Garrod first proposed that:a
metabolic defects were due to the lack of an enzyme.
b. metabolic defects were due to excess enzyme production.
c. metabolic defects were due to chromosomal changes.
d. mutations were heritable.
e. metabolic defects did not occur in humans.
a
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Phylogenetic trees are usually constructed using either a distance-based ________ approach, or a characteristic ________ approach.
Fill in the blank(s) with the appropriate word(s).
How was the virus detected?
A. by the presence of viral proteins B. by the presence of double-stranded RNA C. by the presence of antibodies to the virus D. by signs of infection E. by the ability to grow at 65°C
If basal metabolism drops, which anterior pituitary hormone is released to stimulate the thyroid gland to produce thyroxine?
A) TSH B) FSH C) ADH D) ACTH E) Prolactin
To diagnose and treat a disease, a doctor must evaluate the patient's body at multiple levels of organization. Identify the level of organization relevant to each stage of the process described below.(1) As part of Fred's annual physical, the doctor examined his skin, fingernails and hair for signs of disease. Noticing an unusual lesion on his neck, the doctor referred Fred to a dermatologist.(2) Upon observing the lesion, the dermatologist said, "Yes, this looks like it could be a squamous cell carcinoma, a tumor in the epidermis of the skin."(3) The dermatologist carefully examined all of Fred's skin for signs of additional tumors, but did not find any.(4) The dermatologist removed the lesion and sent it for a biopsy. Under the microscope, the pathologist saw some cells with abnormal
morphology and confirmed a diagnosis of squamous cell carcinoma. However, he noted that the margins of the lesion were clear of abnormal cells, and the tumor had been successfully removed. A. organism, cell, tissue, organ B. organ system, tissue, organ, cell C. organism, cell, organ system, tissue D. organ system, organ, tissue, cell