No its not!
You can catch up if you put in effort and study hard, tell your biology teacher I will put my all of effort into catching up with others. Honestly, one month is not late at all. Many students dont study at all until their final exam arrives so have a good convo with your teacher.
From my experience I was behind my Computer Science course work in college and 6 months had already passed but I finished it off in a week with proper effort and got 70/70 in it.
So good luck! It'll be fine as long as you show your capability