Biologie
Biologie cellulaire, génétique, écologie et bases des sciences de la vie.
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which of the following features explains why plant cells do not explode…
Plant cells have a cell wall that prevents the cell from absorbing too much water.
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you decide to try your hand at canning pickles. you immerse freshly - p…
pickles in a hypertonic solution losing water through osmosis
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question 1 which of the following situations represents released energy…
A. 1 only
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question 1 cellular respiration involves the breakdown of food molecule…
Carbon dioxide and water
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imagine an experiment is done to replace all of the cysteines in chain …
The tertiary structure of the protein would likely be altered. The primary structure of the protein would be altered.
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if you are shipwrecked, it is not a good idea to drink seawater because…
seawater is hypertonic to the body's cells and tissues, therefore, the cells will lose water through osmosis, making you even more thirsty
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animals also make polysaccharides. excess sugar in animals is stored as…
Blood sugar levels decrease when glycogen is used to make glucose. Glycogen provides energy for muscle contraction. Excess sugar is stored as glycogen.
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the diagram below represents a protein molecule called proinsulin, whic…
A. tertiary
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what is the role of myelin in nerve tissue? insulate axons and speed up…
Insulate axons and speed up nerve impulse transmission
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the structure of human hemoglobin is shown below. it has four polypepti…
B. This protein shows tertiary structure C. This protein shows quaternary structure D. This protein shows secondary structure
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question① how are combustion and cellular respiration similar? answer a…
At the end of both chemical reactions, carbon dioxide and water are produced.
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what do potatoes, pasta, bread, beans, and bananas have in common? they…
Carbohydrates are large carbon - based molecules. Cell structures may be built from carbohydrates.
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question 1 imagine that you synthesize a molecule that resembles the su…
It will inhibit the reaction.
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what levels of protein structure are represented in this image? select …
A. Tertiary structure D. Secondary structure
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question 1 genetics plays a role in how fast different people can \burn…
Different people inherit different versions of the same metabolic enzymes.
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question why are enzymes so critical to cell functioning? answer enzyme…
Enzymes enable and regulate cellular reactions
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question 1 for what purpose(s) might a cell transport materials across …
To import nutrients, to get rid of wastes, or to secrete proteins
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review the claim and the two pieces of evidence. food tastes better to …
Evidence B does not directly support the claim. It does not discuss whether food tastes better when it is presented in a more attractive way.
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question ① ______ molecules generally can pass directly through the pla…
C. Hydrophobic; hydrophilic
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why do many health care facilities prohibit the use of brightly colored…
B. It can hide the presence of dirt under fingernails.
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question which of the following situations represents released energy: …
D. 1 only
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transmit signals away from the cell body support and protect the neuron…
Transmit signals away from the cell body
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ellies soccer team has a tournament this weekend, and she is hosting a …
$4\frac{2}{3}$
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question 1 which type of passive diffusion is involved in ion transport…
Facilitated diffusion
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glucose monomers linked together. these long chains of glucose form man…
Glycogen provides energy for muscle contraction. Excess sugar is stored as glycogen.
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which type of tissue contains goblet cells? columnar kertinized cuboida…
columnar
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question 1 the region on an enzyme where a substrate binds is called th…
D. active site
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8. (a) how would the food web in figure 10 change if the red fox were k…
(a) The predation pressure on rabbit, mouse and squirrel would decrease. The food web would have one less predator. (b) Rabbit, mouse, squirrel. (c) Grasses, berries, tree seeds, …
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name: porifera cloze reading #1: basics & functions phylum ____________…
Phylum: Porifera Meaning: Pore - bearing Pores: Ostia Cluster: Colony Body shape: Asymmetry Cell layers: Diploblasts Not: Protostomes, Deuterostomes Lack: Organs, Tissues Found: F…
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which tissue type is responsible for communication between different pa…
Nervous tissue
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question 1 the induced fit model of enzyme catalysis states that answer…
the active site of the enzyme changes shape after substrate binds to it
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question how do enzymes affect activation energy? answer enzymes raise …
Enzymes lower the amount of energy required to activate a chemical reaction.
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question the energy stored in atp (adenosine triphosphate) can drive ce…
a phosphate group is transferred from ATP to another molecule
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what is the primary function of epithelial tissue? contraction lining s…
Lining surfaces and secretion
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question how do enzyme inhibitors work? answer they bind to an enzyme, …
They bind to an enzyme, which alters the active site so a substrate cannot bind.
