1. Identify the characteristics of life and explain each.
2. Explain the cell theory.
3. How can you differentiate between plants and animals?
4. Draw and label the cell membrane.
5. What is an enzyme and what is the function of an enzyme?
6. How can you speed up the chemical reaction?
7. What are the reactants of photosynthesis? What are the products of photosynthesis? What are the reactants of cellular respiration? What are the products of cellular respiration?
8. Compare heterotrophic and autotrophic organisms
9. How does anaerobic and aerobic respiration differ?
10. Animal like protists can move about in pond water. Identify the different ways they can move. Explain each method.
11. What is mitosis? List the stages of mitosis. Explain the identify characteristics of each stage.
12. How does meiosis differ from mitosis? How many eggs cells are produced during meiosis?
13. Define dominance, segregation and independent assortment of genes.
14. How does homozygous and heterozygous genotypes compare?
15. Explain crossing over in sexual reproduction. What is its importance?
16. How does dominance, co-dominance and incomplete dominance in organisms compare?
17. Draw a DNA molecule. How would you explain its structure?
18. How are enzymes produced in cells?
19. Explain the theory of evolution in relation the organisms moving from the simple to the complex
20. Compare homologous structures to vestigial structures.
21. What were the first types of organisms produced? Explain one theory that explains the development of the first types of organisms.
22. Identify the contribution to science made by the following scientists
Gregor Mendel Charles Darwin Jean Lamarck Stanley Miller Fredrick Griffith Watson & Crick Erwin Chargaff Hardy – Weinberg
23. According to Darwin, what is the importance of variation in a species?
24. What is meant by the following terms: speciation, geographic isolation, and reproductive isolation?
25. Compare gradualism and punctuated equilibrium
26. Explain the difference between a population and community. Give examples of each.
27. Why is it necessary for an ecosystem to have balance between the organisms in the ecosystem and the recycling of material in the ecosystem?
28. How can you distinguish between herbivores, carnivores and omnivores?
29. Define; precipitation, condensation, transpiration and evaporation.
30. Create a simple food web. What type of organisms break down the decaying dead organisms and put the nutrients back into the ecosystem?
31. Since human mankind has the greatest impact on the environment, what can mankind do to have a positive impact on the environment?

When the London underground (subway) system was built in the nineteenth century, mosquitoes moved into the tunnels and became adapted to biting the customers and small animals that inhabit the subway system. Like people, mosquitoes can freely enter and leave through the tunnel entrances. Recently, DNA analysis and cross breeding attempts between above-ground and underground mosquitoes indicate that there are now two different species. The underground insects are visibly larger. Which term best describes what has happened?
a. behavioral incompatibility

b. temporal isolation

c. adaptive radiation

d. population bottleneck

e. geographic isolation

1.Which of the following would most likely cause geographic isolation?
A.volcanic eruption

B.a large tree falling

C.widening of a lake

D.a forest fire

2.Which of the following can occur to two segments of a population if they are geographically isolated?

A.They can only share some types of genes.

B.Eventually, they become separate species.

C.They find a way to come back together.

D.Both groups most likely become extinct.

3.Which of the following best explains why organisms of the same species that become isolated eventually become different from each other over time?

A.They do not have any of the same genes.

B.They are exposed to different environments.

C.Their DNA mutates.

D.They both find ways to survive.

Hey guys, I’ve been searching and searching, but I can’t find the answer to these questions… can someone please help me out? Thanks!

1. If a mutation introduces a new skin color in a lizard popultion, which factor determines whether the frequency of the new allele will increase?

A). How many other alleles are present
B). Whether the mutation makes some lizards more fit for their enviorment than other lizards
C). How many phenotypes the population has
D). Whether the mutation was caused by nature or by human intervention

2. Although they often live in the same habitat, the American toad breeds earlier in the spring than the Fowler’s toad does. What can be inferred from this information?

