if memory cells are always present after the first exposure to a virus, then why do people get the flu every year?

The diving reflex may allow a person to survive extended periods of submersion in cold water secondary to: Select one: a. increases in the metabolic rate and oxygen demand. b. bradycardia and a slowing of the metabolic rate. c.

Even though algae can produce their own food through photosynthesis, they are not part of the Plantae kingdom. Select the reasons why.

Very long orgainic molecules that contain instructions that cells need to function arr called?

The table shows the commonly eaten foods of some organisms. Commonly Eaten Foods A. Vegetables, meat, chicken B. Insects, fruits, seeds C. Grasses, barks, twigs, acorn D.

Lipids are chemically most similar to: carbohydrates nucleic acids proteins amino acids

All of the following prevent pathogens from entering the human body except a. red blood cells b. tears c. mucus d. skin

All cells must have energy to function. Most of the energy used by the cells in your body is produced by cellular respiration. In cellular respiration, cells use_ to release energy stored in.?

In a certain state, electricity is generated by using the earths heat. Wells drilled and natural steam is taken out through pipes. This natural steam powers the generator and the electricity generated.

Which is the main source of energy that is shown in the equation?

Which is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation? free of known diseases cost-effective to raise same DNA as humans quick breeding