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1. What is DNA made of? What is the name of the sugar in DNA?
a) Sugar, phosphate, & nitrogneous bases (adenine, thymine, cytosine, guanine)
b) deoxyribose2. What is RNA made of? What is the name of the
sugar in RNA?
a) Sugar, phosphate, & nitrogneous bases (adenine, thymine, cytosine, guanine)
b) ribose
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3. Write the complementary DNA sequence for the DNA strand shown below.
TAC,CCA,AAA,GTG,CGC,ACG,
ATG,GGT,TTT, CAC,GCG,TGC
ATA,GAT,CGA
TAT,CTA,GCT
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4. Now write the complementary RNA sequence for the same DNA strand.
TAC,CCA,AAA,GTG,CGC,ACG,
AUG,GGU,UUU,CAC,GCG,UGC
ATA,GAT,CGA
UAU,CUA,GCU
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5. Using the RNA sequence you wrote and the translation table shown below, translate the t-RNA sequence you wrote into an amino acid (protein) strand.
Met-Gly-Phe-His-Ala-Cys-
Tyr-Leu-Ala6. Where are genes located?
On chromosomes
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7. What is the difference between a gene, a chromosome, and DNA?
a) A gene is a section of a chromosome that codes for a specific proteinb) A chromosome is a double strand of DNA that contains genes on both strandsc) DNA is the chemical compound that, along with proteins, makes up a chromosome
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8. Work the following problems:
a. A woman is homozygous for Type O blood. Her husband is heterozygous for Type AB.
Can they have a child who is Type 0? NO
Can they have a son who is Type AB? NO
(Mom) oo x AB (Dad)
o o
A
B
Ao Ao
Bo Bo
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b. A flower breeder crosses a red flower with a yellow one. All the offspring are orange. What kind of dominance is this?
Incomplete- because the offspring are a blend of the parental traits
c. Show the Punnett square and the percentages of the different offspring that you will get if you cross two of the orange flowered plants.
RY x RY pheno: red, orng, yel
R Y 25%, 50%, 25%
R geno:RR, RY, YY
Y 25%,50%, 25%
RR RY
RY YY
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9. Below are shown two karyotypes.
a) Which one is for a male? B
b) Which one is for a female? A
c) Which one shows an abnormal karyotype? Both do at # 21.
d) What condition will this karyotype cause?
• Trisomy 21 also called
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10. Define the following:
a. reproductive isolation- when one part of a population of the same or similar species cannot or does not interbreed with another
b. speciation- formation of new species
c. natural selection- survival of the best adapted to the local environment
d. genetic variation- the differences in genes that are present in or can be acquired in a population of organisms
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11. How does a bacteria become resistant to an antibiotic? Is this a genetic change?
It acquires a new gene, probably on a plasmid, that makes it resistant to the antibiotic. Yes!
12. Define the following:
a. evolution- change in something over time (usually refers to a biological change)
b. gradualism- a slow acquisition of changes
c. punctuated equilibrium- long periods of no change followed by bursts of rapid change
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• 13. Define the following:
a. vestigial structures –Structures that were larger and used more in an ancient ancestor
b. analogous structures- structures that look alike and do the same thing although the organisms on which they are found don’t have a common ancestor
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c. homologous structures- Structures that are similar in form but may have different jobs- found on organisms that had a common ancestor
14. Label the bacterium
1. Flagellum 4.Cell Membrane
2. Pilus 5. Ribosome
3. Nucleoid 6. Cell wall7. Capsule
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15. Where are the oldest fossils found, at the bottom of several layers of sediment, in the middle, or at the top? Why do you think so?
They are at the bottom, because they are laid down first.
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16.Draw & label the life cycle of a virus.
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17. What is the greatest threat to an organism that has been invaded by a virus?
The organism will die when the virus lyses it and all its contents leak away
18. Compare autotrophic organisms to heterotrophic organisms as to where & how they get energy.
Autotroph- makes own food by photosynthesis
Heterotroph- must eat another organism for food
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19.Describe what the immune system does to fight bacteria.
Phagocytes chew it up and take parts of it to the lymph nodes where the B cells design an antibody to kill it. A copy of that cell called a “memory B cell is kept in the lymph nodes to fight the bacteria again if it ever comes back.
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20. Compare bacterial conjugation to bacterial transformation.
Conj.- bacteria attaches to another bacteria with a pilus and sends a copy of its plasmid across.
Transform.- bacteria pull in DNA from dead bacteria to recycle and acquire new genes
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21. How do bacteria help us?
Help us with digestion, gut bacteria make needed clotting factors, help make cheese & yogurt, used in industry to clean up chemical spills
22.What structure does an amoeba use for locomotion? Pseudopods
a Euglena? Flagelluma Paramecium? Cilia
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23.Parameciums, Euglenas, and Amoebas are all members of what Kingdom? Protista
24. Tell what each of the following structures do in a protozoan:
a. pellicle- Support & protectionb. nucleus- runs cellc. flagellum- locomotion
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d. gullet- takes in food
e. anal pore- expels waste
f. contractile vacuole- pumps out water
25. Name all eight groups (taxons) used to group organisms in classification in order from largest to smallest.
Domain, Kingdom, Phylum, Class, Order, Family, genus, species
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26. Name three things scientists use to classify organisms into groups.
