Make it yours.Save notes, decks & boards to your own library.

openstem

Explore

Spaces

My Library

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

Loading…

loading…

About Privacy Terms of Service© openstem

We use privacy-friendly product analytics (no session recording, PII masked) to improve OpenStem. Load analytics? Privacy Policy

openstem

Explore

Groups Favorites

Collections Notes Flashcards Quizzes Sketches Flowcharts Plots Molecules

Make it yours.Save notes, decks & boards to your own library.

Get started Sign in

Explore Groups Favorites

Biology: explore STEM content (page 22 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

Loading…

Flashcards10 cards

What is thigmotropism?1 / 10

Thigmotropism is a plant's growth response to touching a solid object. The name comes from the Greek thigma, meaning 'touch'. A pea plant's tendril curling around a fence wire is a classic example.

Biology

Biology · L3 · Thigmotropism: How Plants Respond to Touch

@openstem

Biology · L3 · Thigmotropism: How Plants Respond to Touch

Flowchart7 objects

Biology

Biology · L2 · How a Hormone Message Travels

@openstem

Biology · L2 · How a Hormone Message Travels

Flowchart9 objects

Biology

Developmental Biology: From Fertilization to Body Plan · flowchart

@openstem

Developmental Biology: From Fertilization to Body Plan · flowchart

Flashcards10 cards

What does diurnal mean?1 / 10

Diurnal means an animal is awake and active during the day, and sleeps at night.

Biology

Biology · L1 · Awake by Day or Awake by Night

@openstem

Biology · L1 · Awake by Day or Awake by Night

Flashcards8 cards

In simple terms, what is the reproductive system's job in the body?1 / 8

Its job is to make reproduction possible — that is, to allow living things to produce offspring, which is how a species continues from one generation to the next.

Biology

Biology · L2 · The Reproductive System's Basic Job

@openstem

Biology · L2 · The Reproductive System's Basic Job

Quiz5 questions

What is the immediate functional consequence of the cortical reaction following fertilization?

AIt restores the diploid chromosome number by fusing the sperm and egg nucleiBIt blocks additional sperm from fertilizing the egg (block to polyspermy)CIt initiates the first mitotic cleavage divisionDIt establishes the anterior-posterior axis of the embryo

Biology

Biology · L4 · Developmental Biology Quiz

@openstem

Biology · L4 · Developmental Biology Quiz

Quiz5 questions

Which structure is known as the heart's natural pacemaker?

AThe AV nodeBThe SA nodeCThe septumDThe mitral valve

Biology

Biology · L3 · The Circulatory System

@openstem

Biology · L3 · The Circulatory System

Collection5 items

01Biology · L2 · Sound and Movement Signals in Animals

02Biology · L2 · Body Language and Visual Signals in Animals

03Biology · L2 · How Animals Communicate Quiz

+2 more

Biology

Biology · L2 · Animal Communication

@openstem

Biology · L2 · Animal Communication

Quiz5 questions

A significantly negative Tajima's D at a genomic locus is most consistent with which evolutionary scenario?

ALong-term balancing selection maintaining multiple alleles at intermediate frequency.BA recent hard selective sweep or population expansion, both of which produce an excess of low-frequency variants relative to neutral expectation.CComplete absence of any mutation at the locus.DA locus under no selective constraint whatsoever, evolving at a perfectly neutral rate.

Biology

Biology · L5 · Population Genomics and Selection

@openstem

Biology · L5 · Population Genomics and Selection

Quiz5 questions

A shoot bends toward a light source coming from one side. Which explanation best accounts for this phototropic response?

