Author: Biology Junction Team

Flat and Roundworms Study Guide

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Flat and Roundworms Quiz

 

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 1.
Planarians can reproduce asexually by
a.
 fission.
c.
 producing polyps.
b.
 forming larvae.
d.
 exchanging both sperm and eggs.
 2.
Which of the following is not found in flatworms?
a.
 an anterior end
c.
 bilateral symmetry
b.
 a circulatory system
d.
 a nervous system
 3.
Flatworms have no need for circulatory and respiratory systems because
a.
 the digestive system performs these functions.
b.
 their cells are close to the animal’s exterior surface.
c.
 the spherical body shape allows diffusion of materials into tissues.
d.
 the coelom is bathed in blood and oxygen.
 4.
Schistosomiasis is a disease caused by a
a.
 roundworm.
c.
 cestode.
b.
 trematode.
d.
 planarian.
 5.
turbellarians : free-living ::
a.
 planaria : parasitic
c.
 cestodes : free-living
b.
 tapeworms : free-living
d.
 flukes : parasitic
 6.
Which of the following statements about tapeworms is false?
a.
 They can infect a person who eats undercooked food.
b.
 They belong to the genus Schistosoma.
c.
 They can grow to be large in human intestines.
d.
 They do not have a digestive system.
 7.
To which phylum do roundworms belong?
a.
 Annelida
c.
 Platyhelminthes
b.
 Nematoda
d.
 Arthropoda
 8.
Roundworms have a fluid-filled cavity called a
a.
 coelom.
c.
 digestive system.
b.
 pseudocoelom.
d.
 None of the above
 9.
Roundworms have a digestive tract with ____ opening(s).
a.
 three
c.
 one
b.
 two
d.
 no
 10.
All of the following groups of invertebrates are coelomates except
a.
 annelids.
c.
 mollusks.
b.
 echinoderms.
d.
 nematodes.
 11.
A roundworm’s digestive tract can be considered an advancement over a gastrovascular cavity because
a.
 food moves through it in only one direction.
b.
 different parts of the tract can carry out different functions.
c.
 undigested wastes do not have to leave through the same opening where food is taken in.
d.
 All of the above
 12.
The nematode Ascaris lumbricoides infects humans, spending most of its adult life inside the intestines of its host. To be infected, a person must
a.
 consume the nematode’s eggs.
b.
 walk barefoot on infested soil.
c.
 sit on an infested toilet seat.
d.
 All of the above
 13.
A type of roundworm that lives a parasitic life is
a.
 Ascaris.
c.
 Trichinella.
b.
 Enterobius.
d.
 All of the above
 14.
A rotifer uses ____ to collect excess water in order to remove the water from the body.
a.
 diffusion
b.
 kidneys
c.
 flame cells and excretory tubules
d.
 a mastax
 15.
Which of the following statements is not true?
a.
 Most tapeworms are hermaphrodites.
b.
 Planarians reproduce both sexually and asexually.
c.
 Some rotifers reproduce by parthenogenesis.
d.
 Because they are all parasitic, roundworms reproduce asexually.
 16.
Tapeworms absorb food from the host through their
a.
 scolex.
c.
 suckers.
b.
 tegument.
d.
 None of the above
 17.
Humans can avoid trichinosis by
a.
 avoiding undercooked meat.
b.
 avoiding public restrooms.
c.
 wearing shoes outdoors.
d.
 washing their hands frequently.
 18.
Which of the following has a cloaca?
a.
 a fluke
c.
 a rotifer
b.
 a nematode
d.
 a tapeworm
 19.
Parasitic flatworms
a.
 probably evolved from free-living organisms.
b.
 gave rise to free-living flatworms.
c.
 have a gut with two openings.
d.
 are found mostly in the class Turbellaria.
 20.
Which of the following is not true about the planarian nervous system?
a.
 It includes a ladderlike arrangement of nerves.
b.
 It provides the ability to sense light intensity.
c.
 It includes one ventral nerve cord.
d.
 It provides the ability to learn.
 

