Ascientist thinks he has discovered a drug that interferes with the functioning of a virus in the human body. to effectively block infection the drug can? a- weaken viral respiration. b- destroy viral mitochondria. c- reduce the ability of the virus to absorb cells. d- prevent the virus from entering cells.

The control of virus infection is complicated compared to bacteria since the virus   either enters into the host cells or used the host cell components to create new cells that is released to affect new cells. Hence it has been a challenge to isolate the virus particle and affect them with chemical components without causing damages to the host cells.

Hence antivirals are drugs that are designed to inhibit their activity. They will block the activity of the virus from entering the cells and make them into host. Hence D is the right option

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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