Category Archives: Biology

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 →

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 →

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

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 →

Degree Information Ph.D., California Institute of Technology (1991) B.S., Texas A & M University, College Station (1980) B.S., Texas A & M University, College Station (1979) Peptide Therapeutics - creating peptide drugs by the improvement of naturally occurring peptides and the discovery of new peptides via combinatorial libraries Biography Publications Zhu, Y., Eiteman, M. A., Lee, S. A., and Altman, E. 2010. Conversion of glycerol to pyruvate by Escherichia coli using an acetate- and glucose-limited fed-batch process. Journal of Industrial Microbiology and Biotechnology. 37:307-312. Lu, S., Eiteman, M. A., and Altman, E. 2010. Effect of flue gas components on succinate production and CO 2 fixation by metabolically engineered Escherichia coli. World Journal of Microbiology and Biotechnology. 26:429-435. Lu, S., Eiteman, M. A., and Altman, E. 2009. Effect of CO 2 on succinate production in dual-phase Escherichia coli fermentations. Journal of Biotechnology. 143:213-223. Lu, S., Eiteman, M. A., and Altman, E. 2009. pH and base counterion affect succinate production in dual-phase Escherichia coli fermentations. Journal of Industrial Microbiology and Biotechnology . 36:1101-1109. Eiteman, M. A., Lee, S. A., Altman, R., and Altman, E . 2009. A substrate-selective co-fermentation with Escherichia coli produces lactate by simultaneously consuming xylose and glucose. Biotechnology and … Continue reading →

Causal Agent: Pediculus humanus capitis, the head louse, is an insect of the order Psocodea and is an ectoparasite whose only host are humans. The louse feeds on blood several times daily and resides close to the scalp to maintain its body temperature. The life cycle of the head louse has three stages: egg, nymph, and adult. Eggs: Nits are head lice eggs. They are hard to see and are often confused for dandruff or hair spray droplets. Nits are laid by the adult female and are cemented at the base of the hair shaft nearest the scalp . They are 0.8 mm by 0.3 mm, oval and usually yellow to white. Nits take about 1 week to hatch (range 6 to 9 days). Viable eggs are usually located within 6 mm of the scalp. Nymphs: The egg hatches to release a nymph . The nit shell then becomes a more visible dull yellow and remains attached to the hair shaft. The nymph looks like an adult head louse, but is about the size of a pinhead. Nymphs mature after three molts (, ) and become adults about 7 days after hatching. Adults: The adult louse is about the size … Continue reading →

Ive spent the last couple of years arguing that the barriers between software and the physical world are falling. The barriers between software and the living world are next. At our Solid Conference last May, Carl Bass, Autodesks CEO, described the coming of generativedesign. Massive computing power, along with frictionless translation between digital and physical through devices like 3D scanners and CNC machines, will radically change the way we design the world around us. Instead of prototyping five versions of a chair through trial and error, you can use a computer to prototype and test a billion versions in a few hours, then fabricate it immediately. That scenario isnt far off, Bass suggested, and it arises from a fluid relationship between real and virtual. Biology is headed down the same path: with tools on both the input and output sides getting easier to use, materials getting easier to make, and plenty of computation in the middle, itll become the next way to translate between physical and digital. (Excitement has built to the degree that Solid co-chair Joi Ito suggested we change the name of our conference to Solid and Squishy.) I spoke with Andrew Hessel, a distinguished research scientistin Autodesks … Continue reading →

Reading a Galveston Daily News article on the College of the Mainland Biology Clubs nature conservation projects inspired the Kemah-Bay Area Garden Club to get involved. The club presented a $1,000 check to Sheena Abernathy, COM biology instructor and Biology Club advisor, for supplies to assist the club. The clubs conservation projects include growing native plants in the colleges greenhouse for Audubon Texas and the Nature Conservancy. With the second, big greenhouse up and functioning, were going to work more with Audubon Texas and the Nature Conservancy, said COM Biology Club advisor Sheena Abernathy. Recently students helped plant 15 to 20 cacti and 15 to 20 lantana for Audubon Texas at the Rookery Islands. For more information on the COM Biology Club, contact Abernathy at sabernathy@com.edu. College of the Mainland offers a variety of fully accredited associate degrees and certifications that prepare students for success in transferring to a university or entering the workforce, including programs in process technology, occupational safety and health care. An Achieving the Dream Leader College, COM has an excellent professor-to-student ratio that allows instructors to connect with each class. Were the launchpad for success stories throughout the Mainland. For more, visit http://www.com.edu. Follow this link: … Continue reading →