6th Grade Science - Cell Division

1. What is the process by which a cell divides into two exact copies of itself called?

Mitosis is the process by which a cell divides into two exact copies of itself. During mitosis, the cell's DNA is replicated and then distributed equally into two daughter cells. This ensures that each daughter cell receives the same genetic information as the parent cell. Mitosis is a crucial process for growth, development, and tissue repair in multicellular organisms. It allows cells to reproduce and maintain the same genetic material, ensuring genetic stability and continuity.

Explanation

Mitosis is the process by which a cell divides into two exact copies of itself. During mitosis, the cell's DNA is replicated and then distributed equally into two daughter cells. This ensures that each daughter cell receives the same genetic information as the parent cell. Mitosis is a crucial process for growth, development, and tissue repair in multicellular organisms. It allows cells to reproduce and maintain the same genetic material, ensuring genetic stability and continuity.

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2. Instead of continuing to grow, cells _________ once they reach a certain size.

Die

Divide

Shrink

Explode

Cells divide once they reach a certain size. This is a natural process called cell division, where a single cell splits into two daughter cells. This allows for growth and replacement of damaged or old cells in the body. Once cells reach a certain size, they cannot continue to grow indefinitely, as it would lead to an imbalance and potential dysfunction. Therefore, they divide to maintain an appropriate size and ensure proper functioning of the organism.

Explanation

Cells divide once they reach a certain size. This is a natural process called cell division, where a single cell splits into two daughter cells. This allows for growth and replacement of damaged or old cells in the body. Once cells reach a certain size, they cannot continue to grow indefinitely, as it would lead to an imbalance and potential dysfunction. Therefore, they divide to maintain an appropriate size and ensure proper functioning of the organism.

3. The transfer of blood from one person to another is called a __________.

The transfer of blood from one person to another is referred to as a transfusion. This procedure involves taking blood from a donor and infusing it into a recipient to restore blood volume, replace lost components, or treat specific medical conditions. Transfusions are commonly performed in medical settings such as hospitals and clinics, and they play a crucial role in various medical interventions, including surgeries, treatments for blood disorders, and emergency situations where blood loss occurs.

Explanation

The transfer of blood from one person to another is referred to as a transfusion. This procedure involves taking blood from a donor and infusing it into a recipient to restore blood volume, replace lost components, or treat specific medical conditions. Transfusions are commonly performed in medical settings such as hospitals and clinics, and they play a crucial role in various medical interventions, including surgeries, treatments for blood disorders, and emergency situations where blood loss occurs.

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4. As a cell gets bigger, both its cell membrane and its _________ get bigger.

Volume

Membrane

Life processes

Energy

As a cell gets bigger, its volume increases. This is because volume is a measure of the amount of space occupied by the cell, and as the cell grows, it takes up more space. The cell membrane, on the other hand, may or may not increase in size as the cell grows. The cell membrane is responsible for controlling the movement of substances in and out of the cell, and its size may be influenced by the needs of the cell and the surrounding environment. However, the increase in volume is a more direct and consistent result of cell growth.

Explanation

As a cell gets bigger, its volume increases. This is because volume is a measure of the amount of space occupied by the cell, and as the cell grows, it takes up more space. The cell membrane, on the other hand, may or may not increase in size as the cell grows. The cell membrane is responsible for controlling the movement of substances in and out of the cell, and its size may be influenced by the needs of the cell and the surrounding environment. However, the increase in volume is a more direct and consistent result of cell growth.

5. As a cell grows larger it requires more and more energy and thus needs greater amounts of ________________?

As a cell grows larger, its metabolic demands increase. This means that the cell needs more energy to sustain its activities and functions. The primary source of energy for cells is glucose, which is obtained from the breakdown of sugar. Therefore, as the cell grows larger, it requires greater amounts of sugar or glucose to meet its increasing energy needs.

Explanation

As a cell grows larger, its metabolic demands increase. This means that the cell needs more energy to sustain its activities and functions. The primary source of energy for cells is glucose, which is obtained from the breakdown of sugar. Therefore, as the cell grows larger, it requires greater amounts of sugar or glucose to meet its increasing energy needs.

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