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Biology: explore STEM content (page 7 of 50) · openstem

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

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Flowchart11 objects

Biology

Biology · L2 · How the Body Removes Waste: Skin and Kidneys

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Biology · L2 · How the Body Removes Waste: Skin and Kidneys

Collection5 items

01Biology · L5 · Protein Folding and Molecular Chaperones

02Biology · L5 · Protein Folding and Molecular Chaperones

03Biology · L5 · Hsp70 ATP-Dependent Chaperone Cycle

+2 more

Biology

Biology · L5 · Protein Folding and Molecular Chaperones

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Biology · L5 · Protein Folding and Molecular Chaperones

Flowchart7 objects

Biology

Biology · L1 · From Runner to New Plant

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Biology · L1 · From Runner to New Plant

Quiz5 questions

What are the four stages of complete metamorphosis, in order?

AEgg, nymph, pupa, adultBEgg, larva, pupa, adultCLarva, egg, pupa, adultDEgg, larva, nymph, adult

Biology

Biology · L2 · Complete vs. Incomplete Metamorphosis Quiz

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Biology · L2 · Complete vs. Incomplete Metamorphosis Quiz

Quiz5 questions

Which structure surrounds the glomerulus and collects the fluid filtered out of it?

AThe renal tubuleBBowman's capsuleCThe collecting ductDThe ureter

Biology

Biology · L3 · The Excretory System

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Biology · L3 · The Excretory System

Flashcards10 cards

What is auxin (indole-3-acetic acid), where is it primarily synthesized, and how is it transported through the plant?1 / 10

Auxin is the primary hormone controlling directional growth, synthesized mainly in shoot apical meristems and young leaves. Unlike most hormones, which move passively through the phloem or diffusion, auxin undergoes polar transport: influx carriers (AUX1) and efflux carriers (PIN proteins), asymmetrically localized on one side of each cell, actively move auxin cell-to-cell in a consistent direction (typically basipetal, from shoot tip toward the root), and the polarized positioning of PIN proteins can itself be dynamically redirected in response to gravity or light, making auxin transport both directional and adjustable.

Biology

Biology · L4 · Plant Hormones

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Biology · L4 · Plant Hormones

Flowchart13 objects

Biology

Biology · L1 · Special Names for Animal Groups

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Biology · L1 · Special Names for Animal Groups

Flashcards9 cards

What body part helps most birds fly?1 / 9

Wings help most birds fly through the air.

Biology

Biology · L1 · Wings, Fins & No Legs at All

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Biology · L1 · Wings, Fins & No Legs at All

Quiz5 questions

Which of these best describes herd immunity?

AA single vaccine that protects against every disease at onceBProtection for a whole community, including people who cannot be vaccinated, when enough people are immuneCA medicine that cures a disease after someone is already sickDA rule that requires everyone in a community to be vaccinated with no exceptions

Biology

Biology · L2 · Herd Immunity Quiz

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Biology · L2 · Herd Immunity Quiz

Flowchart15 objects

Biology

Biology · L1 · Born Alive or Hatched From an Egg? · flowchart

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Biology · L1 · Born Alive or Hatched From an Egg? · flowchart

Quiz5 questions

Which vertebrate class has a heart with just two chambers — one atrium and one ventricle?

AFishBAmphibiansCReptilesDMammals

Biology

Biology · L3 · Comparative Vertebrate Body Plans Quiz

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Biology · L3 · Comparative Vertebrate Body Plans Quiz

Collection5 items

01Biology · L4 · Plant Hormones

02Biology · L4 · Tropisms and Photoperiodism

03Biology · L4 · Plant Hormones and Tropisms Quiz

+2 more

Biology

Biology · L4 · Plant Hormones and Tropisms

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Biology · L4 · Plant Hormones and Tropisms

Flashcards10 cards

What does a tadpole grow into?1 / 10

A tadpole grows into a frog.

