Research Papers/Topics in Biology Education

Misconception About Photosynthesis And Respiration Held by Grade 11 And 12 Biology Learners in on a Thinge Circuit in Namibia.

Abstract The study sought to investigate the misconception about photosynthesis and respiration held by Grade 11 and 12 Biology learners in Onathinge circuit in Namibia. The research employed the descriptive survey design. Data was gathered through the uses of tests, observations and interviews. The population was made up of 4 secondary schools, 80 learners and 4 Biology teachers. The sample consists of 80 learners 20 from each school and 4 Biology teachers 1 per school. The researcher ...

Extent And Challenges Of Implementation Of Asei-Pdsi Approach In Teaching Of Science In Primary Schools In Emuhaya Sub-County, Vihiga County, Kenya

ABSTRACTActivity, Student, Experiment, Improvisation (ASEI) and Plan, Do, See, Improve (PDSI) is a pedagogical strategy advocated by Strengthening of Mathematics and Science Education (SMASE) program since 2010 to refocus the pedagogical practice of mathematics and science teachers and enhance learner achievement. During the life of SMASE, Sabatia, Vihiga, Kisumu West and Gem Sub-Counties neighboring Emuhaya consistently improved in science (ranging between 55-60%), unlike Emuhaya where perfo...

Studies On Microbial Spoilage

AbstractPour microorganisms were isolated from rotted onion bulbs, purple variety, purchased from markets in the Lagos State of Nigeria. Three of them were pathogenic they produced soft rot when wound-inoculated into healthy onion bulbs. The microorganisms were identified as Pseudomonas cepacia Buckholder, Candida utilis (Henneberg) Lodder and Kreger-Van Rig and Pseudomonas fluorescens Migula; the last being the most pathogenic of the three.A study of the effect of infection 10 of the nu...

Factors which influence performance of biology students in Gweru district secondary schools.

ABSTRACT The purpose of this study was to investigate the factors which influence performance of Biology students in Gweru District Secondary Schools. The study also aimed at finding out strategies which can be used to improve performance of students in Biology. Data was collected from three schools through questionnaires and interviews. A descriptive survey design was used during the study. This study comprised a sample of 15 participants and a total of 3 secondary schools in Gweru Urb...

Microbiological Studies Of Shrimp Spoilage

ABSTRACTBacterial counts of samples of freshly caught shrimp3, Penaeus duorarum and of see water from Nigeria, were carried out for a period of ton months, from April 1975 to January 1976. A monthly variation in the size of the bacterial populations of shrimps and son water was observed. Gram-positive bacteria were generally more abundantly isolated than Gram-negative bacteria from shrimps and 998 water. Coryneforns predominated the isolates. Next in abundance were micrococci, followed b...

Heavy Metal Contamination Of Ologe Lagoon, Nigeria And Biomarkers Of Oxidative Stress In Pachymelania Aurita

ABSTRACT The physico-chemical characterization, macrobenthic invertebrates and biomarkers of oxidative stress as indicators of heavy metal (Cu, Fe, Pb, Mn and Zn) contamination in Ologe Lagoon, Nigeria were investigated from January, 2007 - December, 2008. Biomarkers of oxidative stress [Catalase (CAT), Glutathione S- transferase (GST), Superoxide Dismutase (SOD), Reduced Glutathione (GSH) and Malondialdehyde (MDA)] activities were evaluated in Pachymelania aurita exposed to sublethal ...

Identification Of Large Variation In Pfcrt, Pfmdr-1 And Pfubp-1 Markers In Plasmodium Falciparum Isolates From Ethiopia And Tanzania

Abstract Background: Plasmodium falciparum resistance to anti-malarials is a major drawback in effective malaria control and elimination globally. Artemisinin-combination therapy (ACT) is currently the key first-line treatment for uncomplicated falciparum malaria. Plasmodium falciparum genetic signatures at pfmdr-1, pfcrt, and pfubp-1 loci are known to modulate in vivo and in vitro parasite response to ACT. The objective of this study was to assess the distribution of these resistance gen...

