Answer:
"The function of DNA is tied to its structure. ... The bonds between nitrogenous bases are essential to DNA's double helix structure, which resembles a twisted ladder. The base pairs form the rungs of the twisted ladder, and the sugar-phosphate strands form the sides."
Explanation:
- https://www.ancestry.com
Answer:
8. D
9. D
10. C
I'm not sure about number 8
This drug inhibits the growth of bacterial cells but not human cells. This is an example of the selective toxicity of antibiotics.
Folic acid is an essential component for all cells to synthesize nucleic acids (DNA and RNA). Human cells do not synthesize folic acid and they take it through food. Bacterial cells are impermeable to folic acid and hence they need to synthesize their own folic acid.
Antibiotics target the metabolic pathway of folic acid synthesis in bacteria by inhibiting one of the enzymes in this pathway. These drugs are only toxic to bacteria but not to humans because humans do not have the folic acid synthesis pathway and hence they do not get affected by the action of the antibiotic. This is known as the selective toxicity of antibiotics.
These antibiotics are designed in a way to target the infecting agent (bacteria) while rendering minimal or no toxicity to the host (humans).
Know more about selective toxicity here :
brainly.com/question/13142849
#SPJ4
<span>Atherosclerotic
peripheral vascular disease is symptomatic with at least 50% occlusion. The primary peripheral symptom, due to ischemia, is calf pain.
</span>This disease is a form of arterial insufficiency, which means that blood circulation through the arteries is decreased.<span>Other symptoms include painful cramping in the hip, thigh or calf muscles after certain activities, such as walking or climbing stairs (claudication)<span> and leg numbness or weakness.</span></span>
