Biología
Biología celular, genética, ecología y fundamentos de ciencias de la vida.
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select all that apply select all components of the archaeal cell that w…
B. chromosomal DNA, C. proteins
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multiple choice question what size are archaeal ribosomes? 30s 50s 70s …
C. 70S
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1 multiple choice where does jon krakauer begin the narrative of into t…
1. B. On the summit of Mount Everest 2. "Summit fever" is an irrational, intense drive to reach a mountain summit, overriding safety concerns. It impairs climbers' decision-making…
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multiple choice question structurally, archaella are best described as …
B. flagellum
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multiple choice question as in bacteria, the archaeal ______ determines…
B. cell wall
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which two of the following are functions performed by archaeal pili? pr…
- promoting DNA transfer between cells - adhesion to surfaces
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part d the secondary structure of a protein results from ionic bonds bo…
D. hydrogen bonds
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fill in the blank question the plasma membrane and everything external …
exterior
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fill in the blank question the irregularly shaped region in the cytopla…
nucleoid
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multiple choice question which generally reliable indicator of cell wal…
the Gram stain
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multiple choice question what property is shared by archaeal and bacter…
B. Both have 50S and 30S subunits.
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which of these illustrates the secondary structure of a protein?
The fourth illustration (the one with the coiled and structured segments showing alpha - helices - like and other secondary - structure - like patterns)
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select all that apply select all cell shapes that have been observed am…
A. rods, B. cocci, C. spiral shapes
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multiple choice question which of the following might be found in the a…
cytoskeleton
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select your answer from this list based on the prompt. a. dependent var…
B. theory
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multiple choice question compare the two archaeal membranes illustrated…
B. Membrane A has greater rigidity
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which three of the following are functions of the cell wall common to b…
- conferring stability against osmotic pressure - determining cell shape - forming a permeability barrier
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multiple choice question the surfaces of an archaeal membrane, both int…
C. hydrophilic (assuming the options are labeled as A. hydrophobic, B. neutral, C. hydrophilic)
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what type of bond joins the monomers in a proteins primary structure? o…
peptide (the option labeled "peptide")
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multiple choice question the cell envelope is defined as ______. the pl…
D. the plasma membrane and all layers external to it (Note: Assuming the options are labeled A, B, C, D in order. If the original labeling is different, adjust the identifier acco…
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the scientific method blank. if done correctly does not require replica…
Question 1: cannot prove a hypothesis to be true Question 2: non-renewable resources
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part a proteins are polymers of ______. glycerol amino acids \\(\\ce{ch…
The correct option is the one with "amino acids" (the option labeled with "amino acids" among the given choices).
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gram staining is not used in the study of archaea because ______. archa…
the observed color of cells does not correlate with cell wall structure
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true or false question peptidoglycan is a major component of the cell w…
False
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multiple choice question the archaeal cells in this image have which ce…
C. cocci
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multiple choice question compare the two archaeal membranes illustrated…
A. Membrane B is a more rigid structure.
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select all that apply which three of the following characteristics dist…
- presence of peptidoglycan in cell walls - type of lipid molecules found in plasma membranes - capsules and slime layers found on most cells
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multiple choice question the interior of an archaeal membrane is ______…
C. hydrophobic (assuming the options are labeled A: neutral, B: hydrophilic, C: hydrophobic. If the original options have different labels, adjust accordingly. As per the given op…
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select all reasons that archaea are of interest to scientists. archaea …
- Archaea share features with bacteria and eukaryotes. - Some archaea produce methane, a greenhouse gas. - Some archaea live in extreme environments.
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fill in the blank question the plasma membrane and everything external …
exterior
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ordering question click and drag on elements in order place the events …
1. activation 2. germination 3. outgrowth
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multiple choice question the plasma membranes of bacteria and archaea d…
lipids (the option with "lipids" as the text, so the answer is the option: lipids)
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multiple choice question complexing with calcium dipicolinate and small…
D. chromosome
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select all that apply select all cell shapes that have been observed am…
A. spiral shapes, C. cocci, D. spirochetes, E. rods
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multiple choice question what is the trigger for sporulation? radiation…
B. Nutrient limitation
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which four of the following characteristics are the same for bacteria a…
- inclusions present in the cytoplasm - motility structures are present - 70S ribosomes present in cytoplasm - chromosome is double - stranded DNA
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fill in the blank question the process of endospore formation is called…
sporulation
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nucleic acids - dna or rna. chemically, they are similar. structurally,…
C
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true or false question all archaea are methanogens. true false need hel…
False
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fill in the blank question some bacteria can make a dormant structure, …
endospore
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true or false question during endospore germination, the endospore cell…
True
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bacteria swim by ______. - constantly changing the electrical charges t…
D. spinning the flagellum filament like a propeller
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which two of the following are mechanisms to protect the dna in an endo…
- inserting complexes of calcium - dipicolinic acid between the bases - covering the DNA with small acid - soluble proteins (SASPs)
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select all that apply chemotaxis involves ______. - movement of bacteri…
A. movement of bacteria away from a repellent, C. movement of bacteria toward an attractant
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when endospore - forming bacteria detect nutrient limitation, they ____…
A. initiate endospore development
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mr. a&brus us history impact of ww2 on americans – online text module 1…
1. To increase armed forces size: The US government used a mandatory selective service draft to enlist millions of men, paired with voluntary enlistment campaigns to recruit addit…
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which of the following statements about gliding motility is true? glidi…
