Which of these is not a structure found in prokaryotic cells? A. a defined nucleus B. ribosomes C. cytoplasm D. cell membrane

A person has been diagnosed with high blood pressure. a medication that can effectively serve to lower his blood pressure is one that:

A proto-oncogene is critical for a cell to respond to an external signal to divide. What would happen to a cell that sustains an inactivating mutation in this proto-oncogene?

Which of the following balances is affected by the local force of gravity?

Why would it be necessary for a muscle cell to have a higher percentage of mitochondria than other cells in the body?

Since any single diploid organism only has two alleles per gene in their nuclear genetic material, the gene pool for a population of that organism can only have two alleles occurring in it. Group of answer choices True False

Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely cause of these disorders. In what part of the brain is the tumor most likely located?

How to use light in energy to make glucose?

In prophase I of meiosis, crossing over results in

Why is salt so precious in the rain forest?

A human activity that could significantly decrease the amount of carbon dioxide in the air is (1) increasing the use of fossil fuel (2) controlling insect pests that eat stored grain (3) burning garbage and trash to generate electricity (4)