In the origin and development of the major types of living things, which of the following is necessary before any of the other events could take place?
A. Photosynthesis
B. Aerobic respiration
C. The formation of organic molecules
D. The formation of cells
C. The formation of organic molecules
You might also like to view...
Genotype is to _____ as phenotype is to _____
A) DNA base sequence; physical traits that are products of the proteins produced B) heredity; DNA base sequence C) gene regulation; translation D) transcription; amino acid sequence
According to one hypothesis, how is water tension in the leaves maintained to pull water up the xylem?
A. Water is pulled by capillary action into spaces in between the cell wall, much like a sponge. B. Water is pulled up through the xylem due to capillary forces. C. Water exits the stomata due to capillary forces. D. Water is pushed up the xylem due to high water pressure from the roots. E. Water is pushed down from the leaves to the roots during hot sunny days.
Noncoding RNAs include all types of RNA molecules except
A) tRNAs. B) rRNAs. C) HERVs. D) mRNAs.
A first aid for stingray injury is:
a. place the injured area in cold water or apply ice packs. b. pour ammonia over the injured area. c. place the injured area in hot water. d. apply MSG to the injured area. e. urinate onto the wound.