Biology 242 Final Exam

BIOLOGY 242 FINAL EXAM(-:




once53leaving53the53testes,53sperm53are53stored53in53and53mature53in53the53________.53
-53answer--epididymis

which53of53the53following53is53a53characteristic53of53an53K-selected53species?
a.)53short53lived53
b.)53few53young53produced
c.)53high53rates53of53reproduction53(high53r)
d.)53small53body53size
e.)53no53parental53care53of53young53-53answer--few53young53produced

in53a53population,53as53N53approaches53K,53which53of53the53following53is53predicted53by5
3the53logistic53equation?
a.)53r53will53increase
b.)53the53change53in53numbers53added53per53unit53time53will53approach53zero
c.)53the53population53will53decrease53exponentially
d.)53the53carrying53capacity53will53increase
e.)53the53carrying53capacity53will53decrease53-53answer--
the53change53in53numbers53added53per53unit53time53will53approach53zero

which53of53the53following53types53of53biomolecules,53if53any,53is53not53used53as53a53horm
one?
a.)53carbohydrates53
b.)53steroids
c.)53polypeptides
d.)53modified53amino53acids
e.)53examples53of53all53of53the53previous53choices53are53used53as53human/
animal53hormones53-53answer--carbohydrates

in53general,53most53steroid53hormones53produce53their53effects53by53-53answer--
moving53to53the53nucleus

sweat53glands53secrete53into53small53ducts53that53lead53to53the53surface53of53the53skin.53
this53means53that53the53sweat53glands53are53-53answer--exocrine53glands

, a53population53that53is53growing53exponentially53can53be53illustrated53accurately53by53a53
___53shaped53curve.53-53answer--J

consider53the53following53food53chain:53grass>mouse>snake>hawk.53how53much53energ
y53stored53in53the53herbivore53would53be53passed53to53the53hawk?53-53answer--1%

in53vertebrates,53skeletal53muscles53are53attached53to53bones53by53straps53of53dense53c
onnective53tissues53called:53-53answer--tendons

certain53protozoans53live53in53termite53guts.53the53protozoans53benefit53from53the53assoc
iation53by53having53a53place53to53live,53the53termites53benefit53by53receiving53food53from5
3the53activities53of53the53protozoans.53this53is53an53example53of:53-53answer--mutualism


testosterone53is53produced53by53the:53-53answer--interstitial53cells53of53the53testis

immediately53after53ovulation,53the53remains53of53the53ruptured53follicle53becomes53the:5
3-53answer--corpus53luteum


during53the53menstrual53cycle53of53a53nonpregnant53female,53what53is53the53main53sourc
e53of53progesterone?53-53answer--corpus53luteum

the53sum53total53of53all53the53energetic53interactions53and53nutrient53cycling53that53links5
3organisms53with53one53another53and53with53their53physical53environment53is53called53-
53answer--an53ecosystem


the53_________53produces53the53hormone53melatonin53-53answer--pineal53gland

a53specific53dye,53injected53into53the53bloodstream53,53only53stains53endocrine53cells53th
at53secrete53glucagon.53these53cells53are53found53in53the53_______.53-53answer--
pancreas

which53of53the53following53is53secreted53by53the53posterior53pituitary?
a.)thyroxine
b.)cholecystokinin53(CCK)
c.)53adrenocorticotrophic53hormone53(ACTH)
d.)53growth53hormone53(GH)
e.)53antiduretic53hormone53(ADH)53-53answer--antiduretic53hormone

where53does53the53acetylcholine53carry53out53its53function53in53a53nerve53cell?53-
53answer--at53the53synapse


the53_______53is53a53reflex53center53for53integrating53sensory53information53needed53for
53coordination53of53skeletal53muscles53involved53in53balance,53muscle53tone,53and53accu
rate53movements53of53the53body.53-53answer--cerebellum