In a human body, which of the following represents the highest level of structural organization?
a an atom in the lung.
b lung tissue
c the lungs
d the respiratory stystem

What is one function of the embedded proteins

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box