Biologie
Biologie cellulaire, génétique, écologie et bases des sciences de la vie.
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what does the shape of dna resemble? twisted ladder rod tube
A. twisted ladder
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what direction do the dna strands run? antiparallel perpendicular paral…
Antiparallel
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what is the primary structure of dna? pleated sheet single helix double…
double helix (the option labeled "double helix")
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if one strand of dna runs from 5 to 3, what direction will the correspo…
3' to 5' (the option with text "3' to 5'")
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schools also censor by prohibiting some articles to be printed in stude…
To present evidence about censorship in school newspapers.
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what five - carbon sugar is a part of the dna backbone? options: deoxyr…
A. deoxyribose
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6. meiosis produces (choose all that apply) * □ 2 identical daughter ce…
4 similar but unique cells, gametes, sex cells, ova
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5. when alleles are swapped on sister chromatids of homologous pairs. (…
Crossing over, Increase in genetic diversity, Prophase 1
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a karyotype: (choose all that apply) * organized image of an organisms …
Organized image of an organism's chromosomes, Can be used to determine the gender of an organism, Can be used to identify certain chromosomal abnormalities that are based on chrom…
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name: ______________________ date: ____________ passive and active tran…
To fill the Venn diagram: ### Simple Diffusion (only): - Directly through membrane - Osmosis ### Simple Diffusion ∩ Facilitated Diffusion (overlap): - No energy - High to low - Co…
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which of the following is true? (choose all that apply) * - cells divid…
Cells divide and create two similar daughter cells., Cells spend most of their time in interphase.
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which factors can lead to cellular differentiation? * genetics environm…
D. All of the above
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compared to small cells, large cells have more trouble * dividing. prod…
dividing.
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somatic cells are: (choose all that apply) * produced during mitosis pr…
produced during mitosis, diploid, identical, body cells
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exploitation of labour: you are to investigate the exploitation of labo…
Social Science - History
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which of the following describe an interaction where an organism of one…
parasitic relationship
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which of the following are symbiotic relationships? select all that app…
All three options are correct.
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review the science textbook excerpt and then answer the question. genes…
The writer uses straightforward language to explain an experiment about gene selection.
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read the science textbook excerpt and then answer the question. genes a…
biology students
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who was credited for finding the shape of dna? hershey and chase oswald…
D. Watson and Crick (assuming the last option is D, with the option text "Watson and Crick")
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exploitation of labour: you are to investigate the exploitation of labo…
Social Science - History
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what happened when griffith mixed heat - killed bacteria with the live …
The harmless bacteria caused pneumonia.
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infect e. coli remove e. coli check phage for tags what material did he…
A. DNA
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watson and crick knew which base pairs paired together. what are the co…
D. A - T and C - G (assuming the last option is labeled D, if the options are labeled as per the order: first option A, second B, third C, fourth D)
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rough strain nonvirulent smooth strain virulent heat-killed smooth stra…
A. to test the effects of mixing strains
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what do biologists call a virus that infects bacteria? a bacteriophage …
a bacteriophage (the option with text "a bacteriophage")
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which of the following is a term that describes any interaction between…
commensal relationship, mutualistic relationship, parasitic relationship, symbiotic relationship
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which of the following are symbiotic relationships? select all that app…
All the given options are correct.
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review the social studies textbook excerpt and then answer the question…
The writer assumes the reader is already familiar with Revere's midnight ride
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read the social studies textbook excerpt and then answer the question. …
readers with a basic knowledge of the Revolutionary War
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which of the following describe an interaction where an organism of one…
parasitic relationship
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which of the following is a term that describes any interaction between…
commensal relationship, mutualistic relationship, parasitic relationship, symbiotic relationship
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read the passage. then answer the question. a barn swallow preens, or g…
commensal
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read the passage. then answer the question. cleaner wrasse are small fi…
mutualistic
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read the passage. then answer the question. pseudoscorpions are small a…
commensal
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sickle cell anemia is the result of a type of mutation in the gene that…
This is a point (missense) mutation. A single base change in the DNA sequence (\(CTC ightarrow CAC\)) causes a change in the mRNA codon (\(GAG ightarrow GUG\)) and results in the …
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read the passage. then answer the question. guinea worms are a type of …
parasitic
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read the website excerpt and then answer the question. you may think of…
financially secure Americans
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read the passage. then answer the question. a goby and an alpheid shrim…
mutualistic
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which phase of meiosis is shown in the picture? telophase 1; anaphase 2…
telophase 2
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5. why is dna important? 6. describe what a nucleotide is: 7. describe …
5. It carries genetic instructions for growth, function, and reproduction. 6. The basic building block of DNA/RNA, with sugar, phosphate, and base. 7. Double helix (twisted ladder…
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which evidence shows that the endosymbiotic relationship with mitochond…
