A parent bacterial cell is able to survive in the presence of the antibiotic penicillin. Subsequent generations from this parent will be _______ penicillin.

1. resistant to
2.dependent on
3.killed by
4.vulnerable to

The correct answer is "1. resistant to" penicillin.

To determine this, we need to understand the concept of antibiotic resistance in bacteria. Antibiotic resistance occurs when bacteria develop the ability to survive or grow in the presence of an antibiotic that would normally kill or inhibit them. In this case, the parent bacterial cell is able to survive in the presence of penicillin, indicating that it has acquired resistance to this antibiotic.

To get this answer, we can look at the given information in the question. It states that the parent bacterial cell is able to survive in the presence of penicillin. This implies that the cell has developed some mechanism to resist the effects of penicillin. As subsequent generations of bacteria inherit genetic material from the parent cell, they are also likely to inherit the resistance genes, making them resistant to penicillin as well. Therefore, we can conclude that subsequent generations from the parent will be resistant to penicillin.