Similarities in embryo development, in DNA, and in structures
27. Use the table above to classify the following organisms:
A. It’s green, unicellular, independently moves around, and has cell walls made of cellulose.
Kingdom Protista
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B. It’s a heterotroph, has no cell walls at all, is a eukaryote and is multicellular.
Kingdom AnimaliaC. It’s a prokaryote, is unicellular and is sometimes
pathogenic.
Kingdom Archaebacteria or Eubacteria
28. Looking at the biomass pyramid below, tell which level has the most calories in it and why.
Primary Producers, because 90% of the energy is lost every time the pyramid goes up one level
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29. Use the food web shown below to draw three food chains
Plant->rabbit->Fox
Plant>insect>toad>Snake
30. Choose one of your food chains and identify the producer, primary consumer, secondary consumer, and tertiary consumer.
Producer = plants
1st=insect, 2nd= toad, 3rd= snake
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31. Define and give one example of each of the following symbiotic relationships:
A. predator/prey- predator captures & eats prey
B. Mutualism- both benefit +/+
C. parasitism- one benefits; the other is harmed +/-
D. commensalism- One benefits the otheris neither helped nor hurt +/o
All of these are symbiotic relationships- close associations between two or more organisms
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32. Fill in the table below:Structure: Function:Stem- SupportLeaf- photosynthesis, gas exchange,
transpirationRoot- absorption, anchoringFlower- reproduction, makes seedsFruit- helps seeds get scattered & startedXylem- carries waterPhloem- food flows freely thru phloem!Stomate- gas exchange (it’s the plant’s
nostril)
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33. What is the difference between a gymnosperm and an angiosperm?
Gymnosperms have scale or needle like leaves and produce seeds in cones- no fruit or flowers
34. How do you tell a monocot from a dicot?
Monocot- parallel veins, flower parts in 3, one cotyledon, fibrous roots
Dicots- netted veins, flower parts in 4 or 5, two cotyledons, tap root
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35. Define:
A. Biennial- planted one year, grows, flowers the second year
B. Perennial- planted once; grows year after year ex tree or blue planted once; grows year after year ex tree or blue berry bush
C. Annual- must be planted every year; grows and reproduces in one growing season
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36. Name the female reproductive structures of a flower and tell what they do.
Carpel (pistil)- the whole thingStygma- sticky top of carpel,
catches pollenStyle- holds up stygma Ovary- forms eggs, becomes
fruitOvules- become seedsReceptacle- the end of the twig
on which the flower forms
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37. Name the male reproductive structures of a flower and tell what they do.
Stamen- the male reproductive structure
• Anther- makes pollen
• Filament- stalk that holds up the anther
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38.Name three ways in which leaves may be modified to do other functions for a plant.
Spines or thorns- protectionBright colors- attract insects Produce toxic or stinging
compounds- protectionTendrils- long thin leaves that
coil around things- support
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39.What are the characteristics of Phylum Porifera
Body covered with pores, flagellated collar cells line the inside, only two cell layers, body shaped like sac, food is acquired & waste excreted by diffusion
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40. What are the characteristics of Phylum Insecta?
Exoskeleton of chitin, 6 legs, may have wings, three body sections, one pair of antennae
41. What are the characteristics of Phylum Annelida?
Body in segments, excretion through nephridia, tube like digestive system (mouth to anus), coelom
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42. What are the characteristics of Phylum Platyhelminthes
Flat body, sac-like digestive system,
Flame cells remove excess water, respiration by diffusion, aquatic or parasitic
43. What are the characteristics of Phylum Arachnida?
8 pairs of legs, 8 eyes, no antennae, chelicera (fangs), spinnerets, book lungs
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44. Which system is responsible for the breakdown and absorption of food?
Digestive systemWhat are the major structures of that system?
Mouth-chem. & mechanical digestion
Esophagus- tube takes food to stomach
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Stomach- chem. & mechanical digestion
Small intestine- digestion & absorption of food
Large intestine- absorption of salts, minerals, and water
Rectum- stores solid waste
Anus- exit for waste
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45. Name the three kinds of muscle cells and give one example of where each one can be found.
Cardiac- heart, looks both striped and branched, involuntary
Smooth- lines tubular organs, involuntary, spindle shaped
Skeletal- associated with bones, striped, voluntary
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Which body system filters nitrogenous waste out of the blood?
ExcretoryWhat structure actually does the
filtering?
Nephrons in the kidneys do the filtering
Kidney has three layers- cortex, medulla, & pelvis
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47. What is the muscle that moves the blood?
HeartWhat muscle makes us breath?
Diaphragm48. What body system produces the hormones?
Name one structure in this system.
Endocrine System
Hypothalamus, pituitary, thyroid, adrenal, gonads, parathyroid, pineal
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49. Which body system controls the whole body? What three parts make up this system.
Nervous system
Brain, spinal cord, 12 cranial nerves
50. Where are blood cells formed? Where are they stored?
In the red bone marrow of the flat and long bones. They are stored in the spleen.