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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.

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Biology: explore STEM content (page 28 of 50) · openstem

Flashcards10 cards

What plant part is an apple?1 / 10

An apple is a fruit. A fruit grows from a flower and holds the plant's seeds.

Biology

Biology · L1 · Fruits and Seeds We Eat

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Biology · L1 · Fruits and Seeds We Eat

Note~1354 words · 7 min

Community and Ecosystem Ecology A biological community is not simply a list of species sharing a location — it is a network of interactions in which each species' presence, abundance, and behavior are shaped by its neighbors. Community ecol

Biology

Community and Ecosystem Ecology

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Community and Ecosystem Ecology

Flashcards9 cards

What is mechanical digestion?1 / 9

Mechanical digestion is breaking food into smaller pieces by physical action, like chewing with teeth or churning in the stomach.

Biology

Biology · L2 · Breaking Down and Using Food

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Biology · L2 · Breaking Down and Using Food

Flowchart7 objects

Biology

Biology · L3 · Blood Types and Transfusion Quiz · flowchart

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Biology · L3 · Blood Types and Transfusion Quiz · flowchart

Flowchart10 objects

Biology

Biology · L3 · Energy Trade-offs of Thermoregulation · flowchart

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Biology · L3 · Energy Trade-offs of Thermoregulation · flowchart

Flowchart9 objects

Biology

Comparative Vertebrate Anatomy · flowchart

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Comparative Vertebrate Anatomy · flowchart

Flashcards10 cards

What do we call a group of elephants or cows?1 / 10

A group of elephants or cows is called a herd.

Biology

Biology · L1 · Special Group Names

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Biology · L1 · Special Group Names

Flashcards10 cards

What is a sensory receptor?1 / 10

A sensory receptor is a specialized cell or nerve ending that detects a specific type of stimulus — such as light, pressure, or a chemical — and converts it into a nerve signal the nervous system can process.

Biology

Biology · L3 · Classifying Receptors by Stimulus

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Biology · L3 · Classifying Receptors by Stimulus

Flowchart9 objects

Biology

Classical Genetics and Inheritance Patterns · flowchart

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Classical Genetics and Inheritance Patterns · flowchart

Flowchart9 objects

Biology

Biology · L2 · Naming a New Species Quiz · flowchart

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Biology · L2 · Naming a New Species Quiz · flowchart

Flowchart5 objects

Biology

Biology · L2 · How Animals Communicate Quiz · flowchart

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Biology · L2 · How Animals Communicate Quiz · flowchart

Collection5 items

01Biology · L5 · Next-Generation Sequencing

02Biology · L5 · Genome-Scale Analysis

03Biology · L5 · Genomics and Bioinformatics: From Reads to Variants and Beyond

+2 more

Biology

Biology · L5 · Genomics and Bioinformatics

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Biology · L5 · Genomics and Bioinformatics

Flowchart11 objects

Biology

Biology · L5 · Determining Structure, Then Quality-Controlling It: From Diffraction to Chaperone-Mediated Folding · flowchart

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Biology · L5 · Determining Structure, Then Quality-Controlling It: From Diffraction to Chaperone-Mediated Folding · flowchart

Flowchart12 objects

Biology

Biology · L5 · STORM/PALM Super-Resolution Imaging Cycle

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Biology · L5 · STORM/PALM Super-Resolution Imaging Cycle

Flowchart11 objects

Biology

CAM Photosynthesis Day-Night Cycle

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CAM Photosynthesis Day-Night Cycle

Flashcards10 cards

What are the five main functions of the integumentary system?1 / 10

Biology

Biology · L3 · Skin Functions, Hair, Nails, and Wound Healing

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Biology · L3 · Skin Functions, Hair, Nails, and Wound Healing

Collection5 items

01Biology · L2 · Germs: Bacteria and Viruses

02Biology · L2 · Your Body's Defenses

03Biology · L2 · Germs and Your Immune System Quiz

+2 more

Biology

Biology · L2 · Germs and Your Immune System

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Biology · L2 · Germs and Your Immune System

Flashcards10 cards

How does the pectoral girdle differ in its connection to the axial skeleton between fish and tetrapods, and why does that matter functionally?1 / 10

In fish, the pectoral girdle is typically attached directly to the skull/opercular bones via bony connections, limiting independent head and forelimb movement and largely serving fin support for swimming. In tetrapods, the pectoral girdle is detached from the skull and instead suspended by muscles (and in some lineages a clavicle strut) from the axial skeleton, allowing independent movement of the head and forelimbs — essential for supporting body weight and generating propulsive force during walking, running, or flight.

Biology

Biology · L4 · Locomotor and Sensory Anatomy Across Vertebrates

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Biology · L4 · Locomotor and Sensory Anatomy Across Vertebrates

Flowchart11 objects

Biology

Biology · L5 · Hi-C Experimental Workflow

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Biology · L5 · Hi-C Experimental Workflow

Flowchart11 objects

Biology

Biology · L5 · Central Tolerance: Thymic Selection

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Biology · L5 · Central Tolerance: Thymic Selection

Note~438 words · 2 min

Meiosis: Making Genetically Distinct Sex Cells Meiosis is the type of cell division that produces gametes — eggs and sperm. It does two things mitosis never does: it cuts the chromosome number in half, and it shuffles genetic material so th

Biology

Biology · L3 · Meiosis: Making Genetically Distinct Sex Cells

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Biology · L3 · Meiosis: Making Genetically Distinct Sex Cells

Flashcards10 cards

What is cellular respiration, in one sentence?1 / 10

Cellular respiration is the process cells use to break down glucose and release its stored chemical energy as ATP, the molecule cells use to power almost everything they do.

Biology

Biology · L3 · Cellular Respiration Stages

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Biology · L3 · Cellular Respiration Stages

Flowchart11 objects

Biology

Plant Hormones and Tropisms · flowchart

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Plant Hormones and Tropisms · flowchart

Flashcards10 cards

What are the three major classes of cell-surface receptors?1 / 10

(1) G-protein-coupled receptors (GPCRs): seven-transmembrane proteins that activate heterotrimeric G proteins. (2) Receptor tyrosine kinases (RTKs): single-pass transmembrane proteins with intrinsic kinase activity, activated by dimerization. (3) Ligand-gated ion channels: bind a ligand and directly open a pore, producing a fast electrical/ionic response (e.g. nicotinic acetylcholine receptor).

Biology