Sperm require lots of energy and this is generated by mitochondria located within the _______________
Fill in the blank(s) with the appropriate word(s)
Answer: Middle piece
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If a human is deprived of oxygen due to trauma or injury, why is the brain the first area of concern? Check all that apply.
_____ Because the heart can use glycerol and fatty acids as energy sources during the postabsorptive period. _____ Because the skeletal muscles can use glycerol and fatty acids as energy sources during the postabsorptive period. _____ Because we cannot function without the brain. _____ Because the byproducts of the use of glycerol and fatty acids as energy sources during the postabsorptive period by the brain are toxic.
Which of the following statements is false?
1.Neurons in the brain can interpret incoming action potentials only in certain ways. 2.Optic nerve impulses can only be interpreted as light. 3.Some sensory receptors do not convert a stimulus to nerve impulses. 4.The stronger the stimulus, the more action potentials are generated. 5.A strong stimulus activates many adjacent receptors, thereby increasing the number of action potentials and the level of awareness of the stimulus.
Which of the following is an undesirable
characteristic of the cuticle? a. It restricts the movement of water. b. It is transparent to sunlight. c. It coats the exposed surface of leaf epidermal cells. d. It restricts the movement of carbon dioxide. e. None of these is undesirable.
Lining of the ventral body cavities, lining of the heart and blood vessels, lining glomeruli, inner lining of the cornea, gas exchange surfaces in lungs
A. Pseudostratified columnar B. Simple columnar C. Simple cuboidal D. Simple squamous E. Stratified squamous F. Transitional