Study by subject
Browse clear college questions and worked explanations by subject, from biology and mathematics to humanities, statistics, management, and academic writing.
Unlock the entire study library
Every answer, knowledge guide and source, plus the assignment, AI detection and humanizer tools.
Explore topics
Expand a subject family to see its study areas. Topic labels are informational in this first release.
Verified content
Start with an evidence-based explanation built from reviewed academic and teaching sources.
Both cell types copy and partition DNA before division, but the introductory bacterial model begins segregation near the replication origin, while eukaryotic mitosis uses condensed sister chromatids, centromeres, kinetochores, and a spindle.
A nucleoid identifies prokaryotes; a nucleolus, lysosomes, and mitochondria are eukaryotic features; and both broad cell types have ribosomes and plasma membranes, with flagellated members present in each group.
A complete sample key for GENKI I Workbook Lesson 3-2 uses を to mark each direct object and pairs ます affirmative verbs with ません negatives across all five noun groups.
The universal labels are organized structure, environmental response, energy processing, reproduction, and population evolution; multicellularity, eating organisms, needing a mate, and individual evolution are not universal.
The carbon-bonding choices are structures 1, 3, and 4; the molecule's four highlighted groups are hydroxyl, sulfhydryl, amino, and phosphate; and six compound-property pairs complete Part C.
Protons are p with +1 charge, neutrons are n with 0 charge, and electrons are e with −1 charge. Protons and neutrons are about 1 amu each, while an electron fits the exercise's roughly 1/2000 amu bin.
The conversion is 4.5 mol/(g·cm²). Convert kilograms to grams and square the meter-to-centimeter factor so every denominator unit cancels correctly.
Use 1000 mL/1 L as the missing factor. Milliliters cancel from the denominator, leaving g/L; the calculated value is -4.1 × 10^7 g/L.
For A = {y | y > 1} and B = {y | y ≤ 6}, the union is all real numbers and the intersection is (1, 6].