Fruit flies have been used as research animals
Indicate whether the statement is true or false
T
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Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO2. This increases the effectiveness of
A) external respiration. B) internal respiration. C) carbon dioxide transport. D) hemoglobin synthesis. E) acid-base balance.
Energy flow through organisms is inefficient because
Energy is lost to heat as it is converted Energy changes from form to form and not all organisms can use the different types of energy Some molecules are larger and require more energy to convert them to a usable product
Proteins destined to become integral membrane proteins have a signal sequence.
Answer the following statement true (T) or false (F)
Which of the following is NOT true of the structure of long bones?
A. The periosteum surrounds the entire bone, even where there is articular cartilage. B. Spongy bone makes up the internal portions of the epiphyses. C. The diaphysis and surfaces of the epiphyses consist of compact bone. D. Long bones contain an epiphysis at both ends. E. All of the following are true of the structure of a long bone.