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question put the following steps of atp phosphate transfer in the corre…
1. ATP energizes a molecule in a cell 2. ATP transfers a phosphate group to a protein 3. A protein changes shape 4. ATP enables transport of ions across cell membrane So the corre…
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adipose tissue, dense regular connective tissue, loose connective tissu…
Dense regular connective tissue
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in a group of pea plants, some individuals have green pods and others h…
1. Change "heterozygous" to "homozygous". 2. Change "yellow pods" to "DD". 3. No change for "This pea plant's genotype for the pod - color gene is DD."
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which epithelial tissue is best suited for areas subject to abrasion, s…
Stratified squamous epithelium
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this passage describes the huntingtons disease trait in humans: hunting…
- "homozygous" should be "heterozygous" - "does not have" should be "has"
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the world in 1750: article 1. why does this course begin in the year 17…
1. It may mark the onset of major global changes like the early Industrial Revolution or shifts in trade and geopolitics. 2. Developed by various historians; its reliability is de…
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select the linking verb and the predicate noun or predicate adjective. …
Linking verb: look; Predicate adjective: nearly the same
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which connective tissue has a primarily parallel arrangement of collage…
Dense regular connective tissue
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in a group of guinea pigs, some individuals have brown eyes and others …
1. Change "red eyes" to "Ee". 2. No change needed. 3. Change "homozygous" to "heterozygous".
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which type of connective tissue is responsible for cushioning and insul…
Adipose tissue
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sort the amino acid structures into the correct column by dragging and …
Amino acids with acidic R groups (proton donors): Amino acids with R - groups containing carboxylic acid groups like the one with a terminal $-COOH$ in the R - chain. Amino acids …
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which part of a neuron receives signals from other neurons? axon dendri…
Dendrites
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in a group of muskmelon plants, some individuals have sour fruit and ot…
- This muskmelon plant’s phenotype for the fruit taste gene is $ff$. (Incorrect, should be "This muskmelon plant’s genotype for the fruit taste gene is $ff$") - This muskmelon pla…
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this passage describes the iridescent scales trait in bettas: a betta, …
homozygous
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in a group of deer mice, some individuals have a hairy body and others …
heterozygous
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this passage describes the ground spot color trait in watermelon plants…
homozygous
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in a group of cows, some individuals have horns and others do not. in t…
homozygous
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which structure? using the vocabulary discussed in this resource, write…
1. Spicules 2. Osculum 3. Ostia 4. Mesohyl 5. Choanocytes 6. Collagen 7. Amoebocytes 8. Egg cells 9. Holdfast 10. Sclerocytes 11. Choanocytes 12. Osculum 13. Mesohyl 14. Archaeocy…
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sort the amino acid structures into the correct column by dragging and …
Without specific names or detailed analysis of each structure's R - group here, in general, amino acids like aspartic acid and glutamic acid have acidic R - groups (they have addi…
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the marine stewardship council (msc) certification program has been wid…
Implement catch restrictions such as the size of catches. Mandate stakeholder feedback only after laws are enacted. Mandate regular monitoring and reporting of fishing activities …
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what is the matrix of connective tissue primarily composed of? nerve fi…
Ground substance and fibers
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sort the amino acid structures into the correct column by dragging and …
Without specific names of the amino - acids from the structures provided (since they are just in structural formula form), we can't give exact names. But in general, amino acids l…
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the diagram below represents a protein with two types of amino acids: o…
The yellow amino acids are nonpolar.
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which type of sentence is this? at the beginning of the revolutionary w…
compound - complex
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the image below shows the structure of four amino acids. which one has …
alanine
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the structures of four different amino acids are shown below. which ami…
B. Alanine
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the chemical formulas for two amino acids are shown below. which of the…
The R groups of these amino acids contain nonpolar covalent bonds.
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the chemicals dtt and beta - mercaptoethanol break disulfide bonds. a s…
C. tertiary structure
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1. how do the choanocytes, ostia, porocytes, amoebocytes, and osculum w…
1. Porocytes form ostia for water entry. Choanocytes create water current and trap food. Amoebocytes distribute nutrients. Osculum is the water - exit point. 2. Sheet of cells: Ch…
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hold tertiary structure together. drag and drop the correct label to ea…
From top - left to bottom: Hydrophobic interactions, Hydrogen bond, Disulfide bond, Ionic bond
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5. what trophic level contains the greatest biomass in most ecosystems?…
The first trophic level (producers) contains the greatest biomass in most ecosystems because they are the energy - capturing base of the food - chain and energy transfer between t…
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peptide bonds connect amino acids to each other and are the main bond t…
primary
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what is the function of goblet cells found in some epithelial tissues? …
Secrete mucus
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refer to the figure. which of the following is true regarding the label…
Parts W and Z are hydrophilic.
