Life Science, M&E 2: Anabolism/Catabolism (HS), Matter & Energy in Organisms/Ecosystems, NSE 2: Taxonomy (MS), NSE 3: Embryology (MS), S&F 1: DNA to Proteins (HS), S&F 2: Body Systems (HS), S&F 3: Homeostasis (HS), S&F 4: Stimuli Response (MS), Structure and Function

The Endocannabinoid System of Animals

The Endocannabinoid System of Animals SUMMARY: This article talks about the endocannabinoid system (ECS) in animals. The first and second section talks about the three parts of the ECS: receptors (CBR1 and CBR2), ligands (endocannabinoids), and the ligand degrading enzymes. The receptors are G-protein coupled receptors, the ligands bind directly to these receptors, and the… Continue reading The Endocannabinoid System of Animals

Inheritance & Variation of Traits, Inheritance 2: Role of DNA (HS), Inheritance 4: Asexual/Sexual (MS), Inheritance 5: DNA Technology (MS), Life Science, Natural Selection & Evolution, Non-NGSS Articles, NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

Anhydrobiosis without trehalose in bdelloid rotifers

Anhydrobiosis without trehalose in bdelloid rotifers SUMMARY: There are many types of organisms that can dry out, rehydrate, and then go about their lives with no problems. Many of the larger ones use trehalose or sucrose as an antifreeze. Bdelloid rotifers (tiny microscopic animals) do not. This study looked at the carbohydrate content in desiccated… Continue reading Anhydrobiosis without trehalose in bdelloid rotifers

Life Science, Natural Selection & Evolution, Non-NGSS Articles, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 5: Population Flux (HS)

Genetic Diversity in Laboratory Rodent Colonies

Inbred or Outbred? Genetic Diversity in Laboratory Rodent Colonies SUMMARY: This study looked at genetic diversity in gerbils used in labs. Due to the fact that labs are small, groups tend to become less diverse overtime; however, the overall diversity of the gerbils can be found if you outbreed them. The significance of inbred or… Continue reading Genetic Diversity in Laboratory Rodent Colonies

Inheritance & Variation of Traits, Inheritance 5: DNA Technology (MS), Life Science, Natural Selection & Evolution, NSE 2: Taxonomy (MS)

Genetic diversity of Entamoeba in cockroaches

Genetic diversity of Entamoeba: Novel ribosomal lineages from cockroaches SUMMARY: Researchers in this study looked at the diversity of Entamoeba in 3 different species of cockroaches (the American roach, the Dubia roach, and the Madagascar hissing roach) by looking at SSU rDNA in the ground up intestines of the cockroaches. They found that the Entamoebas… Continue reading Genetic diversity of Entamoeba in cockroaches

Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Life Science, Natural Selection & Evolution, NSE 3: Trait Selection (HS)

Insights into transgenerational epigenetics from studies of ciliates

Insights into transgenerational epigenetics from studies of ciliates SUMMARY: This article summarizes the examples of ciliate epigenetics. The first section is an introduction to their curious nucleus: they have two, and macronucleus and a micronucleus. Several examples of ciliate epigenetics are given in sections 2 and 3. Some morphological changes that can occur include surface… Continue reading Insights into transgenerational epigenetics from studies of ciliates

Inheritance & Variation of Traits, Inheritance 1: Behavior and Reproduction (MS), Inheritance 1: Mitosis (HS), Inheritance 4: Population Genetics (HS), Interdependent Relationships in Ecosystems, IR 1: Ecosystem Interactions (MS), IR 2: Affecting Biodiversity (HS), Life Science, M&E 3: Food Webs (MS), M&E 5: Changing Ecosystems (MS), Matter & Energy in Organisms/Ecosystems, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 3: Trait Selection (HS), NSE 4: Adaption (HS), NSE 4: Fitness (MS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS)

De novo origins of multicellularity in response to predation

De novo origins of multicellularity in response to predation SUMMARY: Chlamydomonas are common, single-celled green algae that have flagella and can move around. They’re a strange cross between plants and protists. In this study, scientists subjected chlamydomonas to predation by paramecia (common freshwater ciliates) and observed that after about 750 generations, the chlamydomonas took on… Continue reading De novo origins of multicellularity in response to predation