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

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

Inheritance & Variation of Traits, Inheritance 3: Mutations (HS), Inheritance 3: Mutations (MS), Life Science, M&E 2: Anabolism/Catabolism (HS), M&E 2: Metabolism (MS), Matter & Energy in Organisms/Ecosystems, Natural Selection & Evolution, NSE 1: Evolution Evidence (HS), NSE 2: Evolution Factors (HS), NSE 4: Adaption (HS), S&F 2: Cell Function (MS), S&F 4: Stimuli Response (MS), Structure and Function

All About Efflux Pumps

Bacterial Multidrug Efflux Pumps: Much More Than Antibiotic Resistance Determinants SUMMARY: Efflux pumps are found in all organisms; they play an important role in helping the cells pump out toxins, heavy metals, and in the case of antibiotic resistant bacteria, antibiotics! This article talks about how efflux pumps work, other ways that they are used… Continue reading All About Efflux Pumps

Earth Science, Earth's System, ES 5: Life on Earth (HS), HSus 3: Human/Ecosystem Interactions (HS), Natural Selection & Evolution, NSE 4: Adaption (HS), NSE 5: Natural Selection (MS), NSE 5: Population Flux (HS)

Modeling Ecosystem Invasions with Bacteria

Invasion triple trouble: Environmental fluctuations, fluctuation-adapted invaders and fluctuation-mal-adapted communities all govern invasion success SUMMARY: To model how ecosystems react to invaders and temperature changes (due to global warming), researchers used different bacteria clones to simulate invasions. Results showed that communities in fluctuating temperatures were more susceptible to invasion compared to communities with constant temperatures.… Continue reading Modeling Ecosystem Invasions with Bacteria

Inheritance & Variation of Traits, Inheritance 2: Genes and Growth (MS), Inheritance 2: Role of DNA (HS), Inheritance 3: Mutations (HS), Inheritance 3: Mutations (MS), Inheritance 4: Population Genetics (HS), Life Science, Natural Selection & Evolution, 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), S&F 1: Cells (MS), S&F 1: DNA to Proteins (HS), S&F 2: Cell Function (MS), Structure and Function

How Bacteria Genes Change with Dryness

Environmental filtering of bacterial functional diversity along an aridity gradient SUMMARY: Genes of soil bacteria sampled in the Tibetan Plateau showed that as the environment got drier, the less diverse the genes were. Researchers wanted to compare bacterial gene diversity with the already-known diversity of genes in large animals in various environments. There were less… Continue reading How Bacteria Genes Change with Dryness

Life Science, Natural Selection & Evolution, NSE 1: Fossil Records (MS), NSE 4: Adaption (HS), NSE 5: Population Flux (HS)

What Diatoms Can Tell Us

Diatom ecological response to deposition of the 833-850 CE White River Ash (east lobe) ashfall in a small subarctic Canadian lake SUMMARY: This article looks at diatom population differences affected by volcanic rock deposits into a lake before, during, and after an eruption event. Results showed that diatom population patterns were able to quickly return… Continue reading What Diatoms Can Tell Us