Carl Von Linneaus developed the system for classifying organisms.
A sperm and egg combine to make a zygote. (or fertilized egg)
So, the answer would be "A".
I hope this helps!
~cupcake
Selectivity permeable membrane and a scaffold for biochemical activity
Answer: it’s is proteins that are conjugated with a small number of monosaccharides or short typically branched chains of carbohydrates ( oligosaccharides). And one use of glycoproteins is they have something to do with immune system examples the molecules of as such as antibodies ( immunoglobulins) which they just interact with antigens.
Explanation: hope this help I take biology it can be tough.