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Biology: explore STEM content (page 38 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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Note~301 words · 2 min

Baby Teeth and Adult Teeth Humans grow two whole sets of teeth in a lifetime. The first set is called baby teeth. The second set is called adult teeth, and it has to last the rest of your life. Your First Teeth Baby teeth start growing in w

Biology

Baby Teeth and Adult Teeth

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Baby Teeth and Adult Teeth

Flowchart8 objects

Biology

Biology · L1 · The Life Cycle of a Plant

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Biology · L1 · The Life Cycle of a Plant

Flashcards7 cards

Match the scientific name to the animal: Canis lupus.1 / 7

The gray wolf.

Biology

Biology · L2 · Practice: Match the Species Name

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Biology · L2 · Practice: Match the Species Name

Flowchart9 objects

Biology

Biology · L5 · Metagenomics and Microbial Ecology · flowchart

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Biology · L5 · Metagenomics and Microbial Ecology · flowchart

Quiz5 questions

Sickle cell anemia is caused by a mutation affecting which protein?

AInsulinBHemoglobinCCollagenDKeratin

Biology

Biology · L3 · Genetic Disorders Quiz

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Biology · L3 · Genetic Disorders Quiz

Flowchart9 objects

Biology

Biology · L5 · Advanced CRISPR Genome Editing · flowchart

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Biology · L5 · Advanced CRISPR Genome Editing · flowchart

Flashcards10 cards

What is an ectotherm?1 / 10

An animal whose body temperature largely matches the temperature of its surroundings, because it does not generate significant heat of its own. Most reptiles, amphibians, fish, and invertebrates are ectotherms.

Biology

Biology · L3 · Ectotherms, Endotherms, and Heterotherms

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Biology · L3 · Ectotherms, Endotherms, and Heterotherms

Collection4 items

01Biology · L4 · Muscle Mechanics and Locomotor Biomechanics

02Biology · L4 · Biomechanics and Animal Locomotion Quiz

03Biomechanics and Animal Locomotion

+1 more

Biology

Biology · L4 · Biomechanics and Animal Locomotion

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Biology · L4 · Biomechanics and Animal Locomotion

Flashcards10 cards

What is a butterfly attracted to on a flower?1 / 10

A butterfly is drawn to a flower's bright colors and its sweet nectar.

Biology

Biology · L1 · Bees, Butterflies, and Mutualism

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Biology · L1 · Bees, Butterflies, and Mutualism

Collection5 items

01Biology · L4 · Biotechnology — Core Lab Techniques

02Biology · L4 · Biotechnology — Modern Applications

03Biology · L4 · Biotechnology and Recombinant DNA Quiz

+2 more

Biology

Biology · L4 · Biotechnology and Recombinant DNA

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Biology · L4 · Biotechnology and Recombinant DNA

Flowchart5 objects

Biology

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

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

Flowchart7 objects

Biology

Biology · L2 · Complete vs. Incomplete Metamorphosis: The Basics · flowchart

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Biology · L2 · Complete vs. Incomplete Metamorphosis: The Basics · flowchart

Quiz5 questions

Which vaccine type is made from a living but very weakened form of the germ?

AWeakened (live-attenuated) vaccineBInactivated vaccineCmRNA vaccineDNone of the above

Biology

Biology · L2 · Vaccine Types Quiz

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Biology · L2 · Vaccine Types Quiz

Collection5 items

01Biology · L5 · Synthetic Biology Design Principles

02Biology · L5 · Synthetic Biology Applications

03Biology · L5 · Synthetic Biology Engineering Quiz

+2 more

Biology

Biology · L5 · Systems and Synthetic Biology

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Biology · L5 · Systems and Synthetic Biology

Flowchart7 objects

Biology

Enzyme Regulation and Allostery · flowchart

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Enzyme Regulation and Allostery · flowchart

Quiz5 questions

Which plant hormone triggers stem elongation and helps break seed dormancy by activating enzymes that mobilize stored food?

