Tag Archive | "Cell"

I Need Some Help On A Few Questions For An Ap Bio Test. Please Help!?


1. Why was Darwin surprised by the discovery of elephant and hippo-resembling fossils in a riverbed in Argentina?
a. Darwin didn’t know that elephants and hippos could exist in the same habitat together.
b. Darwin had found similar fossils on the Cape Verde Islands.
c. Elephant-like and hippo-like animals no longer lived in Argentina.
d. No fossils had ever been found in Argentina.
Why is it said that the English rabbit and Patagonian hare occupy a similar niche?\
a. Both hares and rabbits live primarily on islands.
b. They are both adapted for a grazing lifestyle.
c. Both hares and rabbits have large ears.
d. They both belong to the same species.
2. A biologist was experimenting with plant cells. She ground up the cells and centrifuged the mixture and then separate the cell fractions, but she forgot to label the different fractions. When she tested fraction A, she found that it took up CO2 and released O2. She concluded that this fraction contained…
a. mitochondria.
b. chloroplasts.
c. lysosome.
d. ribosome.
e. vacuole.
3. All of the following statements about chromosomes are true EXCEPT
a. DNA condenses during mitosis in the life cycle of the cell.
b. A replicated chromosome consists of two chromatids that are identical.
c. An acrocentric chromosome has its centromere on the end of the chromosome.
d. Chromatin consists of DNA with associated proteins.
4. All of the following statements regarding the events of meiosis are correct EXCEPT
a. Synapsis and independent assortment are responsible for variation among the species.
b. Homologous chromosomes are always identical, and always control the same trait.
c. Synapsis refers to the process where chromosomes associate to form homologous pairs.
d. Chromosome pairs assort independently from one another during meiosis.
5. All of the following statements regarding spematogenesis are true EXCEPT
a. Testicles are descended below the body because of the lower temperature requirement for spermatogenesis.
b. The function of the nucleus of the sperm is to deliver a diploid set of genes to the egg cell.
c. In terms of layering, the outermost wall of the seminiferous tubules of the testes is where spermatids are found.
d. In the testes, the male germ cell allows for both mitosis and meiosis.
6. Restriction enzymes are sometimes used in the laboratory to
a. restrict DNA replication.
b. restrict DNA transcription.
c. restrict mRNA translation.
d. cut DNA molecules at specific sites.
e. cut DNA into manageable sizes for manipulation.
7. Select the example of passive transport across a cell membrane:
a. stimulation of a muscle cell.
b. uptake of glucose by microvilli of cells lining the intestine.
c. the movement of insulin across the cell membrane.
d. the movement of carbon dioxide across the cell membrane.
e. the movement of sodium ions across the cell membrane.
Thanks to anyone who will answer these. 🙂 I have most of them narrowed down but I can’t figure em out by any means /:

Posted in Affiliate Marketing 101Comments (0)

I’m Looking For Some Free Site Where I Can Advertise My Free Online Cell Phone Business. ?


Need a new cell phone? There are many free phone as well as deeply discounted phone and oters services. http://www.tmiwireless.com/?aid=52230. Want to join the business for free and make money? Visit http://www.tmiwireless.com/affiliate/?aid=52230. All you have to do is be creative in getting the word out and get paid when someone make a purchase.

Posted in Featured ArticlesComments (0)

I’m Looking For Some Free Site Where I Can Advertise My Free Online Cell Phone Business. ?


Need a new cell phone? There are many free phone as well as deeply discounted phone and oters services. http://www.tmiwireless.com/?aid=52230. Want to join the business for free and make money? Visit http://www.tmiwireless.com/affiliate/?aid=52230. All you have to do is be creative in getting the word out and get paid when someone make a purchase.

Posted in Featured ArticlesComments (0)

Where Can I Find Microfusion Cell Ammo In Fallout 3?


I’ve just recently finished A Replica Man mission and told Harkness (A3-21) that his secret is safe with me and he gave me this very special plasma gun. Now, I just went on a mission using that gun and used up all the ammo. I’ve checked all the markets/stores in the areas I’ve been to already and I can’t seem to find the ammo that is required for this gun. Can someone help me find where I could find some?

Posted in Affiliate Marketing 101Comments (0)

Biology Help Please!!!?


