Feature detectors Physiologically, Receptors are organ or cell that are able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve.
Dendrite are branch-like segments located at the anterior part of a neuron that function in receiving stimulation via electrical messages in order for the cell to become active.
Retinal cells also known as photoreceptor cell works in the area of light detection. They usually take light focused by the cornea and lens and convert it into chemical and nervous signals which are transported to visual centers in the brain by way of the optic nerve.
Feature detectors refers to the way by which the nervous system filters complex natural stimuli with the use of neuron in order to extract behaviorally qualities (such as orientation, movement, and length) that have a high probability of being associated with important objects or organisms in their environment, as opposed to irrelevant and unimportant background or noise.
Therefore, from the above explanation; Option d is the right choice.
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Full Question ;
Neurons that respond to specific qualities (e.g., such as orientation, movement, and length) that make up objects are called
Select one:
a. receptors
b. dendrites
c. retinal cells
d. feature detectors
why didn’t darwin use mendel’s results when formulating his theory of evolution by natural selection?
Darwin's focus on small quantitative variations as the raw material of evolution may have prevented him from discovering the laws of inheritance. Heredity and variation were two concepts that played a central role in Darwin's development of the theory of evolution by natural selection.
Natural selection is the variation in phenotypic variance-driven individual survival and reproduction. A key mechanism of evolution is the generational evolution of a population's heritable traits. Charles Darwin popularized the term "natural selection" by comparing it with artificial selection, which in his view is intentional while natural selection is not.
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a father carries the xga trait and passes it on to all of his daughters, but none of his sons. what type of inheritance does this represent?
All of a father's daughters acquire the xga trait from him, but none of his boys do. The inheritance pattern indicates X-linked dominance.
A dominant gene is carried by the X chromosome in a mechanism known as X-linked dominant inheritance, also known as X-linked domination. Compared to the recessive type linked to X, this pattern of inheritance is less noticeable.
The given statement would demonstrate the inheritance sequence's X-linked dominant form. The biggest positive reaction that can happen is hemolysis, which is rare but shows the existence of a powerful complement-fixing antibody. In transfusion medicine assays, the RBC agglutination is most frequently interpreted as a positive response indication.
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in response to a nerve impulse, the _____ releases neurotransmitters.
In response to a nerve impulse, the presynaptic neuron to release the neurotransmitter.
Chemical transmission basically involves the release of chemical messengers which are known as the neurotransmitters. Neurotransmitters carry the information from the pre-synaptic neuron towards the post-synaptic neuron which receives the signal.
Synapses are formed between the nerve terminals or the axon terminals on the pre-synaptic neuron as well as the cell body or the dendrites of the post-synaptic neurons. The pre-synaptic neurons release these neurotransmitters when they receive a nerve impulse. These neuro transmitters then diffuse through the synaptic cleft and go and bind to the receptors present on the post-synaptic neuron.
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True or False?α-strands and the β-helices are the two most common forms of secondary protein structure.
True. The two most prevalent styles of secondary protein complexes are -strands and -helices.
Helixes and pleated sheets are the two most typical forms of secondary structures. Hydrogen bonds, that also form between the amino H and carbonyl O of two different amino acids, keep both structures in place. Beta-Pleated sheets and alpha-Helixes are examples of a protein's secondary structure. Both of them are created by hydrogen bonds between the amino H and carbonyl O of different amino acids. Beta-pleated sheets and alpha-helices are the most typical structures that are created. Hydrogen bonds that form all along protein backbone bind the two of them together. A typical component of protein structure is the -helix.
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A bird gets tired while flying over the ocean, so it lands on a buoy to rest. However, the bird avoids each passing wave by flying up right before the wave hits the buoy and returning immediately after. What wave characteristic is MOST likely to give the bird a good chance to rest between waves? A. a high average velocity B. a deep wave base C. a short average wave period D. a low wave frequency
A bird gets tired while flying over the ocean, so it lands on a buoy to rest, and the bird flies up to avoid each passing wave, the wave characteristic is most likely to provide the bird with a good chance to rest in a short average wave period, as in Option c.
What is the significance of the wave period for birds?In a short wave period, birds get less time to rest between each wave, and in a longer wave period, birds get more time to rest between waves, so the velocity of the waves affects the bird's resting capacity.
Hence, a bird gets tired while flying over the ocean, so it lands on a buoy to rest, and the bird flies up to avoid each passing wave, the wave characteristic is most likely to provide the bird with a good chance to rest in a short average wave period, as in Option c.