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what is the role of collagen fibers in connective tissue? provide stren…
Provide strength and support, allow for elasticity
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peptide bonds connect amino acids to each other and are the main bond t…
The amino group of one amino acid and the carboxyl group of the adjacent amino acid
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4. as you go up from one trophic level to the next, the amount of avail…
Energy is lost as heat during respiration, used for life - processes, and is present in undigested waste.
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biomolecules-protein structure and function 51.00 points possible|due t…
All the $-CO - NH-$ regions in the polypeptide chain should be selected.
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met-ala-cys-his-ala-pro-met-ala-phe-cys imagine you have an altered ver…
C. Both primary and tertiary structure
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which statement about the relationship between enlightenment philosophe…
C. Enlightenment philosophers advocated government systems that protected the natural rights of man, whereas Filmer argued that people would be lost without the paternal monarch.
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you are working with a single polypeptide chain in the laboratory to de…
Changing the pH affected the secondary structure by changing hydrogen bonding between nearby amino acids. Changing the pH affected the tertiary structure by changing hydrogen bond…
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1. what is meant by the term ecological niche? describe the ecological …
An ecological niche is the role and position of a species in its environment. Human niche: omnivores, tool - users, environment - modifiers. Panda: herbivore, bamboo - eater in mo…
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ras is an important protein involved in cell growth. certain cancers co…
The altered form of Ras may interact with different cellular proteins than the normal form of Ras. The altered form of Ras could show changes in all levels of protein structure (p…
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changes in environment, such as increased heat and ph changes, can dena…
D. Secondary, tertiary, and quaternary
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by dragging and dropping, sort the statements below into the correct co…
Primary Structure: Order and sequence of amino acids, Unaffected by denaturing conditions Secondary Structure: Alpha helix and beta pleated sheets are examples, Determined by hydr…
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which muscle tissue has intercalated discs? cardiac muscle smooth muscl…
Cardiac muscle
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the structure of an amino acid is shown below. which of the following p…
formation of peptide bonds between amino acids
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41. some scientific tools are used for making observations, and others …
a. hand lens
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this is for the woman with one black wing perched over her eyes: lovely…
It describes the energy that Kahlo brought to her painting.
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below is an image of a generic amino acid. click to highlight the funct…
The amino group ($^+H_3N -$) and the carboxyl group ($-COO^-$) should be highlighted.
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biomolecules - protein structure and function 1.00 points possible | du…
the R group (or side group)
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biomolecules-protein structure and function 51.00 points possible|due t…
To be broken down for energy
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this is for the woman with one black wing perched over her eyes: lovely…
The poem contains 14 lines.
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political change in the long nineteenth century before 1750, government…
The long nineteenth - century (1750 - 1914) saw a shift from elite - rule governments to a system influenced by liberal ideas that emphasized people's self - governance.
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4. as you go up from one trophic level to the next, the amount of avail…
Energy is lost as heat during metabolic activities like respiration, used for organism - related processes, and released as heat during decomposition of undigested organic matter.
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1. gasoline engine imagine a gasoline engine with a power output of 180…
Heat supplied per second: $642857.14\ J/s$, Heat discarded per second: $462857.14\ J/s$ ### 2. Area under the curve
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enzymes in digestion food contains large, complex molecules that cannot…
The body would be unable to break down large, complex food - molecules into smaller, absorbable ones. This would lead to malnutrition, digestive problems, and cells not getting th…
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phosphatidylserine molecules in your body. this molecule can play a rol…
Part 1: A. Only region B. Part 2: A. Only region B.
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of enzymes this graph shows the effects of an enzyme on a particular re…
1. does not 2. lowers
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question 8 1 pts before buying his 12 - year - old daughter her very ow…
how to protect herself against online criminal or unauthorized behavior that may put her, her information, or her assets in jeopardy
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here are some strategies to consider: * remember to break your study se…
I use flowcharts to map out the relationships between different parts of the system, which helps me visualize how they interact. I also look for real - world examples where the sy…
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signal sequence endomembrane system motor protein phosphorylation a col…
Signal sequence - A series of amino acids at the start of a protein that allows that protein to enter the endomembrane system. Endomembrane system - A collection of machines, cyto…
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to make sure you understand the flow of events in the endomembrane syst…
1. mRNA is exported from the nucleus, through a nuclear pore. 2. Protein synthesis (linking amino acids via peptide bonds) begins in a ribosome. 3. A signal sequence on the new pr…
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select the linking verb and the predicate noun or predicate adjective. …
Linking verb: became Predicate noun: the youngest winner of the men's Wimbledon singles tennis tournament
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squid are marine animals and have a huge nerve cell that runs the lengt…
1. C. The vesicles would not be able to move, because kinesin would not attach to them properly. 2. C. ATP runs out so kinesin can't be phosphorylated and can't walk.