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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 20 of 50) · openstem

Flashcards10 cards

What is a forest habitat?1 / 10

A forest is a home full of trees. Many animals live there, like deer, owls, and squirrels.

Biology

Biology · L1 · Forest, Ocean, and Desert Habitats

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Biology · L1 · Forest, Ocean, and Desert Habitats

Quiz5 questions

What is the key mechanistic difference between N-linked and O-linked glycan biosynthesis?

AN-linked glycosylation transfers a pre-assembled 14-sugar precursor en bloc from dolichol phosphate onto asparagine within a defined sequon, while O-linked glycosylation builds glycans sugar-by-sugar directly on serine/threonine in the Golgi with no single universal precursor.BO-linked glycosylation always occurs before N-linked glycosylation on the same protein.CN-linked and O-linked glycosylation use an identical dolichol-phosphate precursor and consensus sequence.DOnly O-linked glycosylation occurs in the endoplasmic reticulum.

Biology

Biology · L5 · Glycobiology

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Biology · L5 · Glycobiology

Flowchart8 objects

Biology

Biology · L3 · Coevolution and Evolutionary Arms Races · flowchart

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Biology · L3 · Coevolution and Evolutionary Arms Races · flowchart

Flowchart11 objects

Biology

Biology · L5 · Autophagy and Cell Death Pathways · flowchart

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Biology · L5 · Autophagy and Cell Death Pathways · flowchart

Note~357 words · 2 min

Skin Color and Melanin Explained People around the world have skin in a wide range of natural colors, from very light to very dark. What determines a person's particular skin color is a pigment called melanin, made by cells in the skin itse

Biology

Biology · L2 · Skin Color and Melanin Explained

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Biology · L2 · Skin Color and Melanin Explained

Flowchart7 objects

Biology

Evolutionary Developmental Biology: The Toolkit and Its Rewiring · flowchart

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Evolutionary Developmental Biology: The Toolkit and Its Rewiring · flowchart

Flashcards10 cards

What does it mean to "clone" a living thing?1 / 10

Making a clone means creating a genetic copy of an organism — a new individual with (almost) exactly the same DNA as the original. Cloning can happen naturally or be done deliberately in a lab.

Biology

Biology · L3 · What Is Cloning?

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Biology · L3 · What Is Cloning?

Flashcards9 cards

What is a kingdom, in biology?1 / 9

A kingdom is one of the largest groups scientists use to sort living things. Every living thing on Earth belongs to one of five kingdoms, based on features they share.

Biology

Biology · L2 · The Five Kingdoms

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Biology · L2 · The Five Kingdoms

Quiz5 questions

Which enzyme, secreted in saliva, begins the chemical digestion of starch in the mouth?

APepsinBSalivary amylaseCLipaseDTrypsin

Biology

Biology · L3 · The Digestive System

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Biology · L3 · The Digestive System

Flashcards10 cards

What is a virus?1 / 10

A virus is a microscopic particle that can only reproduce by invading a living cell. On its own, outside a host, a virus cannot grow or make copies of itself.

Biology

Biology · L2 · Viruses and Fungi

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Biology · L2 · Viruses and Fungi

Collection5 items

01Biology · L3 · Circulatory System and Thermoregulation Across Vertebrate Classes

02Biology · L3 · Skin, Respiration, and Reproduction Across Vertebrate Classes

03Biology · L3 · Comparative Vertebrate Body Plans Quiz

+2 more

Biology

Biology · L3 · Comparative Vertebrate Anatomy

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Biology · L3 · Comparative Vertebrate Anatomy

Flowchart11 objects

Biology

Biology · L5 · Advanced Virus-Host Interactions · flowchart

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Biology · L5 · Advanced Virus-Host Interactions · flowchart

Flashcards10 cards

What is taxonomy?1 / 10

The branch of biology concerned with identifying, naming, and classifying organisms into a nested system of groups based on shared characteristics and evolutionary relationships.

Biology

Biology · L3 · The Taxonomic Hierarchy and Binomial Nomenclature

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Biology · L3 · The Taxonomic Hierarchy and Binomial Nomenclature

Flowchart12 objects

Biology

Biology · L3 · Enzyme Action (Induced Fit Model)

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Biology · L3 · Enzyme Action (Induced Fit Model)

Flowchart11 objects

Biology

Biology · L2 · From Childhood to Adulthood: The Path of Puberty

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Biology · L2 · From Childhood to Adulthood: The Path of Puberty

Flowchart13 objects

Biology

Biology · L3 · Thermoregulation Strategy Comparison

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Biology · L3 · Thermoregulation Strategy Comparison

Flowchart9 objects

Biology

Biology · L5 · NGS Variant-Calling Workflow

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Biology · L5 · NGS Variant-Calling Workflow

Flashcards10 cards

What does Boyle's law state, and how does it apply to breathing?1 / 10

Boyle's law states that at a constant temperature, the pressure of a gas is inversely proportional to its volume: as volume increases, pressure decreases, and vice versa. During breathing, the respiratory muscles change the volume of the thoracic cavity, which changes the pressure inside the lungs relative to atmospheric pressure, and air flows from the region of higher pressure to the region of lower pressure.