Biology

How Baby Animals Grow and Change

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How Baby Animals Grow and Change

Note~293 words · 1 min

Evidence for evolution Evolutionary theory is supported by multiple, independent lines of evidence drawn from different branches of biology. Each type of evidence points to the same conclusion: living species share common ancestry and have

Biology

Biology · L3 · Evidence for Evolution

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Biology · L3 · Evidence for Evolution

Collection4 items

01Biology · L2 · Shared Organelles: Plant and Animal Cells

02Biology · L2 · What Makes Plant Cells Different

03Biology · L2 · Cell Structure and Organelles Quiz

+1 more

Biology

Biology · L2 · Cell Structure and Organelles

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Biology · L2 · Cell Structure and Organelles

MoleculeC(C(C(=O)O)N)O

Biology

Biology · L3 · Serine (amino acid)

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Biology · L3 · Serine (amino acid)

Flowchart17 objects

Biology

Biology · L1 · Animal Coverings: Fur, Feathers, Scales, and Skin · flowchart

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Biology · L1 · Animal Coverings: Fur, Feathers, Scales, and Skin · flowchart

Flowchart13 objects

Biology

Biology · L2 · How Scientists Name a New Species · flowchart

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Biology · L2 · How Scientists Name a New Species · flowchart

Flowchart7 objects

Biology

Biology · L1 · From Egg to Chick: How a Bird Develops · flowchart

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Biology · L1 · From Egg to Chick: How a Bird Develops · flowchart

Flashcards8 cards

What is the difference between a food chain and a food web?1 / 8

A food chain is a single linear sequence of who eats whom (producer → primary consumer → secondary consumer → tertiary consumer). A food web is a network of interconnected food chains representing the more realistic, complex feeding relationships in an ecosystem. Each step is a trophic level; only ~10% of energy transfers to the next level.

Biology

Biology · L4 · Ecology — Populations, Communities & Ecosystems

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Biology · L4 · Ecology — Populations, Communities & Ecosystems

Quiz5 questions

Which drink is best for your body every day?

ASodaBWaterCSugary punchDCandy juice

Biology

Biology · L1 · Staying Healthy Quiz

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Biology · L1 · Staying Healthy Quiz

Flowchart7 objects

Biology

Hox Gene Colinearity and Body-Plan Patterning

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Hox Gene Colinearity and Body-Plan Patterning

Flowchart9 objects

Biology

Biology · L2 · Discovering Cells: Microscopes and Cell Theory · flowchart

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Biology · L2 · Discovering Cells: Microscopes and Cell Theory · flowchart

Collection4 items

01Biology · L4 · Modes of Speciation

02Biology · L4 · Reproductive Isolation and Species Boundaries

03Biology · L4 · Speciation Mechanisms Quiz

+1 more

Biology

Biology · L4 · Speciation Mechanisms

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Biology · L4 · Speciation Mechanisms

Flashcards9 cards

Do all new plants grow from seeds?1 / 9

No. Some plants can grow new plants in other ways, without using a seed at all.

Biology

Biology · L1 · Runners and Bulbs

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Biology · L1 · Runners and Bulbs

Flashcards10 cards

Describe the basic structural shape of an antibody monomer.1 / 10

An antibody monomer is Y-shaped, built from four polypeptide chains held together by disulfide bonds: two identical heavy chains and two identical light chains. The two arms of the Y form the antigen-binding regions, and the stem is the constant region.

Biology

Biology · L4 · Antibody Structure and MHC

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Biology · L4 · Antibody Structure and MHC

Flowchart6 objects

Biology

Biology · L3 · Coevolution and Arms Races Quiz · flowchart

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Biology · L3 · Coevolution and Arms Races Quiz · flowchart

Flashcards10 cards

What is a biennial plant?1 / 10

A biennial plant lives for two years before it dies.

Biology

Biology · L1 · Biennial Plants and Comparing Lifespans

@openstem

Biology · L1 · Biennial Plants and Comparing Lifespans

Collection5 items

01Biology · L3 · The ABO and Rh Blood Group Systems

02Biology · L3 · Transfusion Compatibility and Reactions

03Biology · L3 · Blood Types and Transfusion Quiz

+2 more

Biology

Biology · L3 · Blood Types and Transfusion

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Biology · L3 · Blood Types and Transfusion

Note~303 words · 2 min

Growing Up: An Introduction to Human Reproduction As people grow from childhood into adulthood, their bodies go through a stage of change called puberty. Puberty is a normal, healthy part of life that every person experiences, though not al

Biology

Biology · L2 · Growing Up: An Introduction to Human Reproduction

@openstem

Biology · L2 · Growing Up: An Introduction to Human Reproduction

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