In the hierarchy of living things, animals from flat worms (platyhelminthes) to humans have two or more interacting to perform a task accomplished by one or more
a) tissues; organs
b) cell types; organs
c) cell types; tissues
d) organs; organ systems

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?

Idon’t understand and i need the answer! you