Free Printable WorksheetScienceGrade 10Science CurriculumBIO.10.104

10.104 Excretion, Osmoregulation, and Internal Balance Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Biology Science worksheet provides structured practice on 10.104 Excretion, Osmoregulation, and Internal Balance. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Excretion, Osmoregulation, and Internal Balance: Students explain how kidneys, nephrons, membranes, water potential, solute gradients, and feedback responses help organisms remove wastes and regulate water balance. Rigor range: standard concept checks through honors/Pre-AP/AP-ready integrated physiology, plant systems, health data, and applied decision-making.. Aligned to FreeK12Practice High School Biology Curriculum Crosswalk (NGSS/NRC Framework; CCSS Literacy and Mathematics; AP Biology enrichment; Texas TEKS Biology; Florida NGSSS/CPALMS Biology; Virginia SOL Biology; California NGSS and New York State Science Learning Standards) BIO.10.104 - Excretion, Osmoregulation, and Internal Balance: Corresponding standards copied from the curriculum for skill 10.104: National: NGSS HS-LS1-2; HS-LS1-3; DCI LS1.A; CCC Stability and Change; CCSS RST.9-10.7; RST.11-12.7; HSN-Q.A.1; AP Biology ENE-2, SYI-3, SP2, SP4. State frameworks: TX TEKS BIO.5C, BIO.12A; FL NGSSS SC.912.L.14.2, SC.912.L.14.36; VA SOL BIO.3b, BIO.3d; CA NGSS/NYSSLS HS-LS1-2, HS-LS1-3..

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Biology

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 10.104 Excretion, Osmoregulation, and Internal Balance skill assessments:

Problem 1Difficulty: Mastery

Which answer best synthesizes excretion, osmoregulation, and feedback in one statement?

AOrganisms keep internal balance by preventing all molecules from crossing membranes.

BExcretion and osmoregulation occur only in kidneys and never in other organisms.

CFeedback means a change continues in the same direction until cells burst.

DOrganisms remove metabolic wastes while adjusting water and solute movement through membranes in response to internal changes.

Solution & Explanation:The skill connects waste removal, water and solute regulation, membrane gradients, and feedback responses. Homeostasis requires coordinated adjustment, not complete isolation from change.

Problem 2Difficulty: Mastery

A scientist studies an aquatic invertebrate whose internal osmolarity stays constant from freshwater to moderately salty water, but survival drops in very salty water. Which interpretation is most accurate?

AThe animal is unaffected by salinity under all conditions.

BThe animal has no need for water balance because it is aquatic.

CThe animal regulates osmolarity within a tolerance range but has limits.

DThe animal becomes a plant at high salinity.

Solution & Explanation:Osmoregulation can maintain internal balance across a range, but extreme conditions can exceed physiological capacity.

Problem 3Difficulty: Mastery

A feedback loop for water balance is disrupted so sensors do not detect increased plasma osmolality. Which outcome is most likely if the person becomes dehydrated?

AADH will rise normally because sensors are unnecessary.

BADH and thirst responses may be too weak to conserve water effectively.

CThe kidneys will automatically stop producing filtrate forever.

DWater will move only from low solute to high solute outside the body.

Solution & Explanation:Sensors are needed to detect deviations and trigger responses. If osmoreceptors fail, the body may not increase ADH or thirst appropriately.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Biology Science students. It aligns with educational standard BIO.10.104 (Corresponding standards copied from the curriculum for skill 10.104: National: NGSS HS-LS1-2; HS-LS1-3; DCI LS1.A; CCC Stability and Change; CCSS RST.9-10.7; RST.11-12.7; HSN-Q.A.1; AP Biology ENE-2, SYI-3, SP2, SP4. State frameworks: TX TEKS BIO.5C, BIO.12A; FL NGSSS SC.912.L.14.2, SC.912.L.14.36; VA SOL BIO.3b, BIO.3d; CA NGSS/NYSSLS HS-LS1-2, HS-LS1-3.).