2025 COMPLETE UPDATE FOR BIO 201L Lab 5 Tissues and Skin
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Student Name:
Access Code:
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be
rejected.
Pre-lab Questions
1. What is a tissue?
A tissue is a group of similar cells working together to carry out a specific job in the body.
2. What is the function of epithelial tissue?
Epithelial tissue protects the body by lining surfaces and also helps with absorption,
secretion, and sensing.
3. What is the function of connective tissue?
Connective tissue supports and connects different parts of the body, and helps transport
nutrients and waste.
4. What is the function of muscular tissue?
Muscular tissue lets the body move by contracting and relaxing.
5. What is the function of nervous tissue?
Nervous tissue sends and receives signals to help the body respond and communicate
internally.
6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of
the skin. Sebaceous glands release oils that keep the skin soft, sweat glands help cool
the body, and hair provides protection and sensory input.
7. What is the function of melanin?
Melanin gives color to skin, hair, and eyes and protects against damage from UV rays.
, 8. List the similarities and differences of the layers of the epidermis.
The layers all protect the skin, but differ in thickness and function. The outer layer is dead
and protective, while deeper layers help with new cell growth and keratin production.
EXPERIMENT 1: OBSERVATION OF MITOSIS IN A PLANT CELL
Introduction Questions
1. What is the difference between simple, stratified and pseudostratified epithelial tissue?
Simple has one layer of cells, stratified has many layers for protection, and pseudostratified
looks layered but isn’t, with all cells touching the base.
Straighterline
Student Name:
Access Code:
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be
rejected.
Pre-lab Questions
1. What is a tissue?
A tissue is a group of similar cells working together to carry out a specific job in the body.
2. What is the function of epithelial tissue?
Epithelial tissue protects the body by lining surfaces and also helps with absorption,
secretion, and sensing.
3. What is the function of connective tissue?
Connective tissue supports and connects different parts of the body, and helps transport
nutrients and waste.
4. What is the function of muscular tissue?
Muscular tissue lets the body move by contracting and relaxing.
5. What is the function of nervous tissue?
Nervous tissue sends and receives signals to help the body respond and communicate
internally.
6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of
the skin. Sebaceous glands release oils that keep the skin soft, sweat glands help cool
the body, and hair provides protection and sensory input.
7. What is the function of melanin?
Melanin gives color to skin, hair, and eyes and protects against damage from UV rays.
, 8. List the similarities and differences of the layers of the epidermis.
The layers all protect the skin, but differ in thickness and function. The outer layer is dead
and protective, while deeper layers help with new cell growth and keratin production.
EXPERIMENT 1: OBSERVATION OF MITOSIS IN A PLANT CELL
Introduction Questions
1. What is the difference between simple, stratified and pseudostratified epithelial tissue?
Simple has one layer of cells, stratified has many layers for protection, and pseudostratified
looks layered but isn’t, with all cells touching the base.
