生物
细胞生物学、遗传学、生态学与生命科学基础。
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multiple - choice question if you use a higher magnification objective …
You can see the specimen in more detail.
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who was the scientist who first described cork cells? van leeuwenhoek s…
D. Hooke
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which of the following incorrectly matches the term with its location? …
B. Genes are located in a nucleotide (Incorrect)
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16. minji and isabelle are identifying microorganisms in science class.…
B. Closely related
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multiple - choice question what do you have to be careful of when movin…
B. Not to bang into the objective and break it.
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1. why is the suns heat important to earth in regard to the water cycle…
1. The sun's heat causes water evaporation, initiating the water cycle. 2. Sunlight is essential for photosynthesis in plants, which forms the base of the biosphere's food - chain…
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multiple - choice question what do the focusing knobs do? they move the…
They move the stage up and down to make the image more clear.
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as dna is replicated, which dna base pair will bond to cytosine? adenin…
A. guanine
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the cell membrane is also called (select all that apply) cell wall flui…
1. plasma membrane, phospholipid bilayer 2. cell membrane 3. It functions best in a weakly basic environment. 4. All cells have a nucleus.
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15. a virus can reproduce only inside a cell. once inside, the virus ca…
Cell membrane
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multiple - choice question how do you change the objective lens? by mov…
By turning the nosepiece.
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rosalind franklin is famous for which contribution to the study of dna?…
creation of an X - ray diffraction image of DNA structure
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14. alfredo looks at a thin scraping of a lettuce leaf under the micros…
Cell wall Chloroplasts Large Vacuoles
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multiple - choice question what do we place on the stage? an objective …
B. A slide with a specimen
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a student correctly states that waters ability to act as a universal so…
1. B. The transport of glucose and oxygen in the bloodstream 2. C. Lipids
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what was marshall nirenberg and heinrich matthaeis contribution to our …
discovery of codons
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what is the primary evolutionary distinction that separates a eukaryoti…
1. the presence of a membrane - bound nucleus and other organelles 2. cohesion 3. Mitochondria
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which best describes the outcome of dna replication? o the new dna mole…
The new DNA molecule is identical to the original DNA.
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13. on saturday mornings, james babysits his nephew, tyler. tyler is fa…
Maintaining homeostasis
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in which structure is all the genetic information of an organism found?…
D. DNA
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12. kelli and komar want to determine if the grass in the ecosystem is …
Count the number of cells in the organism
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glycogen is a complex carbohydrate that serves as an energy - storage m…
1. C. glucose 2. C. carbohydrates 3. B. the presence of a membrane - bound nucleus and other organelles
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multiple - choice question why cant we see microorganisms with our aked…
Because they are too small.
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who first identified dna? james watson friedrich miescher erwin chargaf…
Friedrich Miescher
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the idea of ____________ is at the heart of economics. budgets, insuran…
cost - benefits analysis
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which organelles are only found in animal cells? * □ lysosome □ cell me…
1. Centrosomes/Centrioles 2. High Heat of Vaporization 3. regulation of body temperature
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11. kelli and komar make the following arguments during their observati…
Kelli's argument is correct. Observations of grass under a microscope would show that grass is made up of cells, which are living.