Biology

Biology · L4 · Ventilation Mechanics and Lung Volumes

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Biology · L4 · Ventilation Mechanics and Lung Volumes

Flowchart7 objects

Biology

Biology · L1 · Animal Homes Quiz · flowchart

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Biology · L1 · Animal Homes Quiz · flowchart

Note~244 words · 1 min

Photoperiodism: How Plants Sense Day Length Photoperiodism is a plant's response to the relative length of day and night. It lets a plant time major life events — most famously flowering — to the correct season, without needing to sense tem

Biology

Biology · L3 · Photoperiodism: How Plants Sense Day Length

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Biology · L3 · Photoperiodism: How Plants Sense Day Length

Collection5 items

01Biology · L2 · How Breathing and Circulation Connect

02Biology · L2 · Exercise and the Oxygen Delivery Chain

03Biology · L2 · Body Systems Working Together Quiz

+2 more

Biology

Biology · L2 · Body Systems Working Together

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Biology · L2 · Body Systems Working Together

Flowchart6 objects

Biology

Biology · L1 · Animal Coverings Quiz · flowchart

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Biology · L1 · Animal Coverings Quiz · flowchart

Note~486 words · 2 min

Respiratory Disorders The airway and the alveoli each have a job to do: the airway conducts air to the lungs, and the alveoli exchange oxygen and carbon dioxide with the blood. Different disorders disrupt this system in different places and

Biology

Biology · L3 · Respiratory Disorders

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Biology · L3 · Respiratory Disorders

Note~305 words · 2 min

A Gentle Introduction to Punnett Squares Every pea flower has two alleles for its color — one inherited from each parent. Purple is dominant, so scientists write it with a capital "P". White is recessive, so it gets a lowercase "p". A domin

Biology

Biology · L2 · A Gentle Introduction to Punnett Squares

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Biology · L2 · A Gentle Introduction to Punnett Squares

Note~187 words · 1 min

Bugs and Minibeasts Minibeasts are small animals we find in gardens, parks, and under logs. Insects are one kind of minibeast, but not the only kind. What makes an insect an insect? Minibeasts that are not insects Where to find minibeasts M

Biology

Biology · L1 · Bugs and Minibeasts

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Biology · L1 · Bugs and Minibeasts

Flashcards10 cards

What do the Michaelis-Menten parameters Km and Vmax each represent?1 / 10

Vmax is the maximum reaction rate the enzyme can achieve when substrate concentration is high enough to saturate every active site. Km is the substrate concentration at which the reaction rate equals half of Vmax, and it reflects the apparent affinity of the enzyme for its substrate under the given conditions: a LOW Km indicates the enzyme reaches half-maximal velocity at a low substrate concentration (high apparent affinity), while a HIGH Km indicates more substrate is needed to reach half-maximal velocity (lower apparent affinity).

Biology

Biology · L4 · Enzyme Kinetics and Allosteric Regulation

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Biology · L4 · Enzyme Kinetics and Allosteric Regulation

Flashcards9 cards

What is body language, as a form of animal communication?1 / 9

Body language is a message an animal sends through its posture, movements, or facial expression, without using sound at all.

Biology

Biology · L2 · Body Language and Visual Signals in Animals

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Biology · L2 · Body Language and Visual Signals in Animals

Flashcards10 cards

What is a lymph node?1 / 10

A lymph node is a small, bean-shaped structure found at intervals along lymphatic vessels. Lymph flows through nodes on its way back to the blood, and each node is packed with immune cells that filter out pathogens and debris.

Biology

Biology · L3 · Lymph Nodes, the Spleen, and Immune Defense

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Biology · L3 · Lymph Nodes, the Spleen, and Immune Defense

Note~455 words · 2 min

Regenerative Medicine and Tissue Engineering Regenerative medicine pursues tissue and organ repair through three broad, complementary strategies: providing an instructive scaffold or matrix for cells to build new tissue, growing self-organi

Biology

Biology · L5 · Regenerative Medicine and Tissue Engineering

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Biology · L5 · Regenerative Medicine and Tissue Engineering

Flowchart9 objects

Biology

Biology · L1 · Annual vs. Perennial: How Long Plants Live

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Biology · L1 · Annual vs. Perennial: How Long Plants Live

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