We hypothesized that the amount of UV radiation exposed has a negative correlation with yeast genetic stability‚ which ultimately determines the number of yeast colonies. In this experiment‚ yeast cells were treated with UV radiation‚ protected by photoprotective agents with different strength (in ascending order: Sunscreen #2‚ #1‚ aluminium foil). After letting it grow for seven days at 37 degrees‚ some grown colonies were counted to determine the effectiveness of photoprotective agents. After comparing
Premium Ultraviolet Sunscreen Mutation
Preparation Outline Public Speaking March 8‚ 2013 Specific Purpose: To inform my audience about radiation therapy. Central Idea: To clearly understand radiation therapy‚ you must know about the different types and side effects. Introduction During my life‚ I have seen how harsh cancer can be. It has took a toll of many people’s lives and changed families all over. I have witnessed it first hand as it has affected my family and has taken people from me who were very important. Experiencing
Premium Chemotherapy Radiation therapy Cancer
ABSTRACT Mutation was induced via a physical agent‚ radiation. 4 levels of radiation—0 kr (control)‚ 10 kr‚ 30 kr‚ and 50 kr—were used in seeds to determine the radiation effects on the growth of Zea mays. Using two duplicate set-ups‚ each‚ planted with 18 seeds per radiation‚ the differences in height were observed from January 29 to March 17 in a 1 to 2-day interval (Mondays-Wednesdays-Fridays). Results show that as radiation increases‚ the potential of plants to grow decreases—0 kr seeds reached
Premium Ionizing radiation Maize Chromosome
Effect of Ionizing Radiation on the Germination‚ Growth and Development of Corn (Zea mays L.) Alexis A. Parco BIO30 Group 1 Sec. A-6L September 27‚ 2012 ABSTRACT Corn seeds pre-exposed to 10‚ 30‚ and 50 kiloRads (kR) of radiation were grown in plots for almost 7 weeks. Four different setups – 10kR‚ 30kR‚ 50kR and the control‚ each with 10 corn seeds initially planted – were observed three times a week (during Mondays‚ Wednesdays and Fridays)‚ and the height of each growing corn was
Premium Mutation DNA Ionizing radiation
Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
Premium Ionizing radiation Radioactive decay
The effect of mobile phone radiation on human health is the subject of recent interest and study‚ as a result of the enormous increase in mobile phone usage throughout the world. As of November 2011‚ there were more than 6 billion subscriptions worldwide.[1] Mobile phones use electromagnetic radiation in the microwave range. Other digital wireless systems‚ such as data communication networks‚ produce similar radiation. In 2011‚ International Agency for Research on Cancer (IARC) classified mobile
Free Mobile phone Internet Childhood
What You Need to Know About Radiation Therapy‚ Teen WHAT IS RADIATION THERAPY? Radiation therapy is a type of cancer treatment that uses high-energy waves of radiation to kill cancer cells or shrink tumors. These waves are like fast-moving X-rays. The rays are strong enough to destroy unhealthy cells. In radiation therapy‚ the radiation may be delivered from outside your body or from a source of radiation that is put inside your body. External radiation is usually used‚ though you may have both
Premium Radiation therapy Medicine Chemotherapy
ABSTRACT The effect of different levels of radiation was determined using four set-ups-10kR‚ 30kR‚ 50 kR‚ and the control (no radiation). The four set-ups were observed for nine weeks and growth (in cm)‚ germination‚ and survival rate was measured. Results showed that at the right level of radiation level (10 kR)‚ radiation have a positive effect on the plant growth and has the same germination and survival rate from the control set up. The 30 kR set up and 50 kR set up are relatively smaller
Premium Ionizing radiation 2007 1982
Radiation Exposure Do you know much radiation you are exposed to everyday? Many people are not aware of the radiation levels around them on a daily basis. I believe that exposure to radiation should be minimal. I think protection and prevention is vital. Being aware of the health risks and what can be done to protect yourself should be a well known piece of knowledge. If followed‚ this knowledge can help reduce radiation exposure levels. Exposure to radiation is higher today than it has ever
Premium Ionizing radiation Radiation poisoning Radioactive decay
Adaptive Radiation An example of adaptive radiation occurring after a mass extinction is the extinction that killed off the dinosaurs. What caused this mass extinction was when a massive comet hit earth‚ off the Yucatan Peninsula. However‚ the mammals that survived this catastrophic event for the most part‚ survived because they could burrow in holes for shelter. Regardless‚ about 90% of all life on earth was destroyed. This led to an opportunity for the surviving plants and animals to disperse
Free Evolution Charles Darwin Species