Biology - April 2007

2007-04-26 16:11:41 · 4 answers · asked by Anonymous

How many human beings have o+ blood cell in earth?
Among a, b, ab, o, o+ and o- blood cell, please grade them from the least to most human beings born with this blood?

2007-04-26 16:09:53 · 5 answers · asked by ko 1

Which of the following are true facts about climate change? (There may be more than one correct answer.)

A. It is caused by the release and subsequent trapping of greenhouse gases in the atmosphere.
B. Scientists think that the size of the temperature change will not be very significant and will likely have a small impact on the environment.
C. Some of the probable impacts of climate change include severe weather (such as hurricanes), rising sea levels, loss of biodiversity, and increased disease.
D. It is likely to cause skin cancer, because more ultraviolet radiation will be able to reach the Earth's surface.
E. The burning of fossil fuels is a major source of the gases that cause climate change.

2007-04-26 16:06:25 · 3 answers · asked by Rattiesrule 2

What is the name of the process by which toxic pollutants accumulate as they move up the food chain?

2007-04-26 15:50:12 · 2 answers · asked by Rattiesrule 2

What are bacteria cell walls made out of?

2007-04-26 15:49:47 · 1 answers · asked by Anonymous

2007-04-26 15:20:21 · 2 answers · asked by maya 5

2007-04-26 15:13:14 · 2 answers · asked by jbiz 1

1. How do Punnett squares explain the probability that a particular allele will be in a gamete?

2. What is the difference between nitrogen base, gene, and chromosome?

3. Why is there so much biodiversity on this planet?

4. Why are the conditions for Hardy-Weinberg not likely to appear in nature?

2007-04-26 14:59:42 · 4 answers · asked by M 2

If a right-handed female and a left-handed male produce three male offspring, what are the chances that two of the offspring will be left-handed, and that the oldest will have an exceptional ability to find four-leaf clovers?

2007-04-26 14:56:59 · 3 answers · asked by Anonymous

additionally, what would happen if that was pre-treated with cyanide (prevents production of ATP)?

2007-04-26 14:37:49 · 1 answers · asked by zetayourdaddy6969 1

2007-04-26 14:16:38 · 3 answers · asked by Mario A 1

Im writing a thesis parper on how the world came to be. Being a christian, i am writing on creationism. Can anyone help me prove this using evidence besides the bible, or using other evidence alongside the bible? Also, i heard that carbon dating is only effective up to 8000 years. Is this Correct?

2007-04-26 14:15:11 · 16 answers · asked by <3life's_great<3 2

2007-04-26 14:05:15 · 2 answers · asked by cloud 1

This question is from the Chicken Wing Dissection Lab

Thnxx to everyone who helps =]

2007-04-26 14:03:10 · 2 answers · asked by Anonymous

pls help...
for our biology

2007-04-26 13:55:00 · 1 answers · asked by Mark Anthon E 1

Thank You for your answers in advance..

isranirockstar

2007-04-26 13:52:51 · 1 answers · asked by isranirockstar 2

A. The order of nucleotide sets in genes are reversed.
B. Information from one of two homologous chromosomes breaks and binds to the other.
C. Certain nucleotides are deleted.
D. A certain nucleotide is replaced with another nucleotide.
E. none of the above
Thank you very much.

2007-04-26 13:20:59 · 6 answers · asked by cloud 1

a. laeves with branching veins
b. flower parts in multiples of four or five
c. leaves with parallel veins
d. two cotyledons

2007-04-26 12:40:46 · 5 answers · asked by ineedhelpinbio123 1

1. What vitamin is needed for normal blood clotting?
2. Name the largest game preserve in the world.
3. The heart pumps, on average how many gallons of blood each day?
4. List the classification groups from largest to smallest.
5. The protective outer covering of a seed is called.
6. What country is the person who developed the system for naming species of organisms from?
7. Dr. Percy Julian became the first person to synthesize the drug physostigmine from soybeans. This drug is used in the treatment of what disease?
8. What American biologist pioneered research into how physical characteristics are passed from one generation to the next?
9. What ichthyologist, who combined her love of diving with study of marine fishes, to produce the highest Nielson rating on PBS called "The Sharks."
10. The writer of "Silent Spring" increased the public's awareness of the world's ecology and dangers of toxins in the food chain

