生物
細胞生物學、遺傳學、生態學與生命科學基礎。
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what do scanning electron microscopes and transmission electron microsc…
D. Both require a vacuum.
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of the following factors, uv radiation in sunlight is absorbed by optio…
C. melanin
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when comparing two solutions, the solution that has less solute and a h…
hypotonic
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select the correct answer. what could be a result of an injury to the d…
A. loss of sensation to pressure and touch
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the study of which structure was instrumental in the formulation of the…
DNA molecule
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what type of solution allows water to enter the plant cell? options: hy…
hypotonic solution
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which reason best explains why dead specimens must be used with transmi…
C. Specimens are placed in a vacuum.
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select the correct answer. which action is a reflex action? a. asking f…
B. blinking when light is flashed in the eyes
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which structure is located in the dermis of the skin and protrudes thro…
D. Multicellular exocrine glands
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the deeper layer of the dermis, composed of dense irregular connective …
B. reticular layer (assuming the options are labeled, with "reticular layer" as the correct one)
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what do the brown structures represent? phospholipids channel proteins …
Channel Proteins
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according to the cell theory, which describes cells? all organisms are …
D. All living cells come from other living cells. (Note: Assuming the options are labeled A - D as per the order: A. All organisms are composed of multiple cells. B. All cells hav…
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which part of the cell theory is best explained by studying the ability…
A. All cells come from preexisting cells.
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this shows active transport diffusion osmosis facilitated diffusion
diffusion
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which layer of the epidermis is the most superficial layer in which all…
Stratum granulosum
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which experiments led to changes to the original cell theory? ○ experim…
D. experiments that established the existence of single - celled organisms and microbes
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the outside of the membrane often has small carbohydrates attached. tha…
identification
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which of the following is/are released by a neurons terminal buttons in…
Neurotransmitters
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select the correct answer from each drop-down menu. alma is walking in …
parasympathetic nervous system
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which of the following are components of the integumentary system? opti…
B. Skin, hair, nails, and sweat glands
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the spreading of molecules from a high concentration to a low concentra…
diffusion (the option with the label "diffusion" in the orange box)
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according to cell theory, which of the following are made of cells? che…
- flowers - blood - bacteria - skin
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which epidermal layer is water resistant, but not waterproof, and is ty…
A. Stratum corneum
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3. what is the experimential group?
In einem Experiment ist die **experimentelle Gruppe** die Teilnehmergruppe, die der manipulierbaren unabhängigen Variable (z. B. eine neue Therapie, ein Medikament, eine besondere…
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identify where you will find seminiferous tubules in the male reproduct…
The seminiferous tubules are found within the testes (the blue, oval - shaped structures in the scrotal region of the male reproductive system diagram).
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list the three components of traditional cell theory.
1. All living organisms are composed of one or more cells. 2. The cell is the basic unit of structure and function in living organisms. 3. All cells arise from pre - existing cell…
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select the correct locations on the image. identify the location where …
For female: D (ovary, where eggs mature) For male: Q (testis, where sperm mature)
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question 14 what is one disadvantage of a traditional economy? a. the s…
B. The standard of living of most people is very low, and most people barely meet their basic needs.
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which cell type functions in initiating an immune response against path…
B. Langerhans cells
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during heart surgery, red blood cells are damaged. when the blood passe…
4 (the spleen)
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which cells migrate through the body, increase markedly in number whene…
Lymphocytes
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the \boxed{} is the space between two neurons where the axon of a sendi…
synapse
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which of the following are true of neurotransmitters? each kind of neur…
- Each kind of neurotransmitter has a distinctive configuration that allows it to fit into a specific type of receptor site. (True) - There are several types of neurotransmitters.…
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match each of the four barriers of innate immunity with its mode of act…
- "secretion of sweat, saliva, and tears" → anatomical barrier - "secretion of chemicals" → inflammatory barrier - "signaling to macrophages" → phagocytic barrier - "changes in pH…
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in which tissue type would one find osteocytes? answer ○ epithelial tis…
B. Connective tissue
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multiple choice question an electric nerve impulse that travels through…
D. action potential
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select the correct answer. matt suffered slight burns in an accident. w…
C. Matt will be more prone to infections.
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which part of a neuron receives incoming messages? options: neuroglia, …
C. Dendrites
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within a neuron, messages travel in a(n) ______ form. ○ chemical ○ liqu…
D. electrical
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what part of the microscope allows you to center the image for viewing?
The part of the microscope that allows centering the image for viewing is the mechanical stage (or the stage adjustment knobs, which move the stage to center the slide - and thus …
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what is the most populous group of cells composing the lymph? answer op…
D. Lymphocytes
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a neuron has a negative electrical charge of about 70 millivolts when i…
B. in a resting state.
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10 of 10 what word is used to describe towards the tail end when refere…
caudal
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the hypodermis is an example of which type of connective tissue framewo…
A. Superficial fascia
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multiple choice question neurotransmitters are responsible for speeding…
C. communication between neurons
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which connective tissue, known as wharton’s jelly, is found in many reg…
C. Mucoid connective tissue
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the small bulge at the end of the axon that sends messages to other neu…
D. terminal buttons.
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question 5 2 pts what is the first step in the sequence given by the vi…
B. control lighting (assuming the options are labeled A, B, C, D with "control lighting" as option B; if the original options had different labels, adjust accordingly. Based on ty…
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9 of 10 this section of the brain, when cut into planes, is parallel to…
Transverse (or Axial)
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question 4 1 pts which lens set has a constant magnification factor? (o…
Ocular
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neurotransmitters are released by a neurons ______ into the synapse. te…
A. terminal button
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8 of 10 what is the almond shaped nucleus in the limbic system?
