Stem cells are cells that are capable of:
A. producing an entire organism.
B. producing the three germ layers.
C. differentiating into different cell types.
D. differentiating into a limited number of
different cell types.
E. differentiating into any type of cell.
C
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The _______ skeleton contains the bones of the skull, vertebrae, and ribs.
a. thoracic b. appendicular c. axial d. ossicle
Cushing’s syndrome can cause _____
a. low blood pressure b. impaired immunity c. osteoporosis d. liver failure e. weight loss
Inflammation of the protective coverings of the brain and spinal cord is known as ________
Fill in the blank(s) with correct word
Which statement about the phosphorus cycle is false?
A) The main abiotic reservoir for phosphorus is in the water. B) Plants release dissolved phosphate ions into the soil. C) Phosphates that drain from soils into the sea become part of new rock and will cycle back into living organisms. D) Guano can be used by farmers to add phosphorus to the soil.