Answer: Option D is correct (12).
Explanation:
Codon is a set of DNA or RNA nucleotides so each amino acids are coded by 3 bases. For the specification of 4 amino acids, 12 bases are required. 3*4=12
Which of the following statements about comets is true?
A. Comets are mostly made up of dust particles, frozen water and frozen gases. They are usually very easy to see but as
they approach the Sun, these particles condense and become much harder to see
B. Comets are mostly made up of rock. They are usually very easy to see but as they approach the Sun, the rock condenses
and becomes much harder to see.
C. Comets are mostly made up of rock. They are usually very hard to see, but as they approach the Sun, the rock heats up
and becomes much easier to see.
D. Comets are mostly made up of dust particles, frozen water and frozen gases. They are usually very hard to see, but as
they approach the Sun, these particles heat up and become much easier to see.
A human skin cell contains 46 chromosomes. How many chromosomes are present in a human egg cell?
Answer:
Thus, if a skin cell or somatic cell contains 46 chromosomes then the egg or sperm (gametes) would contain only 23 chromosomes.
Explanation:
Half of the chromosomes (23 each) belong to one parent
Answer:
23 Chromsomes
Explanation
Thus, if a skin cell or somatic cell contains 46 chromosomes then the egg or sperm (gametes) would contain only 23 chromosomes
3. What sedimentary rock is made up of pieces
of shells?
4. What are two types of sedimentary rock?
Coquina is the sedimentary rock is made up of pieces of shells.
Two types of sedimentary rock: Clastic and chemical sedimentary rocks
Explanation:
Coquina is the sedimentary rock formed by fragments or pieces of shells of marine animals like mollusks, brachiopods, trilobites and certain invertebrates.
The shells of marine animals are fragmented due to abrasion and mechanical degradation and sorting by the wave action and chemicals present in the sea water and gets transported which then sediments to form rock structures called coquina. The shells mostly contain calcium carbonate.
Chalk is the sedimentary rock formed b the fossil shells fragmented from foraminifers. This is a more powdery type of limestone.
Depending upon the type of sedimentation, sedimentary rocks are of three types:
Clastic – Made from sedimentation of clastic (pieces from broken rocks) through the processes of mechanical weathering and lithification (cementing and compacting). sandstone, conglomerate
Chemical – Made from evaporation of water and precipitation of materials which were previously dissolved in a solution. Example: Rock salt, dolomite
Organic – Repeated accumulation and sedimentation of organic matter or remains from plant and animal sources like bones (calcium deposits). Example: coal.
Describe the crimes that the history detectives are investigating in the video
Answer:
They are evaluating a crime that had previously beem done in the 1800s.
The history detectives are searching for the murderer of the texas servant girls. This unknown murderer murdered six African American servants and two white women in a brief phase of time. It was really difficult to conclude if the atrocity was committed by a serial killer or if the atrocity was carried out by a group of persons.
The murderer held and led the women captive from there beds at the dead of the night and led them to a remote location where they were then murdered with a sharp substance, something similar to an axe. A vast majority of the women were sexually abused after they had been held and led captive away from their rooms.
What process results in the production of new somatic cells during periods of growth or repair
Answer:
Cell division
Describe four ways that Vincent maintains his genetic identity?
Answer:
I dont know who vincent is
Explanation:
When does a skydiver achieve terminal velocity?
Answer:
Based on wind resistance
Explanation: took the test
1. What realization did Dr. Natterson Horowitz come to due to her work as both a cardiologist at
UCLA and a contractor who helped the Los Angeles Zoo? What question did that raise in her
mind?
Answer:
that animals and humans are really closely related, as well as that helping treat animals with diseases can help treat humans with the same disease, The questions that raise in her mind is that physicians and veterinarians are similar but physicians only work with humans and veterinarians work with all kinds of different animals.
Explanation:
Dr. Natterson-Horowitz realized through her diverse work experience that human and animal health are closely connected. She wondered why there wasn't more collaboration between medical doctors and veterinarians. Her observations led to the discipline she calls 'Zoobiquity' which advocates for interconnected study of human and animal health.
