Are there deadlines for undergrads during Reading week?

I need to get ahold of a TA but I know they aren't required to answer during reading week. But I was told by a friend that there are not any deadlines DURING reading week and I'm not sure if that's true?

Anyways I also need help contacting a TA for an issue about a bio lab report but obviously I haven't been able to get in touch with anyone.

I am stressed.