Biology - May 2007

2007-05-29 18:18:40 · 5 answers · asked by matt s 1

I was reading a book and it said that was all we used and I cant for the life of me remember if thats right

2007-05-29 18:16:46 · 10 answers · asked by Anonymous

2007-05-29 17:44:05 · 7 answers · asked by VMars 2

2007-05-29 16:24:24 · 3 answers · asked by hamsare ayandeye omid k 1

2007-05-29 16:16:24 · 3 answers · asked by hamsare ayandeye omid k 1

2007-05-29 15:51:31 · 6 answers · asked by Brian T 1

How many minutes does a doctor have to revive the heart before the brain quits completely?

2007-05-29 15:25:42 · 7 answers · asked by silverfallswitch 1

it was on planet earth i believe but i cant find it anywhere

2007-05-29 14:45:54 · 2 answers · asked by Anonymous

why do people get boogers?

2007-05-29 14:40:56 · 5 answers · asked by Anonymous

does having or not having sex affect one's health?

2007-05-29 14:39:07 · 14 answers · asked by Jay M 1

I really don't get this question. HELP please! x] thxx

Q: Mendel's principles state that each trait is coded for by two allels. And that the alleles segregate when gametes are formed. Show what that means in a diagram.

2007-05-29 14:26:13 · 4 answers · asked by Anonymous

2007-05-29 14:09:54 · 3 answers · asked by BLG 2

2007-05-29 14:06:35 · 1 answers · asked by Anonymous

2007-05-29 13:58:34 · 1 answers · asked by david g 1

A. True
B. False

2007-05-29 13:03:58 · 8 answers · asked by chanelbabe 2

2007-05-29 12:15:52 · 11 answers · asked by sam s 1

2007-05-29 10:39:09 · 6 answers · asked by Katie H 1

2007-05-29 10:30:02 · 3 answers · asked by Anonymous

2007-05-29 09:29:30 · 4 answers · asked by cHariZ_geLO 1

I know we exhale CO2 but what percentage of O2 is in the exhalation? My friend said we cannot exhale 100% CO2. I have no idea.

2007-05-29 09:15:22 · 4 answers · asked by Dee 2

2007-05-29 08:47:37 · 3 answers · asked by Anonymous

Would it be possible to take the genes from one persons egg and the genes from another persons egg and put them into a stem cell and make a baby that had two biological mothers, or do it with two sperm cells?

2007-05-29 08:44:46 · 9 answers · asked by bexdonnelly 2

2007-05-29 08:35:45 · 3 answers · asked by jessica_stay 1

2007-05-29 08:34:09 · 14 answers · asked by hehe =] 2

an exapmle for an immune system would be like an army, because it fights stuff. but i need one for digestive system. any ideas?

2007-05-29 07:20:23 · 3 answers · asked by Kelly 2

2007-05-29 06:49:22 · 8 answers · asked by RP McMurphy 4

Which of the following was part of the ozone depletion problem?

A.
mining waste

B.
chlorofluorocarbons

C.
DDT

2007-05-29 05:38:30 · 9 answers · asked by Anonymous

1. Which substance damaged bird life until it was largely banned in the 1970s?
A.DDT
B.CO2
C.CFCs


2. In what way did the return of local wildlife in Namibia increase the quality of life for humans in the area?
A.The water was cleaner.
B.More trees were planted.
C.Tourism increased, bringing jobs for locals.

2007-05-29 05:37:43 · 6 answers · asked by Anonymous

1: The skin is a waterproof covering that ________.
cushions our internal organs
prevents entry of harmful microorganisms
prevents dehydration
helps regulate our body temperature and maintains homeostasis
all of the above


2: The _________ provides external protection to the body and is the largest organ of the ________ system.
endoskeleton; skeletal
skin; integumentary
subcutaneous tissues; skin
cartilage; skeletal
none of the above


3: Osteoporosis is _________.
the build-up of calcium in the bones of the body
the loss of calcium from the bones of the body
a condition in which the bones become brittle and porous
both B and C
none of the above


4: Skin cells divide and multiply in the __________.
epidermis
osteoclasts
dermis
subcutaneous tissues
all of the above


5: The _________ glands produce oil that lubricates the skin.
sweat
sudoriferous
subcutaneous
sebaceous
none of the above


6: Most skeletal muscles are found in _______ pairs, meaning that as one ________, the other relaxes.
antagonistic; contracts
metacarpal; stretches
flexible; bends
skeletal; pushes
none of the above


7: Cartilage is gradually replaced by bone in a process called __________.
mitosis
ossification
dehydration
homeostasis
none of the above


8: Bone-forming cells called osteoblasts add _________ to the bones, making them harder.
keratin
acetylcholine
air
calcium
none of the above


9: The skull is connected to the spine by a _________ joint, a type of __________ joint.
pivot; synovial
ball-and-socket; synovial
hinge; gliding
gliding; flexible
none of the above


10: The most flexible type of joint of the body is the ___________.
phalanges
pivot joint
carpal joints
ball-and-socket joint
all of the above

2007-05-29 04:30:10 · 4 answers · asked by kitara 1

2007-05-29 04:25:12 · 11 answers · asked by FRANKIE E 1