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about how many cells comprise the body of an adult? group of answer choices 50 to 100 billion 50 to 100 quadrillion is isn't known 50 to 100 million 50 to 100 trillion
Adult human body contains approximately 50 to 100 trillion cells.
The exact number of cells in an adult human body is not known, but estimates range from 50 to 100 trillion. This estimate takes into account all of the different types of cells present, including muscle cells, nerve cells, skin cells, and others. The number of cells in an adult human body is the result of many years of growth and division, beginning with a single cell at the time of conception. The total number of cells changes throughout life as cells die and are replaced by new cells. However, the overall number of cells in the body remains relatively constant, despite the constant turnover of individual cells.
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what experimental results would support the scientists' hypothesis? label the bars on the graphs to match the results predicted by the hypothesis.
When this experiment was performed, the results which were obtained supported the scientists' hypothesis that Mice which has received the microbes from an obese donor had a greater increase in their body fat than the mice which had received microbes from a lean donor.
Scientists has randomly divided lean the germ-free mice in two groups. The experimental group was the group which received microbes from a genetically obese donor and the control group was given microbes from a genetically lean donor. Both groups were then fed the same low-fat and high-fiber diet.
After two weeks, the scientists observed the increase in body fat in the mice. The results which were obtained supported the scientists' hypothesis that Mice which has received the microbes from an obese donor, which is the experimental group had a greater increase in their body fat than the mice which had received microbes from a lean donor which is the control group.
--The given question is incomplete, the complete question is
"For this experiment, the scientists randomly divided lean germ-free mice into two groups. The experimental group received microbes from a genetically obese donor (the donor's obesity was due to genetic factors, not diet). The control group received microbes from a genetically lean donor. Both groups were fed the same low-fat, high-fiber diet.
After two weeks, the scientists measured the increase in body fat in the mice. They also determined the amount of energy (in kcal/g) in the feces of both groups -- that is, the energy in the food molecules that was not extracted or absorbed by the mice.
What experimental results would support the scientists' hypothesis? Label the bars on the graphs to match the results predicted by the hypothesis."--
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1. Do both plant and animal cells have a nucleus? What is the primary function of the nucleus?
An essential organelle in a eukaryotic cell, the nucleus stores DNA and controls ribosome synthesis.All animals are eukaryotes, and eukaryotes have nuclei in their cells.
What is the main purpose of the nucleus?The nucleus functions as the cell's logical link control ( llc and genetic information store by containing the genome.Only the final phase of gene expression (translation), which takes place in the cytoplasm, is associated with the cytoplasm. DNA replication, transcribed, and RNA processing all occur within the nucleus.
What role does the animal cells class 9 nucleus play?The nucleus serves two main purposes:It is in charge of keeping the DNA or other genetic material within the cell.It is in charge of organizing a variety of crucial cellular processes, including protein synthesis, cell proliferation, growth, and a number of other crucial operations.
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which connect the premotor cortex to the primary motor cortex in the right hemisphere?
The right hemisphere of the brain is connected to the primary motor cortex by a set of neural pathways known as the corticospinal tract.
The premotor cortex, located just in front of the primary motor cortex, plays a key role in the planning and execution of voluntary movements. It receives input from sensory regions of the brain and sends signals to the primary motor cortex, which then sends signals to the spinal cord and muscles to initiate movement. The corticospinal tract, also known as the pyramidal tract, is composed of two main pathways: the lateral corticospinal tract and the ventral corticospinal tract. These pathways play a crucial role in the voluntary control of movement, as well as in the regulation of muscle tone and coordination. The corticospinal tract is particularly important in fine motor control, such as the movements required for typing, playing an instrument, or writing by hand. Any damage to these pathways can result in motor deficits and decreased dexterity.
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The A/C system performs which of the following functions?
A) Cool the air in the passenger compartment.
B) Remove moisture from the air to improve comfort in the vehicle.
Both A and B.
D) Neither A nor B.
What has metagenomic analysis allowed researchers to do for the first time?
Using metagenomics, researchers can analyze microbial diversity and also identify new proteins, enzymes, and biochemical pathways. Metagenomics has been used to identify new beneficial genes from the environment, together with novel antibiotics, enzymes that biodegrade pollutants, and enzymes that make novel products.
Metagenomics is the study of genetic material that has been directly retrieved from environmental or clinical sample via a process called sequencing. Alternative names for the wide field include ecogenomics, microbiomics, community genomics, and environmental genomics. To offer a profile of variation in a natural sample, early environmental gene sequencing cloned certain genes (usually the 16S rRNA gene), in contrast to classical microbiology, microbial genome sequencing, and genomics, which rely on manufactured clonal cultures.
