How similar are homologous chromosomes to each other?
What will be an ideal response?
They are nearly identical in size and contain a very similar composition of genetic material.
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An appendage that is an extension of the bacterial cell wall and plasma membrane is a(n) ________.
A. pilus B. prostheca C. mycelium D. flagellum
The dried residues of fine droplets from mucus or saliva that harbor and transmit pathogen are ________.
A. droplet nuclei B. mechanical vectors C. biological vectors D. aerosols E. fomites
Which of the following correctly describes papilloma virus (HPV) effects on cell growth?
A. Viral E7 degrades cellular p53 B. Causes insertional inactivation of critical genes C. Viral E6 perturbs the normal function of cellular Rb D. Viral E6 stimulates degradation of cellular p53
A child is born with a hole in his heart between the left and right ventricles. This condition must be immediately corrected with surgery because the hole ________
A) will allow blood to leak out of the heart and the child could bleed to death B) will cause blood to flow in the reverse direction back into veins instead of the arteries C) allows mixing of both oxygenated and deoxygenated blood, which reduces oxygen delivery to tissues D) will cause the flow of blood to reverse in the heart