Dr. Barbara Natterson-Horowitz, a cardiologist at UCLA and consultant at the Los Angeles Zoo, came to a profound realization that the health issues encountered in humans are not just confined to our species, but are widespread among animals as well. This raised a pivotal question in her mind: 'Why aren't medical doctors and veterinary doctors collaborating more closely?'
This realization led her to a new discipline she calls 'Zoobiquity'. In her work, she identified various diseases and conditions that are common to both humans and animals such as breast cancer, obesity, heart failure, and even mental health disorders. Her findings emphasized the need for interdisciplinary studies linking human and animal health, under the One Health initiative.
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how are sea cucumbers different from other exhinoderms
Answer:
Like all echinoderms, sea cucumbers possess both a water vascular system that provides hydraulic pressure to the tentacles and tube feet, allowing them to move, and a haemal system.
Answer: They are soft bodied and their leathery skin lack spines. They also have wart type things on their body.
Explanation:
Which is the function of the fovea?
It controls the amount of light entering the eye.
It provides the greatest detail of an image when light hits it.
It flips the image that is being viewed.
It changes the curvature of the lens to allow less light to enter.
Answer: It provides the greatest detail of an image when light hits it
The fovea is a part of the eye that provides high-resolution, sharp central vision. It is the region with the highest concentration of cones, the cells responsible for detailed color vision in good lighting. Light is most focused on the fovea, enabling it to provide the greatest detail of the image.
Explanation:The fovea is a part of the eye, located in the center of the macula, which is itself in the center of the retina at the back of the eye. The main function of the fovea is to provide high-resolution, sharp central vision, as it is the region with the highest concentration of photoreceptor cells known as cones. These cones handle color vision and detail when lighting is good. When light enters the eye, it is focused by the cornea, passes through the lens and then strikes the retina. The region that the light hits the most directly is the fovea, and it is there that it offers the greatest detail of the perceived image.
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How is lateral gene transfer different from the gene duplication that occurs during cell division?
Lateral gene transfer different from the gene duplication that occurs during cell division due to their different functions.
Lateral gene transfer different from the gene duplication that occurs during cell division because lateral gene transfer is the transmission of gene between two individual while on the other hand, gene duplication is to make copy of the original gene.
Lateral gene transfer is the transmission of genes between individuals without direct vertical inheritance from parents to their offspring whereas, gene duplication is the process by which a region of DNA coding for a gene is copied so we can conclude that lateral gene transfer different from the gene duplication that occurs during cell division due to their different functions.
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Final answer:
Lateral gene transfer (LGT) involves the transfer of genes between unrelated species, contributing to rapid adaptation and evolution, particularly in bacteria. In contrast, gene duplication occurs within an organism during cell division, leading to additional gene copies that may evolve new functions over time. While both processes increase genetic complexity and contribute to evolutionary innovation, their mechanisms and implications differ significantly.
Explanation:
Lateral gene transfer (LGT) or horizontal gene transfer (HGT) is a remarkable process in which genes are transferred between unrelated species. This contrasts starkly with gene duplication during cell division, where genes within an organism are copied. LGT can dramatically influence the genetic composition and evolutionary potential of organisms by introducing entirely new genetic material. For example, LGT has played a critical role in bacterial evolution, allowing species to adapt rapidly by acquiring genes that confer beneficial traits such as antibiotic resistance.
On the other hand, gene duplication is a process occurring within an organism, often during cell division. Gene duplication can result from errors in DNA replication or meiotic crossing over, leading to the creation of additional copies of a gene. These duplicate genes can diverge over time, potentially fulfilling new roles within the organism. Such duplication events contribute to genetic diversity and complexity, serving as important engines of evolutionary innovation within species.
