1.
What is the work of a Cell membrane?
Correct Answer
A. Surrounds and protects the contents of the cell.
Explanation
The cell membrane is responsible for surrounding and protecting the contents of the cell. It acts as a barrier, regulating the movement of substances in and out of the cell. It also plays a crucial role in maintaining the cell's internal environment by controlling the exchange of nutrients, ions, and waste products. Additionally, the cell membrane contains various proteins and receptors that facilitate communication and interaction with the external environment.
2.
The cytoplasm____
Correct Answer
C. Helps support all the other parts inside the cell, and it distributes materials such as oxygen and food to different parts of the cell.
Explanation
The cytoplasm helps support all the other parts inside the cell and distributes materials such as oxygen and food to different parts of the cell. This is because the cytoplasm is a gel-like substance that fills the cell and provides structural support. It also contains various organelles and is involved in many cellular processes such as metabolism, transportation, and cell division. Therefore, the correct answer is that the cytoplasm helps support all the other parts inside the cell and distributes materials to different parts of the cell.
3.
The Nucleus ____
Correct Answer
B. Controls the cell's activities. Controls what enters and leaves the Nucleus.
Explanation
The nucleus controls the cell's activities by regulating gene expression and directing the synthesis of proteins. It also controls what enters and leaves the nucleus through the nuclear envelope, which contains nuclear pores that selectively allow the passage of molecules. The nucleus houses the cell's genetic material and plays a crucial role in maintaining the cell's overall function and integrity.
4.
Which cell part is like a storage place for food, wastes, and other substances that can not be used right away?
Correct Answer
E. Vacuoles
Explanation
Vacuoles are cell parts that act as storage places for food, wastes, and other substances that cannot be used right away. They are responsible for storing and regulating various molecules and ions within the cell. Vacuoles also play a role in maintaining the cell's shape and providing structural support.
5.
____ has the job of forming a system of canals within the cytoplasm. It is like a train station.
Correct Answer
B. Endoplasmic Reticulum.
Explanation
The endoplasmic reticulum (ER) is responsible for forming a system of canals within the cytoplasm, similar to a train station. The ER is a network of membrane-bound tubules and sacs that is involved in the synthesis, folding, and transport of proteins and lipids. It plays a crucial role in maintaining the structural integrity of the cell and facilitating the movement of molecules within the cytoplasm. The analogy of a train station emphasizes the ER's function as a hub for the transportation of materials within the cell.
6.
What do the mitochondria do?
Correct Answer
A. It breaks down tiny food particles to release their chemical energy for the cell's activities.
Explanation
The mitochondria are responsible for breaking down tiny food particles to release their chemical energy for the cell's activities. They are often referred to as the "powerhouses" of the cell because they produce the majority of the cell's energy in the form of ATP (adenosine triphosphate). This process, known as cellular respiration, occurs within the mitochondria's inner membrane and provides the energy necessary for the cell to carry out its various functions and activities.
7.
Which cell organelle is known as the "powerhouse of the cell" due to its role in energy production?
Correct Answer
C. Mitochondria
Explanation
Mitochondria are often referred to as the "powerhouse of the cell" because they generate most of the cell's supply of adenosine triphosphate (ATP), which is used as a source of chemical energy. This process of energy production is known as cellular respiration, where mitochondria convert nutrients into ATP through a series of complex biochemical reactions.
8.
What is the Chloroplast's job?
Correct Answer
C. It's their job to make ChloropHyll by converting the sun's energy into food for the plant.
Explanation
The chloroplast's job is to make chlorophyll by converting the sun's energy into food for the plant. Chlorophyll is a pigment that is essential for photosynthesis, the process by which plants convert sunlight into energy. This process allows plants to produce glucose, which is used as a source of energy for growth and development. Therefore, the correct answer is that the chloroplast's job is to make chlorophyll and convert the sun's energy into food for the plant.
9.
What does the ribosome do to help the cell?
Correct Answer
B. Ribosomes are the sites of protein synthesis, where RNA is translated into protein. When cells need large numbers of proteins, they must first build numerous ribosomes. They also create building blocks for forming proteins.
Explanation
Ribosomes are responsible for protein synthesis in the cell. They translate RNA into protein and play a crucial role in building numerous ribosomes when cells require large amounts of proteins. Additionally, ribosomes create the building blocks necessary for forming proteins.
10.
Lysosomes:
Correct Answer
C. They dissolve bacteria, old cells, organelles, and any unwanted materials.
Explanation
Lysosomes are membrane-bound organelles that contain digestive enzymes. These enzymes are responsible for breaking down and digesting bacteria, old cells, organelles, and any unwanted materials in the cell. Therefore, the correct answer is that lysosomes dissolve these materials through their enzymatic activity.
11.
Nucleolus:
Correct Answer(s)
B. Instructions in DNA are copied here.
D. Works with ribosomes in the synthesis of protein.
Explanation
The nucleolus is a small, dense structure found within the nucleus of a cell. It is responsible for the production and assembly of ribosomes, which are essential for protein synthesis. The nucleolus also plays a role in the copying of DNA instructions, as it contains the necessary components for this process. Therefore, the correct answer is that the nucleolus works with ribosomes in the synthesis of protein and contains instructions in DNA that are copied here.
12.
What are theĀ 3 main things in a Nucleus?
Correct Answer
A. The Nucleolus, Nuclear Membrane, Chromatin.
Explanation
The correct answer is The Nucleolus, Nuclear Membrane, Chromatin. The nucleolus is a small, dense region within the nucleus that is responsible for the production of ribosomes. The nuclear membrane is a double-layered membrane that surrounds the nucleus, separating it from the cytoplasm. Chromatin refers to the DNA and proteins that make up the chromosomes within the nucleus. Cloroplast, Nuclear Membrane, Lysosmes are not main components of the nucleus, making them incorrect options.
13.
In what cell the cell wall is?
Correct Answer
B. Plant
Explanation
The cell wall is present in plant cells. Unlike animal cells, plant cells have a rigid cell wall made up of cellulose that provides structural support and protection. The cell wall acts as a barrier and helps maintain the shape of the cell. Therefore, the correct answer is Plant.
14.
In what cell are the Ribosomes?
Correct Answer
C. Both
Explanation
Ribosomes are present in both plant and animal cells. Ribosomes are small organelles responsible for protein synthesis. They can be found in the cytoplasm of the cell, as well as attached to the endoplasmic reticulum. Therefore, the correct answer is both.
15.
What cell is the Chloroplast in?
Correct Answer
A. Plant
Explanation
Chloroplasts are specialized organelles found in plant cells. They 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 allows them to absorb light energy. Since chloroplasts are unique to plant cells and not found in animal cells, the correct answer is "Plant."