Most plant dry mass originates from:
A. oxygen
B. chlorophyll
C. carbon dioxide
D. water
E. soil minerals
C. carbon dioxide
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When the optic vesicle contacts overlying ectoderm, developmental events are induced, leading to ____ in the
developing lens.
a. crystallin and keratin synthesis b. crystallin synthesis c. keratin synthesis d. degradation of crystalline and keratin e. apoptosis
Natural killer cells can kill infected or abnormal cells by the release of ________, which form pores in the target cell's membrane.
A) interferons B) fragmentins C) perforins D) antibodies E) complement proteins
An Rh-positive baby can cause an Rh-negative mother to produce antibodies against the Rh antigen. When is this a problem?
What will be an ideal response?
Golgi tendon organs are a type of cutaneous receptor for touch.
Answer the following statement true (T) or false (F)