PENN FOSTER INTRO TO BIOLOGY
PROCTORED TEST PAPER 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
⩥ cell. Answer: The smallest unit of biological organization that
display's all of the characteristics of life
⩥ Natural selection. Answer: The process by which a population
develops adaptations to its environment and evolves over time
⩥ Four conditions needed for natural selection:. Answer: 1. Population
members exhibit differences that are heritable
2. Members produce more offspring than can be supported by
environmental resources
3. Competition for limited resources
4. Through many generations a greater portion of the population exhibits
adaptations to the environment
⩥ Taxonomy. Answer: The science of classifying organisms into groups
based on how they are related
⩥ Binomial name. Answer: Two part scientific name that consists of
genus and species
,⩥ Three Domains. Answer: Archaea, Bacteria, Eukarya
⩥ Domain Archaea. Answer: Prokaryotic, unicellular organisms that live
in extreme habitats
⩥ Domain Bacteria. Answer: Prokaryotic, unicellular bacteria
⩥ Domain Eukarya. Answer: Four Kingdoms- protists, fungi, plants,
animals
⩥ Kingdom Protista. Answer: Unicellular, multicellular, or colonial
organisms. More complex than prokaryotes
⩥ Kingdom Fungi. Answer: Eukaryotic, multicellular organisms that
break down dead organic debris for sustenance
⩥ Kingdom Plantae. Answer: Multicellular, eukaryotic organisms with
vascular tissues that use photosynthesis to produce energy
⩥ Kingdom Animalia. Answer: Eukaryotic, multicellular organisms that
do not produce their own nutrients
,⩥ Photosynthesis. Answer: Process of using sunlight to synthesize
sugars from raw materials
⩥ Scientific Method. Answer: Used by scientists to guide research and
gain a better understanding of natural phenomena
⩥ Test group. Answer: Group provided with experimental variable in an
experiment
⩥ Control group. Answer: Test group not given experimental variable in
an experiment
⩥ Scientific Theory. Answer: Widely accepted explanation for a natural
phenomenon
⩥ Reproductive cells. Answer: Gamete producing cells
⩥ Somatic cells. Answer: Any cell other than a reproductive cell
⩥ Mitosis. Answer: Process of division for somatic cells
⩥ Meiosis. Answer: Process of division for reproductive cells
, ⩥ Daughter cells. Answer: Genetically identical cells, result of mitosis
⩥ Gametes. Answer: Cells for sexual reproduction, half the number of
chromosomes, result of meiosis
⩥ Cell cycle. Answer: Two stages: interphase and mitosis
⩥ Interphase. Answer: Longest portion of the cell cycle, growth and
DNA duplication
⩥ G1 phase of the cell cycle. Answer: First phase, the cell grows and
builds proteins, carbs and lipids
⩥ S (synthesis) phase of cell cycle. Answer: Second phase of cell cycle,
DNA is replicated to prepare for nuclear division. After DNA
replication, chromatids attach to their copy by a centromere. Results in
two identical sister chromatids.
⩥ G2 phase of cell cycle. Answer: Third phase, growth phase, cell
produces proteins necessary for mitosis and prepares to divide.
⩥ Cytokinesis. Answer: Division of the cytoplasm, occurs at the end of
mitosis during telophase
PROCTORED TEST PAPER 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
⩥ cell. Answer: The smallest unit of biological organization that
display's all of the characteristics of life
⩥ Natural selection. Answer: The process by which a population
develops adaptations to its environment and evolves over time
⩥ Four conditions needed for natural selection:. Answer: 1. Population
members exhibit differences that are heritable
2. Members produce more offspring than can be supported by
environmental resources
3. Competition for limited resources
4. Through many generations a greater portion of the population exhibits
adaptations to the environment
⩥ Taxonomy. Answer: The science of classifying organisms into groups
based on how they are related
⩥ Binomial name. Answer: Two part scientific name that consists of
genus and species
,⩥ Three Domains. Answer: Archaea, Bacteria, Eukarya
⩥ Domain Archaea. Answer: Prokaryotic, unicellular organisms that live
in extreme habitats
⩥ Domain Bacteria. Answer: Prokaryotic, unicellular bacteria
⩥ Domain Eukarya. Answer: Four Kingdoms- protists, fungi, plants,
animals
⩥ Kingdom Protista. Answer: Unicellular, multicellular, or colonial
organisms. More complex than prokaryotes
⩥ Kingdom Fungi. Answer: Eukaryotic, multicellular organisms that
break down dead organic debris for sustenance
⩥ Kingdom Plantae. Answer: Multicellular, eukaryotic organisms with
vascular tissues that use photosynthesis to produce energy
⩥ Kingdom Animalia. Answer: Eukaryotic, multicellular organisms that
do not produce their own nutrients
,⩥ Photosynthesis. Answer: Process of using sunlight to synthesize
sugars from raw materials
⩥ Scientific Method. Answer: Used by scientists to guide research and
gain a better understanding of natural phenomena
⩥ Test group. Answer: Group provided with experimental variable in an
experiment
⩥ Control group. Answer: Test group not given experimental variable in
an experiment
⩥ Scientific Theory. Answer: Widely accepted explanation for a natural
phenomenon
⩥ Reproductive cells. Answer: Gamete producing cells
⩥ Somatic cells. Answer: Any cell other than a reproductive cell
⩥ Mitosis. Answer: Process of division for somatic cells
⩥ Meiosis. Answer: Process of division for reproductive cells
, ⩥ Daughter cells. Answer: Genetically identical cells, result of mitosis
⩥ Gametes. Answer: Cells for sexual reproduction, half the number of
chromosomes, result of meiosis
⩥ Cell cycle. Answer: Two stages: interphase and mitosis
⩥ Interphase. Answer: Longest portion of the cell cycle, growth and
DNA duplication
⩥ G1 phase of the cell cycle. Answer: First phase, the cell grows and
builds proteins, carbs and lipids
⩥ S (synthesis) phase of cell cycle. Answer: Second phase of cell cycle,
DNA is replicated to prepare for nuclear division. After DNA
replication, chromatids attach to their copy by a centromere. Results in
two identical sister chromatids.
⩥ G2 phase of cell cycle. Answer: Third phase, growth phase, cell
produces proteins necessary for mitosis and prepares to divide.
⩥ Cytokinesis. Answer: Division of the cytoplasm, occurs at the end of
mitosis during telophase