Completion
Complete each statement.
 21.
A schistosome is a member of the phylum ____________________.
 22.
The ability of some animals, such as flatworms, to regrow lost parts of their bodies is called ____________________.
 23.
Flatworms take up oxygen and release carbon dioxide by the process of ____________________, which occurs across the body surface of the animals.
 24.
The ____________________ is a protective cellular covering of the bodies of endoparasitic flukes that prevents them from being digested by their hosts.
 25.
____________________ are rectangular body sections of tapeworms.
 26.
Roundworms are members of the phylum ____________________.
 27.
Roundworms take in food through the mouth and eliminate wastes through an opening at the other end of the digestive tract called the ____________________.
 28.
Organisms that feed by using cilia to sweep food into their mouths are called ____________________.
 29.
____________________ are the simplest animals with bilateral symmetry.
 30.
Concentration of sense organs at the anterior end can be observed in flatworms and is called ____________________.
 31.
A planarian takes in food through the ____________________.
 32.
The ____________________ is a noncellular layer that protects a roundworm.
 33.
Being infected with ____________________ worms can cause a condition known as elephantiasis.
 

Essay
 34.
A planarian cannot eat when food is already in its gut. Why? Write your answer in the space below.


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Virus Study Guide

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Virus Quiz

 

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 1.
Viruses are considered nonliving because
a.
 they cannot reproduce by themselves.
b.
 they are not made up of cells.
c.
 they cannot carry out metabolism by themselves.
d.
 All of the above
 2.
The study of viruses is a part of biology because
a.
 they belong to the kingdom Eubacteria.
b.
 they are about to become extinct.
c.
 they are living organisms.
d.
 they are active inside living cells.
 3.
Biologists now know that viruses
a.
 are the smallest organisms.
b.
 consist of a protein surrounded by a nucleic acid coat.
c.
 contain RNA or DNA in a protein or lipid-protein coat.
d.
 all form the same crystalline shape.
 4.
The capsid of a virus is the
a.
 protective outer coat.
b.
 cell membrane.
c.
 nucleus.
d.
 cell wall and membrane complex.
 5.
Viruses are classified according to
a.
 whether they contain RNA or DNA.
b.
 the shape of their genome.
c.
 whether they have a membrane envelope.
d.
 All of the above
 6.
All viruses have
a.
 cytoplasm.
c.
 mitochondria.
b.
 ribosomes.
d.
 None of the above
 7.
Tobacco mosaic virus
a.
 is able to be crystallized.
b.
 causes disease in tobacco plants.
c.
 is smaller than a bacterium.
d.
 All of the above
 8.
Scientists first began to study viruses because they
a.
 were seen through a microscope.
b.
 could not be seen but caused disease.
c.
 formed crystals.
d.
 were made of cells.
 9.
Viruses that use reverse transcriptase to cause their host cells to transcribe DNA from an RNA template are called
a.
 bacteriophages.
c.
 retroviruses.
b.
 antibodies.
d.
 capsoviruses.
 10.
Which of the following contains only RNA?
a.
 a prion
c.
 a viroid
b.
 a virus
d.
 All of the above
 11.
Unlike viruses, prions
a.
 are capable of reproducing outside of a host cell.
b.
 are composed only of protein.
c.
 can cause brain infections.
d.
 can be treated with antibiotics.
 12.
A typical virus consists of
a.
 a protein coat and a cytoplasm core.
b.
 a carbohydrate coat and a nucleic acid core.
c.
 a protein coat and a nucleic acid core.
d.
 a polysaccharide coat and a nucleic acid core.
nar001-1.jpg
 13.
Refer to the illustration above. Which structure could possibly be made of RNA?
a.
 structure 2
c.
 structure 4
b.
 structure 3
d.
 structure 5
 14.
Refer to the illustration above. Which structure is found outside the cell after the cell is infected?
a.
 structure 1
c.
 structure 3
b.
 structure 2
d.
 structure 4
 15.
Viruses
a.
 are cellular organisms.
b.
 reproduce only in living cells.
c.
 have nuclei and organelles.
d.
 are surrounded by a polysaccharide coat.
 16.
Animal viruses often infect only specific host cells because
a.
 the virus must have the same DNA as the host cell.
b.
 the host cell must have specific receptors for proteins on the virus surface.
c.
 viruses have receptors for host cell glycoproteins.
d.
 the enzymes of the virus can attach only to specific host cells.
 17.
In which cell cycle(s) does viral DNA become integrated into the host cell’s DNA?
a.
 lytic
b.
 lysogenic
c.
 neither lytic nor lysogenic
d.
 both lytic and lysogenic
 18.
Antibiotics are ineffective against viral infections because
a.
 host cells protect the viruses.
b.
 viruses have enzymes that inactivate the antibiotics.
c.
 antibiotics interfere with cellular processes that viruses do not perform.
d.
 viral protein coats block the antibiotics from entering the virus.
 19.
Which of the following is not a viral disease of humans?
a.
 hepatitis
b.
 SARS
c.
 shingles
d.
 All of the above are viral diseases of humans.
 20.
Which of the following is not linked to cancer?
a.
 Ebola virus
c.
 hepatitis B virus
b.
 human papillomavirus
d.
 Epstein-Barr virus
 21.
Which of the following human activities is most closely associated with the emergence of viruses not previously seen in humans?
a.
 absence of a vaccination program
b.
 crowded living conditions
c.
 clearing of forests for housing
d.
 eating uncooked meat
 22.
Most scientists think that early viruses originated from
a.
 other viruses.
b.
 existing cell parts.
c.
 animals.
d.
 spontaneous generation.
 23.
HIV causes AIDS by
a.
 converting a proto-oncogene to an oncogene.
b.
 damaging a person’s blood vessels.
c.
 destroying the covering of a person’s nerves.
d.
 gradually destroying a person’s immune system.
 24.
Which of the following is not a vector of viral diseases?
a.
 mosquitoes
c.
 prions
b.
 ticks
d.
 humans
 25.
Which of the following has been the most successful at fighting viral diseases?
a.
 vaccination
c.
 drug therapy
b.
 vector control
d.
 Both a and b
 26.
Most scientists believe that viruses first appeared on Earth ____ living cells appeared.
a.
 after
b.
 a very long time before
c.
 at the exact time when
d.
 immediately before
 

