During endocytosis, if a bacterial cell is not degraded and bacterial DNA is taken up by the eukaryotic cell, what may have occurred?
A. vertical evolution.
B. horizontal gene transfer.
C. vertical exon shuffling.
D. chromosomal duplication and genomic exchange.
E. both chromosomal duplication and vertical evolution.
B. horizontal gene transfer.
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Multiple protein complexes associated with the cellular respiration are known as
A) Q cycles. B) chemiosmotic coupling complexes. C) Fe-S centers. D) respirasomes. E) synthesomes.
Invisible living creatures were thought to exist and cause disease long before they were ever observed.
Answer the following statement true (T) or false (F)
As you climb the mountain, why are the biomes changing?
A. The air is thinner. B. The latitude is changing. C. More rain falls in a rain shadow. D. Some animals live better at higher elevations. E. It is colder.
Which one of the following is not an adaptation shown by modern birds?
A. A respiratory system that allows all of the air to pass through the lungs in one direction B. Wings and a long feathered tail C. Modified beaks and feet to support feeding behavior D. Complete division of the heart into right and left halves E. Endothermy