Biology - May 2007

Filter-feeding bivalves can be used to monitor the environmental health of a habitat because:

A) the bivalves reproduce rapidly in polluted water
B) the bivalves concentrates pollutants microorganisms in their tissues
C) the bivalves live near deep-sea vents
D) some bivalves never get cancer

2007-05-27 15:08:38 · 5 answers · asked by thru_irish_eyes105 1

a. mutation
b. gene flow
c. genetic drift
d. natural selection
e. all of the above

62. What is a gene pool?

a. a region of DNA found at a specific position on a chromosome
b. the number of versions of a gene there are
c. the total of all the genes in a population
d. all the individuals in a population

64. Evolution is defined by biologists as _________

a. change in the genetic makeup of a population over time.
b. a change in form of an organism.
c. a change in the genetic makeup of an organism.
d. an organism turning into another type of organism.
e. one species diverging into two species.

2007-05-27 14:02:07 · 6 answers · asked by Anonymous

2007-05-27 12:30:02 · 6 answers · asked by imputh 5

2007-05-27 11:58:45 · 3 answers · asked by dave_matthews.band 1

2007-05-27 11:01:41 · 9 answers · asked by sobusy 2

statement that accurately describes an enzyme
a it causes chemical reactions to occur faster
b its broken down into sugar as it performs its job
c it functions as a stabilizing molecule
d its main job is to keep reluctant molecules separated

2007-05-27 10:38:26 · 11 answers · asked by Anonymous

a. S- shaped curve
b. exponential growth curve
c. logistic growth curve
d. the carrying capacity
e. boom and bust cycles

17. The average age at which women in the U.S. have their first child has increased from about 20 years old to about 27 years old. How does that affect the population growth rate?

a. not at all if they still have the same total number of children
b. slows it down
c. speeds it up

18. Organisms can change the carrying capacity of their own ecosystem.

a. True.
b. False.
c. True but only for humans

20. Your personal "ecological footprint" (the area of earth’s surface needed to support your lifestyle) depends on __________.

a. the size of your house, how well it is insulated, and the climate where you live
b. what transportation you use, how much you travel, and whether you travel alone
c. the types and amounts of foods you eat
d. what you consume and the waste you produce
e.all of the above

2007-05-27 10:23:43 · 4 answers · asked by Anonymous

2007-05-27 08:54:33 · 10 answers · asked by Mitch R 1

a. increase genetic variability both within and between populations
b. decrease genetic variability both within and between populations
c. increase genetic variability within a population but decrease genetic variability between populations
d. decrease genetic variability within a population but increase genetic variability between populations

2007-05-27 08:32:08 · 2 answers · asked by chanelbabe 2

i mean, animals of the same species have the same face, whereas humans look different from each other. why is that? aren't we animals too?

2007-05-27 05:42:07 · 9 answers · asked by Anonymous

2007-05-27 05:00:48 · 8 answers · asked by cityancolour 2

2007-05-27 04:53:22 · 8 answers · asked by Akilesh - Internet Undertaker 7

Or a gorilla, or any kind of primate? What would the child be like?

2007-05-27 04:23:06 · 35 answers · asked by Anonymous

2007-05-27 02:58:58 · 10 answers · asked by yahooanswers 3

2007-05-26 23:31:49 · 4 answers · asked by Anonymous

2007-05-26 23:17:18 · 15 answers · asked by Chill 2

so far i only have 1. long axons and 2. myelin.. is there anything else??

2007-05-26 21:58:41 · 4 answers · asked by Anonymous

Does a human skin cell contain the same genetic information as a human brain cell? Explain your answer.

2007-05-26 18:13:57 · 3 answers · asked by Anonymous

2007-05-26 17:21:26 · 7 answers · asked by westafrocherokee 1

I think the human populations because, more than millions people population's growth.

2007-05-26 16:35:58 · 6 answers · asked by Anonymous

I believe in god, and read the bible every day but I must say that this museum is a "manufactured" falsity because American Bapstist Creationist cannot account fot the emperical evidence that science provides for the time frame of the Universe and the age of the dinosaur fossiles so they must concoct this elabrate "Jurasic Joke" using cheesy Hollywood props and and computerized ad hoc "razzle dazzle" to thrill audiences young and old alike hmmm P.T . Barnum????

2007-05-26 13:50:19 · 14 answers · asked by Anonymous

Then will The Flintstones become required in Biology class?

2007-05-26 12:41:59 · 8 answers · asked by Anonymous

I found octopus with "foam" under the skin. Is it a sign of the octopus going bad?

2007-05-26 11:43:11 · 2 answers · asked by beagle63 1

Are there any legitimate scientific objections to accepting Darwinism 100%? I'm not at all interested in faith based arguments.

2007-05-26 11:30:38 · 14 answers · asked by Adrian C 2

Some athletes take anabolic steroids to improve their performance. Some nonathletes take steroids simply to improve their appearance. Do you think the use of anabolic steroids is justified in either circumstance?

2007-05-26 11:00:35 · 4 answers · asked by John J 1

2007-05-26 10:58:57 · 8 answers · asked by John J 1

Or is it a rule to give names that most people cant pronounce without practice?

2007-05-26 10:45:54 · 9 answers · asked by Borg_MonkeyDrone 3

2007-05-26 10:45:01 · 6 answers · asked by Anonymous

2007-05-26 10:41:57 · 4 answers · asked by Anonymous

a.protista
b.fungi
c.plantea
d.eubacteria

2007-05-26 10:39:55 · 3 answers · asked by fillojeta a 1