MTTC 103 SCIENCE EXAM QUESTIONS
AND CORRECT ANSWERS
Aquifers - Answer-an underground water reservoir formed from groundwater that has
infiltrated from the surface by passing through the soil and rock layers
Ecosystem - Answer-Community of all the living organisms in a specific area interacting
with non-living factors
Biome - Answer-Ecosystem type defined by the plants and animals that live there and
local climate
Erosion - Answer-process that breaks down matter
Climate - Answer-atmospheric condition in a certain location near the surface of the
earth
Crust - Answer-outermost layer of the earth
Mantle - Answer-Middle layer of earth
Core - Answer-inside of earth
Troposphere - Answer-layer closest to earth where all weather takes place
Stratosphere - Answer-Absorbs the sun's rays
Mesophere - Answer-coldest layer
Thermosphere - Answer-thin, absorbs the most energetic photons from the sun and
reflects radio waves
Igneous rock - Answer-Formed from the cooling of liquid magma
Metamorphic rock - Answer-high temps and pressure within crust, rock material melts
and changes structure
Sedimentary - Answer-formed by sedimentation, compaction, and then cementation of
many small particles
Invertebrates - Answer-Animals without an internal skeleton
Vertebrates - Answer-Animals with an internal skeleton
, Life processes necessary to survival... - Answer-Nutrition, transport (circulation),
respiration, regulation, reproduction, locomotion
Lipids - Answer-compounds that are insoluble or only partially soluble in water. there
are 3 main types: fats, phospholipids, and steroids
Proteins - Answer-make up muscle fibers, and as enzymes, act as catalysts
Nucleic acids - Answer-nucleic acids facilitate the continuation of the species because
they carry genetic information as DNA and RNA
Photosynthesis - Answer-light energy absorbed breaks down water absorbed into
hydrogen and oxygen to form ATP molecules that store energy.
What is the one thing all cells have in common? - Answer-A membrane, comparable to
a semi-permeable plastic bag
Mitochondria - Answer-take in nutrients, break them down, and create energy for the
cell through cellular respiration
Chloroplasts - Answer-food producers of a plant cell
Passive transport - Answer-it occurs when there is a large concentration difference
between the outside and inside of a cell, and the pressure of the greater concentration
will move molecules across the lipid bilayer into the cell
Active transport - Answer-occurs when a cell uses energy to move molecules across the
cell membrane to maintain a proper balance
Stages of mitosis - Answer-Prophase (duplicating everything), metaphase (DNA lines
up along the center), anaphase (half chromosomes go one way, the other go the other
way), telophase (cell membrane closes in and splits the cell into two pieces), interphase
(cell duplicates nucleic acids in preparation for the next division)
Gymnosperms - Answer-plants with vascular systems and seeds but no flowers
Cycads - Answer-sturdy plants with six, waxy fronds that make them look like ferns or
palms
Conifers - Answer-trees that thrive in northern latitudes and have cones
Angiosperms - Answer-plants that have flowers
Arthropods - Answer-they have an exoskeleton, they molt, they have several legs, they
develop through metamorphosis
AND CORRECT ANSWERS
Aquifers - Answer-an underground water reservoir formed from groundwater that has
infiltrated from the surface by passing through the soil and rock layers
Ecosystem - Answer-Community of all the living organisms in a specific area interacting
with non-living factors
Biome - Answer-Ecosystem type defined by the plants and animals that live there and
local climate
Erosion - Answer-process that breaks down matter
Climate - Answer-atmospheric condition in a certain location near the surface of the
earth
Crust - Answer-outermost layer of the earth
Mantle - Answer-Middle layer of earth
Core - Answer-inside of earth
Troposphere - Answer-layer closest to earth where all weather takes place
Stratosphere - Answer-Absorbs the sun's rays
Mesophere - Answer-coldest layer
Thermosphere - Answer-thin, absorbs the most energetic photons from the sun and
reflects radio waves
Igneous rock - Answer-Formed from the cooling of liquid magma
Metamorphic rock - Answer-high temps and pressure within crust, rock material melts
and changes structure
Sedimentary - Answer-formed by sedimentation, compaction, and then cementation of
many small particles
Invertebrates - Answer-Animals without an internal skeleton
Vertebrates - Answer-Animals with an internal skeleton
, Life processes necessary to survival... - Answer-Nutrition, transport (circulation),
respiration, regulation, reproduction, locomotion
Lipids - Answer-compounds that are insoluble or only partially soluble in water. there
are 3 main types: fats, phospholipids, and steroids
Proteins - Answer-make up muscle fibers, and as enzymes, act as catalysts
Nucleic acids - Answer-nucleic acids facilitate the continuation of the species because
they carry genetic information as DNA and RNA
Photosynthesis - Answer-light energy absorbed breaks down water absorbed into
hydrogen and oxygen to form ATP molecules that store energy.
What is the one thing all cells have in common? - Answer-A membrane, comparable to
a semi-permeable plastic bag
Mitochondria - Answer-take in nutrients, break them down, and create energy for the
cell through cellular respiration
Chloroplasts - Answer-food producers of a plant cell
Passive transport - Answer-it occurs when there is a large concentration difference
between the outside and inside of a cell, and the pressure of the greater concentration
will move molecules across the lipid bilayer into the cell
Active transport - Answer-occurs when a cell uses energy to move molecules across the
cell membrane to maintain a proper balance
Stages of mitosis - Answer-Prophase (duplicating everything), metaphase (DNA lines
up along the center), anaphase (half chromosomes go one way, the other go the other
way), telophase (cell membrane closes in and splits the cell into two pieces), interphase
(cell duplicates nucleic acids in preparation for the next division)
Gymnosperms - Answer-plants with vascular systems and seeds but no flowers
Cycads - Answer-sturdy plants with six, waxy fronds that make them look like ferns or
palms
Conifers - Answer-trees that thrive in northern latitudes and have cones
Angiosperms - Answer-plants that have flowers
Arthropods - Answer-they have an exoskeleton, they molt, they have several legs, they
develop through metamorphosis
