If a newly emerging virus shows increased infectivity for a human cell line, which consequence most likely follows, assuming receptor binding mediates attachment?

💡 Explanation

Increased infectivity often stems from optimized initial binding. A stronger affinity for cell receptors promotes more efficient attachment, because this is the initial step for viral entry; therefore, enhanced binding affinity leads to greater infection efficiency, rather than reduced mutation rates or other irrelevant processes.

• A photosynthetic algal cell is treated with a drug inhibiting prokaryotic ribosomes. Which consequence follows for the cell's chloroplast?
• What happens to the metabolic rate of brown adipose tissue when norepinephrine binds to its receptors?
• A developing embryo experiences localized exposure to a teratogen. Which outcome occurs when normal cellular differentiation is disrupted during gastrulation?
• Which mechanism explains how bacterial populations coordinate gene expression in response to increasing cell density?
• Which outcome occurs when adaptive radiation takes place within a newly formed volcanic island ecosystem?
• A botanist observes that a plant's stem is elongating more rapidly than expected in low-light conditions. Which mechanism explains why this occurs?