How does smoking put people at greater risks of colds and infections?
What will be an ideal response?
Tobacco smoke quickly immobilizes cilia that line the upper respiratory tract. These cilia help keep pathogens and pollutants from reaching the lungs. Smoke from a single cigarette can paralyze these cilia for hours, which exposes the lung to pathogens. Smoke also kills white blood cells that patrol and defend respiratory tissues, allowing pathogens to multiply in the undefended airways.
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Late mRNA products in T4 phage include
A. phage structural proteins. B. proteins involved in cell lysis and phage release. C. proteins that help with phage assembly without becoming part of the virion. D. All of the above are correct.
Identify the parts of a typical fungal body plan and briefly explain the function of each of the
structures you identified.
What is the main factor that will determine whether or not water can enter the root cells?
A. A lower osmotic pressure in the root tissues than the soil solution B. Type of plant cells that are exposed to the water C. A higher osmotic pressure in the root tissues than the soil solution D. Volume of water available
The firefly (Photinus†granulatus) and the zebra mussel (Dreissena†polymorpha) are both members of the kingdom Animalia. This indicates that they must also both be members of the same
A. phylum B. genus C. species D. order E. domain