Biology 1002 Exam 1 Actual Exam Study
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1. Taxonomy - ANSWER the branch of science concerned with classification,
especially of organisms; systematics.
2. Who created/discovered Taxonomy? - ANSWER Carolus Linnaeus
3. What is the order of the taxonomy system? - ANSWER Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
4. What is the key distinguishing feature of Hominins? - ANSWER
Bipedalism.
5. What are the distinguishing characteristics of all mammals? - ANSWER
Mammary glands, hair, and specialized teeth.
6. What are the distinguishing features of land plants? - ANSWER Apical
meristem and alternation of generations.
,7. What do amphibians, reptiles, and mammals have in common? - ANSWER
They are all tetrapods.
8. What is the best classification for Entamoeba histolytica? - ANSWER
Protozoa.
9. What are diploblastic organisms? - ANSWER Organisms with two germ
layers (ectoderm and endoderm).
10.What are triploblastic organisms? - ANSWER Organisms with three germ
layers (ectoderm, mesoderm, and endoderm).
11.What is the function of an operculum in fish? - ANSWER It is a bony flap
that covers and protects the gills.
12.What is the primary role of mycorrhizae? - ANSWER A symbiotic
association between fungi and plant roots that aids in nutrient absorption.
13.What is the definition of an extremophile? - ANSWER An organism that
thrives in physically or geochemically extreme conditions that are
detrimental to most life on Earth.
14.What is the function of the glycocalyx in bacteria? - ANSWER It provides
protection against dehydration and helps the bacteria adhere to surfaces.
15.What is the significance of ether bonds in the phospholipid membrane of
Archaea? - ANSWER They provide increased chemical stability, allowing
the organisms to survive in extreme environments like thermal vents.
,16.What is the definition of a chemoautotroph? - ANSWER An organism that
derives energy from the oxidation of inorganic compounds and uses carbon
dioxide as its carbon source.
17.What hypotheses explain the sharp decline in sponges and rise of bilaterians
during the Cambrian explosion? - ANSWER Predator/prey adaptations and
relationships, a decrease in atmospheric oxygen, and the origin of hox genes.
18.In the alternation of generations, what is the multicellular plant denoted by
the star? - ANSWER A diploid sporophyte.
19.What would you likely encounter if you traveled back to the time when life
first appeared on Earth? - ANSWER You would not be able to breathe
because the atmosphere contained very little oxygen.
20.What plant-fungal symbiosis played a key role in plants colonizing land? -
ANSWER Mycorrhizae.
21.In the alternation of generations, what process occurs at the stage labeled D?
- ANSWER Meiosis.
22.What happens when a human is bitten by a mosquito infected with
Plasmodium falciparum? - ANSWER Sporozoites enter through the
mosquito's saliva and eventually enter the liver.
23.How are fungi nutritionally classified? - ANSWER They are heterotrophs
that cannot produce their own food.
, 24.What is the most diverse group of organisms within the Eukarya domain? -
ANSWER Protists.
25.What is the likely effect of a mutation that prevents a plant's cuticle from
forming? - ANSWER The plant will experience increased water loss and
may become desiccated.
26.What structures are used for locomotion in comb jellies? - ANSWER Cilia.
27.How would a mutation that immobilizes the flagellum of a sponge's
choanocytes affect the sponge? - ANSWER The sponge would be
ineffective as a filter feeder.
28.What is a critical innovation in amniotes that displaces more gas compared
to buccal pumping? - ANSWER Thoracic breathing.
29.What is the larger, longer-living form of a plant that produces gametes? -
ANSWER The sporophyte.
30.What gene allows individuals of Northern European descent to digest dairy
products? - ANSWER Lactase.
31.Why do grasshoppers require spiracles for gas diffusion? - ANSWER
Because they have an impermeable exoskeleton.
32.What metabolic strategy do methanogens employ? - ANSWER
Chemoautotroph.