B. Gliding motility does not require a cellular appendage.
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bacterial sporulation can be defined as ______. the generation of hypha…
C. the generation of an endospore
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3.6) what metal revolutionized the construction of engines, buildings a…
Steel ### 3.7)
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in most bacteria, the proton motive force powers ______. fimbriae movem…
C. flagella movement
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multiple choice question endospores are defined as ______. - dormant ce…
A. dormant cells formed within a living cell
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multiple choice question\ when a swimming bacterium changes direction, …
B. tumble
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which portion of the flagellum spins during the swimming motion? all th…
The hook and filament
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fill in the blank question movement of a bacterial cell toward an attra…
chemotaxis
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select all that apply which three of the following methods of movement …
B. Swarming, C. Swimming, D. Corkscrew movement
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multiple choice question which type of mobility is smooth and requires …
C. gliding motility
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relative to the cell, the bacterial \boxed{} is a long tubular structur…
flagellum
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multiple choice question most bacterial flagella are powered by ______.…
C. a proton motive force
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rudy and edna deposit $3,000.00 into a savings account which earns 3% i…
$\$3281.42$
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certain enzymatic reactions are constrained in microcompartments becaus…
- the reaction requires a different pH that can be maintained in a microcompartment - the reaction produces a toxic intermediate - the reaction product will be stored until it is …
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a swimming bacterium reorients during a ______. ○ run ○ tumble need hel…
B. tumble
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multiple choice question the approximate dimensions of fimbriae are ___…
D. 3 to 10 nm in diameter and up to several μm long
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multiple choice question bacteria swim by ______. - whipping the flagel…
D. spinning the flagellum filament like a propeller
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select all that apply which two of the following are functions of bacte…
- Locations to sequester enzymatic reactions - Storage sites
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true or false question gliding motility requires the use of external fl…
B. False
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multiple choice question small, double - stranded, circular pieces of d…
A. plasmids
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all living things can be divided into one of three domains. true false
True
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multiple choice question which of the following is the typical motility…
A. Flagella
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multiple choice question the bacterial nucleoid is composed of ______. …
C. protein and DNA
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the cytoskeleton consists of microtubules, microfilaments, and intermed…
True
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if you found a piece of animal tissue that did not allow fluid to cross…
True
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if you were examining plasmodesmata under a microscope, you would be lo…
True
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endosymbiosis is a theory based on the resemblance of chloroplasts and …
True
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multiple choice question the hundreds of thin, short hair - like projec…
C. pili
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which component of the cell theory argues against life on earth evolvin…
C. All cells come from preexisting cells.
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fill in the blank question the is a structure found in all cells and is…
ribosome
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what type of membrane protein is involved in creating anchoring junctio…
adhesion proteins
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eukaryotic cells are 10-100 times the size of prokaryotic cells. how do…
Organelles keep reactions compartmentalized and concentrated.
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fill in the blank question the bacterial cytoplasmic structures that fu…
inclusion bodies (or bacterial microcompartments, but the most common answer here is "inclusion bodies")
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in a human, the intestines need to form a barrier to prevent bacteria a…
tight junction
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select all that apply which two of the following describes typical plas…
A. double - stranded, C. composed of DNA
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you discover a new life form, and study it under an electron microscope…
A. Bacteria.
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multiple choice question in this image, magnetosomes are indicated by t…
A. A
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what does a pine tree, an octopus, and a bacterium have in common at th…
cellular composition
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multiple choice question the irregularly shaped region of a bacterial c…
D. nucleoid
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the phospholipid bilayer of membranes allows lipids and small, nonpolar…
hydrophobic and selectively permeable.
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multiple choice question organized protein complexes within a cell that…
B. biomolecular condensates
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what is the advantage of a mature red blood cell having a flattened sha…
Maximizes the relative surface area to exchange gasses.
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question 37 1 point products of the rough and smooth endoplasmic reticu…
Golgi apparatus; vesicles
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select all that apply certain enzymatic reactions are constrained in mi…
- the reaction requires a different pH that can be maintained in a microcompartment - a reactant is a gas that could easily pass through a membrane - the reaction produces a toxic…
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what type of microscope would you use if you wanted to examine the ridg…
light microscope
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which of the following bacterial structures is the site of protein synt…
B. Ribosome
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multiple choice question polyphosphate granules are used to store _____…
C. phosphate
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tay - sachs disease is a neurological disorder in which a defective enz…
cellular membranes
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in order for a milk protein to be secreted, it must be moved between or…
A. in spheres of lipid bilayer called vesicles.
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select all that apply which two of the following are functions of bacte…
- Promote energy conservation - Storage sites
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multiple choice question the magnetosomes illustrated here are aligned …
A. cytoskeletal proteins
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7. what would happen to your sentence if you mutated or changed one let…
Mutating one DNA "letter" (a point mutation) can have several outcomes: 1. **Silent mutation:** No change to the resulting protein, because the altered codon still codes for the s…
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multiple choice question small membrane - bound particles that form whe…
D. extracellular vesicles
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to describe the golgi apparatus, it is not an organelle. a processing c…
studded with ribosomes.