You find a new organism. It gains nutrients by secreting enzymes outside of itself and absorbing the digested product. It is eukaryotic and has a cell wall containing chitin. It reproduces with flagellated, swimming spores
You classify the new organism as a(n)
A) basidiomycota. B) ascomycota. C) mushroom. D) rumen fungus.
D
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What is the main benefit of having hemoglobin in the blood?
A. It increases the amount of oxygen that can be carried in the blood. B. It keeps oxygen separated from carbon dioxide within the blood. C. It increases the solubility of carbon dioxide in the blood plasma. D. It is an important source of iron for body cells. E. All of the answer options are correct.
Nucleosomes are best described as ____
a. prokaryotic DNA associated with nonhistone proteins b. eukaryotic DNA associated with histone proteins c. prokaryotic DNA associated with histone proteins d. eukaryotic DNA associated with nonhistone proteins e. associated histone and nonhistone proteins
How does external respiration differ from internal respiration?
A) External respiration is done only by some amphibians, which can exchange gases through their skin. B) External respiration refers to gas exchange between inhaled air and blood, whereas internal respiration refers to gas exchange between the blood and tissue fluids. C) External respiration involves gills, whereas internal respiration involves lungs. D) Internal respiration refers to gas exchange between inhaled air and blood, whereas external respiration refers to gas exchange between the blood and tissue fluids. E) External respiration refers to gas exchange, regardless of its location, whereas internal respiration refers to the cellular process that metabolizes glucose and results in the production of ATP.
Which type of tissue forms a communication and coordination system within the body?
A) nervous B) epithelial C) connective D) muscle