生物
细胞生物学、遗传学、生态学与生命科学基础。
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as part of the cell cycle, a cell produces new daughter cells that are …
Cytokinesis
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what is the part labeled b called? nucleotide nitrogen base phosphate g…
5 - carbon sugar
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why did the international olympic committee hold the first modern olymp…
The ancient Olympics were held in Greece.
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what is the part labeled a called? nitrogen base phosphate group nucleo…
phosphate group
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the diagram above shows a strand of dna. the structures labeled y in fi…
nitrogen bases.
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adenine deoxyribose sugar phosphate question 7 what is the sugar in rna…
ribose
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what is label # 3 pointing to? thymine hydrogen bond guanine cytosine a…
deoxyribose sugar
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the labeling of the strands as \old\ and ew\ shows that dna replication…
semiconservative
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question 4 4 pts what is the name of the enzyme that breaks the hydroge…
C. helicase
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what was one major result of the 1905 revolution in russia? o tsar nich…
Russian workers organized into soviets.
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question 3 which statement best describes the dna molecules made from t…
The new DNA molecules are identical to each other and to the original molecule.
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what was a major cause of social unrest in russia in 1900? the russian …
There was a wide gap between the nobility and the peasants.
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why did the columbian exchange lead to an increase in the demand for sk…
A. An abundance of raw materials from the New World needed to be made into finished goods.
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what enzyme reads the nucleotide code and matches the appropriate nucle…
DNA polymerase
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the following dna strand is being replicated: aag-tac-cct what will the…
TTC - ATG - GGA (corresponding to the last option)
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question 6 4 pts according to the drum - buffer - rope system of managi…
when the constraint completed a job and needs work
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the commercial revolution contributed to the age of exploration by: a. …
D. increasing the value of trade between Europe and Asia.
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target writing level: advanced choose a genetic disorder to research an…
Here is an example essay on sickle - cell anemia: **Sickle - Cell Anemia** Sickle - cell anemia is a genetic disorder caused by a mutation in the HBB gene. This mutation leads to …
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jefferson davis which role did this person play in the nations history?…
President of the Confederate States of America
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the organism here belongs in which kingdom? two of these protista fungi…
C. Fungi
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under ladonnas cellular phone plan, she pays $40 a month for unlimited …
A. $64$ B. $0.12$ C. $160$
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how are protists as a group organized by scientists? all protists make …
All protists make up one kingdom within the domain Eukarya.
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the electro magnetic spectrum is just a name that scientists give a bun…
Our skin emits infrared light, which is why we can be seen in the dark by someone using night vision goggles; The greater the frequency, the greater the energy, the more radiation…
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what is an example of a protist? yeast mold all of these algae
Algae
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complete the table to compare the three types of passive transport. sim…
| | simple diffusion | facilitated diffusion | osmosis | |---|---|---|---| | molecules cross the membrane through the phospholipids | $\square$ (yes) | $\square$ (no) | $\square$ …
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what is an example of a protist? amoeba all of these slime mold algae
B. All of these
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how did the commercial revolution contribute to the start of the thirty…
D. It enabled countries to afford large armies.
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this video shows osmosis. select the true statements. osmosis uses cell…
- Water molecules can cross the cell membrane by simple diffusion. - Water molecules move down their concentration gradient. - Water molecules can cross the cell membrane by facil…
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question 2 of 20 which source would offer the most credible information…
A. A peer - reviewed journal article published in February 2002
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what is an example of a fungus? mold all of these yeast mushroom
B. All of these
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which pair of terms are coming from a and b on the diagram? a. nadph, b…
A. chlorophyll, B. ATP
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19. what must you always do if you encounter a person who is not breath…
19. c 20. b 21. b 22. d 23. d 24. d 25. a 26. a 27. c 28. b
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what is the first, most immediate, thing that happens when light strike…
Electrons are energized.
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which part of a leaf contains all the chemicals necessary for photosynt…
chloroplast
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question 8 of 10 deena went to the movies instead of working on her bio…
D. As a result
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which statement correctly describes the fetal development process? the …
To ensure proper growth, a fertilized egg must implant in the wall of the uterus.
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a delivery truck has an internal height of 3 meters, but a clearance of…
\(6\)
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question 4 of 5 what has helped to contribute to the spread of e. coli …
D. The unsanitary conditions in cattle feedlots
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the picture below shows the international space station orbiting earth.…
6. radio waves 7. mirror
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this video shows carbon dioxide crossing the cell membrane by simple di…
At the start of the video, there is a higher concentration of carbon dioxide molecules inside the cell than outside the cell. As carbon dioxide molecules move by simple diffusion,…
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this video shows the simple diffusion of carbon dioxide molecules. the …
- Diffusion is a form of passive transport. - The unassisted diffusion of molecules directly through the phospholipid bilayer is called simple diffusion.