AGibberellinsBEthyleneCCytokininsDAbscisic acid

Biology

Biology · L3 · Plant Hormones Beyond Auxin Quiz

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Biology · L3 · Plant Hormones Beyond Auxin Quiz

Collection5 items

01Biology · L1 · Inside a Seed

02Biology · L1 · How Seeds Travel

03Biology · L1 · Inside a Seed and How Seeds Travel Quiz

+2 more

Biology

Biology · L1 · Inside a Seed and How Seeds Travel

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Biology · L1 · Inside a Seed and How Seeds Travel

Flowchart9 objects

Biology

Biology · L3 · Sensory Receptor Types: Classifying by Stimulus · flowchart

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Biology · L3 · Sensory Receptor Types: Classifying by Stimulus · flowchart

Flashcards10 cards

What is a monophyletic group (clade), and how does it differ from a paraphyletic or polyphyletic group?1 / 10

A monophyletic group (clade) consists of an ancestor and ALL of its descendants — a complete branch of the tree. A paraphyletic group includes an ancestor and SOME but not all of its descendants (e.g. traditional 'Reptilia' excluding birds, even though birds descend from the reptilian ancestor). A polyphyletic group includes members from separate branches that do not include their most recent common ancestor, usually because they were grouped by convergent similarity rather than shared ancestry (e.g. grouping 'warm-blooded animals' would lump birds and mammals despite their common ancestor being cold-blooded).

Biology

Biology · L4 · Reading and Building Phylogenetic Trees

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Biology · L4 · Reading and Building Phylogenetic Trees

Collection3 items

01Biology · L5 · Regenerative Medicine and Tissue Engineering

02Biology · L5 · Regenerative Medicine and Tissue Engineering

03Biology · L5 · Regenerative Medicine and Tissue Engineering

Biology

Biology · L5 · Regenerative Medicine and Tissue Engineering

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Biology · L5 · Regenerative Medicine and Tissue Engineering

Flowchart9 objects

Biology

Biology · L3 · ABO Transfusion Compatibility

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Biology · L3 · ABO Transfusion Compatibility

Flowchart5 objects

Biology

Biology · L2 · Your Bones and Muscles Team Up · flowchart

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Biology · L2 · Your Bones and Muscles Team Up · flowchart

Flashcards10 cards

Why is the pituitary gland often called the "master gland"?1 / 10

Because it secretes hormones that regulate the activity of several other endocrine glands, including the thyroid and adrenal glands. The pituitary itself is controlled by the hypothalamus, which sits just above it.

Biology

Biology · L3 · Glands and Hormones

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Biology · L3 · Glands and Hormones

Note~1187 words · 6 min

Evolutionary Developmental Biology: The Toolkit and Its Rewiring Evolutionary developmental biology (evo-devo) grew out of a puzzle that classical comparative morphology and population genetics could not, on their own, resolve: given that t

Biology

Evolutionary Developmental Biology: The Toolkit and Its Rewiring

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Evolutionary Developmental Biology: The Toolkit and Its Rewiring

Note~417 words · 2 min

Three Ways Plants Grow Without Seeds Not every new plant starts life as a seed. Many plants can also reproduce asexually — growing an entirely new plant from a piece of a parent plant. Because no egg cell and sperm cell combine, there is no

Biology

Biology · L2 · Three Ways Plants Grow Without Seeds

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Biology · L2 · Three Ways Plants Grow Without Seeds

Flashcards9 cards

What is the heart?1 / 9

The heart is a muscle about the size of your fist. It squeezes over and over to push blood all around your body.

Biology

Biology · L2 · The Heart

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Biology · L2 · The Heart

Collection5 items

01Biology · L5 · Stem Cell Types and Potency

02Biology · L5 · Reprogramming and Regenerative Biology

03Biology · L5 · Stem Cells and Regenerative Biology

+2 more

Biology

Biology · L5 · Stem Cells and Regenerative Biology

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Biology · L5 · Stem Cells and Regenerative Biology

Flashcards11 cards

Describe the structure of DNA (Watson-Crick model).1 / 11

DNA is a right-handed double helix: two antiparallel polynucleotide strands wound around each other. Each strand is a polymer of deoxyribonucleotides linked by 3′-5′ phosphodiester bonds. Complementary base pairs are joined by hydrogen bonds: A–T (2 H-bonds) and G–C (3 H-bonds). The sugar-phosphate backbones face outward; bases face inward.

Biology

Biology · L4 · Molecular Biology — DNA, RNA & Protein

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Biology · L4 · Molecular Biology — DNA, RNA & Protein

Note~347 words · 2 min

Biodiversity Under Threat Biodiversity is the variety of life found in an area, measured at the genetic, species, and ecosystem level. It underpins ecosystem resilience, supplies food and medicine, and provides free services like clean wate

Biology

Biology · L3 · Biodiversity Under Threat

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Biology · L3 · Biodiversity Under Threat

Flashcards10 cards

What does "cold-blooded" mean?1 / 10

A cold-blooded animal cannot make its own body heat. Its body temperature changes to match its surroundings.

Biology

Biology · L1 · Cold-Blooded Animals

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Biology · L1 · Cold-Blooded Animals

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