What is the name of the tubules in true kidneys?
a. metanephridia
b. protonephridia
c. hepatic tubules
d. nephrons
Answer: d. nephrons
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A goiter is an enlarged form of which gland?
a. adrenal b. pancreas c. thyroid d. parathyroid e. thymus
Arnold was involved in a major traffic accident, and some of the nerves in his spinal cord were cut. What are his chances for a full recovery? Please explain your answer
What will be an ideal response?
Which of the following is responsible for the cohesive property of water?
(A) Hydrogen bonds between the oxygen atoms of two adjacent water molecules (B) Covalent bonds between the hydrogen atoms of two adjacent water molecules (C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule (D) Covalent bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule (E) Hydrogen bonds between water molecules and other types of molecules
Which statement regarding the human genome is false?
A) Long stretches of repetitive DNA are prominent at centromeres and ends of chromosomes. B) The human genome is smaller than that of the bacterium Haemophilus influenzae. C) Current estimates are that there are about 21,000 genes in the human genome. D) The human genome contains approximately 19% introns.