Some areas of Earth are relatively

Which of the following do all cells in a multicellular organism have in common? a. they all express the same genes b. they all have the same proteins c. they all have the same mRNA d. they all have the same DNA

What do oarfish use to propel themselves through the water?

Riley is 3 years older than his sister. The sum of their ages if s represents Riley's sister's age is shown as A. 3s B. b s + 3 C. 2 (s + 3) D. 2s + 3

Many North American animal species migrated to the south during Pleistocene ice ages and returned to the north during interglacial periods. These observations are consistent with a. expanded physiological tolerance. b.

Does the following statement describe a function of dna, a function of rna, a function of both rna and dna, or either dna or rna?

Which of the following statements about the field of health psychology is most accurate? a. It does not define health as being the mere absence of disease. b. It focuses exclusively on positive psychology. c.

Science Which factor is the main difference between a cell nucleus and a nucleiod? A. size of the organelle B. arrangement of the cytoskeleton C. movement of the flagella D. presence or absence of a surrounding membrane

A scientist notices that a person has two recessive genes for a trait. This describes the person's A) phenotype B) genotype C) traits D) characteristics

Which area of the brain has been associated with sadness, anxiety, and depression?

How does a genotype differ from a genotype?