Chapter 3 Essays
ESSAY #1
Nucleic Acids p. 47• Sugar + phosphate + nitrogenous base
Essay #2
Was the only person ever to win two unshared Nobel prizes:
for chemistry in 1954 and for peace in 1962
Linus Pauling
• Found how hemoglobin carries oxygen
• high doses of vitamin C are effective against colds and other illnesses.
• Ban on nuclear testing
ESSAY 3a: CONTRAST SWEETS p. 38
• Glucose
bind to taste receptors on tongue
• Sucralosebind more tightly to taste receptors on tongue
3b CONTRAST SWEETS p. 38
• Glucose
As compared to sucrose: slightly sweeter
• Sucralose
• As compared to sucrose: 600 times sweeter
3c CONTRAST SWEETS p. 38
• Glucose
• Natural
• Sucralose
• Artificial• Sucralose mixed with
maltodextrin and dextrose
Aspartame
•150 times more sweet than glucose
10 pointers
• Structural-hair, skin, nailsStorage-eggs, nuts
Signal-hormonesContractile-muscle fibers
Defensive-antibodiesEnzymes-speed up reactions
Transport-hemoglobin carrying oxygen
10 pointer
• Anabolic steroids - artificial variant of the male hormone, testosterone
• Used to build muscle and bone• Negatives:
mood swings (“roid rage”)Depression acnehigh blood pressure women-beardsreduced sex drive Infertilityenlarged breasts liver cancershrunken testicles
Anabolic Steroids Abusers
• Barry Bonds
• Marion Jones
• Mark McGuire
• Jason Giambi
• Mike Tyson
How an orb spider makes its web
• Spokes
• Dry
• Inelastic proteins
• “Spiraling strand”-captures insects
• Wet• Sticky• Highly elastic
(stretch up to 4X’s)
Uses for Synthetic Web
wear-resistant shoes and clothes
-stronger ropes, nets, seatbelts, and parachutes
-rust-free panels and bumpers for automobiles
-improved sutures and bandages, artificial tendons and ligaments, and supports for weakened blood vessels.
-soldiers and police long for bulletproof vests
Tether ropes for astronauts
Sketch how the web is made
Top Related