Which of the following would occur if cells did not have enzymes? A. Cells would not have any chemical reactions taking place.
B. Cells would have some chemical reactions, but not enough to support life processes.
C. Reactions in cells would be too slow to sustain life.
D. Reactions in the cells would be prevented from producing needed products at the right time.

What is the period of cell life when it is conducting

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

What is used as a template during replication? a- mrna b- trna c- rrna d- dna