BIO 121 LAB 1 PRACTICE SET 2026 LAB
SKILLS AND TECHNIQUES QUESTIONS
HIGH YIELD A+
◉ Transmitted light.
Answer: light provided from below the specimen
◉ Limit of magnification on a dissecting microscope.
Answer: 50x
◉ Difference between dissecting microscope and a compound
microscope.
Answer: Compound microscope uses transmitted light, has greater
resolution and magnification properties, but has essentially a 2D
image
Dissecting microscope uses reflected light from an external light
source, has 2 ocular lens with 2 or more objective lens, has limit of
magnification of 50x, but provides greater depth of field with 3D
images
◉ Protozoans.
Answer: all life activities are carried out within a single membrane
, requires moisture to survive
may be symbiotic or parasitic
◉ Specialization of protozoans occurs via ?.
Answer: specialization of the organelles
◉ Autotrophs.
Answer: synthesize their own food (phytoplankton)
most often classified into Phylum Euglenozoa
◉ Heterotrophs.
Answer: ingest their own food (zooplankton)
most often classified into Phylum Ciliophora
◉ Phylum Euglenozoa.
Answer: all members possess 1 or more flagella for locomotion
often green in color due to chloroplasts that contain chlorophyll;
however, may be red, brown, or yellow in color
Ex: Euglena
◉ Phylum Ciliophora.
Answer: possess cilia for locomotion
SKILLS AND TECHNIQUES QUESTIONS
HIGH YIELD A+
◉ Transmitted light.
Answer: light provided from below the specimen
◉ Limit of magnification on a dissecting microscope.
Answer: 50x
◉ Difference between dissecting microscope and a compound
microscope.
Answer: Compound microscope uses transmitted light, has greater
resolution and magnification properties, but has essentially a 2D
image
Dissecting microscope uses reflected light from an external light
source, has 2 ocular lens with 2 or more objective lens, has limit of
magnification of 50x, but provides greater depth of field with 3D
images
◉ Protozoans.
Answer: all life activities are carried out within a single membrane
, requires moisture to survive
may be symbiotic or parasitic
◉ Specialization of protozoans occurs via ?.
Answer: specialization of the organelles
◉ Autotrophs.
Answer: synthesize their own food (phytoplankton)
most often classified into Phylum Euglenozoa
◉ Heterotrophs.
Answer: ingest their own food (zooplankton)
most often classified into Phylum Ciliophora
◉ Phylum Euglenozoa.
Answer: all members possess 1 or more flagella for locomotion
often green in color due to chloroplasts that contain chlorophyll;
however, may be red, brown, or yellow in color
Ex: Euglena
◉ Phylum Ciliophora.
Answer: possess cilia for locomotion