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Gates respond to all these stimuli except:a. chemical messengers.b. ligands.c. changes in electrical potential (voltage) across the plasma membrane.d. physical deformation of the plasma membrane.
The above statement states that all of these stimuli, with the exception of option (d), the physical deformation of the plasma membrane, cause the gates to open.
What are plasma membranes and what do they do?A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it offers a stable climate inside the cell. And that membrane has a number of functions. One is to provide vitamins into the cell while removing toxic chemicals from it.
What materials make up the plasma membrane?The plasma membrane is made up of lipids and proteins, much like every other cellular membrane. The phospholipid bilayer, which creates a permanent boundary between two aqueous compartments, is the membrane's basic structural component.
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The term for small structures within cells that perform specific functions is_____.
Organelles is the term for small structures within cells that perform specific functions.
An organelle is a subcellular shape that has one or more specific jobs to carry out within the cell, much like an organ does inside the frame. a few of the extra important cell organelles are the nuclei, which save genetic information; mitochondria, which produce chemical strength; and ribosomes, which collect proteins.
An organelle is a specific structure inside a cellular, and there are numerous different styles of organelles. Organelles are also referred to as vesicles within a cellular. and they truely have a characteristic it really is critical, due to the fact we need to compartmentalize all of the functions in the cell. So there desires to be a membrane across the mechanisms for making a unique product within a cell.
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What evidence supports the impact hypothesis for the end-Cretaceous extinction?
The rock record contains a wealth of data that lend credence to this theory. Near Chicxulub, Mexico, a massive crater with a diameter of 180 km (112 miles) and dating to the end of the Cretaceous was found buried in sediments from the Yucatán Peninsula.
At Boltysh in Ukraine, a second, smaller crater that is between 2,000 and 5,000 years older than the one at Chicxulub was found in 2002. Its existence suggests that numerous bolide impacts may have caused the K-T extinction. The rare-earth element iridium, which is only found in great abundance in the Earth's mantle and in alien rocks, as well as tektites—fractured sand grains typical of meteorite impacts—have also been discovered in deposits linked to the extinction.
Despite this compelling evidence, the asteroid theory has encountered resistance from certain palaeontologists, who argue that terrestrial factors were to blame for the extinction and that a comet or smaller object may have contributed to the amount of iridium that was disseminated by the impact. At the end of the Cretaceous, India experienced a massive lava flow known as the Deccan Traps.
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Molecules tend to move spontaneously ________ their chemical gradient.
Molecules tend to move spontaneously DOWN their chemical gradient.
The gradient in an ion or molecule's concentration is referred to as a chemical gradient. A biological membrane may have a concentration gradient when one side of the membrane has a higher concentration than the other. Without an obvious barrier dividing the region of higher concentration from the region of lower concentration, a concentration gradient may nevertheless exist in a solution. In both situations, the ion or molcule moves from the area of higher concentration to the area of lower concentration due to the free energy produced by the concentration difference.
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Which part of the nerve cell sends information to the brain?
synapses
synapses
axons
axons
neurons
neurons
dendrites
Answer:
Axons
Explanation:
The elongated fibre known as the axon transfers the neural signal from the cell body to the terminal endings.
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What cells does Pneumonia attack Need Asap
Answer:
White blood cells
Explanation:
Most pneumonia occurs when a breakdown in your body's natural defenses allows germs to invade and multiply within your lungs. To destroy the attacking organisms, white blood cells rapidly accumulate. Along with bacteria and fungi, they fill the air sacs within your lungs (alveoli).
All of the following are responsibilities of derivative classifiers except: 0 Derivative classifiers must have original classification authority O Derivative classifiers must have expertise in the subject matter on which they are creating documentation, as well as classified management and marking techniques 0 Derivative classifiers must have ready access to classification guidance 0 Derivative classifiers must understand derivative classification policies and procedures
"Derivative classifiers must have original classification authority" is not considered a responsibility of the derivative classifiers.
Hence, option a is the correct option.
The original classification authority is what is required for derivative classifiers. The process involves the leveraging of already-classified information in order to produce new documents or new materials and then the classification of the new content in accordance with the classification markings of the source information.
Incorporating, restating, paraphrasing, or creating information which was previously classified in a new way is known as derivative classification. The protection as well as the integrity of the classified information are upheld by the derivative classifiers. They need to be knowledgeable regarding classification management as well as the marking procedures and the subject matter of the classified information.
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A pattern of complex heredity where there are more than two alleles in a population
A pattern of complex heredity where there are more than two alleles in a population is referred to as polymorphism.
