BIOL 1410 Lab Exam Questions and
Answers | Latest Update | 2024/2025 |
100% Verified
What is the role of epithelial tissue in the human body?
✔✔ Epithelial tissue covers body surfaces, lines internal cavities, and forms glands, functioning
in protection, secretion, absorption, and filtration.
How do you properly prepare a slide for observing plant cells under a microscope?
✔✔ To prepare a plant cell slide, obtain a thin sample, place it on the slide, add a drop of water
or staining solution, and cover with a coverslip before observation.
What distinguishes skeletal muscle tissue from smooth muscle tissue microscopically?
✔✔ Skeletal muscle tissue has striations and multiple nuclei per cell, while smooth muscle tissue
lacks striations and has a single nucleus per cell.
How does osmosis occur in cells placed in hypotonic and hypertonic solutions?
✔✔ In a hypotonic solution, water enters the cell, causing it to swell, while in a hypertonic
solution, water leaves the cell, causing it to shrink.
1
,What staining technique is commonly used to differentiate bacterial cell walls?
✔✔ The Gram stain technique is used to differentiate between Gram-positive (purple) and
Gram-negative (pink) bacterial cell walls.
What is the function of the Golgi apparatus in eukaryotic cells?
✔✔ The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or
delivery to other parts of the cell.
Describe the process of mitosis in a typical animal cell.
✔✔ Mitosis is the process of cell division that results in two genetically identical daughter cells,
and it includes prophase, metaphase, anaphase, and telophase.
How can you distinguish between plant and animal cells under a microscope?
✔✔ Plant cells have a rigid cell wall, large central vacuole, and chloroplasts, whereas animal
cells lack these structures but have centrioles and more prominent lysosomes.
What is the purpose of a Benedict’s test in a lab experiment?
2
, ✔✔ The Benedict’s test is used to detect the presence of reducing sugars; a positive result causes
the solution to turn from blue to orange or red.
What structure is responsible for the production of ribosomal RNA (rRNA) in the cell?
✔✔ The nucleolus, located within the nucleus, is responsible for the production and assembly of
ribosomal RNA.
How do you calculate the total magnification of a microscope when using a specific objective
lens?
✔✔ Multiply the magnification of the objective lens by the magnification of the ocular lens
(usually 10x). For example, a 40x objective with a 10x ocular lens gives a total magnification of
400x.
What are the main components of connective tissue, and what is their function?
✔✔ Connective tissue is composed of cells, fibers (collagen, elastic, reticular), and ground
substance; it provides support, protection, and insulation to the body.
Describe the structural differences between arteries and veins as observed in histology slides.
3
Answers | Latest Update | 2024/2025 |
100% Verified
What is the role of epithelial tissue in the human body?
✔✔ Epithelial tissue covers body surfaces, lines internal cavities, and forms glands, functioning
in protection, secretion, absorption, and filtration.
How do you properly prepare a slide for observing plant cells under a microscope?
✔✔ To prepare a plant cell slide, obtain a thin sample, place it on the slide, add a drop of water
or staining solution, and cover with a coverslip before observation.
What distinguishes skeletal muscle tissue from smooth muscle tissue microscopically?
✔✔ Skeletal muscle tissue has striations and multiple nuclei per cell, while smooth muscle tissue
lacks striations and has a single nucleus per cell.
How does osmosis occur in cells placed in hypotonic and hypertonic solutions?
✔✔ In a hypotonic solution, water enters the cell, causing it to swell, while in a hypertonic
solution, water leaves the cell, causing it to shrink.
1
,What staining technique is commonly used to differentiate bacterial cell walls?
✔✔ The Gram stain technique is used to differentiate between Gram-positive (purple) and
Gram-negative (pink) bacterial cell walls.
What is the function of the Golgi apparatus in eukaryotic cells?
✔✔ The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or
delivery to other parts of the cell.
Describe the process of mitosis in a typical animal cell.
✔✔ Mitosis is the process of cell division that results in two genetically identical daughter cells,
and it includes prophase, metaphase, anaphase, and telophase.
How can you distinguish between plant and animal cells under a microscope?
✔✔ Plant cells have a rigid cell wall, large central vacuole, and chloroplasts, whereas animal
cells lack these structures but have centrioles and more prominent lysosomes.
What is the purpose of a Benedict’s test in a lab experiment?
2
, ✔✔ The Benedict’s test is used to detect the presence of reducing sugars; a positive result causes
the solution to turn from blue to orange or red.
What structure is responsible for the production of ribosomal RNA (rRNA) in the cell?
✔✔ The nucleolus, located within the nucleus, is responsible for the production and assembly of
ribosomal RNA.
How do you calculate the total magnification of a microscope when using a specific objective
lens?
✔✔ Multiply the magnification of the objective lens by the magnification of the ocular lens
(usually 10x). For example, a 40x objective with a 10x ocular lens gives a total magnification of
400x.
What are the main components of connective tissue, and what is their function?
✔✔ Connective tissue is composed of cells, fibers (collagen, elastic, reticular), and ground
substance; it provides support, protection, and insulation to the body.
Describe the structural differences between arteries and veins as observed in histology slides.
3