B. Mitochondria are found in all animal and plant cells.
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mitochondrial dna fission segregation mitochondrial cell how do mitocho…
A. replicating DNA and dividing into daughter organelles
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which of the following happens during interphase? includes growth of th…
all of the above
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cellulose (10-4) (1-4) units of cellobiose (1-4) disaccharide d-glucose…
wood (from the option "wood")
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plant cell wall structure middle lamella pectin primary cell wall cross…
C. peptidoglycan (assuming the options are labeled A: actin, B: amylose, C: peptidoglycan; adjust identifier if needed)
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what light color does chlorophyll reflect? orange green red
B. green (assuming the options are labeled with identifiers, but based on the content, the correct option is the one with "green")
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matter from the producer continues to move up the food chain as consume…
Matter first moves to a consumer when the phytoplankton is eaten by the bristle worm. Matter reaches the top of this food chain when the bull shark is at the top.
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what is the membrane that provides a network for the exchange of materi…
B. Lamella
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which ion that is part of urine formation relies on active transport to…
B. sodium ($\text{Na}^+$)
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an example of a hypertonic solution is corn syrup. hypotonic hypo means…
A. hypotonic
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the image on the left is called \image 1\, and the image on the right i…
Image 1 is meiosis with genetically different daughter cells produced, while image 2 is mitosis with genetically identical daughter cells produced.
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hypertonic hyper means \above\ as in \above strength\ in a hypertonic s…
B. isotonic
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facilitated diffusion is a process that occurs in plant and animal cell…
The movement is from a high concentration to a lower concentration
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why does diffusion not require any energy? because particles are always…
A. because particles are always in motion, so movement occurs naturally
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pop quiz answer the following question(s) to test your knowledge. what …
B. If absolutely no other alternative exists, it is better to hit another vehicle or object than a human being
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glycoprotein: protein with carbohydrate attached glycolipid: lipid with…
B. cell membrane
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a producer is the organism at the base, or beginning, of a food chain. …
Matter moves from prey to a predator when the bristle worm is eaten by the silver perch. Matter moves closer to the top of this food chain when another predator, the bottlenose do…
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this image represents what phase of mitosis? prophase telophase metapha…
metaphase
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what purpose does the cell membrane have in the cell? generate atp prov…
B. provide protection to the cell (assuming the middle option is labeled B; if the options are unlabeled by identifier, the middle option "provide protection to the cell")
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below is a food chain from chesapeake bay, an estuary ecosystem in mary…
phytoplankton
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how do lysosomes contribute to overall cellular health? keeping the nuc…
B. assisting white blood cells
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what is one type of organic compound that is broken down by lysosomes? …
B. lipids
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which is not a reactant for photosynthesis? carbon dioxide oxygen light…
oxygen
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all of the matter in a food chain comes from the producer. many produce…
The first blank is filled with *common shrew* and the second blank is filled with *slender wheatgrass*.