A). The two species do not interbreed because of geographic isolation
B): The two species do not interbreed because of temporal isolation
C). The two species interbreed throughout the spring seas.
D). The American toad will cause the extinction of the Fowler’s toad

3. One scientific hypothehesis about the origin of life holds that

A). RNA replaced DNA as the most stable information-storing molecule
B). RNA nucleotides were formed form simple organic molecules in an abiotic stew
C). Proteins that duplicate themselves came to function in information storage
D). As cells evolved, RNA came to direct protein synthesis

1 Organisms need nutrients in order to
A utilize hydrogen and oxygen
B carry out essential life functions
C recycle chemical compounds
D carry out nitrogen fixation

2 Cool air over the poles will
A rise
B sink
C absorb heat from the equator
D flow parallel to Earths surface

3 The series of predictable changes that occur in a community over time is called
A recombination
B ecological succession
C climax community
D climate change

4 The change of sequence of DNA is called a
A recombination
B polygenic trait
C single-gene trait
D mutation

5 Natural selection acts directly on
A alleles
B genes
C phenotypes
D mutations

6 Which of the following is NOT a way in which natural selection affects the distribution of phenotypes?
A directional selection
B stabilizing selection
C disruptive selection
D chance events

7 In genetic drift allele frequencies change because of
A mutation
B chance
C natural selection
D genetic equilibrium

8The separation of populations by barriers such as rivers, mountains or bodies of water is called
A temporal isolation
B geographic isolation
C behavioral isolation
D genetic equilibrium

9Most fossils form in
A rusty water
B volcanic rock
C sedimentary rock
D the sap of ancient trees

If you dont want to help please dont write if you only want to help as many as you know??

in the same community is referred to as

a) latent variations
b)sterility
c)structural differences
d) geographic isolation
e) reproductive isolation

2.Members of which of the following are the major primary producers in the marine ecosystems?

a)yeasts
b)sponges
c)sporozoans
d)fishes
e)diatoms

3.Which of the following bests supports the statement that mitochondria are decendents of endosymbiotic bacteria-like cells?

a)mitochondria and bacteria possess similar ribosomes and DNA
b) mitochondria and bacteria possess similar nuclei
c) glycolysis occurs in both mitochondria and bacteria
d)both mitochondria and bacteria have microtubules
e)neither mitochondria nor bacteria possess chloroplasts

4.Prokaryotic and eukaryotic cells generally have which of the following features in common?

a)a membrane-bound nucleus
b)a cell wall made of chitin
c)ribosomes
d)flagella or cilia that contain microtubules
e)linear chromosomesmade of DNA and protein

5.The rate of division of most vertebrate cells is least likely to be influenced by which of the following?

a)contact with other cells
b)the availibility of nutrients
c)compounds that inhibit protien synthesis
d) the cell’s photoperiod
e)the temperature of the organism

How does reproductive or geographic isolation affect speciation?

Describe fossil evidence for macroevolution (big changes in evolution).

Describe different types of evidence for evolution (use the following words in the answer: DNA, embryos, fossils).

Please help! I’m stuck with these questions! =[

Which of the following can occur to two segments of a population if they are geographically isolated?

They can only share some types of genes.
Eventually, they become separate species.
They find a way to come back together.
Both groups most likely become extinct.

Which of the following best explains why organisms of the same species that become isolated eventually become different from each other over time?
They do not have any of the same genes.
They are exposed to different environments.
Their DNA mutates.
They both find ways to survive.

Which of the following would most likely cause geographic isolation?
volcanic eruption
a large tree falling
widening of a lake
a forest fire

Which of the following is NOT a source of genetic variation within a species?

A)Mutations of DNA
B)New populations of same specie moves into te same area.
C)Climate Change
D)Geographic Isolation
E)All of the above ARE sources of variation within a species.

I am thinking the answer is E.
Please help me and if you could please explain it a little

1. Which of the following statements best supports the idea that certain cell organelles are evolutionarily derived from symbiotic prokaryotes?
a. mitochondria and chloroplasts have DNA and proteins very similar to those in prokaryotes
b. mitochondria and chloroplasts have similar DNA and ribosomes to prokaryotes

2. Which of the following pairs are most closely related taxonimically?
a. mushroom, tulip
b. e.coli, euglena
c. lobster, spider
d. shark, crayfish
e. dolphin, sea star

3. catalyzes elongation of new DNA at replication fork
a. DNA polymerase
b. Primer

4. In two different populations of wild boars were introduced to an isolated geographic area in 1905. Pop. A grew exponentially, and Pop. B grew logistically to a carrying capacity of about 1500.
The split that occurred in the two pop. may have been the direct result of
a. convergent evolution
b. speciation
c. segregation
d. geographic isolation
e. bottleneck effect

Thanks so much!