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membrane doesn't let any materials pass through it.

A. impermeable

B. impenetrable

C. permeable

D. semi-permeable

Which phrase best describes a plant that is an epiphyte

What must the cell have enough of in order to complete cell division?

Why is rhe statement "all life is made of cells" an example of a theory? Explain

What do cells need to store energy

DNA and RNA differ in all BUT the following ways. A) DNA is double-stranded, while RNA is single stranded B) RNA uses the sugar ribose in its backbone, while DNA uses deoxyribose C) DNA contains the base uracil, while RNA can move around the cell D)

The hellenistic philosophy advocating the avoidance of both joy and pain is called

What names did the ancient romans give to the planets that they knew of

Why is an organism's niche like a person's occupation? A) An organism makes "money" by working in its niche. B) A niche is a "company" that the organism has to work in. C) A niche is a "factory" where organisms build things.

After eating a carbohydrate-rich meal, the mammalian pancreas increases its secretion of * glucagon O throxine insulin oxytocin

2. The heart is classified as a (n)