SPH K 212: Exam 1 Intro to Exercise
Science Questions and Answers.
Survival Needs - Answer -body temp around 37°C
-atmospheric pressure adequate to maintain oxygen in our bodies and gas exchange
-pH of human blood 7.35-7.45
-nutrients
-water
Homeostasis - Answer maintenance of a relatively stable internal environment
-doesn't involve keeping conditions static, just within a tightly regulated physiological tolerance
limit(dynamic state of equilibrium)
3 components of homeostatic mechanisms - Answer receptors, control center, effectors
Receptor - Answer detects change
control center - Answer processes the signal and sends instructions
Effector - Answer response feeds back to reduce change and return back to homeostasis
negative feedback - Answer response to stimulus is to reverse change and bring the body
back to normal ranges(homeostatic control)
ex. regulating glucose
Covalent Bonds - Answer electrons are shared
Ionic Bonds - Answer electrons transferred
2 types of covalent bonds - Answer polar and nonpolar
nonpolar covalent bond - Answer electrons are shared equally
polar covalent bond - Answer electrons are shared unequally
, Electronegativity - Answer A measure of the ability of an atom in a chemical compound to
attract electrons
Importance of water - Answer -transport medium(polar solvent, nutrients, gases, heat)
-high heat capacity(how much energy it takes to change the temperature)
-digestion
-chemical reactions(body can make water or chemically alter it)
Carbohydrates Building Block - Answer Monosaccharides(ex. Glucose)
Carbohydrates - Answer Function:
-major source of cellular fuel(glucose, fructose)
-structural molecule
Polysaccharides - Answer thousands of monosaccharides joined in chains
Starch - Answer type of plant stored energy
Glycogen - Answer type of animal/human stored energy
Cellulose - Answer major part of cell walls; indigestible part of plant
ex. fibers
Lipids - Answer Function:
-major source of cellular fuel(triglycerides)
-structural molecule(phospholipids)
-chemical messengers(steroids, sex hormone)
Lipids Building Block - Answer Fatty Acid
-insoluble in water
Protein - Answer Function:
-major structural component of body tissues
-play vital role in many cell functions(messaging)(enzymes, hormones, antibodies)
Science Questions and Answers.
Survival Needs - Answer -body temp around 37°C
-atmospheric pressure adequate to maintain oxygen in our bodies and gas exchange
-pH of human blood 7.35-7.45
-nutrients
-water
Homeostasis - Answer maintenance of a relatively stable internal environment
-doesn't involve keeping conditions static, just within a tightly regulated physiological tolerance
limit(dynamic state of equilibrium)
3 components of homeostatic mechanisms - Answer receptors, control center, effectors
Receptor - Answer detects change
control center - Answer processes the signal and sends instructions
Effector - Answer response feeds back to reduce change and return back to homeostasis
negative feedback - Answer response to stimulus is to reverse change and bring the body
back to normal ranges(homeostatic control)
ex. regulating glucose
Covalent Bonds - Answer electrons are shared
Ionic Bonds - Answer electrons transferred
2 types of covalent bonds - Answer polar and nonpolar
nonpolar covalent bond - Answer electrons are shared equally
polar covalent bond - Answer electrons are shared unequally
, Electronegativity - Answer A measure of the ability of an atom in a chemical compound to
attract electrons
Importance of water - Answer -transport medium(polar solvent, nutrients, gases, heat)
-high heat capacity(how much energy it takes to change the temperature)
-digestion
-chemical reactions(body can make water or chemically alter it)
Carbohydrates Building Block - Answer Monosaccharides(ex. Glucose)
Carbohydrates - Answer Function:
-major source of cellular fuel(glucose, fructose)
-structural molecule
Polysaccharides - Answer thousands of monosaccharides joined in chains
Starch - Answer type of plant stored energy
Glycogen - Answer type of animal/human stored energy
Cellulose - Answer major part of cell walls; indigestible part of plant
ex. fibers
Lipids - Answer Function:
-major source of cellular fuel(triglycerides)
-structural molecule(phospholipids)
-chemical messengers(steroids, sex hormone)
Lipids Building Block - Answer Fatty Acid
-insoluble in water
Protein - Answer Function:
-major structural component of body tissues
-play vital role in many cell functions(messaging)(enzymes, hormones, antibodies)