Completion
Complete each statement.
 27.
The protein coat of a virus is called a(n) ____________________.
 28.
Viruses can vary in size and ____________________.
 29.
A virus that transcribes DNA from an RNA template is called a(n) ____________________.
 30.
An enzyme called _________________________ manufactures DNA that is complementary to a virus’s RNA.
 31.
____________________ are viruses that infect bacteria and have a polyhedral head and a helical tail.
 32.
All viruses reproduce by taking over the reproductive machinery of a(n) ____________________.
 33.
Viruses that infect a host cell and have their nucleic acid replicated but do not harm the host cell are in a(n) ____________________ cycle.
 34.
The replication of a temperate virus includes the ____________________ cycle.
 35.
The virus that causes AIDS is called _________________________.
 36.
Some viruses are thought to induce ____________________, a disease characterized by uncontrolled cell division.
 37.
The Ebola virus, the SARS virus, and hantavirus are examples of ____________________ viruses.
 38.
In the ____________________ cycle, viruses destroy the host cell.
 39.
Chickenpox and ____________________ are caused by the same virus.
 

Problem
 40.

A new disease has suddenly appeared and scientists are trying to determine whether the disease agent is a virus or a bacterium. They collect the following information:

1.      The disease can be transmitted through the air.
2.      The disease agent is too small to be seen under a light microscope.
3.      There are no known antibiotics that are effective against the disease.
4.      The genetic material of the disease agent is DNA.
5.      The disease agent cannot be cultured using any known culture medium.

Is the disease agent most likely a bacterium or a virus? Explain your answer. Write your answer in the space below.

 
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What’s Your Style

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What’s Your Learning Style

For these questions, choose the first answer that comes to mind and click on a, b, or c. Don’t spend too much time thinking about any one question.

Question 1
    1. When you study for a test, would you rather

      1. a) read notes, read headings in a book, and look at diagrams and illustrations.

      1. b) have someone ask you questions, or repeat facts silently to yourself.

    1. c) write things out on index cards and make models or diagrams.
Question 2
    1. Which of these do you do when you listen to music?

      1. a) daydream (see things that go with the music)

      1. b) hum along

    1. c) move with the music, tap your foot, etc.
Question 3
    1. When you work at solving a problem do you

      1. a) make a list, organize the steps, and check them off as they are done

      1. b) make a few phone calls and talk to friends or experts

    1. c) make a model of the problem or walk through all the steps in your mind
Question 4
    1. When you read for fun, do you prefer

      1. a) a travel book with a lot of pictures in it

      1. b) a mystery book with a lot of conversation in it

    1. c) a book where you answer questions and solve problems
Question 5
    1. To learn how a computer works, would you rather

      1. a) watch a movie about it

      1. b) listen to someone explain it

    1. c) take the computer apart and try to figure it out for yourself
Question 6
    1. You have just entered a science museum, what will you do first?

