The relative densities of the water as solid and liquid differ from the subsequent densities of the other substances. The density of the solid form of water is less than the density of water in its liquid form. However, majority of other substances increases in density when they solidify. This is the reason that the ice (which is the solid form of water) floats on water (liquid form).
Hence, the correct answer is 'Water's solid form is less dense than solid form while the case in opposite in other substances'.
Answer:
B. Gene expression is influenced by high lactose levels in the environment.
Explanation:
The lactose operon (lac operon) functions for the metabolism and transport of lactose in several bacteria.
Gene expression is influenced by high lactose levels in the environment as genes are expressed in the presence of high level lactose and absence of glucose. High level lactose carry an activator protein called catabolite activator protein (CAP), which let the RNA polymerase do transcription of the operon.
Hence, the correct option is "B".
Answer:
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things.