QUIZ BEE │ Biology & Earth Science

• The first forms of life on earth are:

  Microorganisms
• Which of the ff sciences : biology,astronomy,physics,computer science is not considered as natural science?

  Computer Science
• The Smallest unit of biological structure that meets the functional requirements of “living” is the:

  Organ

  Organelle

  Cell

  Macromolecule

  Cell
• Viruses are not considered living because ?

  a.are not made of cells

  c. do not contain DNA or RNA

  b. lack cell nuclei

  d. cannot reproduce

  a
• The presence of a membrane-enclosed organelle is a characteristic of?

  Prokaryotic Cells

  Eukaryotic Cells

  Living Organisms

  Bacteria

  Eukaryotic Cells
• A group of individuals of the same species living in the same area is an?

  Family

  Community

  Population

  Ecosystem

  Population
• Which of the following sequences represents the hierarchy of biological organization from the most inclusive to the least complex level?

  a organelle, tissue, biosphere, ecosystem, population

  b organism, organ, tissue, organelle, molecule

  c organism, community, biosphere, molecule, tissue, organ

  d biosphere, ecosystem, community, population, organism

  D.
• Proteins

  Peptide Bonds
• Carbohydrate

  Glycosidic bonds
• Nucleic Acid

  Phosphodiester bond
• Lipids

  ester bonds
• Dehydration synthesis leads to formation of?

  Monomers

  Polymers

  Water and Polymers

  Polymers
• During breakdown of polymers, which of the ff. reactions takes place?

  Hydrolysis

  Dehydration

  Condensation

  Covalent Bond

  Hydrolysis
• An example of monosaccharide:

  Galactose, Glucose, Fructose
• Cellulose and starch is an example of?

  Polysaccharides
• Plant cell walls contains which of the ff in abundance?

  starch

  cellulose

  glycogen

  lactose

  cellulose
• Lactose is a _______ formed by formation of _________ bond between glucose and ________.

  disaccharide, glycosidic, galactose
• Saturated fats have all of the following characteristics except

  1. they are solid at room temperature.
  2. they have single bonds within the carbon chain.
  3. they are usually obtained from animal sources.
  4. they tend to dissolve in water easily.

  4
• Phosphalipids are important components of

  1.the plasma membrane of animal cells

  2. the ring structure of steroids

  3. the waxy covering on leaves

  4.the double bond in hydrocarbon chains

  1
• The monomers that make up proteins are called:

  1. nucleotides
  2. disaccharides
  3. amino acids
  4. chaperones

  3
• The a helix and the b -pleated sheet are part of which protein structure?

  1. primary
  2. secondary
  3. tertiary
  4. quaternary

  2
• A nucleotide of DNA may contain:

  1. ribose, uracil, and a phosphate group
  2. deoxyribose, uracil, and a phosphate group
  3. deoxyribose, thymine, and a phosphate group
  4. ribose, thymine, and a phosphate group

  3
• building blocks of nucleic acids are

  1. sugars
  2. nitrogenous bases
  3. peptides
  4. nucleotides

  4
• basic unit of life

  organism

  cell

  tissue

  organ

  cell
• Prokaryotes depends on _____, to obtain materials and to get rid of wastes.

  ribosomes

  flagella

  cell division

  diffusion

  diffusion
• Bacteria that lack fimbrae are less likely to

  1 adhere to cell surfaces

  2. retain the ability to divide

  1
• Which of the following is surrounded by two phospholipid bilayers?

  1 the cytoplasm

  2 the ribosomes

  3 the nucleoplasm

  3
• Peroxisomes got their name because __________ is

  1.hydrogen peroxide, used in their detoxification reactions

  2. hydrogen peroxide, produced during their oxidation reactions

  3. hydrogen peroxide, incorporated into their membranes

  4. hydrogen peroxide, a cofactor for the organelles' enzymes.

  1
• In plant cells, the function of the lysosomes is carried out by

  a.vacuoles

  c. ribosomes

  b. peroxisomes

  d. nuclei

  a
• Which of the following is found both in eukaryotic and prokaryotic cells?a.nucleus

  c. vacuole

  b. mitochondrion

  d. ribosomes

  d
• Which of the following is not a component of the endomembrane system?

  a.mitochondrion

  c. endoplasmic reticulum

  b. Golgi apparatus

  d. lysosome

  a
• The process by which a cell engulfs a foreign particle is known as

  a.endosymbiosis

  b.hydrolysis

  c. phagocytosis

  d. membrane synthesis

  c
• Which of the following is most likely to have the greatest concentration of smooth endo-plasmic reticulum?

  1. a cell that secretes enzymes
  2. a cell that destroys pathogens
  3. a cell that makes steroid hormones
  4. a cell that engages in photosynthesis

  3
• Which of the following sequences correctly lists in order the steps involved in the processing of a proteinaceous molecule within a cell?

  1. synthesis of the protein on the lysosome; tagging in the Golgi; packaging in the vesicle; distribution in the endoplasmic reticulum
  2. synthesis of the protein on the ribosome; modification in the endoplasmic reticulum: tagging in the Golgi; distribution via the vesicle
  3. synthesis of the protein on the lysosome; packaging in the vesicle; distribution via the Golgi; tagging in the endoplasmic reticulum

  2
• Which of the following have the ability to disassemble and reform quickly?

  1. microfilaments and intermediate filaments
  2. microfilaments and microtubules
  3. intermediate filaments and microtubules
  4. only intermediate filaments

  2
• Which of the following do not play a role in intracellular movement?

  1. microfilaments and intermediate filaments
  2. microfilaments and microtubules
  3. Intermediate filaments and microtubules
  4. only intermediate filaments

  4
• plasma membrane component that can be found on its surface or embedded in membrane structure?

  protein

  cholesterol

  carbohydrate

  phospholipid

  protein
• characteristics of a phospholipid that contributed to fluidity of membrane?

  head

  cholesterol

  saturated fatty acid tail

  double bonds in fatty acid tail

  double bonds in fatty acid tail
• function of carbohydrate attached to exterior of cell membrane?

  identification of cell

  flexibility of membrane

  strengthening the membranr

  channels through membrane

  identification of cell
• water moves via osmosis _______

  cytopladm

  area with high to low concentration of water

  area with low to high concentration of water

  area with high to low concentration of water