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select the true statements. carbon dioxide, a small nonpolar molecule, …
- Carbon dioxide, a small nonpolar molecule, can freely pass through the lipid bilayer. - The inner core of the lipid bilayer repels polar molecules like water.
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15. what sugar is found in rna? 16. explain why mrna is needed to act a…
15. Ribose 16. DNA is in the nucleus and too large to move to cytoplasm (where proteins are made), mRNA can carry genetic code from nucleus to cytoplasm. 17. Ribosomes 18. Uracil …
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some molecules can cross the cell membrane without using cellular energ…
B. Passive transport does not require energy from the cell. C. Some molecules require cellular energy to cross the cell membrane. D. Cells must maintain a stable internal environm…
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what is a characteristic of total body fat? it includes stored fat in b…
It includes stored fat in body tissue.
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13. what are the two purines? what are the two pyrimidines?
The two purines are adenine and guanine. The two pyrimidines are cytosine and thymine.
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unlike much of the rest of western europe in the 13th century: a. italy…
A. Italy was divided into city - states where middle - class citizens seized power and promoted international exchange.
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speciation, fossilization and sedimentation quiz 7. multiple choice: wh…
- **Question 7**: B. Gaps in sedimentary layers where some rock was eroded or not deposited - **Question 8**: Gaps and unconformities represent missing links or periods in the fos…
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12. in dna, adenine bonds with ________________________ using ____ (#) …
adenine bonds with thymine using 2 hydrogen bonds; guanine bonds with cytosine using 3 hydrogen bonds.
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name the hormone responsible for the following actions: a. stimulates c…
a. Growth hormone (GH) b. Antidiuretic hormone (ADH) c. Parathyroid hormone (PTH) d. Calcitonin e. Oxytocin f. Adrenocorticotropic hormone (ACTH) g. Insulin h. Glucagon
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7 describe the plot of the wizard of oz using the terms exposition, ris…
- **Exposition**: Dorothy lives in Kansas with Toto. A tornado takes them to Oz. - **Rising Action**: Dorothy meets Scarecrow, Tin Man, Cowardly Lion. They seek the Wizard. - **Cl…
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this quote depicts the appearance of an ancient ghanaian king. the king…
Gold was a rare commodity reserved for the king's court and animals.
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if a girl with sickle cell anemia is born to parents who are healthy, a…
- Girl's genotype: \(aa\) - Parents' genotypes: \(Aa\) and \(Aa\) - Genotype \(\%\): \(AA: 25\%\), \(Aa: 50\%\), \(aa: 25\%\) - Phenotype \(\%\): Healthy: \(75\%\), Sickle - cell …
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question 8 of 10 which of the following is the most complete definition…
D. A set of activities done by an organization to satisfy its customers and meet internal goals
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match each location to the stage of cellular respiration that occurs th…
glycolysis - cell's cytosol, citric acid cycle - mitochondrial matrix, electron transport chain - mitochondrial cristae
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complete the table to describe the reactants and products for each stag…
- Glycolysis: glucose - reactant - Citric acid cycle: carbon dioxide, ATP, NADH, FADH₂ - product - Electron transport chain: NADH, FADH₂, oxygen - reactant; water - product
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6. is it possible for two purple flowers to produce a white flower? use…
| Genotypes % | Phenotypes % | |---|---| | FF: 25%, Ff: 50%, ff: 25% | Purple: 75%, White: 25% | Yes, it is possible for two purple flowers (Ff × Ff) to produce a white - flowered…
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understand: cellular respiration complete the statements. • glycolysis …
- Glycolysis takes place in the cytoplasm. - The citric acid cycle takes place in the mitochondrial matrix. - The electron transport chain takes place in the inner mitochondrial m…
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5. two heterozygous plants are crossed. what chance is there that the o…
- Genotypes (\%): \(FF: 25\), \(Ff: 50\), \(ff: 25\) - Phenotypes (\%): Purple: \(75\), White: \(25\)
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4. a white flowered plant is crossed with a plant that is heterozygous …
- Genotypes: \(50\%\ Ff\) and \(50\%\ ff\) - Phenotypes: \(50\%\) purple and \(50\%\) white
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in pea plants purple flowers are dominant, white flowers are recessive.…
The percentage of their offspring that will be white - flowered is \(100\%\).
