Organisms develop a normal morphology because cells can receive and interpret
A. extracellular positional information
B. intracellular positional information
C. extracellular and intracellular positional information
D. extracellular positional information, intracellular positional information, and signals from other developing organisms
E. signals from other developing organisms
Answer: C
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A) purple sulfur bacteria and dissimilative sulfur-reducers B) dissimilative sulfur-reducers and dissimilative sulfur-oxidizers C) nitrogen-fixing cyanobacteria and fungi D) nitrogen-fixing cyanobacteria and dissimilative sulfate-reducers
Which two tests are done for prostate cancer?
A. PSA, testicle self-examination B. digital rectal examination, PSA C. testicle self-examination, fecal occult blood test D. mammography, fecal occult blood test E. digital rectal examination, Pap test
________ is to transcription as ________ are to translation.
A. RNA polymerase; ribosomes B. RNA polymerase; RNA spliceosomes C. RNA spliceosome; ribosomes D. DNA polymerase; RNA polymerase E. DNA polymerase; ribosomes
Refrigeration is an effective germicidal method.
Answer the following statement true (T) or false (F)