While both processes add to genetic complexity, their mechanisms, sources of genetic material, and evolutionary implications are distinct. LGT involves the transfer of genetic material between different species, often providing immediate adaptive advantages, while gene duplication involves the internal replication of genetic material within an organism, offering potential for new functionalities over evolutionary timescales.
Epithelial cells neurons blood cells muscle cells conduct electrical impulses; allow body to react to stimuli
Answer:
Neurons are responsible for the conduction of electrical impulses that allow body to react to stimuli. Neurons are basic structural and functional unit of nervous system. Neurons consist of three body parts i. e. Dendrites, a cell body and axon. Neurons transmit data or information from nervous system to the organs and from organs to nervous system. There are three types of neurons i. e. sensory neurons, motor neurons and interneurons.
What is the definition of stem cell ?
Answer: Cells of the body that can divide and become differentiated.
Explanation:
Which is true about atoms?
A. They are extremely large.
B. They can be broken down
C. They are extremely small.
D. They are only in solids.
Answer: I would say its C.
Explanation: An atom is the smallest unit of matter that retains all of the chemical properties of ... Some elements follow the English term for the element, such as C for carbon and ... Gold atoms cannot be broken down into anything smaller while still retaining ... only about 1/1800 of an atomic mass unit, so they do not contribute much to ...
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Which abiotic factor in tropical forests do boreal forests lacks
Answer:
They are cooler and drier than tropical rain forests. Abiotic factors, or nonliving factors, of a temperate rain forest include temperature, water, cloud cover, soil and light. These abiotic factors interact with biotic, or living factors, to form the rain forest's unique ecosystem.
The tropical rainforest biome is made of tall trees and has a wet climate type. The Boral forest is temperate forest biomes and has cool climate.
The tropical forest has a higher leaf litter and the sunlight is available in less quantity. The boreal has less leaf litter and more sunlight. Hence the tropical forest has a high quantity of humus and more organic matter as compared to the boreal forests.Learn more about the factor in tropical forests do boreal forests lack
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What is homeostasis? (
A.the maintenance of a relatively stable internal environment
B.the release of signals that cause body cells to increase their activity
C.a type of body temperature regulation that depends on the external environment
D. a process in which the response to a stimulus causes a reaction that opposes the original stimulus
Homeostasis is the maintenance of a relatively stable internal environment in organisms. It works through a series of feedback mechanisms to counteract changes and bring the internal environment back to its optimal state. This process is described by option D.
Explanation:Homeostasis is the maintenance of a relatively stable internal environment in organisms. It is a vital process that allows organisms to function properly, despite changes in the external environment. For example, when an organism gets too hot, homeostasis regulates body temperature by causing sweat to be released, which cools the body. Conversely, when an organism gets too cold, homeostasis triggers shivering to generate heat.
Homeostasis works through a series of feedback mechanisms. When a change in the internal environment is detected, a signal is sent to a control center, usually the brain. The control center then initiates a response through effectors, such as muscles or glands, to counteract the change and bring the internal environment back to its optimal state.
This process is described by option D, as the response to a stimulus causes a reaction that opposes the original stimulus. Option A also describes homeostasis accurately as the maintenance of a relatively stable internal environment. Option C, body temperature regulation depending on the external environment, is not an accurate definition of homeostasis as it focuses on one aspect of the process.
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what is a hydrogen bond and why is it not a true bond
Answer:
Hydrogen bond: It is a type of bond which exist between hydrogen atom and other atom having high value of electronegativity. Those atoms having high electronegativity values has the capability to attract the shared pair of electron towards itself. Hydrogen atom have very low value of electronegativity, so the shared pair of electron goes farther from it and nearer to high electronegative atom such as oxygen in water molecule. This bond is very weak than covalent bond.
It is not true bond due to weak force of attraction between atoms.
Bile salts, from the liver and stored in the ball bladder, will__________
the lipids, emulsifying them.
Bile salts, from the liver and stored in the ball bladder, will digestion
the lipids, emulsifying them.
Explanation:The digestive role of the liver is to build bile and transport it to the duodenum. Bile is essential in the emulsification of nonpolar fats in the aqueous small intestinal liquid.
