PCB 3023 Exam 1 Gift questions with
complete solutions graded A+
Which of the following isolates a cell from its environment? - correct answer Phospholipid Bilayer aka
Plasma Membrane
How did eukaryotes solve the problem of [REDACTED]? - correct answer Digestive enzymes from
digesting everything in the cell.... Compartmentalization
Everything being able to enter and exit the cell.... Biochemical scaffold and selective permeability
small surface area to volume ratio..... by compartmentalizing functions into organelles
[REDACTED] signals come from [REDACTED] cell. - correct answer Exogenous signals come from the
exterior of the cell
Endogenous signals come from the interior of the cell need
From the list below select all the ways that the microbiome is beneficial to humans. - correct answer
Aid in digestion.
Produce Cofactor, Vitamins
Block Pathogenesis
What of the following is provided by the [REDACTED] of a cell? (Select all that apply) - correct answer
Membrane: protection, semi-permeability, diffusion
Apical membrane: regulation of water intake, regulated secretion, protection
Lateral membrane: cell communication, cell contact and adhesion
Basal membrane: cell substratum contact, generating ion gradients
Match the characteristic with the cell type that possesses it: - correct answer Eukaryote: nucleus,
complex chromosomes, organelles, cytoskeleton, phagocytosis, diploidy, sexual reproduction
Both: Plasma membrane, genetic code, ribosomes, metabolism, ATP synthesis, photosynthesis,
proteasomes, cell walls, cytoskeletal filaments cchd
Prokaryotes: No discrete nucleus, binary fission, most abundant on earth
, What is required for a cell to be classified as a [REDACTED]? - correct answer Eukaryote: membrane
bound nucleus, complex chromosomes, organelles, cytoskeleton, phagocytosis, diploidy, sexual
reproduction
Cell: complex, has a genetic program, derive from cells, needs and uses energy, responds to stimuli,
self regulation, carry out chemical reactions
Why, in a general fundamental sense, do all cells need [REDACTED]? - correct answer Plasma
membrane: to protect from outside environment and aid in diffusion
Ribosomes: transcription and translation
Genetic code: to be able to do metabolic processes and survive
To be small: to make sure diffusion rates are high, control gene transcription, ideal of material
exchange with environment
Which of the following is the primary [REDACTED] of Earth's ecosystem? - correct answer Energy
source: the sun
Life component: a cell
Which method of cell division produces [REDACTED] ? - correct answer Mitosis: 2 diploid daughter
cells, chromosome number remains the same,
Meiosis: 4 haploid daughter cells, chromosome number is halved, 2 back to back cycles of mitosis,
can produce recombinant chromosomes
What is the method of the cellular division [REDACTED] ? - correct answer Bacteria and archaea go
through binary fission to carry out cell division
To which of the following tenets of cell theory do viruses [REDACTED] - correct answer Tenant 1. All
living organisms are composed of one or more cells.... Viruses not made of cells
Tenant 2. The cell is the structural unit of life.
Tenant 3. Cells can only arise from preexisting cells... Viruses can replicate via a host.
Which of the following [REDACTED] model organism? - correct answer E.coli: bacteria
S. cerevisiae: yeast
A. thaliana: flower
C elegans: worm
complete solutions graded A+
Which of the following isolates a cell from its environment? - correct answer Phospholipid Bilayer aka
Plasma Membrane
How did eukaryotes solve the problem of [REDACTED]? - correct answer Digestive enzymes from
digesting everything in the cell.... Compartmentalization
Everything being able to enter and exit the cell.... Biochemical scaffold and selective permeability
small surface area to volume ratio..... by compartmentalizing functions into organelles
[REDACTED] signals come from [REDACTED] cell. - correct answer Exogenous signals come from the
exterior of the cell
Endogenous signals come from the interior of the cell need
From the list below select all the ways that the microbiome is beneficial to humans. - correct answer
Aid in digestion.
Produce Cofactor, Vitamins
Block Pathogenesis
What of the following is provided by the [REDACTED] of a cell? (Select all that apply) - correct answer
Membrane: protection, semi-permeability, diffusion
Apical membrane: regulation of water intake, regulated secretion, protection
Lateral membrane: cell communication, cell contact and adhesion
Basal membrane: cell substratum contact, generating ion gradients
Match the characteristic with the cell type that possesses it: - correct answer Eukaryote: nucleus,
complex chromosomes, organelles, cytoskeleton, phagocytosis, diploidy, sexual reproduction
Both: Plasma membrane, genetic code, ribosomes, metabolism, ATP synthesis, photosynthesis,
proteasomes, cell walls, cytoskeletal filaments cchd
Prokaryotes: No discrete nucleus, binary fission, most abundant on earth
, What is required for a cell to be classified as a [REDACTED]? - correct answer Eukaryote: membrane
bound nucleus, complex chromosomes, organelles, cytoskeleton, phagocytosis, diploidy, sexual
reproduction
Cell: complex, has a genetic program, derive from cells, needs and uses energy, responds to stimuli,
self regulation, carry out chemical reactions
Why, in a general fundamental sense, do all cells need [REDACTED]? - correct answer Plasma
membrane: to protect from outside environment and aid in diffusion
Ribosomes: transcription and translation
Genetic code: to be able to do metabolic processes and survive
To be small: to make sure diffusion rates are high, control gene transcription, ideal of material
exchange with environment
Which of the following is the primary [REDACTED] of Earth's ecosystem? - correct answer Energy
source: the sun
Life component: a cell
Which method of cell division produces [REDACTED] ? - correct answer Mitosis: 2 diploid daughter
cells, chromosome number remains the same,
Meiosis: 4 haploid daughter cells, chromosome number is halved, 2 back to back cycles of mitosis,
can produce recombinant chromosomes
What is the method of the cellular division [REDACTED] ? - correct answer Bacteria and archaea go
through binary fission to carry out cell division
To which of the following tenets of cell theory do viruses [REDACTED] - correct answer Tenant 1. All
living organisms are composed of one or more cells.... Viruses not made of cells
Tenant 2. The cell is the structural unit of life.
Tenant 3. Cells can only arise from preexisting cells... Viruses can replicate via a host.
Which of the following [REDACTED] model organism? - correct answer E.coli: bacteria
S. cerevisiae: yeast
A. thaliana: flower
C elegans: worm
