1.
The following is a picture of a cell. What type of cell is it?
Correct Answer
B. Animal cell
Explanation
The given picture is of an animal cell. This can be determined by looking at the presence of a nucleus, which is a defining characteristic of animal cells. Plant cells have a cell wall and chloroplasts, which are not visible in the picture. Prokaryotic cells, such as bacteria, do not have a distinct nucleus like animal cells. Therefore, the correct answer is animal cell.
2.
In this video, what is occurring?
Correct Answer
D. Mitosis
Explanation
The video is showing a process where cells are dividing and replicating to create two identical daughter cells. This process is called mitosis, which is a fundamental process in cell division. It is different from cellular respiration, photosynthesis, and meiosis, which are all unrelated processes in cellular biology.
3.
What is one difference between plant and animal cells?
Correct Answer
C. Plant cells have chloroplasts and animal cells do not
Explanation
Plant cells have chloroplasts and animal cells do not. Chloroplasts are specialized organelles found in plant cells that are responsible for photosynthesis, the process by which plants convert sunlight into energy. Chloroplasts contain chlorophyll, a pigment that gives plants their green color and is essential for capturing light energy. Animal cells, on the other hand, do not have chloroplasts as they do not perform photosynthesis. Animal cells obtain energy through the mitochondria, which is responsible for cellular respiration.
4.
The following is a picture of which kind of cell?
Correct Answer
B. Prokaryotic cell
Explanation
The given picture represents a prokaryotic cell. Prokaryotic cells are characterized by the absence of a nucleus and membrane-bound organelles. They are typically found in single-celled organisms such as bacteria and archaea. The lack of a defined nucleus can be observed in the picture, along with the absence of membrane-bound organelles such as mitochondria or endoplasmic reticulum. Therefore, the correct answer is a prokaryotic cell.
5.
What do prokaryotic cells and eukaryotic cells have in common?
Correct Answer
B. They both have DNA
Explanation
Prokaryotic cells and eukaryotic cells both have DNA. DNA is the genetic material that carries the instructions for the development, functioning, and reproduction of all living organisms. In both types of cells, DNA is responsible for storing and transmitting genetic information. Although prokaryotic cells do not have a true nucleus like eukaryotic cells, they still have a region called the nucleoid where the DNA is located. Eukaryotic cells have a distinct nucleus that houses the DNA, enclosed within a membrane. Regardless of these structural differences, both types of cells rely on DNA for their genetic information.
6.
Which organelle is responsible for storage?
Correct Answer
A. Vacuole
Explanation
The vacuole is responsible for storage in a cell. It is a membrane-bound organelle that stores various substances such as water, ions, nutrients, and waste products. Vacuoles are found in both plant and animal cells, but they are larger and more prominent in plant cells. They play a crucial role in maintaining cell turgidity, regulating osmotic balance, storing pigments, and storing toxins or waste materials. Therefore, the vacuole is the correct answer for the organelle responsible for storage.
7.
Which organelle contains the cell's DNA in a eukaryotic cell?
Correct Answer
D. Nucleus
Explanation
The nucleus is the correct answer because it is the organelle that contains the cell's DNA in a eukaryotic cell. The nucleus acts as the control center of the cell and houses the genetic material, which includes the DNA. This DNA contains the instructions for the cell's functions and characteristics. The other organelles listed (mitochondrion, lysosome, and ribosome) do not contain the cell's DNA.