Changes In The Seasonal Activity Of Bats Occuring In The Kunene Region, Namibia: Influence Of Environmental Factors

ABSTRACTThe Kunene region is an arid region with extreme environmental conditions. Understanding how environmental conditions affect bat activity, number and distribution is important for assessing activity and abundance. Monthly bat activity and the effect of environmental factors (temperatures, moon phase) on bat activity were recorded to elucidate factors influencing the distribution of bats. Wildlife Acoustic SM2 detectors were used to detect the bat activity from three sites, altitudinal...

Molecular Screening Of Potential Bat-Borne Hantaviruses And Determination Of Species Richness And Composition Of Bats In Selected Habitats Within The Woodland And Savanna Biomes In Namibia

ABSTRACTBats are present and they play unique ecological roles in various habitats in Namibia. Yet the patterns of species richness and composition of bats associated with these habitats within different biomes in Namibia still remain unknown. Bats are also important carrier hosts and transmitters of zoonotic viruses of public health significance including old and emerging hantaviruses. The burden of hantavirus disease is globally well-documented but this remains unknown and unrecognised in m...

Quantitative and qualitative assessment on the suitability of seed oil from water plant (Trichilia emetica) for soap making

A b s t r a c tDespite widespread and its local available as a naturalized hedge and shade plant, the potential ofTrichilia emetica was not utilized in soap making by the majority of local community in various partsof Dodoma, Tanzania. This study aimed to assess the quantity (yields) and quality (Acid Values (AVs),%Free Fatty Acids (%FFAs) and Saponification Values (SVs) of seed oil from water plant (T. emetica), suitablefor soap making application. Solvent extraction method was used during o...

Influence Of Land Cover And Host Species On Trypanosome Infection In Cattle And Its Socio-Economic Impacts To Pastoralists Of The Maasai Steppe, Tanzania

Abstract Introduction: Trypanosome infections result into trypanosomosis in cattle and this is an infection detrimental to pastoralist income. The patterns of transmission are thought to be influenced by ecological factors including wildlife and land cover. We assessed the influence of the relative abundance of wildlife and land cover (cultivation and habitat type) on the presence of trypanosome infections in replicated cattle herds of the Maasai Steppe.

Dust Bathing Behaviours Of Elephants, Zebras And Wildebeest And The Potential Risk Of Inhalational Anthrax In Etosha National Park

ABSTRACT Bacillus anthracis is a soil-borne bacterium and the causative agent of the disease anthrax which commonly infects herbivorous animals. The disease is transmitted via three routes of infection: ingestion, cutaneous or inhalation of spores. This study investigated the seasonality of dust bathing as a possible contributor to inhalational anthrax in zebra, blue wildebeest and African elephants, in relation to the seasonality of anthrax mortalities in Etosha National Park. Most ant...

Schistosome Specific Antibodies in Individuals Co-Infected with Malaria in Southwest Nigeria

.Abstract. A cross-sectional study design in two primary schools in Ibadan and Akure was used to determine the prevalence orurinary schistosomiasis, and the human humeral immune response to schistose antigens in individuals withmalaria co-infection. Urine samples were collected from 163 children, while 112 gave blood samples. Malariaparasitaemia was determined by microscopy after Giernsa staining and schistdsomiasis by centrifugation technique.Serum samples were analyzed for antibodies t...

Developmental Regulation of Genes Encoding Universal Stress Proteins in Schistosoma mansoni

Abstract: The draft nuclear genome sequence of the snail-transmitted, dimorphic, parasitic, platyhelminth Schistosoma mansoni revealedeight genes encoding proteins that contain the Universal Stress Protein (USP) domain. Schistosoma mansoni is a causative agent of humanschistosomiasis, a severe and debilitating Neglected Tropical Disease (NTD) of poverty, which is endemic in at least 76 countries. Theavailability of the genome sequences of Schistosoma species presents opportunities for bioinfo...

THE ROLE OF CIRCULATING ENDOTHELIAL PROGENITOR CELLS (CEPCs) AND OTHER BIOMARKERS IN THE PATHOGENESIS OF CEREBRAL MALARIA

ABSTRACT Cerebral malaria (CM) is known to be the most severe complication of Plasmodium falciparum infection. Despite effective anti-parasitic treatment, it remains a major cause of morbidity and mortality in infected children. Sequestration of infected red blood cells in the brain microvasculature, occlusion of blood flow, activation and subsequent damage of the endothelium are hallmarks of the pathogenesis of CM. This study sought to quantify and compare time course levels of cEPC an...


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