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which disease is related to a malfunctioning pancreas? o lupus type 2 d…
type 2 diabetes
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punnett square practice tall height in plants is dominant to short heig…
| Genotypes % | Phenotypes % | |---|---| | \(100\%\ Tt\) | \(100\%\ Tall\) |
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describing the structure of dna complete the sentences to describe the …
1. helix 2. sugar (deoxyribose) 3. nitrogenous bases
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eukaryotic chromosome structure: questions 1. where is the dna normally…
4. S - phase 5. Mitosis 6. It is the site of spindle - fiber attachment for chromosome segregation during cell division. 7. Histone acetylation: Acetylation of histones relaxes ch…
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punnett square practice tall height in plants is dominant to short leng…
2. | Genotypes % | Phenotypes % | | --- | --- | | \( 100\%\ Tt \) | \( 100\%\ tall \) | 3. | Genotypes % | Phenotypes % | | --- | --- | | \( 100\%\ ff \) | \( 100\%\ white - flowe…
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recall and write the definition of the review vocabulary term viscosity
Viscosity is the resistance of a fluid (liquid or gas) to flow, which is due to the internal friction between its layers.
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which is one treatment that is recommended for people with sickle cell …
bone marrow transplant
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after a long, long time, the carbon from the remains of dead organisms …
Rocks, Fossil Fuels
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while looking for the fabled cities of gold in cibola and quivira, the …
Francisco Vázquez de Coronado
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how does carbon dioxide get back into the atmosphere? it is released by…
It is released by plants and animals through the process of cellular respiration.
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a spanish conquistador named ______ conquered the aztecs and claimed me…
Hernando Cortéz
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how does an animal get carbon? select all that apply. it eats a plant o…
- It eats a plant or other photosynthetic organism. - It eats another animal that ate a plant.
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an italian explorer named ______ used spanish ships and crews to establ…
Christopher Columbus
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____ was a spanish explorer who charted the gulf coast and may have bee…
Alonso Álvarez de Pineda
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an italian named ____ used spanish ships to explore the coast of south …
Amerigo Vespucci
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7 multiple choice 2 points what is a common way viruses and malware spr…
7. Through email attachments, downloads, or external devices 8. They could be phishing attempts trying to steal your information or install malware 9. It starts with "https" and h…
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when de soto died, ______ headed up the mission, marched over land into…
Luis de Moscoso Alvarado
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the spanish explorer, led and expedition through florida, georgia, nort…
C. Hernando de Soto
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1. choose the best answer. ____ began a nine - year journey of explorat…
Alvar Núñez Cabeza de Vaca
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question #7 examine the diagram. what can be concluded from the diagram…
B. Different genes code for different proteins.
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multiple - choice question we have seen foreshadowing with the mechanic…
Montag is turning against his community.
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study the diagram. based on the diagram, which statement is true? a gen…
- **Question 99**: D. Genes are present on chromosomes and control traits in an individual. - **Question 100**: C. chromosome.
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all of earths places where life exists is called the a biosphere b biom…
A. Biosphere
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worm grunting - also known as worm charming or worm fiddling - is a pra…
A. When vibrations run through the soil, earthworms flee to the surface.
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how are communities and ecosystems different? ecosystems consider the n…
Ecosystems consider the nonliving factors as well as the living things.
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which of the following refers to all the populations in a given area? e…
B. Community
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question #1 why is it difficult to predict most genetic traits in human…
A. Most human traits are controlled by multiple genes and/or multiple alleles.
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88 multiple choice why was the merger of t-mobile and sprint in 2019 a …
A. It would lower competition and could raise prices. C. It would lower competition and could lower the quality of cellular service.
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all the organisms of the same species in the same place are collectivel…
C. population
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a whole living thing is called a(n) ____________. ecosystem population …
organism
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which sentence is punctuated correctly? my father loved talking about h…
When studying mythology, I learned about several gods and goddesses: Zeus, Apollo, Aphrodite, Hermes, and Hercules.
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which of the following is an example of an organ? epithelial tissue bra…
Brain
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a group of cells that are all alike is called a_________. organ system …
Tissue
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francisco de garay commissioned ____ to search the gulf coastline to fi…
Alonso Álvarez de Pineda
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which statement best describes nelson mandela? he was a religious leade…
He was sent to prison on various charges for protesting South Africa's policies of apartheid.
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you can start your response with: • one possible reason the cordyceps f…
One possible reason the Cordyceps fungus kills its host, unlike other parasites, is that its life cycle requires the host's body to be completely utilized for spore production and…
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grace is comparing cell phone plans. a prepaid phone plan costs $0.20 p…
The prepaid phone plan will have a steeper line and lower \(y\) - intercept.
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which of these has occurred by the end of prophase? the nuclear membran…
The nuclear membrane has disappeared.
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identify the stage of mitosis in the picture below. telophase synthesis…
telophase; in the nucleus of a cell