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Green Algae

Green Algae

Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...

Monohybrid Crosses

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What is Natural Selection?

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Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.

Light as Energy

Light as Energy

The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...

Colors and Magnetism

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Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...

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Related Experiment Video

Updated: Feb 5, 2026

Extraction and Analysis of Taiwanese Green Propolis

Extraction and Analysis of Taiwanese Green Propolis

Published on: January 7, 2019

Reply to D.M. Green

David B Dix¹, Nita L Seibel¹, Yueh-Yun Chi¹

¹David B. Dix, British Columbia Children's Hospital, Vancouver, BC, Canada; Nita L. Seibel, National Cancer Institute, Bethesda, MD; Yueh-Yun Chi, University of Florida, Gainesville, FL; Geetika Khanna, Washington University School of Medicine, St Louis, MO; Elizabeth A. Mullen, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, MA; James I. Geller, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; John A. Kalapurakal, Lurie Comprehensive Cancer Centre of Northwestern University, Chicago, IL; Peter F. Ehrlich, University of Michigan, Ann Arbor, MI; Marcio H. Malogolowkin, University of California at Davis Comprehensive Cancer Center, Sacramento, CA; Conrad V. Fernandez, IWK Health Center, Dalhousie University, Halifax, NS, Canada; and Jeffrey S. Dome, Children's National Health System, George Washington University School of Medicine and Health Sciences, Washington, DC.

Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology

|September 14, 2018

Summary

No abstract available in PubMed .

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