What is polymorphism?Polymorphism in biology refers to the occurrence of multiple forms or morphs of a species in a single population. Polymorphism can be a result of genetic variations, environmental factors, or a combination of both.
It is the presence of more than two alleles in a population that are responsible for the same characteristic. This can result in variations in physical appearance, behavior or other traits in a population. The separation of most higher organisms into male and female sexes is the most obvious example of this.
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The complete question is:
A pattern of complex heredity where there are more than two alleles in a population is called?
what part of the brain is the main relay station for information from the senses?
The thalamus part of the brain is the main relay station for information from the senses
Your thalamus is a structure in the middle of your brain that looks like an egg. It is referred to as a relay station for all incoming motor (movement) and sensory (touch, sight, hearing, and smell, but not smell) information to your brain. Before being routed or directed to its destination in your brain's cerebral cortex—the outermost layer of your brain—for further processing and interpretation, all information must first pass through your thalamus, like a relay or train station.
it brings information into your brain through nerve signals from all of your senses—taste, touch, hearing, and sight—with the exception of smell. The thalamic nucleus of each sensory function receives, processes, and transmits information to the area of your cerebral cortex that is related to that function.
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What characteristics of Chlamydomonas are typical of protists in general? Check All That Apply - its mode of nutrition - its size - its aquatic habitat - its type of motility - the lack of characteristics that define members of the plant, animal, and fungal kingdoms - its ecological role
Its type of the motility is the main characteristics of Chlamydomonas are typical of protists in general ,therefore the correct option is D.
Chlamydomonas is the protist, which are a different group of organisms. Some traits of Chlamydomonas that are typical of protists in general include its mode of nutrition( frequently heterotrophic), its size( generally bitsy), its submarine niche, its type of motility( frequently flagella), and also its ecological part( frequently as a primary patron).
Protists warrant the characteristics that define the members of the factory, beast, and the fungal fiefdoms, similar as the organized towel and organs, and lack of cell walls. Protists are set up in a wide range of territories, from brackish to marine and from hot springs to snowfields, and they frequently play a crucial part in the food web by furnishing energy.
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some species of animals and plants are currently responding to climate change by extending their range into new territories t/f
The claim that some animal and plant species are currently expanding their range into new areas in response to climate change is True.
What impact does climate change have on plants and animals?The availability of water, food sources, and vegetation are all impacted by rising temperatures, among other factors. Ecosystems might become incapable of supporting some species, forcing animals to migrate outside of their usual ranges in search of food and suitable living conditions and leading to the extinction of other species.
How is climate change affecting animals?Climate change has created several difficulties for animals in all of our parks. Because of changes that result in a lack of food, less successful reproduction, and interactions with the environment for local fauna, rising temperatures reduce the likelihood of many species surviving.
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employees should use a disinfectant when cleaning up a surface contaminated by blood. (True Or False)
A disinfectant should be used to remove any blood contamination. Thus, the claim is accurate.
What is the purpose of disinfectant?Disinfecting involves applying chemicals (disinfectants) to surfaces and items to eradicate germs. Bleach or alcohol solutions are a few of frequent disinfectants. In order to attack the germs, you often need to keep the disinfection just on surfaces and items for a particular amount of time.
Disinfectant: What does it mean?Any drug or method that kills germs, including virus, bacteria, and other microbes that may infect people and cause disease, and therefore is typically employed on non-living materials.
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regarding fluorescence microscopy: question 8 options: a) it can be used to visualize specimens by using a fluorochromes. b) fluorescently labeled antibodies can be used to identify pathogens. c) this microscopic technique can be used to localize proteins in the cell. d) all of the above are true.
The correct statements about fluorescence microscopy are: (a) it is used to visualize specimens by using a fluorochromes. (b) fluorescently labeled antibodies are used to identify pathogens. (c) this microscopic technique is used to localize proteins in the cell.
Fluorescence microscopy is the optical form of microscopy which makes use of fluorescence to visualize the specimens. The microscopy can be used to create 3-D images of the specimens but a smaller level. A high intensity light source is used for exciting the fluorescent material.
Fluorescent antibodies are the usual antibodies tagged with a fluorescent molecule. These are extensively used to detect the biochemical pathways inside living organism or to study the drug metabolism.
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are used by cells to get and store energy. a. carbohydrates b. proteins c. lipids and. nucleic acids
Lipids, which are employed by cells to obtain and store energy, are the proper response.
