Which organ system is not functional until birth and must become fully functional immediately?
A) excretory system (kidneys)
B) respiratory system
C) cardiovascular system
D) muscular system
E) skeletal system
B
You might also like to view...
You are part of a research team trying to sequence the genome of bacterial species X, which has a genome size of 2.2 Mb. You plan to use shotgun DNA sequencing and want to sequence at least 99% of the genome. How many Mb of DNA should you sequence?
A. 10.13 B. 4.61 C. 0.01 D. 9.02 E. 2.18
Which of the following is NOT true?
a. Acids donate hydrogen ions. b. In a neutral solution, the amounts of hydrogen and hydroxyl ions are equal. c. Salts have no function in cells. d. Bases accept hydrogen ions.. e. .7.0 represents a neutral pH.
A drug that inactivates acetylocholinesterase
a. stops the release of ACh from presynaptic endings b. prevents the attachment of ACh to its receptor c. increases the ability of ACh to stimulate postsynaptic cells d. all of these are correct
The central dogma of biology can be stated as
A. DNA? RNA? proteins. B. RNA? DNA? proteins. C. DNA? proteins? RNA. D. proteins? RNA? DNA.