AAuxin is redistributed to the shaded side, causing those cells to elongate more than the illuminated sideBChlorophyll on the illuminated side is destroyed by excess light, stopping growth thereCCytokinin accumulates on the illuminated side, causing rapid cell divisionDEthylene diffuses away from the light source, inhibiting elongation on the shaded side

Biology

Biology · L4 · Plant Physiology and Hormones Quiz

@openstem

Biology · L4 · Plant Physiology and Hormones Quiz

Quiz5 questions

Glomerular filtration rate (GFR) is best defined as:

AThe volume of blood flowing through both kidneys per minuteBThe volume of filtrate formed by both kidneys per minuteCThe volume of urine excreted per dayDThe rate of blood flow through the renal artery

Biology

Biology · L4 · Renal Physiology — 5 Q

@openstem

Biology · L4 · Renal Physiology — 5 Q

Flashcards10 cards

How do cyclins and CDKs together control progression through the cell cycle?1 / 10

Cyclin-dependent kinases (CDKs) are constitutively present but catalytically inactive alone. Specific cyclins accumulate and decline at defined points in the cycle, binding and activating their partner CDK. Each cyclin-CDK complex phosphorylates a distinct set of substrates to drive a particular transition (e.g. cyclin D-CDK4/6 and cyclin E-CDK2 drive G1/S; cyclin B-CDK1 drives G2/M), and cyclin degradation by the ubiquitin-proteasome system switches the kinase back off.

Biology

Biology · L4 · Cell Cycle Checkpoints and Apoptosis

@openstem

Biology · L4 · Cell Cycle Checkpoints and Apoptosis

Flashcards10 cards

What is migration?1 / 10

When animals travel to a different place, often to find food or warmth.

Biology

How Animals Respond to the Seasons

@openstem

How Animals Respond to the Seasons

Quiz5 questions

Which part of the plant soaks up water from the soil?

ALeavesBRootsCPetalsDStem

Biology

Biology · L1 · Plants and How They Grow

@openstem

Biology · L1 · Plants and How They Grow

Flowchart13 objects

Biology

Biology · L2 · A Gentle Introduction to Punnett Squares · flowchart

@openstem

Biology · L2 · A Gentle Introduction to Punnett Squares · flowchart

Flashcards10 cards

Describe the general design of a whole-cell biosensor for environmental heavy-metal detection, using the arsenic biosensor as an example.1 / 10

A whole-cell biosensor couples a natural or engineered ligand-responsive transcription factor to a reporter output. The classic arsenic biosensor places a fluorescent or bioluminescent reporter (e.g., gfp, the lux operon) under control of the arsenic-responsive promoter PADS, repressed by ArsR in the absence of arsenite and de-repressed once arsenite binds ArsR and releases it from the operator.

Biology

Biology · L5 · Synthetic Biology Applications

@openstem

Biology · L5 · Synthetic Biology Applications

Note~124 words · 1 min

Photosynthesis: A Plant's Kitchen Plants make their own food through a process called photosynthesis. The word just means 'putting together with light'. A plant takes in three things: water (from the soil through its roots), carbon dioxide

Biology

Biology · L2 · How Plants Make Food

@openstem

Biology · L2 · How Plants Make Food

Flowchart11 objects

Biology

Biology · L2 · Building a Balanced Plate

@openstem

Biology · L2 · Building a Balanced Plate

Collection5 items

01Biology · L1 · Meet the Ant Colony

02Biology · L1 · Every Ant Has a Job

03Biology · L1 · How Ants Work Together Quiz

+2 more

Biology

Biology · L1 · How Ants Work Together

@openstem

Biology · L1 · How Ants Work Together

Flowchart10 objects

Biology

Conservation Biology · flowchart

@openstem

Conservation Biology · flowchart

Note~339 words · 2 min

The Amazing Diversity of Invertebrates Invertebrates make up the vast majority of animal species on Earth, and they come in an astonishing range of shapes and lifestyles. Instead of one simple body plan, invertebrates are organized into man

Biology

Biology · L2 · The Amazing Diversity of Invertebrates

@openstem

Biology · L2 · The Amazing Diversity of Invertebrates

Quiz5 questions

What is an allergen?

AA cell that produces antibodiesBA normally harmless substance that triggers an unnecessary immune responseCA protein the body makes to fight off its own cellsDA chemical released by mast cells

Biology