Compared to those of humans, the erythrocytes in a frog are

Compared to those of humans, the erythrocytes in a frog are:

  1. Without nucleus but with haemoglobin
  2. Nucleated and with haemoglobin
  3. Very much smaller and fewer
  4. Nucleated and without haemoglobin

The correct answer is 2) Erythrocytes in frogs are nucleated and with hemoglobin. Unlike human erythrocytes (red blood cells), frog erythrocytes have nuclei, which is a characteristic difference between the two.

Erythrocytes, also known as red blood cells (RBCs), are responsible for carrying oxygen throughout the body. In humans, mature red blood cells lack a nucleus. This absence of a nucleus provides more space for hemoglobin, the protein that binds oxygen and transports it to tissues.

In contrast, in some animals like frogs, the erythrocytes or red blood cells do contain nuclei. These nuclei are retained even in the mature red blood cells. Despite having a nucleus, frog erythrocytes still perform the crucial function of carrying oxygen. However, the presence of the nucleus means that there’s less space available for hemoglobin compared to human red blood cells.

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