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Biology - March 2007

[Selected]: All categories Science & Mathematics Biology

pyrimidine, triphosphate, ligase, deoxyribose.

2007-03-08 15:34:25 · 1 answers · asked by Anonymous

the size of a population of mice on an isolated island has remained constant for 50 years. what is the average number of offspring that each breeding pair produce during their lifetime that survive to reproductive maturity and reproduce?

2007-03-08 15:23:11 · 4 answers · asked by missy862002 1

it the amino acid sequences in gorillas and humans are similar , are the nucleotide sequences of thir DNA also similar? why?

2007-03-08 15:13:02 · 3 answers · asked by Jennifer L 2

can you explain it please?

2007-03-08 15:10:40 · 3 answers · asked by Jennifer L 2

Regulation of breathing depends upon brain receptors that detect changing blood levels of:
a. ATP
b. glucose
c. carbon dioxide
d. oxygen

The most successful of the invertebrate phyla with respect to numbers of species is:
a. Annelida
b. Arthropoda
c. Mollusca
d. Echnodermata

What substance does your body produce to block the pain caused by eating chili peppers?

Who is responsible for antibiotic resistance? Why?

2007-03-08 15:05:16 · 3 answers · asked by mustang_jenn2005 2

Would a frame shift mutation have a more serious effect if it occured near the beginning of a gene or the end of a gene? Explain your answer.

this is what i put: It would have a more serious effect if it occured near the beginning of a gene because it will prevent a number of codons from coding for the proper amino acids.

my teacher said i needed to explain it though. i thought i did but i guess i didnt. please help me on this though.

explain your answer in no more than 2 sentences please, because my teacher likes the answers short and brief. thanks!

2007-03-08 15:04:59 · 4 answers · asked by Anonymous

A mutation is a change in:
a. homeostasis
b. metabolism
c. heredity instructions
d. none of the above

Backflow of blood is prevented in the veins by:
a. muscular contractions inside the vein walls
b. shunting of blood around organs
c. small valves located in the veins
d. increasing pressure in the capillaries

The smallest air tubes that lead directly to the air sacs are called:
a. bronchi
b. trachea
c. bronchioles
d. diaphragm

This type of respiratory strategy involves openings (called spiracles) in the exoskeleton leading to tubes in the body called:
a. tracheae
b. gills
c. lungs
d. body surface

Genetic drift is most pronounced in a population that is:
a. large
b. extinct
c. small
d. highly heterozygous

Answer them all correctly - you get best answer
can't answer them all just take a stab at them and maybe you'll get best answer.

2007-03-08 15:01:52 · 7 answers · asked by mustang_jenn2005 2

I did a biology lab on crickets and their behavior towards light and shaded areas. Crickets, being nocturnal, naturally tended to go toward the shaded areas. We then manipulated the experiment to see if different colored filters of light (yellow, green, purple, red) changed their behavior. Our results were that in yellow, more crickets were in the shaded area. In green, more crickets were in the green light. In purple, more crickets were in the purple light, and in red light, more crickets were in the red light. I can't think of any way to explain this and was thinking that maybe different colors had different intensities... Any help or clarification would be great!

2007-03-08 14:47:18 · 5 answers · asked by gtong 1

what phase of resperation is used or produced by co2 ? what does the calvin cycle have to do with co2 ? what does cellular resperation have to do with co2 ?

2007-03-08 14:20:14 · 2 answers · asked by jimp1174 1

2007-03-08 14:09:14 · 6 answers · asked by tsunami_xza 1

2007-03-08 14:01:42 · 3 answers · asked by yankeesnmbr5 1

protist
bacteria
fungi

2007-03-08 13:58:28 · 5 answers · asked by Mia 2

long story short cant provide too much deatil:::

there was a fight at my school. One boy got beat up pretty badly. There was internal bleeding, either in front of or behind his kidneys. & his "butterfly bone" got broken. what exactly is the butterfly bone? is that the bone thats at the very end of ur ribs that parametics have to be careful of when giving cpr?

