The human heart is an organ that is made up of cells. not all of the cells that make up the heart are identical, however. what name is given to a group of similar cells that perform a special function and together make up an organ?
a) embryo
b) organelle
c) tissue

Tissue

Explanation:

Each cell type has a special feature that enables it to perform a particular function effectively. Thus, cells are said to be specialized to perform different functions. Groups of specialized cells are assembled together to form a tissue. Examples are muscle, skeletal and nervous tissues. Different tissues working together form organs like the heart, kidney and eyes

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.