Make it yours.Save notes, decks & boards to your own library.

openstem

Explore

Spaces

My Library

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Biology Biology groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Biology

Cells, genetics, ecology and physiology on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.

Content Groups1

Loading…

loading…

About Privacy Terms of Service© openstem

We use privacy-friendly product analytics (no session recording, PII masked) to improve OpenStem. Load analytics? Privacy Policy

openstem

Explore

Groups Favorites

Collections Notes Flashcards Quizzes Sketches Flowcharts Plots Molecules

Make it yours.Save notes, decks & boards to your own library.

Get started Sign in

Explore Groups Favorites

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Biology Biology groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Biology

Cells, genetics, ecology and physiology on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.

Content Groups1

Loading…

Biology: explore STEM content (page 45 of 50) · openstem

Flashcards9 cards

What stimulates ADH (vasopressin) release, and where is it synthesized and released?1 / 9

ADH is synthesized in the hypothalamus and released from the posterior pituitary. Release is stimulated primarily by rising blood osmolality detected by hypothalamic osmoreceptors, and secondarily by large drops in blood volume or pressure detected by baroreceptors.

Biology

Biology · L4 · Hormonal Regulation Of Fluid Balance

@openstem

Biology · L4 · Hormonal Regulation Of Fluid Balance

Flowchart7 objects

Biology

Animals That Live in Groups · flowchart

@openstem

Animals That Live in Groups · flowchart

Note~452 words · 2 min

Asexual vs. Sexual Reproduction Across the Tree of Life Across the tree of life, organisms reproduce in two broad ways: asexually, using genetic material from a single parent, or sexually, by combining genetic material from two parents. Nei

Biology

Biology · L3 · Asexual vs. Sexual Reproduction Across the Tree of Life

@openstem

Biology · L3 · Asexual vs. Sexual Reproduction Across the Tree of Life

Quiz5 questions

What chemical feature allows RIG-I to distinguish many viral RNA replication intermediates from host cytoplasmic mRNA?

AThe presence of an uncapped 5' triphosphate or diphosphate group, absent from 5'-capped host mRNA.BThe presence of a poly-A tail, which only viral RNA has.CRIG-I cannot distinguish viral RNA from host RNA under any circumstances.DThe presence of thymine bases instead of uracil.

Biology

Biology · L5 · Advanced Virus-Host Interactions

@openstem

Biology · L5 · Advanced Virus-Host Interactions

Flowchart9 objects

Biology

Biology · L5 · Biophysics and Single-Molecule Methods · flowchart

@openstem

Biology · L5 · Biophysics and Single-Molecule Methods · flowchart

Note~426 words · 2 min

Bioinformatic Sequence Analysis Comparative sequence analysis — aligning, scoring, and modeling relationships among DNA, RNA, and protein sequences — underlies nearly every downstream biological inference in genomics, from identifying a gen

Biology

Biology · L5 · Bioinformatic Sequence Analysis

@openstem

Biology · L5 · Bioinformatic Sequence Analysis

Quiz5 questions

Why must GnRH be released in a pulsatile pattern to sustain normal FSH/LH secretion?

AContinuous GnRH exposure causes receptor downregulation and desensitization, paradoxically suppressing gonadotropin releaseBContinuous GnRH exposure always increases FSH/LH release furtherCPulsatile release has no functional significanceDGnRH cannot cross into the bloodstream unless released in pulses

Biology

Biology · L4 · Reproductive Physiology Quiz

@openstem

Biology · L4 · Reproductive Physiology Quiz

Plot1 plot · 3 params

Biology

Biology · L3 · Logistic Population Growth

@openstem

Biology · L3 · Logistic Population Growth

Quiz5 questions

A sigmoidal (rather than hyperbolic) velocity-vs-substrate curve is characteristic of an enzyme that shows:

AA single active site with no communication between subunitsBPositive cooperativity among multiple subunits, where binding at one site increases affinity at the othersCPure competitive inhibition onlyDNo regulation of any kind

Biology

Biology · L4 · Enzyme Regulation and Allostery Quiz

@openstem

Biology · L4 · Enzyme Regulation and Allostery Quiz

Flashcards10 cards

What is a genome-wide association study (GWAS), and what statistical model is typically fit at each variant to test for association with a binary disease phenotype?1 / 10

A GWAS tests hundreds of thousands to millions of common genetic variants (typically SNPs) across the genome for statistical association with a trait or disease in a large cohort, without any prior hypothesis about which genes are involved.

Biology

Biology · L5 · Genome-Scale Analysis

@openstem

Biology · L5 · Genome-Scale Analysis

Flowchart10 objects

Biology

Biology · L3 · The Cell Cycle

@openstem

Biology · L3 · The Cell Cycle

Flowchart11 objects

Biology

Biology · L5 · Prime Editing Reaction Sequence

@openstem

Biology · L5 · Prime Editing Reaction Sequence

Quiz5 questions

According to the size principle, which motor units are recruited first when a muscle produces a small, light-intensity force?

ASmall, low-threshold Type I motor unitsBLarge, high-threshold Type IIx motor unitsCAll motor units are recruited simultaneously regardless of sizeDOnly motor units with the highest innervation ratio

Biology

Biology · L4 · Musculoskeletal Physiology — 5 Q

@openstem

Biology · L4 · Musculoskeletal Physiology — 5 Q

Flashcards10 cards

Summarize the overall products of the light-dependent reactions of photosynthesis that feed into the Calvin cycle.1 / 10

The light-dependent reactions, occurring across the thylakoid membrane, use light energy captured by photosystems II and I to split water (releasing O2), pump protons to build a proton-motive force that drives ATP synthase, and pass electrons through an electron transport chain ultimately reducing NADP+ to NADPH. These two products, ATP and NADPH, are the energy and reducing-power currency exported to the stroma to power carbon fixation in the Calvin cycle; the light reactions alone fix no carbon.