2007-03-08 13:51:15 · 2 answers · asked by Anonymous

The primary threat to life when the circulatory system is damaged is:

a. lack of oxygen to vital tissues
b. loss of blood and nutrients
c. irregular heartbeat
d. broken blood vessels

2007-03-08 13:50:13 · 7 answers · asked by shane200388 1

why is genetic information carried on mtDNA said to be inherited maternally?

and

Can children inherit mutations in their mitochondrial DNA from their father? why or why not??

please&thankyou

2007-03-08 13:43:10 · 2 answers · asked by Bee 2

0

Viruses are unique because they:

a. cannot exist outside another living organism
b. cannot replicate without the use of host cells
c. contain viral nucleic acid (VNA) and no DNA or RNA
d. grow like crystalline structures

2007-03-08 13:38:28 · 7 answers · asked by shane200388 1

My mother told me I was type 0 positive but what is 0 negative?

P.S Read the Blood Tyoe Diet Invividualized by Peter J D'adamo.

2007-03-08 13:34:07 · 5 answers · asked by Xraidedprincess 2

Fossils offer an opportunity to study all of the following EXCEPT:

a. extinct life-forms
b. similarities between life-forms
c. the distribution of life-forms
d. the beginning of life

2007-03-08 13:28:20 · 4 answers · asked by shane200388 1

Asexual species may become extinct sooner than sexual ones because:

a. the limited diversity in offspring reduces the chances for survival during periods of change
b. asexual species multiply faster than the food supply
c. sexual species can hibernate during extreme weather
d. none of the above

2007-03-08 13:27:27 · 7 answers · asked by shane200388 1

2007-03-08 13:15:32 · 8 answers · asked by lilbutterfly555 1

2007-03-08 12:22:22 · 1 answers · asked by sbeharry03 1

Why can our body temperature be 98.6 degrees and we feel fine, but if it is 98.6 degrees outside one gets uncomfortable? best answer gets 10 points!

2007-03-08 12:21:17 · 8 answers · asked by bob888 3

I recently watched a movie called Idiocracy which took place in the year 2506. Everyone was stupid because evolution had favored those who bred the most. The movie implied that those who bred the most tended to be less intelligent. As a result, society gradually dumbed down. Do you see this happening now, and if so, what do you think that the effects will be in the future?

2007-03-08 12:18:32 · 3 answers · asked by zygmunt82 1

Ok, because teachers are evil, my Sociology teacher assigned a paper over Spring break. I need your help. If you could please send me 10-12 words that you think relate to 'aging' or 'old' you will be my next best friend (after the 15 people I have already promised die.) So for example, you might think that 70 is 'old' so that would be one of your words (or phrases) Please give your answers in list form. I have to get 14+ people this next week. If you do choose to participate, please include your Age, Gender, Location, and Ethnicity as these are all part of the assignment. If you don't include them I have to guess. Thanks everyone

Please give your answers in list form like this:
1. 70
2. walkers
3.
4.
etc
thanks!

2007-03-08 12:10:55 · 5 answers · asked by wildchild 3

2007-03-08 12:09:55 · 5 answers · asked by MARIA TITA V 1

I have some questions I can't find answers to. Can you help?

6. When you pulled the skin back from the muscles, what was the yellowish substance found between the two?
11. Explain the reason why a frog's ventral side is lighter in color than the dorsal side?
22. During one mating of frogs, the female lays some 2000 to 3000 eggs in water as the male sheds millions of sperm over them. How do these large numbers relate to the frog's fitness for life in water?

Thanks!!

2007-03-08 12:03:59 · 1 answers · asked by Anonymous

its just a rather odd and totally useless thing i can do... is there an electrical signal or something that the brain sends to the skin or something that does this? im really clueless about it, so if anyone has any information on how or why then that would be interesting.

2007-03-08 11:56:15 · 5 answers · asked by anakissm 1

Also- What molecule is the source of energy for the first step of glycolysis?
Help - I am helping my daughter and this stuff is hard!

2007-03-08 11:51:17 · 6 answers · asked by ***35*** 3

a- protons
b- citric acid
c- NADH
d- oxygen

2007-03-08 11:49:56 · 3 answers · asked by : ) 2

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