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 43 of 50) · openstem

Quiz5 questions

A wildlife population shows differences in coat color, size, and disease resistance among its individual members. Which level of biodiversity does this describe?

AEcosystem diversityBGenetic diversityCSpecies diversityDHabitat diversity

Biology

Biology · L3 · Biodiversity and Conservation Quiz

@openstem

Biology · L3 · Biodiversity and Conservation Quiz

Collection5 items

01Biology · L2 · The Stages of Human Life

02Biology · L2 · Comparing Growth Across Animals

03Biology · L2 · Human Life Stages Quiz

+2 more

Biology

Biology · L2 · Growing Up: Human Life Stages

@openstem

Biology · L2 · Growing Up: Human Life Stages

Collection5 items

01Biology · L3 · Bacterial Structure and Classification

02Biology · L3 · Viruses and Infection

03Biology · L3 · Microbiology: Bacteria and Viruses

+2 more

Biology

Biology · L3 · Microbiology

@openstem

Biology · L3 · Microbiology

Quiz3 questions

Which body part do you use to hear sounds?

AEyesBNoseCEarsDHands

Biology

Biology · L1 · Your Five Senses

@openstem

Biology · L1 · Your Five Senses

Flashcards10 cards

What are the two broad chemical classes of hormones, and what property determines which mechanism each uses?1 / 10

Lipid-soluble hormones (steroids, thyroid hormone) diffuse through the plasma membrane and bind intracellular receptors. Water-soluble hormones (peptides/proteins, catecholamines) cannot cross the lipid bilayer, so they bind membrane receptors and trigger intracellular second-messenger cascades. Solubility, set by chemical structure, dictates which mechanism a hormone must use.

Biology

Biology · L4 · Hormone Classes & Receptor Mechanisms

@openstem

Biology · L4 · Hormone Classes & Receptor Mechanisms

Note~198 words · 1 min

Plants and Animals Plants and animals are both living things. But they are not exactly the same. Let's look at how they are alike, and how they are different. How They Are Alike How They Are Different Plants and Animals at a Glance So plant

Biology

Plants and Animals

@openstem

Plants and Animals

Flowchart15 objects

Biology

Convergence of the Extrinsic and Intrinsic Coagulation Pathways

@openstem

Convergence of the Extrinsic and Intrinsic Coagulation Pathways

Flashcards10 cards

What is a fixed action pattern (FAP), and what triggers it?1 / 10

A fixed action pattern is a stereotyped, species-typical behavioral sequence that, once initiated, runs to completion largely independent of further sensory feedback. It is released by a specific, often simple stimulus feature called a sign stimulus (or releaser) — for example, a red belly triggering aggressive display in male sticklebacks, or an egg-shaped object outside the nest triggering egg-retrieval in geese. FAPs are considered innate because they appear in full form even in individuals with no opportunity to learn them.

Biology

Biology · L4 · Innate Behavior and Learning

@openstem

Biology · L4 · Innate Behavior and Learning

Flowchart10 objects

Biology

Animal Teeth: Shapes Show What They Eat · flowchart

@openstem

Animal Teeth: Shapes Show What They Eat · flowchart

Quiz5 questions

A small group of birds is blown to a remote island and founds a new, genetically distinct population through drift acting on a small founding group. This is an example of:

ASympatric speciation via disruptive selectionBPeripatric speciation via a founder effectCParapatric speciation across a hybrid zoneDReinforcement of prezygotic isolation

Biology

Biology · L4 · Speciation Mechanisms Quiz

@openstem

Biology · L4 · Speciation Mechanisms Quiz

Flashcards10 cards

How is the structure of an artery wall suited to its function?1 / 10

Artery walls are thick, muscular, and elastic. This lets them withstand the high pressure of blood surging directly from the heart and stretch with each pulse, helping push blood onward.

Biology

Biology · L3 · Blood Vessels and Blood Composition

@openstem

Biology · L3 · Blood Vessels and Blood Composition

Flowchart5 objects

Biology

Biology · L2 · How Desert Plants Store Water Quiz · flowchart

@openstem

Biology · L2 · How Desert Plants Store Water Quiz · flowchart

Flashcards8 cards

Why do many nocturnal animals have big eyes?1 / 8

Big eyes let in more light, which helps nocturnal animals see better when it is dark outside.

Biology

Biology · L1 · Bodies Built for the Dark

@openstem

Biology · L1 · Bodies Built for the Dark

Collection4 items

01Biology · L4 · Reading and Building Phylogenetic Trees

02Biology · L4 · Phylogenetics and Cladistics Quiz

03Phylogenetics and Cladistics

+1 more

Biology

Biology · L4 · Phylogenetics and Cladistics

@openstem

Biology · L4 · Phylogenetics and Cladistics

Flowchart11 objects

Biology

Biology · L5 · Chromatin Remodeling and Non-Coding RNA in Epigenetic Regulation · flowchart

@openstem

Biology · L5 · Chromatin Remodeling and Non-Coding RNA in Epigenetic Regulation · flowchart

Quiz5 questions

Which gland is often called the "master gland" because it controls the activity of several other endocrine glands?