Biology

Biology · L4 · Photosynthesis: Light Reactions and Rubisco

@openstem

Biology · L4 · Photosynthesis: Light Reactions and Rubisco

Note~247 words · 1 min

Animal Sounds in Nature Animals make many different sounds. If you close your eyes and just listen, you can often guess which animal is nearby by the sound it makes. Matching Sounds to Animals Here are some common animal sounds and the anim

Biology

Biology · L1 · Animal Sounds in Nature

@openstem

Biology · L1 · Animal Sounds in Nature

Flashcards10 cards

Describe the amyloidogenic processing pathway of amyloid precursor protein (APP) that generates amyloid-beta (Aβ) peptides in Alzheimer's disease.1 / 10

APP is processed via two competing pathways. In the non-amyloidogenic pathway, alpha-secretase cleaves APP within the Aβ domain, precluding Aβ formation. In the amyloidogenic pathway, beta-secretase (BACE1) first cleaves APP at the N-terminus of the Aβ domain, releasing soluble APPβ and leaving a membrane-bound C99 fragment.

Biology

Biology · L5 · Neurodegenerative Disease Mechanisms

@openstem

Biology · L5 · Neurodegenerative Disease Mechanisms

Flashcards8 cards

What do plants use light for?1 / 8

Plants use light to make food inside their leaves.

Biology

Biology · L1 · Plants and Sunlight

@openstem

Biology · L1 · Plants and Sunlight

Flashcards10 cards

What do we call a big group of ants that live and work together?1 / 10

We call it a colony.

Biology

Biology · L1 · Meet the Ant Colony

@openstem

Biology · L1 · Meet the Ant Colony

Flashcards8 cards

What two environmental changes trigger a leaf to start changing color in autumn?1 / 8

Shorter days (less sunlight) and cooler temperatures signal to the tree that autumn has arrived and it is time to stop making chlorophyll.

Biology

Biology · L2 · Why Leaves Change Color in Autumn

@openstem

Biology · L2 · Why Leaves Change Color in Autumn

Flowchart12 objects

Biology

Biology · L3 · How the Body Regulates Temperature · flowchart

@openstem

Biology · L3 · How the Body Regulates Temperature · flowchart

Flowchart11 objects

Biology

Biology · L5 · BLAST Search Pipeline

@openstem

Biology · L5 · BLAST Search Pipeline

Flowchart5 objects

Biology

Biology · L2 · What Is DNA? Quiz · flowchart

@openstem

Biology · L2 · What Is DNA? Quiz · flowchart

Flashcards10 cards

What is a keystone species, and why is its removal so consequential?1 / 10

A species that exerts an ecological influence disproportionate to its abundance, such that its removal triggers a cascade of change throughout the community. Sea otters are a classic example: by preying on sea urchins, they keep urchin populations low enough for kelp forests to persist. Remove the otters, and urchins overgraze the kelp, collapsing the habitat that many other species depend on.

Biology

Biology · L4 · Community Interactions and Succession

@openstem

Biology · L4 · Community Interactions and Succession

Flowchart9 objects

Biology

Biology · L5 · Protein Folding and Molecular Chaperones · flowchart

@openstem

Biology · L5 · Protein Folding and Molecular Chaperones · flowchart

Flowchart5 objects

Biology

Biology · L2 · Transpiration Quiz · flowchart

@openstem

Biology · L2 · Transpiration Quiz · flowchart

Quiz5 questions

Magnetoreception refers to an animal's ability to:

ATaste changes in water salinityBSense Earth's magnetic fieldCSee ultraviolet light onlyDDetect barometric pressure

Biology

Biology · L3 · Animal Migration and Navigation Quiz

@openstem

Biology · L3 · Animal Migration and Navigation Quiz

Quiz5 questions

Which nutrient group is your body's main source of energy?

ACarbohydratesBProteinCVitaminsDFiber

Biology

Biology · L2 · Food Groups and Nutrition Quiz

@openstem

Biology · L2 · Food Groups and Nutrition Quiz

Flowchart7 objects

Biology

Biology · L1 · How Insects Survive Winter · flowchart

@openstem

Biology · L1 · How Insects Survive Winter · flowchart

Flashcards10 cards

Describe how parietal cells secrete hydrochloric acid into the stomach lumen, and what enzyme provides the substrate needed for this process.1 / 10

Parietal cells use carbonic anhydrase to combine CO2 and water into carbonic acid, which dissociates into H+ and bicarbonate; the H+ is actively pumped into the stomach lumen against a steep concentration gradient by an H+/K+-ATPase (the proton pump) in the apical membrane, while the bicarbonate is exchanged for chloride at the basolateral membrane (the chloride shift), with chloride then following H+ into the lumen through apical channels to combine and form hydrochloric acid. This mechanism can achieve a luminal pH as low as about 1-2, roughly a million-fold higher H+ concentration than in the blood.

Biology

Biology · L4 · Digestive Enzymes, Motility, and Regulation

@openstem

Biology · L4 · Digestive Enzymes, Motility, and Regulation

Flowchart7 objects

Biology

Biology · L2 · Body Systems Working Together: Circulation and Breathing · flowchart

@openstem

Biology · L2 · Body Systems Working Together: Circulation and Breathing · flowchart

‹ PrevPage 45 of 50Next ›