How are red blood cells and neurons different?
A. Neurons contain DNA, but red blood cells do not.
Neurons need oxygen, but red blood cells do not.
Neurons are all the same size, but red blood cells are different sizes.
Neurons lack organelles, but red blood cells have organelles.
Neurons contain DNA, but red blood cells do not.
The correct answer is: Neurons lack organelles, but red blood cells have organelles.
Neurons are specialized cells found in the nervous system that transmit electrical signals throughout the body. They contain organelles, including a nucleus, mitochondria, and endoplasmic reticulum, which are necessary for their functions.
On the other hand, red blood cells, also known as erythrocytes, are responsible for carrying oxygen throughout the body. They lack organelles, including a nucleus, mitochondria, and endoplasmic reticulum, as these structures are expelled during their maturation process. This absence of organelles allows red blood cells to have more space to carry oxygen, making them more efficient in their oxygen-carrying function.
The correct answer is B. Neurons need oxygen, but red blood cells do not.
To determine the difference between red blood cells and neurons, we need to examine their characteristics.
First, let's consider option A - whether neurons contain DNA while red blood cells do not. To find the answer, we can research the structure and function of neurons and red blood cells. We will discover that while neurons do contain DNA (as they are part of the body's nervous system), red blood cells do not. However, this characteristic does not differentiate between the two, so option A is incorrect.
Moving on to option B - whether neurons need oxygen while red blood cells do not. To answer this question, we can search for information on the function of neurons and red blood cells. We will find that neurons need a constant supply of oxygen to function properly, while red blood cells are responsible for transporting oxygen to various parts of the body. As a result, option B correctly distinguishes between these two types of cells.
Next, option C states that neurons are all the same size, while red blood cells are of different sizes. To determine if this statement is true, we can research the size characteristics of neurons and red blood cells. We will find that neurons vary in size, with different types of neurons having different dimensions. Red blood cells, on the other hand, are relatively uniform in size. Therefore, option C is incorrect.
Lastly, option D claims that neurons lack organelles while red blood cells have organelles. To confirm the validity of this statement, we can investigate the structures of neurons and red blood cells. We will discover that neurons are highly specialized cells that possess various organelles necessary for their function, such as mitochondria, endoplasmic reticulum, and Golgi apparatus. Red blood cells, in contrast, lack most organelles, including the nucleus. Therefore, option D is incorrect.
In conclusion, the correct answer is B - Neurons need oxygen, but red blood cells do not.