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choose the correct answer. what is the major factor that determines the…
C. climate
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which type of solution does water move out of the cell and the cell shr…
1. B. Hypertonic 2. D. Phospholipids 3. C. Must sleep
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how are the reactants represented in the chemical equation for photosyn…
$6CO_2 + 6H_2O$
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how many different major biomes do most scientists recognize? between 4…
D. between 8-10
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in the absence of international trade, what would the price be in this …
$50$
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what is a group of organisms that are all of the same species living in…
B. a population
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choose the correct answer. the earth is broken up into increasingly mor…
Organism --> Species --> Population --> Community --> Ecosystem --> Biome
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which specialized cell type would be found lining the trachea, the part…
epithelial cells
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what is the main component of the cell membrane? * carbohydrate cholest…
Phospholipids
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10. kelli and komar are making observations of the ecosystem surroundin…
Cells are present under a microscope
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if the number of photosynthetic organisms on earth decreased drasticall…
A. More carbon dioxide gas would be found in Earth's atmosphere
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multiple choice identify the choice that best completes the statement o…
1. C. Digestive and Cardiovascular 2. D. Cells
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use the example below to answer questions: as the baby grows inside the…
Response
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which organelles are only found in plants? mitochondria chloroplast cel…
1. Chloroplast, Central Vacuole 2. Proteins are long chains of amino acids, while lipids consist of glycerol and fatty acids.
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imagine that a disorder that causes the cell cycle to stop affects the …
The frog will immediately not be able to use the muscle.
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10. kelli and komar are making observations of the ecosystem surroundin…
Cells are present under a microscope
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multiple choice 1 point question #19: which of these is an example of t…
Question #19: D. Shivering on a cold day Question #20: B. Cell, tissue, organ, organ system
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which component of earths atmosphere is decreased due to photosynthesis…
carbon dioxide
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what property of water best helps aquatic life survive in lakes during …
1. water is less dense as a solid than a liquid 2. has a nucleus 3. Nucleic Acids
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10. kelli and komar are making observations of the ecosystem surroundin…
1. It can grow. 2. It can reproduce.
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14. animals, fungi, and most protists are a. heterotrophs b. autotrophs…
14. A. Heterotrophs 15. C. Large brain and walks upright and has opposable thumbs 16. B. Asexual reproduction 17. C. Sexually 18. C. Responding to stimuli 19. A. Their senses 20. …
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question #17: 17 responsible for receiving and sending electrical messa…
A. Nervous System
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use the example below to answer questions. as the baby grows inside the…
stimulus
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(5) which neuroscience method can successfully stimulate the brain area…
E. All of the above
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a student crosses different plants in five trials and recorded his resu…
V - Complete dominance W - Complete dominance X - Incomplete dominance Y - Complete dominance Z - Incomplete dominance
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15. what adaptation do humans have that allows them to live in most all…
15. C. Large brain and walks upright and has opposable thumbs 16. B. Asexual reproduction 17. C. Sexually 18. C. Responding to stimuli 19. A. Their senses 20. C. Mitochondria
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question #15: 15. transports oxygen and nutrients to body cells and rem…
Question #15: C. Circulatory system Question #16: A. Excretory system
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what prefix means breakdown/downward * bio cata lacto ology prokaryotes…
1. B. cata 2. Cell Membrane, Ribosomes, Cytoplasm, DNA
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9. students are investigating living and nonliving organisms. the stude…
Is the object made of cells?
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use the example below to answer questions. as the baby grows inside the…
Positive Feedback Loop
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which process connects glycolysis and the citric acid cycle? ○ lactic a…
C. acetyl CoA formation
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22 multiple choice 1 point the two types of feedback systems that help …
A. positive and negative
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students are investigating living and nonliving organisms. the students…
The living organisms in the fish tank are fish, plants, and bacteria. The non - living objects are gravel, rock, and plastic coral.
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exam - like questions 1 - 5: (1) you want to turn on neurons to make hu…
Transcranial Magnetic Stimulation (TMS)
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how has the study of mitosis affected scientists knowledge of cancer? i…
It led to an understanding of how cancer cells divide so rapidly.
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8. eukaryotes have cells a. without a nucleus b. with a cell c. with a …
8. C. With a nucleus 9. B. Growing and developing 10. C. Homeostasis 11. B. Collecting energy to do work 12. A. Food for energy, water, space, and a condition called homeostasis 1…
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multiple choice 1 point 4. the systems in your body ____________ a) int…
A. interact with one another to provide for the body's needs
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of dna, providing structural stability and support to the molecule. wha…
C. nucleotides
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exam - like questions 1 - 5: (1) you want to turn on neurons to make hu…
E. Transcranial Magnetic Stimulation (TMS)
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5. the process by which an organisms internal environment is kept stabl…
B. Homeostasis
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students are investigating living and nonliving organisms. the students…
Is the object made of cells?
