The endosymbiotic theory states that ___________; one piece of evidence supporting this theory is the fact that ___________.
A. mitochondria and chloroplasts originated as ingested prokaryotes ... mitochondria and chloroplasts have their own DNA
B. two organisms live in close association ... the two participating individuals are two different species
C. the genomes of complex animals came in part from the genomes of invading pathogens ... the human genome contains the complete genomes of 120 viruses and 10 bacteria
D. the first hereditary material was RNA ... mitochondria and chloroplasts have heredity based on RNA
A. mitochondria and chloroplasts originated as ingested prokaryotes ... mitochondria and chloroplasts have their own DNA
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Endotoxins are released in large amounts only when cells lyse
Indicate whether the statement is true or false.
Describe the symbiotic relationship between zooxanthellae and their hosts. How do both benefit from the relationship?
What will be an ideal response?
The Pr ? Pfr conversion cycle is known to control various growth functions in plants. Which of the following functions does the cycle NOT control?
A. inhibit shoot elongation B. promote seed germination C. decrease water transport D. affect accumulation of chlorophyll in plant tissue E. promote flowering
Answer the following questions with reference to the bones listed below. Answers may be used more than once or not at all.
A. This bone transfers force from the arms to the axial skeleton. B. This bone is not part of the appendicular skeleton. C. A cartilage disk separates units of this bone. D. This bone connects to the femur. E. This is a toe bone. F.