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Concept explainers
To review:
The results of the HIV (human immunodeficiency virus) experiment and compare them with the Ebola virus (EBOV) experiment.
Introduction:
Ebola virus can lead to severe and fatal hemorrhagic fever in the human beings. The disease caused is known as Ebola virus disease. HIV is the subgroup of retrovirus (lentivirus) that leads to AIDS (acquired immunodeficiency syndrome). HIV utilizes CD4 (cluster of differentiation 4) receptor in order to enter the T helper cells. The cells that have free and unbound CD4 on their surface will be infected by the HIV. CD4 is a membrane protein that HIV utilizes to enter the cells. Similarly, researchers have identified many surface proteins that may work as a virus receptor for the EBOV. The figure below shows the experiment that was performed using HIV virus.
Experiment: One hundred sixty identical samples of T helper cells were grown in the culture. Different antibodies were then added into each sample of the cells. The antibody inhibits the specific membrane protein. A constant number of virions were then added to the samples followed by the incubation process under the conditions that are optimal for the viruses to enter.
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Chapter 33 Solutions
Biological Science (6th Edition)
- What is the opening indicated by the pointer? (leaf x.s.) stomate guard cell lenticel intercellular space none of thesearrow_forwardIdentify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forward
- Identify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forwardIdentify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forward
- What type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forwardWhat specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forward
- Identify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forwardPlease answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forward
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