WHY SANSKRIT IS USELESS (STAND UP COMEDY) :Kenny on BIOLOGY,10TH STANDARD CBSE! So recently a lot of debate has been happening over Sanskrit, Well I never found use for Sanskrit when I was in school. Check out a snippet from my one hour stand up special about Sanskrit,... By: Kenneth Sebastian … Continue reading →

Marine Life Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. Given that in biology many phyla, families and genera have some species that live... By: Mohammed Saheed … Continue reading →

Biology Biomolecules Plants part 5 (Carbohydrates classification) CBSE class 11 XI Biology Biomolecules Plants part 5 (Carbohydrates classification, Monosaccharides, Dehydration synthesis, Hydrolysis) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

Biology Biomolecules Plants part 3 (Metabolites, Macro Micro molecules) CBSE class 11 XI Biology Biomolecules Plants part 3 (Metabolites, Macro Micro molecules) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

AP Biology Recruitment Video This is a video for prospective students for my AP BIology class. Background music is "On Top of the World" by Imagine Dragons. By: jchvatal1 … Continue reading →

Cell Biology by the Numbers, 2014 class, Lecture 4 (17/12/2014) Lecture 4: Energies and Forces * What is the characteristic power consumption of a human? * How much land is needed to supply the food that will give us the needed power? * How much power ... By: Cell Biology By The Numbers … Continue reading →

Biology Biomolecules Plants part 10 (Protein Introduction) CBSE class 11 XI Biology Biomolecules Plants part 10 (Protein Introduction) CBSE class 11 XI. By: ExamFearVideos … Continue reading →

Water Biology This video lecture provides an overview of water biology topics. By: ailuropoda8 … Continue reading →

The relationship between biology and sexual orientation is a subject of research. A simple and singular determinant for sexual orientation has not been conclusively demonstrated; various studies point to different, even conflicting positions, but scientists hypothesize that a combination of genetic, hormonal and social factors determine sexual orientation.[1][2] Biological theories for explaining the causes of sexual orientation are more popular,[1] and biological factors may involve a complex interplay of genetic factors and the early uterine environment.[3] These factors, which may be related to the development of a heterosexual, homosexual, bisexual or asexual orientation, include genes, prenatal hormones, and brain structure. A number of twin studies have attempted to compare the relative importance of genetics and environment in the determination of sexual orientation. In a 1991 study, Bailey and Pillard found that 52% of monozygotic (MZ) brothers and 22% of the dizygotic (DZ) twins were concordant for homosexuality.[4] 'MZ' indicates identical twins with the same sets of genes and 'DZ' indicates fraternal twins where genes are mixed to an extent similar to that of non-twin siblings. In 2000 Bailey, Dunne and Martin studied a larger sample of 4,901 Australian twins but reported less than half the level of concordance.[5] They found … Continue reading →

Causal Agent: The two species of bed bugs (Insecta: Hemiptera: Cimicidae) usually implicated in human infestations are Cimex lectularius and C. hemipterus. Although rare, humans may become incidental hosts of Cimex species of bats and birds. Adults and all nymphal stages of Cimex spp. need to take blood meals from warm-blooded hosts, which are typically humans for C. lectularius and C. hemipterus, although other mammals and birds can be utilized in the absence of a human host. Female bed bugs lay about five eggs daily throughout their adult lives in a sheltered location (mattress seams, crevices in box springs, spaces under baseboards, etc). Eggs hatch in about 4-12 days into first instar nymphs which must take a blood meal before molting to the next stage. The bugs will undergo five nymphal stages ( , , , , ), each one requiring a blood meal before molting to the next stage, with the fifth stage molting into an adult . Nymphs, although lacking wing buds, resemble smaller versions of the adults. Nymphs and adults take about 5-10 minutes to obtain a full blood meal. The adults may take several blood meals over several weeks, assuming a warm-blooded host is available. Mating … Continue reading →