I believe it's D don't take my word for it.
Answer:
cell wall
Explanation:
the cell wall helps fighting any bacteria that tries to infect the cell itself.
Answer:
Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.
Explanation:
