A hole in the heart is actually an opening in the wall dividing the left and right sides of the heart. This wall is called the septum. This defect in the septum causes the deoxygenated blood from the right side to mix with the oxygenated blood from the left side. Propose some effects that would result from a hole in the heart.
You're not going to have as much energy because you won't have as much oxygen

There is no short answer.

Explanation:

The effects of having a hole in the heart and it's initial effect of the oxygenated and the deoxygenated blood mixing, can cause shortness of breath, less energy during any physical activity since the amount of oxygenated blood going to the lungs is lower. This also can be heard with a stethoscope when listened.

I hope this answer helps.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.