The storage of energy in the form of neutral lipids like triglycerides and sterol esters is the primary function of lipid droplets (LDs), intracellular organelles. They are common organelles that can be found in bacteria, fungi, plants, and even animals. LDs are made up of a polar lipid monolayer with many different proteins, some of which are involved in lipid metabolism, around a core of neutral lipids. Diglyceride acyltransferase 1 (DGAT1) and other enzymes that synthesize neutral lipids in the endoplasmic reticulum (ER) membrane cause the emergence of nascent LDs, which are organelles that are partially or entirely different from the ER.
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Releases hormones when stimulated by acth from the anterior pituitary is called?
Corticotropin-releasing hormone (CRH) releases hormones stimulated by acth from the anterior pituitary.
In general , the CRH is responsible for stimulating your anterior pituitary lobe and triggers the release of ACTH. ACTH then prompt your adrenal glands, specially the portion of your adrenal cortex, for releasing cortisol and androgens. After this their is an increase in cortisol that helps to signals your hypothalamus for decreasing the CRH levels, this way the feed back loop is completed.
ACTH also guides and controls the manufacturing of another hormone known as cortisol. Cortisol is produced in the adrenal glands, small glands located on your kidneys. This hormones plays key role in respond to stress.
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So this isn’t really a question about biology it’s just I have a test on 2 topics of biology and I don’t know how to study biology as in there’s so much to know that I’m type of starting to give up not cause of the subject actually I love it it’s just personally I don’t know how to study it
Please any advice to study (tried making my own notes still no use ☹️)
Answer:
Quizlet
Explanation:
You should go to quizlet and type in the name of your topic. It should give you flashcards that can test you on the lesson, and on the back of the flashcards are the answers.
Another way I suggest is typing in random questions from your topic and you may be directed to a website that has a lot of answers and questions that relate to that topic.
I really hope this helps and good luck on your test :)
Let me know the name of your topic and maybe I can give you a website that could help.
Answer: Some advice to better help you study is only take notes on what you believe is key information. This will lessen the workload and also get rid of unwanted information. I also recommend making notes on ways you understand. Often think if any of the information you read would come up in the Quiz if it is key information. If you have trouble writing the notes and you can't comprehend what it says make it more simpler this technique comes in handy. Also take breaks after reading a certain amount of paragraphs. I would also recommend searching for keywords you don't understand and make sure to try and retain focus.
I hope this helps you. Good luck (;
2. how does dna replication occur? how many strands of a dna molecule act as templates during replication and what is their orientation?
In the process of DNA replication, both the strands act as template. The orientation of both of the strands is opposite, where one is 5'→3' and one is 3'→5' direction.
What is DNA replication?DNA replication is semiconservative in nature. This means that each of the strands in the DNA double helix structure acts as a template for the synthesis of a new, complementary strand of DNA molecule. This process gives rise to two daughter molecules from one single starting DNA molecule, with each newly synthesized double helix containing one new strand and one old strand.
The DNA replication occurs in both the directions. And, both the strands act as template strand where, one is called as leading strand and one is lagging strand. Both these strands replicate in opposite directions: one in the 5'→3' direction and the other one in the 3'→5' direction.
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which is the best example of a parasitic relationship?
a. Parasite with its host
b. Mosquitoes and humans
c. Cow with heartworms
The best example of a parasitic relationship is Parasite with its host. A few examples of human parasites are worms and other protozoa. Endoparasites, which attack the body from the inside, and ectoparasites, which attack the skin from the outside, are the two forms of parasites that affect humans.
Feces may include endoparasite cysts and eggs, which can be used to identify the parasite in the human host and provide a means for the parasite species to move on to new hosts. There are several ways that humans can contract parasite diseases, but the chance can be reduced by following basic hygiene and sanitation rules. The most accurate diagnosis is done with a qPcr DNA antigen assay, which is infrequently provided by primary care physicians in the United States because the majority of labs only offer research services.
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separation of proteins in the first dimension of 2d gel electrophoresis is based on a protein’s molecular weight. true or false
truth. The molecular weight of proteins determines how they are separated in the first dimension of 2D gel electrophoresis.
Two-dimensional gel electrophoresis separates proteins first based on isoelectric point and then based on size, whereas one-dimensional SDS-PAGE separates proteins based on size. In isoelectric focusing, proteins are first separated according to their isoelectric point (pl), followed by separation by SDS-PAGE, which separates proteins according to molecular weight. Using high-throughput mass spectrometry, individual protein spots can be eluted and identified by 2D electrophoresis. One-dimensional SDS-PAGE separates proteins by size, whereas two-dimensional gel electrophoresis separates proteins first by isoelectric point and then by size.
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