Questions with Verified Answers | Brand
New Version
1. Taxonomy - ANSWER the branch of science concerned with classification,
especially of organisms; systematics.
2. Who created/discovered Taxonomy? - ANSWER Carolus Linnaeus
3. What is the order of the taxonomy system? - ANSWER Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
4. What is the key distinguishing feature of Hominins? - ANSWER
Bipedalism.
5. What are the distinguishing characteristics of all mammals? - ANSWER
Mammary glands, hair, and specialized teeth.
6. What are the distinguishing features of land plants? - ANSWER Apical
meristem and alternation of generations.
,7. What do amphibians, reptiles, and mammals have in common? - ANSWER
They are all tetrapods.
8. What is the best classification for Entamoeba histolytica? - ANSWER
Protozoa.
9. What are diploblastic organisms? - ANSWER Organisms with two germ
layers (ectoderm and endoderm).
10.What are triploblastic organisms? - ANSWER Organisms with three germ
layers (ectoderm, mesoderm, and endoderm).
11.What is the function of an operculum in fish? - ANSWER It is a bony flap
that covers and protects the gills.
12.What is the primary role of mycorrhizae? - ANSWER A symbiotic
association between fungi and plant roots that aids in nutrient absorption.
13.What is the definition of an extremophile? - ANSWER An organism that
thrives in physically or geochemically extreme conditions that are
detrimental to most life on Earth.
14.What is the function of the glycocalyx in bacteria? - ANSWER It provides
protection against dehydration and helps the bacteria adhere to surfaces.
15.What is the significance of ether bonds in the phospholipid membrane of
Archaea? - ANSWER They provide increased chemical stability, allowing
the organisms to survive in extreme environments like thermal vents.
,16.What is the definition of a chemoautotroph? - ANSWER An organism that
derives energy from the oxidation of inorganic compounds and uses carbon
dioxide as its carbon source.
17.What hypotheses explain the sharp decline in sponges and rise of bilaterians
during the Cambrian explosion? - ANSWER Predator/prey adaptations and
relationships, a decrease in atmospheric oxygen, and the origin of hox genes.
18.In the alternation of generations, what is the multicellular plant denoted by
the star? - ANSWER A diploid sporophyte.
19.What would you likely encounter if you traveled back to the time when life
first appeared on Earth? - ANSWER You would not be able to breathe
because the atmosphere contained very little oxygen.
20.What plant-fungal symbiosis played a key role in plants colonizing land? -
ANSWER Mycorrhizae.
21.In the alternation of generations, what process occurs at the stage labeled D?
- ANSWER Meiosis.
22.What happens when a human is bitten by a mosquito infected with
Plasmodium falciparum? - ANSWER Sporozoites enter through the
mosquito's saliva and eventually enter the liver.
23.How are fungi nutritionally classified? - ANSWER They are heterotrophs
that cannot produce their own food.
, 24.What is the most diverse group of organisms within the Eukarya domain? -
ANSWER Protists.
25.What is the likely effect of a mutation that prevents a plant's cuticle from
forming? - ANSWER The plant will experience increased water loss and
may become desiccated.
26.What structures are used for locomotion in comb jellies? - ANSWER Cilia.
27.How would a mutation that immobilizes the flagellum of a sponge's
choanocytes affect the sponge? - ANSWER The sponge would be
ineffective as a filter feeder.
28.What is a critical innovation in amniotes that displaces more gas compared
to buccal pumping? - ANSWER Thoracic breathing.
29.What is the larger, longer-living form of a plant that produces gametes? -
ANSWER The sporophyte.
30.What gene allows individuals of Northern European descent to digest dairy
products? - ANSWER Lactase.
31.Why do grasshoppers require spiracles for gas diffusion? - ANSWER
Because they have an impermeable exoskeleton.
32.What metabolic strategy do methanogens employ? - ANSWER
Chemoautotroph.