      1. a) look around and find a map showing the locations of the various exhibits

      1. b) talk to a museum guide and ask about exhibits

    1. c) go into the first exhibit that looks interesting, and read directions later
Question 7
    1. What kind of restaurant would you rather not go to?

      1. a) one with the lights too bright

      1. b) one with the music too loud

    1. c) one with uncomfortable chairs
Question 8
    1. Would you rather go to

      1. a) an art class

      1. b) a music class

    1. c) an exercise class
Question 9
    1. Which are you most likely to do when you are happy?

      1. a) grin

      1. b) shout with joy

    1. c) jump for joy
Question 10
    1. If you were at a party, what would you be most likely to remember the next day?

      1. a) the faces of the people there, but not the names

      1. b) the names but not the faces

    1. c) the things you did and said while you were there
Question 11
    1. When you see the word “d – o – g”, what do you do first?

      1. a) think of a picture of a particular dog

      1. b) say the word “dog” to yourself silently

    1. c) sense the feeling of being with a dog (petting it, running with it, etc.)
Question 12
    1. When you tell a story, would you rather

      1. a) write it

      1. b) tell it out loud

    1. c) act it out
Question 13
    1. What is most distracting for you when you are trying to concentrate?

      1. a) visual distractions

      1. b) noises

    1. c) other sensations like, hunger, tight shoes, or worry
Question 14
    1. What are you most likely to do when you are angry?

      1. a) scowl

      1. b) shout or “blow up”

    1. c) stomp off and slam doors
Question 15
    1. When you aren’t sure how to spell a word, which of these are you most likely to do?

      1. a) write it out to see if it looks right

      1. b) sound it out

    1. c) write it out to see if it feels right
Question 16
    1. Which are you most likely to do when standing in a long line at the movies?

      1. a) look at posters advertising other movies

      1. b) talk to the person next to you

    1. c) tap your foot or move around in some other way

Total your a’s, b’s, and c’s

 

Reptile Quiz

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Reptiles
  1. Which of the following made it possible for reptiles to make a complete transition to land?
    amniote egg
    3 chambered heart
    double loop circulation
    nictitating membrane
  2. Which of the following pairs is most closely related?
    snake & lizard
    crocodile & tuatara
    alligator & komodo dragon
    alligator & alligator snapping turtle
  3. Which part of the amniote egg is responsible for storing waste?
    chorion
    yolk sac
    amnion
    allantois
  4. Sea snakes and turtles breathe:
    with gills
    with lungs
    through their skin
    through their chorion
  5. Turtles and Tortoises belong to the ORDER:
    Squamata
    Crocodilia
    Chelonia
    Rynchocephalia
  6. Which organ on the snake is responsible for detecting odors?
    cloaca
    pit organ
    Jacobson’s organ
    venom gland
  7. Which of the following reptiles is known as a “living fossil”?
    tuatara
    komodo dragon
    sea turtle
    anaconda
  8. The top of a turtle’s shell is called the:
    plastron
    amnion
    carapace
    ventricle
  9. Snakes are thought to have evolved from:
    crocodilians
    lizards
    eels
    salamanders
  10. Ovoviviparous snakes:
    are venomous
    incubate eggs within the body
    lay eggs in nests
    do not have an amnion

Score =
Correct answers:

Taxonomy Quiz

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Taxonomy
  1.  Which of the following pairs is MOST closely related?
    dog & tapeworm
    tapeworm & bacteria
    mushroom & tree
    ameba & bacteria
  2. Organisms in the Kingdom Animalia are:
    multicellular & heterotrophic
    multicellular & autotrophic
    unicellular & autotrophic
    unicellular & autotrophic
  3. Which of the following groups would contain the largest number of organisms?
    class
    order
    phylum
    family
  4. A scientific name contains information about its:
    family & species
    genus & species
    phylum & order
    class & family
  5. What do plants and animals have in common?
    both are heterotrophic
    both are autotrophic
    both are prokaryotic
    both are eukaryotic
  6. The current classification system was devised by:
    Aristotle
    Plato
    Linnaeus
    Darwin
  7. Instead of phylum, plants use which category?
    division
    subspecies
    class
    subkingdom
  8. If two organisms are in the same phylum, they must also be in the same:
    class
    species
    family
    kingdom
  9. Which kingdom contains “extreme halophiles”?
    eubacteria
    archaebacteria
    fungi
    protista
  10. A dichotomous key is used to:
    locate an organism
    identify an organism
    divide a kingdom
    interbreed species

Score =
Correct answers: