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Biology: explore STEM content (page 19 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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Flowchart9 objects

Biology

Biology · L3 · Respiratory Disorders · flowchart

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Biology · L3 · Respiratory Disorders · flowchart

Quiz5 questions

How do mammal mothers usually feed their babies?

AMilk from their own bodyBFood they bring up from their stomachCThey do not feed them at allDInsects they catch and drop nearby

Biology

Biology · L1 · How Animal Parents Care for Their Young Quiz

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Biology · L1 · How Animal Parents Care for Their Young Quiz

Flashcards11 cards

State Darwin's four postulates of natural selection.1 / 11

(1) Variation: individuals in a population vary in heritable traits. (2) Heritability: traits are passed from parents to offspring. (3) Overproduction: more offspring are born than can survive. (4) Differential survival and reproduction: individuals with advantageous traits survive and reproduce more, passing those traits to the next generation.

Biology

Biology · L4 · Evolution & Natural Selection

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Biology · L4 · Evolution & Natural Selection

Flowchart7 objects

Biology

Biology · L3 · Allergies and Autoimmune Disease Quiz · flowchart

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Biology · L3 · Allergies and Autoimmune Disease Quiz · flowchart

Note~959 words · 5 min

Cardiovascular Physiology Cardiovascular physiology examines how the heart generates blood flow and how the body regulates blood pressure moment to moment. Two ideas anchor this chapter: cardiac output, the volume of blood the heart pumps p

Biology

Biology · L4 · Cardiovascular Physiology

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Biology · L4 · Cardiovascular Physiology

Flashcards8 cards

Where might you find sleeping insects on a winter walk?1 / 8

Under loose bark, inside piles of leaves, in cracks, or under logs and stones.

Biology

Biology · L1 · Small Creatures, Big Winter Plans

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Biology · L1 · Small Creatures, Big Winter Plans

Flowchart9 objects

Biology

Biology · L3 · The Process of Natural Selection

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Biology · L3 · The Process of Natural Selection

Flowchart5 objects

Biology

Biology · L2 · Why Do Lifespans Vary So Much? · flowchart

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Biology · L2 · Why Do Lifespans Vary So Much? · flowchart

Collection5 items

01Biology · L2 · What Are Hormones?

02Biology · L2 · Key Glands and Their Jobs

03Biology · L2 · Hormones and Glands Quiz

+2 more

Biology

Biology · L2 · Hormones and Glands

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Biology · L2 · Hormones and Glands

Quiz5 questions

What key experimental step distinguishes Hi-C from the earlier, locus-specific 3C technique?

AHi-C requires no crosslinking of chromatin at all.BHi-C biotinylates ligation junctions and sequences the resulting library genome-wide, rather than requiring locus-specific PCR primers designed for a single candidate pair of loci.CHi-C can only be performed on isolated, purified DNA with no cells involved.DHi-C uses a different crosslinking chemistry that does not involve formaldehyde.

Biology

Biology · L5 · Chromatin and 3D Genome Organization

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Biology · L5 · Chromatin and 3D Genome Organization

Flowchart11 objects

Biology

Biology · L5 · Aging Biology and Cellular Senescence · flowchart

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Biology · L5 · Aging Biology and Cellular Senescence · flowchart

Collection4 items

01Biology · L4 · Human Microbiome Composition and Function

02Biology · L4 · Human Microbiome Quiz

03The Human Microbiome

+1 more

Biology

Biology · L4 · Human Microbiome

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Biology · L4 · Human Microbiome

Quiz5 questions

Which of these best describes the basic idea behind almost every food preservation method?

AAdding artificial preservative chemicals to the foodBChanging the food's environment so microbes cannot grow wellCMaking the food taste strongerDCooking the food until it changes color

Biology

Biology · L2 · Food Preservation Quiz

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Biology · L2 · Food Preservation Quiz

Quiz5 questions

Which muscle type is striated, under voluntary control, and attached to bone by tendons?

ASkeletal muscleBSmooth muscleCCardiac muscleDConnective tissue

Biology

Biology · L3 · The Muscular System

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Biology · L3 · The Muscular System

Flowchart7 objects

Biology

Stages of Cellular Respiration

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Stages of Cellular Respiration

Flashcards10 cards

What is the human microbiome, and how does it differ from the human microbiota?1 / 10

The human microbiota refers to the community of microorganisms (bacteria, archaea, fungi, viruses) living in and on the human body. The human microbiome refers more specifically to the collective genomes of that community — its total genetic and functional potential — which vastly exceeds the roughly 20,000 protein-coding genes in the human genome itself, since the gut microbiota alone is estimated to contribute hundreds of times more unique genes, encoding metabolic capabilities the human genome does not have.

Biology

Biology · L4 · Human Microbiome Composition and Function

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Biology · L4 · Human Microbiome Composition and Function

Flowchart11 objects

Biology

Biology · L1 · From Baby Tooth to Adult Tooth

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Biology · L1 · From Baby Tooth to Adult Tooth

Quiz5 questions

What do we call an animal that is awake during the day?

ANocturnalBDiurnalCAquaticDHibernating

Biology

Biology · L1 · Day and Night Animals Quiz

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Biology · L1 · Day and Night Animals Quiz

Flowchart5 objects

Biology

Biology · L3 · Herd Immunity · flowchart

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Biology · L3 · Herd Immunity · flowchart

Flashcards10 cards

What is natural selection?1 / 10

The process by which individuals with heritable traits better suited to their environment survive and reproduce at higher rates, passing those traits to offspring. It is a mechanism of evolution, not evolution itself.

Biology

Biology · L3 · Mechanisms of Evolution

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Biology · L3 · Mechanisms of Evolution

Quiz5 questions

What is the main purpose of a microscope?

ATo make sound louder so scientists can study animalsBTo magnify tiny objects so we can see details invisible to the naked eyeCTo measure the weight of a specimenDTo keep a specimen alive indefinitely

Biology

Biology · L2 · Microscopes and the Discovery of Cells Quiz

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Biology · L2 · Microscopes and the Discovery of Cells Quiz

Collection4 items

01Biology · L2 · The Five Kingdoms

02Biology · L2 · Why We Classify Living Things

03Biology · L2 · Classifying Living Things Quiz

+1 more

Biology

Biology · L2 · Classifying Living Things

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Biology · L2 · Classifying Living Things

Flowchart20 objects

Biology

Biology · L4 · Cell cycle: phases, checkpoints, and regulation

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Biology · L4 · Cell cycle: phases, checkpoints, and regulation

Flashcards10 cards

What is magnetoreception?1 / 10

The ability to sense Earth's magnetic field and use it as a directional compass or even a rough map of location.

Biology

Biology · L3 · Navigation Mechanisms in Migrating Animals

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Biology · L3 · Navigation Mechanisms in Migrating Animals

Flowchart7 objects

Biology

Biology · L4 · CRISPR-Cas9 gene editing pathway

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Biology · L4 · CRISPR-Cas9 gene editing pathway

Flowchart16 objects

Biology

Biology · L3 · Thermoregulation Negative Feedback Loop

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Biology · L3 · Thermoregulation Negative Feedback Loop

Flashcards9 cards

What is an organelle?1 / 9

An organelle is a small structure inside a cell that does a specific job — the way an organ (like the heart or lungs) does a specific job inside your body.

Biology