2007-04-26 12:00:03 · 11 answers · asked by Janki 1

1. which of the following is NOT a nonvascular plant
a. moss
b. hornwort
c. liverwort
d. fern

2. which of the following is NOT true of biennial plants?
a. they take two years to complete their life cycle
b. most biennial plants are weeds
c. energy is stored in roots and shoots during the winter
d. flowering usually occurs only during the second growing season

3. if a plants flowers are very colorful ans produce nectar, the plant is probably pollinated by
a. water
b. wind
c. insects
d. self-pollination

4. the cotyledons in a seed
a. protect the embryo
b. provide a source of food for the embryo
c. develop from the seed coat
d. are part of the gametophyte

2007-04-26 11:48:20 · 2 answers · asked by ineedhelpinbio123 1

i need to know what rectum is bc i need to have a 1000 word report do by 2moro and i only got 607 and im puzzled bc idk what rectum is it is a sciance report

2007-04-26 11:27:33 · 4 answers · asked by Richard G 1

1. the challenges that faced early land plants included
a. conserving water
b. reproducing on land
c. absorbing minerals from the rocky surface
d. all of the above

2. some land plants developed an internal system of interconnected tubes and vessels called
a. cuticles
b. nonvascular canals
c. the circulatory system
d. vascular tissues

3. photosynthesis enables plants to produce most of the organic molecules that they need. this process requires the use of all of the following EXCEPT

4. removing a flowers stigma would initially affect
a. fertilization
b. seed production
c. pollination
d. seed dispersal

5. the conducting cells of phloem are called
a. tracheids
b. sieve tube cells
c. sieve plates
d. vessel cells

6. the cuticle
a. helps reduce the evaporation of fluids from a plant
b. is a plant adaptation to aquatic environment
c. in a reproductive structure in some plants
d. is crucial to plant cell nourishment

2007-04-26 11:23:07 · 3 answers · asked by ineedhelpinbio123 1

2007-04-26 11:21:53 · 7 answers · asked by Anonymous

2007-04-26 11:06:24 · 8 answers · asked by You Know Who 1

I need the answer plz help

2007-04-26 10:58:24 · 4 answers · asked by angelaaliyahlove 1

1. during fertilization in flowering plants, one sperm fuses with an egg to form an embryo, and another fuses with two nuclei to form nutritive tissue. this event is called
a. self-pollination
b. adaptation
c. maximization
d. double fertilization

2. unlike mosses, ferns possess
a. spore capsules
b. archegonia
c. antheridia
d. vascular tissue

3. which of the following hormones normally exists in a gaseous state?
a. auxin
b. cytokinin
c. ethylene
d. gibberellin

4. the root cap
a. protects the groing root top
b. stores food in the form of starch
c. absorbs water
d. contains meristematic tissue

5. potatoes are actually
a. roots
b. tubers
c. flowers
d. leaves

6. the seed coat
a. provides the seed with nourishment
b. aids in the dispersal of seeds
c. protects the seed from drying out
d. causes the seed to reproduce

7. the diploid form in a plants life cycle is called the
a. sporophyte
b. gametophyte
c. parental generation
d. alternate generation

2007-04-26 10:57:01 · 1 answers · asked by SHAWN V 1

This is for my science class and I really need help.This due tomorrow .

2007-04-26 10:56:45 · 5 answers · asked by angelaaliyahlove 1

2007-04-26 10:56:09 · 8 answers · asked by veronica 1

How would a deletion of one nucleotide in the middle of an mRNA transcript affect the polypeptide specified by that transcript?

2007-04-26 10:53:18 · 3 answers · asked by I_NEED_HELP112211 1

2007-04-26 10:51:30 · 11 answers · asked by Jen 4