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why are mitochondria sometimes called the powerhouse of cells? mitochon…
The option "They are the site of cellular respiration." (the third option in the list)
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lactic acid fermentation is anaerobic. this occurs when our body switch…
a buildup of lactic acid
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gametes are dealt with during meiosis mitosis
meiosis
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what is the main role of rough er? protein synthesis production of atp …
protein synthesis (the option labeled "protein synthesis")
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what organelle works with the er to process proteins? lysosome golgi ap…
B. Golgi apparatus
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practice: dna structure and replication 1. label each part of the model…
1. Phosphate group, deoxyribose sugar, nitrogen base pairs (A-T, G-C) 2. DNA (deoxyribonucleic acid) 3. Stores genetic information 4. Cytoplasm (nucleoid region) 5. Nucleus (and m…
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which of the following happens during telophase? select all correct opt…
spindle breaks apart, nuclear envelope reforms, nucleolus becomes visible in each daughter nucleus
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what is one situation that the nucleus enables cells to adapt to? cell …
C. environmental conditions (assuming the options are labeled as A. cell death, B. absence of oxygen, C. environmental conditions)
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what type of rna is joined with proteins to form ribosomes? trna rrna m…
The correct option (assuming the middle option is rRNA, e.g., if options are tRNA, rRNA, mRNA: B. rRNA)
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what kind of cell is referred to by the term \true nucleus\? algae euka…
B. eukaryotic
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consider the following research topic: protecting endangered manatees w…
"Wildlife Officials Fight to Save Florida's Beloved Manatees from Starvation"
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what is the main function of the vacuole in plant cells? aids in photos…
D. store large amount of water
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consider the following research topic: protecting endangered manatees w…
"Wildlife Officials Fight to Save Florida's Beloved Manatees from Starvation"
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eukaryotic cell nucleus mitochondria cell membrane cytoplasm prokaryoti…
B. Ribosomes (assuming the second option is Ribosomes as per the context of the question about structures in both cell types)
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round bacteria is shown above. which of the following describes the sha…
A. cocci
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near - infrared waves, a type of infrared wave with wavelengths close t…
The unhealthy plant reflects about 40% of near - infrared waves and about 30% of visible light. The unhealthy plant reflects less near - infrared waves than the healthy plant.
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if something is only able to grow, respond to the environment, and meta…
A. It is considered alive.
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which of the following best describes the characteristic of life known …
maintaining a stable inner condition
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why did the host cell possibly allow mitochondria and chloroplasts to s…
A. they were beneficial to the host cell
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which organelle is believed to have evolved through an endosymbiotic re…
A. Mitochondria
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what key feature indicates that mitochondria and chloroplasts were once…
A. They have their own DNA
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how do ribosomes demonstrate a prokaryotic origin for mitochondria and …
The correct option is: They retained the machinery for protein synthesis.
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post-test all of the following are true about nitrogen plastic welders …
A. They are more likely to burn the plastic than hot air plastic welders.
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according to endosymbiotic theory, how did eukaryotes acquire photosynt…
B. engulfing a photosynthetic prokaryote (assuming the options are labeled A, B, C with A: engulfing a fungal cell, B: engulfing a photosynthetic prokaryote, C: engulfing a hetero…
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according to the theory of endosymbiosis, a mitochondria or chloroplast…
A. because the structures benefited the cell
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16. match the terms with the definitions. sports safety protocols commu…
communication - the act of sending or exchanging information sports safety protocols - sets of standards, practices, and rules players and managers must follow to reduce the risk …
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the movement of the progress bar may be uneven because questions can be…
D. Synergy is a noun that means "combined action or operation." (assuming the options are labeled A, B, C, D in order, with the last option being D)
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the movement of the progress bar may be uneven because questions can be…
B. requiring
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scientists use near - infrared waves, a type of infrared wave with wave…
The healthy plant reflects about \(50\%\) of near - infrared waves and about \(8\%\) of visible light. The healthy plant reflects more near - infrared waves than the unhealthy pla…
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equation $y_1 = x^2$ $y_2 = 3x^2$ $y_3 = 7x^2$ changes to parent graph …
6. narrow vertically 7. widen vertically 8. Parabola with vertex (-3,-4), opening upward 9. Parabola with vertex (0,5), opening downward *(Note: For sketching, plot the vertex fir…
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what type of cells have cell walls besides plant cells? viruses and pha…
B. fungi and bacteria
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2. choose the best answer. what is an interview a company, celebrity, o…
B. a press conference
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which statement most likely explains the pattern of transmission rates …
3) Warmer weather during these months supports the growth and development of infective lungworms.
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plant cell wall structure pectin cross-linking glycan cellulose microfi…
C. communicating between tissues (assuming the third option is labeled C; if the original options had different labels, adjust accordingly. Based on the given options, the correct…
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plant cell wall structure pectin cross - linking glycan cellulose micro…
cellulose (the option with "cellulose" text, likely the third option in the list)