Glial cells provide structural and chemical support to neurons
Indicate whether the statement is true or false
TRUE
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In what ways can biologists contribute to the challenges faced by humanity in the 21st century?
A. All of the answer options are correct. B. They can develop crops that yield more food in the face of changing environmental conditions. C. They can make predictions about how global change will impact species and communities. D. They can work with lawmakers to ensure that government policies are environmentally sound. E. They can develop new methods to fight diseases.
The reason that starvation during prenatal development raises the risk for cardiovascular and metabolic problems in adulthood is that
A) starvation before birth and cardiovascular and metabolic disorders are all caused by a single mutation. B) metabolism in the fetus shifts to preserve vital organs, accelerating weight gain in childhood. C) lack of nutrients damages the heart in the uterus. D) the child remembers the lack of nutrition in the uterus and eats too much.
Which organelle is most abundant in cardiac muscle cells?
A) Golgi complexes B) Plastids C) Lysosomes D) Mitochondria E) Smooth ER
What do you need to adjust on a light microscope if the slide is not centered over the light beam emanating from the condenser?
A) Objective lens B) Stage C) Course focus D) Diaphragm