Which disorder is characterized by a lack of the protein dystrophin?

A) hemophilia
B) color-blindness
C) muscular dystrophy
D) Down syndrome
E) cystic fibrosis


Ans: C) muscular dystrophy

Biology & Microbiology

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Evaporative cooling is a process whereby __________ moving __________ molecules vaporize, thus

__________ large amounts of heat. a. slow; water; adding b. fast; water; removing c. slow; oxygen; adding d. fast; oxygen; removing e. fast; carbon dioxide; removing

Biology & Microbiology

Identify two environmental factors that affect the germination of seeds. Then list the adaptation(s) of

seeds to deal with each environmental factor. What will be an ideal response?

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Which of the following does NOT occur during the latent period of muscle contraction?

a. Myosin heads bind to actin filaments. b. Myofibrils shorten. c. Muscle cell membrane initiates an electrical impulse which travels into the muscle cell. d. Calcium is released from the sarcoplasmic reticulum. e. all of these

Biology & Microbiology

Which organelle contains almost all of the genetic material of the cell?

Nucleus Nucleolus Rough endoplasmic reticulum Cytoplasm

Biology & Microbiology