Concept explainers
To review:
The subcellular structures present in certain cells having various functions like magnetotaxis or photosynthesis.
Introduction:
The subcellular structures are the simple structures that are present inside the cell. These structures can be easily visualized by transmission electron microscope or scanning electron microscope. A few examples of subcellular structures are mitochondria, endoplasmic reticulum, Golgi apparatus, and nucleus.
In cells, there are several major structures that are involved in content organization, DNA (deoxyribonucleic acid) maintenance, and in the synthesis of new parts. In order to adapt to the diverse environment and
Thylakoids are membrane-bound sections that lie in cyanobacteria and chloroplasts. Photosynthetic bacteria evolve this subcellular structure to increase the collecting surface of membranes involved in photosynthesis. These structures carry out light reactions for energy storage and absorption of photons. This energy is used for carbon dioxide fixation that takes place inside the covered polyhedral bodies which are carboxysomes along with the Rubisco enzyme for fixation. Phycobilisomes are also found in association with the thylakoid membrane in order to harvest sunlight.
Storage granules are generated by nonphototrophic bacteria of soil. These granules store essential metabolites and reserved energy. Magnetotaxis is a form of
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Chapter 3 Solutions
MICROBIOLOGY: EVOLV.SCI.-W/ACCESS>CI<
- 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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