AThyroid glandBPituitary glandCAdrenal glandDPancreas

Biology

Biology · L3 · The Endocrine System Quiz

@openstem

Biology · L3 · The Endocrine System Quiz

Flowchart9 objects

Biology

Primary Succession

@openstem

Primary Succession

Quiz5 questions

Where on an antibody monomer is the antigen-binding site located?

AAt the base of the constant region stemBAt the tips of the variable regions, where a heavy and light chain pairCAlong the entire length of the heavy chainDWithin the disulfide bonds linking the two heavy chains

Biology

Biology · L4 · Immunology

@openstem

Biology · L4 · Immunology

Collection5 items

01Biology · L4 · Motor Units & Muscle Fiber Types

02Biology · L4 · Bone Remodeling & Calcium Homeostasis

03Biology · L4 · Musculoskeletal physiology: motor control and bone homeostasis

+2 more

Biology

Biology · L4 · Musculoskeletal Physiology

@openstem

Biology · L4 · Musculoskeletal Physiology

Collection5 items

01Biology · L3 · Allergies: The IgE-Histamine Pathway

02Biology · L3 · Autoimmune Disease: When the Body Attacks Itself

03Biology · L3 · Allergies and Autoimmune Disease Quiz

+2 more

Biology

Biology · L3 · Allergies and Autoimmune Disease

@openstem

Biology · L3 · Allergies and Autoimmune Disease

Collection5 items

01Biology · L5 · Chromatin Remodeling Complexes & the Histone Code

02Biology · L5 · Non-Coding RNA and Genomic Imprinting

03Biology · L5 · Chromatin Remodeling and Non-Coding RNA in Epigenetic Regulation

+2 more

Biology

Biology · L5 · Advanced Epigenetics and Chromatin Biology

@openstem

Biology · L5 · Advanced Epigenetics and Chromatin Biology

Flowchart11 objects

Biology

Biology · L2 · From Shortest to Longest Lifespan

@openstem

Biology · L2 · From Shortest to Longest Lifespan

Flowchart5 objects

Biology

Biology · L1 · Plants and Sunlight · flowchart

@openstem

Biology · L1 · Plants and Sunlight · flowchart

Flashcards10 cards

What is biodiversity?1 / 10

Biodiversity is the total variety of life in a given area, usually described at three levels: genetic diversity within a species, species diversity within a community, and ecosystem diversity across a landscape. High biodiversity generally signals a healthy, resilient environment.

Biology

Biology · L3 · What Biodiversity Is and Why It Matters

@openstem

Biology · L3 · What Biodiversity Is and Why It Matters

Quiz5 questions

Which structural feature causes Gram-positive bacteria to stain purple in a Gram stain?

AA thick peptidoglycan cell wall that retains crystal violet dyeBA thin peptidoglycan layer with an outer lipid membraneCA plasmid carrying resistance genesDA flagellum used for movement

Biology

Biology · L3 · Microbiology

@openstem

Biology · L3 · Microbiology

Quiz5 questions

Who is the only ant in a colony that lays eggs?

AQueen antBSoldier antCForager antDBuilder ant

Biology

Biology · L1 · How Ants Work Together Quiz

@openstem

Biology · L1 · How Ants Work Together Quiz

Flashcards10 cards

What is the arctic like?1 / 10

The arctic is very cold. It is covered in snow and ice most of the year.

Biology

Biology · L1 · Arctic, Pond, and Rainforest Habitats

@openstem

Biology · L1 · Arctic, Pond, and Rainforest Habitats

Note~273 words · 1 min

How We Keep Food From Spoiling Mold, bacteria, and other microbes are what cause food to spoil. This note isn't about the biology of spoilage — it's about the clever tricks humans have invented, long before refrigerators existed, to slow th

Biology

Biology · L2 · How We Keep Food From Spoiling

@openstem

Biology · L2 · How We Keep Food From Spoiling

Flowchart6 objects

Biology

Biology · L3 · The Other Plant Hormones: Gibberellins, Ethylene, Cytokinins, and ABA · flowchart

@openstem

Biology · L3 · The Other Plant Hormones: Gibberellins, Ethylene, Cytokinins, and ABA · flowchart

Flashcards9 cards

What are cancer-associated fibroblasts (CAFs), and by what mechanisms do they promote tumor progression?1 / 9

Cancer-associated fibroblasts are a heterogeneous, activated fibroblast population within the tumor stroma, arising from resident fibroblasts, pericytes, mesenchymal stem cells, or epithelial cells via transdifferentiation, typically marked by alpha-smooth muscle actin and FAP (fibroblast activation protein) expression, though CAF subtypes vary considerably in marker expression and function.

Biology

Biology · L5 · Tumor Microenvironment and Metastasis

@openstem

Biology · L5 · Tumor Microenvironment and Metastasis

‹ PrevPage 43 of 50Next ›