Which component of weather describes the weight of the atmosphere pressing down on Earth? A) Air pressure
B) Air temperature
C) Precipitation
D) Wind direction

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.