1. Which of the following infectious organisms is the smallest?
A) Prion
B) Viroid
C) Virus
D) Bacteria
2. All of the following are reasons why “superbugs”have become a serious health issue EXCEPT:
A) antibiotic overuse.
B) antiobiotic shortages.
C) antibiotic underuse.
D) antibiotic misuse.
3. What kind of cell does a phage infect?
A) Mammalian cell
B) Plant cell
C) Eukaryotic cell
D) Bacterial cell
4. All of the following are ways that bacteria benefit ecosystems EXCEPT:
A) Recycle hydrogen through the ecosystem
B) Recycle carbon through the ecosystem
C) Produce oxygen through photosynthesis
D) Produce carbon dioxide through photosynthesis
5. In a lysogenic infection, once the DNA of the virus is incorporated into the bacterial DNA, the DNA is
called a
A) prion.
B) viroid.
C) prophage.
D) plasmid.
6. The normal bacteria present on our skin are beneficial because
A) they fill the niche so harmful bacteria cannot grow there.
B) they can not cause diseases in our bodies.
C) they open the niche for harmful bacteria to grow.
D) they cause minor diseases that are easily treated.
7. A bacteria that is capable of living in an environment with or without oxygen is called a(n)
A) obligate anaerobe.
B) obligate aerobe.
C) facultative anaerobe.
D) facultative aerobe.
8. In the bacterium in Figure 18.2, what is the structure labeled B?
A) Pili
B) DNA
C) Plasmid
D) Flagellum
9. In the bacterium in Figure 18.2, what is the structure labeled C?
A) Pili
B) Cell wall
C) Plasmid
D) Flagellum
10. Bioremediation uses microbes to
A) produce carbohydrates.
B) clean up pollutants.
C) convert atmospheric nitrogen.
D) break down food.
11. When used properly, antibiotics can fight
A) viral infections.
B) fungal infections.
C) HIV infections.
D) bacterial infections.
12. Prokaryotes provide ________ to humans and other organisms
A) habitats.
B) antibiotics.
C) nutrients
D) endocytosis
13. An infectious particle made of a strand of nucleic acid surrounded by protein is a
A) bacteria.
B) virus.
C) viroid.
D) prion.
14. Viruses that infect bacteria are called
A) bacteriophages.
B) helical viruses.
C) polyhedral viruses.
D) prophages.
15. Which of the following type of infectious agent can cause an infected host to cell burst in a lytic infection?
A) Bacteria
B) Fungus
C) Prion
D) Virus
16. When HIV causes a lysogenic infection, it can remain dormant for years. When it becomes a lytic
infection, it
A) causes no symptoms.
B) destroys white blood cells.
C) mutates infrequently.
D) can no longer cause AIDS.
17. An endospore may survive a drought because it is protected by a
A) hollow bridge.
B) thick wall.
C) plasmid replication.
D) plasma membrane.
18. How do humans benefit from bacteria living in the digestive system?
A) Bacteria adapt to fluctuations in temperature.
B) Bacteria get food and a place to live.
C) Bacteria produce vitamins humans need.
D) Humans make nitrogen the bacteria can use.
19. Chemicals that kill bacteria or slow their growth are called
A) toxins.
B) antibiotics.
C) endospores.
D) plasmids.
20. Misuse of antibiotics can lead to multidrug resistance in
A) humans.
B) bacteria.
C) viruses.
D) antibiotics.
21. Bacteria can cause disease to a host by all of the following EXCEPT:
A) Invading tissues and attacking cells.
B) Making poisons that are transported through blood.
C) Producing antibodies to make a vaccine ineffective.
D) Making toxins that are carried by blood.
22. A person is given antibiotics to combat pneumonia. After two days, the person feels better and decides not to continue taking the medicine. This could help the bacteria evolve because it
A) allows bacteria that were somewhat resistant to live.
B) introduces new bacteria into the system.
C) increases the number of antibiotics prescribed.
D) decreases the amount of bacteria that survive.
23. Using antibiotics when bacteria are not causing an illness may make some bacteria
A) avoid the organism beng treated.
B) become extinct due to overexposure.
C) resisant to the antibiotics used.
D) produce fewer toxins that usual.
24. Which of the following is NOT a factor in bacteria becoming antibiotic resistant?
A) misuse
B) animal use
C) overuse
D) underuse
25. Prokaryotes benefit plants by
A) providing antibiotic resistance to roots
B) converting nitrogen into a useable form
C) producing carbon dioxide for photosynthesis
D) producing endospores for survival

Posted in Affiliate Marketing 101Comments (0)

Thinking About Doing An Adult Site?


I was thinking about starting an adult blog doing some affiliate material and quite a bit of original material don’t I get tons and tons of cell phone pictures from guys all over the world all the time. I wanted to some how mix the pics i recieve in with the affiliate material just to keep new orginal material that competitors wouldnt have in. but i have many questions
1. How is my target audience, I know for a face all the guys in the pics i have are straight males so it could be women but gay is a larger market and they will look any way, Should i do Gay porn affiliate Or straight, I considered doing both but haveing both would probably do more harm than just choosing one. Gay guys not interested in straight porn Women not interested in gay men
2. Would i have to pay the guys? I wouldnt be selling the cell phone pics they would be free content like everything else just there hopeing to attract more traffic
3. Legally am i allowed to post their pictures? the pictures were sent from them to me? do i own the pics?
4. Could You give me an example (url) of a successful adult blog? using affiliate stuff

Posted in Featured ArticlesComments (0)

Archives

Powered by Yahoo! Answers