There are more than 7,000 harmful chemicals in tobacco smoke, at least 250 are known to be harmful. Some of these chemicals are:
Nicotine
Formaldehyde
Lead
Arsenic
Ammonia
Radioactive elements such as Polonium-210
Benzene
How some of those chemicals affect the body:
Nicotine is highly addictive and can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries (vessels that carry blood).
Symptoms for formaldehyde are watery eyes; burning sensations in the eyes, nose, and throat; coughing; wheezing; nausea; and skin irritation
High levels of lead may cause anemia, weakness, and kidney and brain damage. Very high lead exposure can cause death.
Arsenic poisoning occurs over a brief period of time, symptoms may include vomiting, abdominal pain, encephalopathy, and watery diarrhea that contains blood. Long-term exposure can result in thickening of the skin, darker skin, abdominal pain, diarrhea, heart disease, numbness, and cancer.
High concentrations of ammonia in air causes immediate burning of the eyes, nose, throat and respiratory tract and can result in blindness, lung damage or death.
In photosynthesis, the light-dependent reaction takes place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
The "light-independent" or dark reactions happen in the stroma of the chloroplasts. This is also known as the Calvin Cycle.
Auxin, which is produced by the apical bud, encourages the growth of apical buds while inhibiting the growth of lateral buds that are located lower on the stem, toward the axillary bud.
<h3>
What does a shoot's apical bud produce?</h3>
Auxin, a hormone produced by the apical bud, travels via the plant's circulatory system (phloem) down the stem and prevents axillary buds from expanding, which would otherwise result in the production of additional side shoots from the plant cells.
<h3>What function does auxin serve?</h3>
Auxin plays a crucial role in controlling plant growth and development by regulating embryonic development, root and stem tropisms, apical dominance,and the transition to blooming..
<h3>What are the four roles that auxins play?</h3>
- Its primary uses are to stimulate shoot growth in culture and to enhance lateral and accidental shoot growth.
- aids in overcoming auxin-induced apical dominance.
- encourage the development of leaves' chloroplasts.
- encourages the mobilization of nutrients and delays leaf senescence.
learn more about Auxin here
<u>brainly.com/question/23092295</u>
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Explanation:
The role of active cytotoxic T cells is to attack <u> </u><u>body cells that have been infected</u>
