What is homeostasis and why is it important for the human body?

Homeostasis is the maintenance of a stable internal environment despite external changes. It is important because it allows cells and organs to function properly, keeps conditions like temperature, pH, and blood sugar within normal ranges.

What is the function of carbohydrates, what are the three types, and give examples of each.

Function: Provide energy and store it for later use. Types and Examples: Monosaccharides – (e.g., glucose, fructose) Disaccharides – (e.g., sucrose, lactose) Polysaccharides – (e.g., starch, glycogen, cellulose)

What happens during the growth phase of the cell life cycle?

The cell grows, produces proteins, and carries out normal functions in preparation for DNA replication.

What are the characteristics, functions, and specializations of epithelial tissue?

Characteristics: Packed cells, polarity, avascular, regenerates. Functions: Protect, absorb, secrete, sense. Specializations: Microvilli, cilia, keratin.

What is the function of bone marrow?

Produces blood cells (red, white, and platelets) and stores fat.

What are the five homeostatic functions of bones?

Support: Provides structure for the body. Protection: Shields vital organs. Movement: Works with muscles to allow motion. Mineral storage: Stores calcium and phosphorus. Blood cell production: Bone marrow makes blood cells.

What are the three generalized functions of skeletal muscle tissue?

Movement: Moves bones and body parts. Posture & support: Maintains body position and stabilizes joints. Heat production: Generates heat during contraction to maintain body temperature.

What are three characteristics of skeletal muscle cells that enable their function?

Excitability: Can respond to stimulation. Contractility: Can shorten to produce movement. Extensibility & elasticity: Can stretch and return to original length.

How do DNA and RNA differ in structure? Give examples.

DNA: Double-stranded, deoxyribose sugar, bases A-T & C-G (example: human genome). RNA: Single-stranded, ribose sugar, bases A-U & C-G (examples: mRNA, tRNA, rRNA).

How do injuries affect body tissues?

Injuries can damage cells, causing inflammation, repair, or scar formation; tissues may lose function until healed.

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Deanne Bonifacio

StudyStack 1: Weeks 1-6

Question	Answer
What is homeostasis and why is it important for the human body?	Homeostasis is the maintenance of a stable internal environment despite external changes. It is important because it allows cells and organs to function properly, keeps conditions like temperature, pH, and blood sugar within normal ranges.
What is the function of carbohydrates, what are the three types, and give examples of each.	Function: Provide energy and store it for later use. Types and Examples: Monosaccharides – (e.g., glucose, fructose) Disaccharides – (e.g., sucrose, lactose) Polysaccharides – (e.g., starch, glycogen, cellulose)
What happens during the growth phase of the cell life cycle?	The cell grows, produces proteins, and carries out normal functions in preparation for DNA replication.
What are the characteristics, functions, and specializations of epithelial tissue?	Characteristics: Packed cells, polarity, avascular, regenerates. Functions: Protect, absorb, secrete, sense. Specializations: Microvilli, cilia, keratin.
What is the function of bone marrow?	Produces blood cells (red, white, and platelets) and stores fat.
What are the five homeostatic functions of bones?	Support: Provides structure for the body. Protection: Shields vital organs. Movement: Works with muscles to allow motion. Mineral storage: Stores calcium and phosphorus. Blood cell production: Bone marrow makes blood cells.
What are the three generalized functions of skeletal muscle tissue?	Movement: Moves bones and body parts. Posture & support: Maintains body position and stabilizes joints. Heat production: Generates heat during contraction to maintain body temperature.
What are three characteristics of skeletal muscle cells that enable their function?	Excitability: Can respond to stimulation. Contractility: Can shorten to produce movement. Extensibility & elasticity: Can stretch and return to original length.
How do DNA and RNA differ in structure? Give examples.	DNA: Double-stranded, deoxyribose sugar, bases A-T & C-G (example: human genome). RNA: Single-stranded, ribose sugar, bases A-U & C-G (examples: mRNA, tRNA, rRNA).
How do injuries affect body tissues?	Injuries can damage cells, causing inflammation, repair, or scar formation; tissues may lose function until healed.

Created by: deanne bonifacio

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