Amygdala
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select the true statement regarding osmosis. osmosis across a membrane …
Osmosis across a membrane requires that the membrane be fairly impermeable to solute particles.
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question 7 1 pts the 40x objective lens will give a total magnification…
400x
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which of the following is/are classified as supporting connective tissu…
D. Cartilage and bone
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7 of 10 the diencephalon is composed of two structures: the hypothalamu…
thalamus
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fill in the blank question the □ carries messages received by the dendr…
axon
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by which method does the following occur: water movement across the cel…
Osmosis (the option with "Osmosis" text)
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what is the innermost meninx that protects the brain and spinal cord?
The innermost meninx that protects the brain and spinal cord is the pia mater.
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connective tissues perform all of the following functions except establ…
producing specialized secretions
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the adult human brain is thought to have as many as ____ synapses. 100 …
B. 100 trillion (assuming the options are labeled as A. 100 million, B. 100 trillion, C. 100 billion)
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answer the following questions based on the article you just read. micr…
One advantage of light microscopes over electron microscopes is that light microscopes can be used to observe living specimens (since electron microscopes require a vacuum, which …
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which tissue type is specialized for the conduction of electrical impul…
B. Nervous tissue (assuming the second option is labeled B, with the option text "Nervous tissue")
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select the correct answer. an enzyme in a cell became dysfunctional bec…
C. Helicase
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what are neurons with short axons or no axon at all?
Interneurons (or local circuit neurons, non - projecting neurons)
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the dendrite is the part of the neuron that receives electrical message…
B. receives messages from other neurons. (Here we assume the options are labeled as A, B, C, D with A being "receives electrical messages from other cells", B being "receives mess…
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select the correct answer. why do you think the eukaryotic dna requires…
D. Eukaryotic DNA is much larger and replication at multiple origins helps reduce the time required for whole genomes to replicate.
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which of the following is/are characteristic of interstitial growth in …
The cartilage expands from within as chondrocytes in the matrix divide, grow, and produce new matrix.
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which of the following statements best describes the fluid mosaic model…
B. A lipid bilayer with protein molecules dispersed within it
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what moves from one end of the axon to another like a flame along a fus…
C. the action potential
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select the correct answer from each drop-down menu. rna primase synthes…
thymine
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what type of membrane consists of extensive areas of areolar tissue bou…
D. Synovial membrane
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the human body contains as many as 1 ______ neurons. ○ trillion ○ hundr…
A. trillion
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read the article and use the information to answer the questions that f…
One advantage of electron microscopes is that they have a much higher resolution than light microscopes, enabling the observation of extremely small structures (such as viruses, d…
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which type of connective tissue proper forms the supporting connective …
B. Reticular (assuming the second option is labeled B; if options are labeled numerically, adjust, but here the second option is Reticular)
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select the correct answer from each drop-down menu. rna primase synthes…
First dropdown: uracil Second dropdown (implied, as RNA has uracil instead of thymine in DNA): thymine (assuming the second dropdown has thymine as an option, though not fully sho…
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question simple diffusion is best described as substances ________. ans…
C. moving passively down a concentration gradient
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drag the tiles to the correct boxes to complete the pairs. match the ph…
- "the nucleus divides" → mitosis - "the cytoplasm divides" → cytokinesis - "the DNA replicates" → interphase
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duing a resting state, the inside of the neuron is (negatively/positive…
negatively
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simple diffusion is best described as substances ________. answer movin…
C. moving passively down a concentration gradient
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which of the following is unique to cardiac muscle tissue? multiple nuc…
B. Intercalated discs
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select the correct answer. a model cell with damaged dna was created to…
D. The cell divided and created two nonidentical cells.
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select the correct answer. an elephant has 56 chromosomes. which statem…
D. The zygote has 56 chromosomes, 28 inherited from the mother and 28 from the father.
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which dense connective tissue type often underlies transitional epithel…
B. Dense irregular connective tissue
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the terminal button is where a neuron grows new axons. sends messages t…
B. sends messages to other neurons.
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which muscle type consists of cells with tapering ends that contain a s…
A. Smooth muscle
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select the correct answer from each drop-down menu. augustine is writin…
differentiation
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which type of connective tissue is located within and deep to the dermi…
D. Areolar tissue
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the formula for cell d2 is shown in the spreadsheet. use the data shown…
D. \( =D3/(B3*C3) \)
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select the correct answer from each drop-down menu. augustine is writin…
The correct option for the first drop - down is: through mitosis
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cells of which muscle type are able to divide and, therefore, regenerat…
C. Smooth muscle
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during the second week of development, cells of the inner cell mass are…
C. ectoderm, mesoderm, and endoderm
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question 32 the ______ revolution took place about 5,000 years ago. ○ a…
A. Agricultural ### Question 33
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all of the following are true of bone tissue, except it exhibits apposi…
The correct option is: elastic fibers are the predominant fiber type in the bone matrix
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select the correct answer from each drop-down menu. if a heterozygous m…
0%
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the cluster of fibers at one end of a neuron that receive messages from…
B. Dendrites (assuming the second option is labeled B, as the text shows "dendrites" as the second option; if the original labeling was different, adjust the identifier but the co…
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blood and lymph are classified as which tissue type? options: neural ti…
D. Connective tissue
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labels (top): right lumbar region, left lumbar region, umbilical region…
To solve this, we analyze the abdominal regions (9 - region model): ### Top - row (superior) labels (from left to right): 1. **Left hypochondriac region**: Upper - left abdominal …
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select the correct answer from each drop-down menu. if a heterozygous m…
First drop - down: 50% Second drop - down: 0% (or in the context of the problem's possible options, if we assume the drop - down has 0% as an option, otherwise based on the Punnet…
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11. a cancerous tumor of glandular (epithelial) cells is called:______ …
e. adenocarcinoma