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which specialized cells are responsible for transmitting messages throu…
neurons
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if the hog starts running around on the field, what neural code does yo…
B. population code
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respiratory system interacts with the __________ system to make sure ox…
C. Circulatory
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an organism is exposed to a mutagen that causes a mutation in the kidne…
D. The offspring will not inherit the mutation because the mutation is not in a sex cell.
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2. which characteristic most fundamentally distinguishes athenian democ…
A. Direct citizen participation in governance
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8. how do the chloroplasts and mitochondria of plant cells work togethe…
They provide energy through the processes of photosynthesis and respiration
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if a runner is doing vigorous exercise, which results from the anaerobi…
accumulation of lactic acid
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for the three - part essay question that follows, provide your answer t…
Part A: Peter needs to burn 2090 more calories. Part B: His new daily calorie goal should be 1900 calories. Part C: No, Peter did not meet his calorie goal that day because his ne…
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2. based on the information regarding somalia’s current state, what act…
The international community, including the United States, could take several actions. These include providing humanitarian aid, supporting peace - building efforts, offering econo…
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which correctly describes crossing over? the process whereby non - sist…
The process whereby non - sister chromatids exchange genetic material
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a scientist hypothesized that oxygen atoms from both carbon dioxide and…
Analyze the results, and change the experimental methods to retest the hypotheses in a different way.
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20 ordering 5 points place the levels of organization in order from lea…
1. Cell 2. Tissue 3. Organ 4. Organ System 5. Organism
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the criminal attempted to ______ his theft by saying he needed food for…
1. A. extenuate 2. A. sadistic
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what role does cellular respiration play in the carbon cycle? o it remo…
It releases $CO_2$ to the atmosphere during the citric acid cycle.
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the list describes several events that occur during the process of mito…
V - III - I - II - IV
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7 students in a science create a model of a plant cell. their model is …
Cell wall and Cell membrane
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multiple choice 1 point which of the following feedback loops is this e…
Positive Feedback Loop
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11) enzymes put the order of events in order. * 4 points step 1 step 2 …
Step 1: Enzyme has the correct shape, waiting for the substrate to attach Step 2: Enzyme and substrate attach, enzyme - substrate complex is made Step 3: Reaction occurs, bonds ar…
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4. which nuclear process is represented below? a dna molecule untwists.…
D. Replication
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after frida stops exercising, she continues to breathe heavily. what is…
Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration.
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identify the abiotic factors in this picture. water bison grass mountai…
A. Water, D. Mountains
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some single - celled organisms make copies of themselves through mitosi…
reproduction
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3. when dna separates into two strands, it is most likely getting ready…
B. replication
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in the study of cancer, researchers have used different types of cells,…
It is well supported
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16 multiple choice 1 point what is the role of a receptor in helping an…
detects stimuli and tells the control center
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2.b. directions: read and annotate below. answer the questions based on…
1. no real centralized government 2. at least sixteen 3. Mohammed Siad Barre became the leader through a military coup 4. Mohammed Siad Barre was overthrown by the United Somalia …
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what is the first step of dna replication? the dna molecule unzips alon…
The DNA molecule unwinds along weak hydrogen bonds.
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a poison placed on the tips of darts by natives of the amazon rainfores…
muscle cells
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1. during replication, the strands of a double - stranded dna molecule …
nitrogenous bases
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water sample from a local pond. one sample contains euglenas. euglenas …
It performs all of the functions for survival
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meiosis occurs in a series of different phases and creates genetically …
B. crossing over
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11 multiple choice 1 point which of the following is not one of the cha…
Has blood