieved through the pulling apart of the sister chromatids by the spindle fibers. The chromosomes are then fully separated and begin to move towards the opposite ends of the cell, preparing for the final stage of mitosis, cytokinesis.
9.
What stage of mitosis is described here:
The cell has split creating two daughter cells.
Correct Answer
B. Cytokinesis
Explanation
Cytokinesis is the stage of mitosis described here because it is the process in which the cell divides into two daughter cells. During cytokinesis, the cytoplasm of the parent cell is divided, resulting in the formation of two separate cells. This stage occurs after the chromosomes have separated and moved to opposite ends of the cell during anaphase and telophase. Therefore, cytokinesis is the correct answer as it specifically refers to the physical splitting of the cell into two daughter cells.
10.
What stage of mitosis is described here:
The nuclear membrane begins to come back together.
Correct Answer
D. Telephase
Explanation
During telophase, the nuclear membrane starts to reform around the separated chromosomes. This marks the end of mitosis and the beginning of cytokinesis, where the cytoplasm divides to form two daughter cells.