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Biology: explore STEM content (page 16 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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Flashcards10 cards

What is transpiration?1 / 10

Transpiration is the loss of water vapor from a plant, mostly evaporating out through tiny pores in the leaves called stomata.

Biology

Biology · L2 · The Transpiration Process

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Biology · L2 · The Transpiration Process

Flowchart7 objects

Biology

Biology · L3 · The Integumentary System · flowchart

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Biology · L3 · The Integumentary System · flowchart

Flowchart7 objects

Biology

Biology · L2 · From Invader to Marked for Destruction

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Biology · L2 · From Invader to Marked for Destruction

Flowchart7 objects

Biology

Biology · L2 · How Animals Talk to Each Other · flowchart

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Biology · L2 · How Animals Talk to Each Other · flowchart

Flashcards10 cards

What is a mammal mother's milk made especially for?1 / 10

It is made just for her own babies, giving them the nutrients they need to grow strong and fast.

Biology

Biology · L1 · Nursing, Feeding, and Teaching Baby Animals

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Biology · L1 · Nursing, Feeding, and Teaching Baby Animals

Flowchart13 objects

Biology

Biology · L3 · Animal Thermoregulation Strategies · flowchart

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Biology · L3 · Animal Thermoregulation Strategies · flowchart

Collection5 items

01Biology · L2 · The Eye: Structure and Vision

02Biology · L2 · The Ear, Skin, and Other Senses

03Biology · L2 · Sense Organs Quiz

+2 more

Biology

Biology · L2 · Sense Organs

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Biology · L2 · Sense Organs

Flowchart11 objects

Biology

Biology · L2 · Cellular Respiration Word Equation

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Biology · L2 · Cellular Respiration Word Equation

Quiz5 questions

What do many trees do in autumn (fall)?

AGrow bright new flowersBLose their leavesCGrow much taller overnightDTurn into evergreen trees

Biology

Seasons and Living Things Quiz

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Seasons and Living Things Quiz

Note~248 words · 1 min

Food Groups and a Balanced Diet Every day, your body needs a mix of different nutrients to grow, repair itself, and have enough energy to move, think, and stay healthy. No single food provides everything you need, which is why eating a vari

Biology

Biology · L2 · Food Groups and a Balanced Diet

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Biology · L2 · Food Groups and a Balanced Diet

Flowchart11 objects

Biology

Biology · L1 · Your Five Sense Organs

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Biology · L1 · Your Five Sense Organs

Quiz5 questions

Why does a cytosine base editor avoid the indels and translocations associated with standard Cas9 nuclease editing?

AIt uses a guide RNA with no PAM requirement at all.BIt uses a Cas9 nickase rather than a double-strand-cutting nuclease, so only one DNA strand is nicked while the deaminase-edited base is copied by the cell's own mismatch repair, avoiding a double-strand break intermediate.CIt does not require any Cas protein at all.DIt works only on RNA, never on genomic DNA.

Biology

Biology · L5 · Advanced CRISPR Genome Editing

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Biology · L5 · Advanced CRISPR Genome Editing

Flowchart5 objects

Biology

Biology · L3 · Animal Migration and Navigation Quiz · flowchart

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Biology · L3 · Animal Migration and Navigation Quiz · flowchart

MoleculeNc1cc[nH]c(=O)n1

Biology

Biology · L3 · Cytosine (DNA/RNA base)

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Biology · L3 · Cytosine (DNA/RNA base)

Flowchart16 objects

Biology

Biology · L3 · How a Lymph Node Filters Pathogens

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Biology · L3 · How a Lymph Node Filters Pathogens

Note~186 words · 1 min

Warm-Blooded and Cold-Blooded Animals Every animal needs to control its body temperature to stay alive. But different animal groups do this in very different ways. Making Your Own Heat Mammals and birds are warm-blooded. Their bodies burn e

Biology

Warm-Blooded and Cold-Blooded Animals

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Warm-Blooded and Cold-Blooded Animals

Note~383 words · 2 min

Phylogenomics and Comparative Genomics Phylogenomics extends classical phylogenetics to genome-scale data, confronting the reality that different genomic loci can carry genuinely different evolutionary histories, and using patterns of seque

Biology

Biology · L5 · Phylogenomics and Comparative Genomics

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Biology · L5 · Phylogenomics and Comparative Genomics

Flashcards10 cards

What is a body covering?1 / 10

A body covering is the layer on the outside of an animal, like fur, feathers, scales, or skin. It protects the animal and helps it survive.

Biology

Biology · L1 · Fur and Feathers

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Biology · L1 · Fur and Feathers

Collection5 items

01Biology · L5 · Advanced Mitochondrial Bioenergetics

02Biology · L5 · Advanced Mitochondrial Bioenergetics

03Biology · L5 · PINK1/Parkin Mitophagy Pathway

+2 more

Biology

Biology · L5 · Advanced Mitochondrial Bioenergetics

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Biology · L5 · Advanced Mitochondrial Bioenergetics

Quiz5 questions

An enzyme has a very low Km for its substrate compared to a second enzyme acting on the same substrate. What does this indicate?

AThe low-Km enzyme has a higher affinity for the substrate and reaches half-maximal rate at a lower substrate concentrationBThe low-Km enzyme has a lower affinity for the substrate and requires more substrate to become saturatedCThe low-Km enzyme necessarily has a higher Vmax than the second enzymeDKm provides no information about substrate affinity

Biology

Biology · L4 · Enzyme Kinetics and Metabolism Quiz

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Biology · L4 · Enzyme Kinetics and Metabolism Quiz

Collection1 items

01Biology · L4 · Cell Structure & Organelles

Biology

Biology · L4 · Cell Biology Essentials

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Biology · L4 · Cell Biology Essentials

Flashcards8 cards

What does 'classification' mean in biology?1 / 8

Classification means sorting living things into groups based on features they share, such as how they get food, how many cells they have, or what their bodies are made of.

Biology

Biology · L2 · Why We Classify Living Things

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Biology · L2 · Why We Classify Living Things

Quiz5 questions

Which type of ecological pyramid can never be inverted, under any circumstances?

APyramid of numbersBPyramid of biomassCPyramid of energyDAll three can be inverted

Biology

Biology · L3 · Ecological Pyramids Quiz

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Biology · L3 · Ecological Pyramids Quiz

Flashcards9 cards

State Anfinsen's thermodynamic hypothesis and describe the experimental evidence (the ribonuclease A refolding experiment) that supported it.1 / 9

Anfinsen's thermodynamic hypothesis holds that a protein's native, functional three-dimensional structure is (for many single-domain proteins) the thermodynamically most stable conformation under physiological conditions, and that this structure is determined entirely by the protein's amino acid sequence — meaning a denatured protein should be able to spontaneously refold to its correct native structure without any additional information, given the right solution conditions.

Biology

Biology · L5 · Protein Folding and Molecular Chaperones

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Biology · L5 · Protein Folding and Molecular Chaperones

MoleculeCC(C)C(C(=O)O)N

Biology

Biology · L3 · Valine (amino acid)

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Biology · L3 · Valine (amino acid)

Note~527 words · 3 min

Virology Basics Viruses are obligate intracellular parasites: they carry genetic information but no independent metabolism or ribosomes, and must hijack a host cell's machinery to replicate. Their enormous diversity in genome type and repli

Biology