The development of multicellular organisms likely originated from ____
a. colonies of unicellular organisms of the same species
b. endocytosis of other cells followed by mitosis
c. cooperation between different species of cells
d. colonies of numerous species of cells
e. endosymbiotic eukaryotes
ANSWER: a
You might also like to view...
What average global total fertility rate is needed for zero population growth?
A. 1 B. 2 C. 2.3 D. 2.59 E. None of the choices are correct
The study of which of the following diseases led to the discovery that DNA carries genetic
information? A. Pneumonia D. Spanish flu B. AIDS E. SARS C. Tuberculosis
In the accompanying figure, the structure labeled as 2:
a. responds to a lack of light. b. protects the stem tip as it moves through the soil. c. is the first structure to emerge from the seed during germination. d. is called the coleoptile. e. surrounds and protects the young shoot.
In humans, the thirst center is located in the ____.
A. adrenal cortex B. hypothalamus C. anterior pituitary D. pons E. thymus