General Biology Quiz I with Answers

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1

“After a scientist performs experiments to test a hypothesis, they analyze their data in order to develop a ____.”

  • Conclusion
  • Theory
  • Assumption
  • Hypothesis

2

“Humans reintroduced the gray wolf to the Yellowstone area starting in the year 2000. Elk have begun to decrease in numbers in the park since that time. If, the older, more slowly moving, or sick elk are being easily removed by the wolves, what type of change are we observing?”

  • Artificial selection
  • Acquired change
  • Natural selection
  • Increased adaptation

3

“One of the most common elements found in living organisms is most often found in a central position within carbohydrates, proteins, lipids and nucleic acids. Which element is this?”

  • Phosphorous
  • Calcium
  • Nitrogen
  • Carbon

4

How do lipids differ from other large biological molecules?

  • They do not have specific shapes
  • They are much larger
  • They contain nitrogen atoms
  • They are not polymers

5

“Which of the following are identified as living, based upon the cell theory?”

  • Multicellular organisms only
  • “Bacteria, protists, and plants”
  • “Bacteria, viruses, and plants”
  • Multicellular organisms and viruses

6

“You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them through a microscope, and see cell walls and membrane-bound organelles. What can be concluded about the cells?”

  • They are animal cells
  • They are prokaryotic cells
  • They are bacterial cells
  • They are plant cells

7

Organisms are grouped into one of three domains based upon what criteria?

  • Differences in ribosomal RNA structure
  • Differences in primary protein structure
  • Differences in DNA helix structure
  • Differences in nuclear envelope structure

8

Photosynthesis occurs in which of the following domains?

  • Domains bacteria and eukaryote
  • Domain archaea only
  • Domains bacteria and archaea
  • Domain eukaryote only

9

“In a food chain consisting of phytoplankton –> zooplankton –> fish –> fisher, the fisher is considered to be what?”

  • Tertiary consumer
  • Quaternary consumer
  • Secondary consumer
  • Secondary producer

10

“A fruit fly has eight chromosomes in its cells. At the end of anaphase one in meiosis, how many chromosomes are present?”

  • Two
  • Eight
  • Four
  • Sixteen

11

“In designing an experiment to test a hypothesis, many factors are involved; variables, controls, environments, specific data to be collected. What is the most critical aspect, however, of designing any experiment?”

  • “That differences in factors, such as genetics, cannot be controlled”
  • That differences in factors are acceptable as long as we write them down
  • That all factors are identical except the dependent variable
  • That all factors are identical except the one being tested

12

A plant sitting near a window eventually results in the leaves bending towards the light. How is this an example of a characteristic of life?

  • This is an example of adaptation
  • This is a response to a stimulus
  • This is the result of reproduction
  • This is an example of homeostasis

13

“Sucrose is a disaccharide, more commonly known as table sugar. From sucrose, two separate monosaccharide sugars are generated, known as glucose and fructose. Through what process does this occur?”

  • “Dehydration synthesis, breaking apart a molecule through the input of water”
  • “Hydrolysis, breaking apart a molecule through the release of water”
  • “Dehydration synthesis, breaking apart a molecule through the release of water”
  • “Hydrolysis, breaking apart a molecule through the input of water”

14

One way atoms can be bonded together to form molecules is through the sharing of electrons. What type of chemical bonding is this?

  • Valence
  • Ionic
  • Saturated
  • Covalent

15

“Earth is composed of 70% water (approximately) and water is the major component of cells. Based on these two facts alone, what are two of the most abundant elements on earth?”

  • Oxygen and calcium
  • Sodium and hydrogen
  • Helium and oxygen
  • Hydrogen and oxygen

16

“Below is an illustration of a cell, with structures labeled 1 through 7. What are the structures labeled by the numbers 3,4, and 6, and what type of cell is this?”

  • “DNA, cell membrane, cell wall; prokaryotic cell”
  • “DNA, cell wall, cell membrane; prokaryotic cell”
  • “RNA, cell membrane, cell wall; prokaryotic cell”
  • “Protein, cell membrane, capsule; eukaryotic cell”

17

“Within ecosystems, producers are considered to be the basis of energy cycling. Why is this?”

  • Producers capture energy from H2O and O2 to produce light energy
  • Producers transform the energy from light into chemical energy
  • Producers capture chemical energy directly from consumers
  • Producers transform chemical energy from the soil into light energy

18

“When a person uses up all available oxygen for muscle cells, what type of cellular respiration occurs?”

  • Alcohol fermentation
  • Lactic acid fermentation
  • Krebs cycle processes
  • Electron transport processes

19

What form of reproduction is likely to increase genetic variation?

  • Spontaneous generation
  • Asexual
  • Sexual
  • Regeneration

20

“What form of reproduction creates genetically identical offspring by a single parent, without the participation of egg and sperm?”

  • Sexual
  • Spontaneous generation
  • Regeneration
  • Asexual

21

Genetic counselors often use karyotyping as a common form of genetic analysis. What can be revealed using a karyotype?

  • Alterations in chromosome number
  • Presence of cancerous genes
  • Points at which crossing over occurs
  • Location of chromosomes in meiosis II

22

What is the primary purpose for chromosomes during cell reproduction?

  • To ensure that DNA is accurately distributed into new cells
  • To ensure that the correct proteins to produce DNA are distributed
  • To ensure that only DNA without mutations are distributed
  • To ensure that most DNA is distributed into new cells

23

The illustration represents which phase of cellular reproduction and for which type of cell?

  • Anaphase in an animal cell
  • Anaphase in a plant cell
  • Metaphase in a gamete
  • Metaphase in an animal cell

24

“One of the checkpoints within the cell cycle, occurs during G2. What is the primary purpose of this particular checkpoint?”

  • To check whether cytokinesis has occurred correctly
  • To ensure accurate DNA replication during the S phase
  • To ensure that the M phase has produced two cells
  • To check whether meiosis has been performed accurately

25

“During one of the phases of interphase the cell is growing, replicating organelles, and is synthesizing the enzymes needed to make copies of its DNA. Which phase of the cell cycle is being described?”

  • The S phase
  • The M phase
  • The G2 phase
  • The G1 phase