BIO 172 UH Manoa Exam 2 COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS (DETAILED &
ELABORATED) ACTUAL EXAM 2025 TEST 100%
SOLVED 2025!!
Animals - (ANSWER)Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - (ANSWER)Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin - (ANSWER)Dense irregular arrangement of collagen
Ligament - (ANSWER)Collagen arranged in sheets
(Connects Bones)
Tendon - (ANSWER)Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote - (ANSWER)Fertilized egg
(Sperm+Egg=Zygote)
,Undergoes rapid cell division called cleavage
Germ Layers - (ANSWER)Give rise to tissues and organs of animal embryo
Blastula - (ANSWER)Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has layers of embryonic
tissues)
Ectoderm - (ANSWER)Germ layer covering embryo surface
Endoderm - (ANSWER)Innermost germ layer and lines developing digestive tube
(aka=Archenteron)
Diploblastic - (ANSWER)Animals that exhibit both ectoderm and endoderm in the
embryo
(Corals, jellyfish)
Triploblastic - (ANSWER)Animals that have intervening Mesoderm layer
(bilaterians)
Bilaterians - (ANSWER)All Multicellular animals other than sponges and
cnidarians
Exhibit bilateral symmetry and cephalization
, Cephalization - (ANSWER)Organization of senses and locomotion toward head
region
Larva - (ANSWER)Sexually immature and anatomically distinct from the adult,
undergoes metamorphosis
Juvenile - (ANSWER)Resembles an adult, but not sexually mature
Cambrian explosion - (ANSWER)535-525 million years ago, marks earliest fossil
appearance of many animal major groups
Hox Genes - (ANSWER)Control the development of body form (Hox Gene "__"
can tell to form an arm)
Protosome - (ANSWER)Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome - (ANSWER)Cell proliferation by radial cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
QUESTIONS AND VERIFIED ANSWERS (DETAILED &
ELABORATED) ACTUAL EXAM 2025 TEST 100%
SOLVED 2025!!
Animals - (ANSWER)Multicellular eukaryotes
Heterotrophs: Ingest their food
Lack Cell Walls
Body held together by structural proteins
Collagen - (ANSWER)Make up connective tissues (fibers)
Flexible and high tensile (stretching)
Skin - (ANSWER)Dense irregular arrangement of collagen
Ligament - (ANSWER)Collagen arranged in sheets
(Connects Bones)
Tendon - (ANSWER)Cable-like arrangement of collagen
(Connects muscle to bone)
Zygote - (ANSWER)Fertilized egg
(Sperm+Egg=Zygote)
,Undergoes rapid cell division called cleavage
Germ Layers - (ANSWER)Give rise to tissues and organs of animal embryo
Blastula - (ANSWER)Cell that has undergone many cell cleavages
Hollow blastula undergoes gastrulation, forming gastrula (has layers of embryonic
tissues)
Ectoderm - (ANSWER)Germ layer covering embryo surface
Endoderm - (ANSWER)Innermost germ layer and lines developing digestive tube
(aka=Archenteron)
Diploblastic - (ANSWER)Animals that exhibit both ectoderm and endoderm in the
embryo
(Corals, jellyfish)
Triploblastic - (ANSWER)Animals that have intervening Mesoderm layer
(bilaterians)
Bilaterians - (ANSWER)All Multicellular animals other than sponges and
cnidarians
Exhibit bilateral symmetry and cephalization
, Cephalization - (ANSWER)Organization of senses and locomotion toward head
region
Larva - (ANSWER)Sexually immature and anatomically distinct from the adult,
undergoes metamorphosis
Juvenile - (ANSWER)Resembles an adult, but not sexually mature
Cambrian explosion - (ANSWER)535-525 million years ago, marks earliest fossil
appearance of many animal major groups
Hox Genes - (ANSWER)Control the development of body form (Hox Gene "__"
can tell to form an arm)
Protosome - (ANSWER)Cell proliferation by spiral cleavage
Coelom forms within the middle tissue germ layer
Initial opening of gut becomes the mouth
Deuterostome - (ANSWER)Cell proliferation by radial cleavage
Coelom forms from outpocket of the middle tissue germ layer
Initial opening of gut becomes the anus
