Why are cells considered to be the smallest unit of life?
A. Because you need a microscope to see them
B. Because a cell is the smallest thing that carries out all the functions of life
C. Because they have an organized structure
D. Because all cells have a nucleus with DNA
Ans: B. Because a cell is the smallest thing that carries out all the functions of life
You might also like to view...
Evolution in a population of island iguanas can be caused by the following agent(s):
A) Natural selection B) Genetic drift C) Gene flow D) All of the above. E) Both natural selection and genetic drift.
True or false: In co-speciation, two groups of organisms speciate in response to each other and at the same time
A. true B. false
Which microscope would be the BEST selection for examination of a virus?
A. Confocal scanning laser microscope B. Atomic force microscope C. Dark-field light microscope D. Scanning electron microscope
Mammalian skin has both sebaceous and sudoriferous glands; theses glands respectively secrete what substances?
a. sebum, milk b. sebum, sweat c. sweat, sebum d. milk, sebum