Bile comprises bile acids, that remain vital for digestion and intake of fats and fat-soluble vitamins in the small intestine.The gall bladder is significant because of its storehouse and discharge of bile while digestion. when the small intestine senses the propinquity of food, the gall bladder will deliver the bile to emulsify fats while digestion.
Bile salts from the liver and stored in the gallbladder emulsify lipids, breaking them into smaller droplets. This process increases the surface area for enzyme action, making lipid digestion more efficient. Option A is correct .
Emulsification is the process where large lipid globules are broken down into smaller lipid globules. This occurs because bile salts have both a hydrophilic side, which is attracted to water, and a hydrophobic side, which is attracted to fats.
Thus, bile salts help in dispersing the lipids in the watery environment of the small intestine, increasing the surface area for the enzyme pancreatic lipase to act on. This process is crucial for the digestion and absorption of lipids.
Complete question :
Bile salts, from the liver and stored in the ball bladder, will__________ the lipids,
A. emulsify
B. denaturation
C. glycogenolysis
1.Where are red blood cells formed and destroyed?
Answer:
Red blood cells are formed in the bone marrow and destroyed in macrophages.
Explanation:
Which organism in this diagram is a tertiary consumer?
A. Shrimp
B. Phytoplankton
C. Person
D. Salmon
In the analyzed diagram, Salmon serves as the tertiary consumer due to its position as a predator of smaller fish, which are secondary consumers. This places Salmon at the top of the food chain. Here option D is correct.
Salmon is the tertiary consumer in the diagram:
1. Understanding Tertiary Consumers:
Tertiary consumers are organisms that eat secondary consumers. Secondary consumers, in turn, eat primary consumers, which eat producers (like phytoplankton).
Tertiary consumers are often at the top of the food chain and can be apex predators, meaning they have no natural predators themselves.
2. Analyzing the Diagram:
Shrimp: These are primary consumers as they directly eat phytoplankton, the producers.
Phytoplankton: These are producers that make their own food through photosynthesis.
Person: Humans are omnivores, meaning they eat both plants and animals. In this diagram, however, there's no indication of what the person eats. Considering the information presented, we can't definitively place them as tertiary consumers.
Salmon: These are large fish predators that mainly eat smaller fish, which are typically secondary consumers. Therefore, the salmon occupies the third level in the food chain, making them tertiary consumers.
Based on their position in the food chain and feeding habits depicted in the diagram, Salmon is the organism that fits the definition of a tertiary consumer. Here option D is correct.
Name all the steps in the water cycle 1 by 1
Answer:
evaporation,condensation,precipitation,and collection.
Explanation:
1. Identify three factors that contribute to slope stability
2. How is slump different from creep?
3. Explain some ways in which mass movement can affect wildlife.
4. Why might a rock slide turn into a rock avalanche?
5. Why are saturated sediments so weak?
Answer:
Three factors that contribute to slope stability are the strength of the materials, the angle of the slope, and the amount of water present.
Slump is a type of slide that occurs along a curved failure surface. The materials involved move as a single unit. Creep is a type of flow during which materials move down a slope slowly.
Mass movement can affect wildlife by blocking or rerouting streams, disrupting the habitats of fish and aquatic plants. It can also remove all the trees and plants from an area, creating habitat loss for birds and mammals that live in forests.
A rock slide involves a slab of rock that moves as a single unit. As the slab of rock gathers speed, it can shatter into many fragments, which begin to flow rather than slide. At this point, the rock slide becomes a rock avalanche.
Saturated sediments are weak because the large amount of water around each grain actually pushes the grains apart. This reduces the amount of friction between grains. This can make sediments very unstable and lead to slope failure.
Answer:
Three factors that contribute to slope stability are the strength of the materials, the angle of the slope, and the amount of water present.
Slump is a type of slide that occurs along a curved failure surface. The materials involved move as a single unit. Creep is a type of flow during which materials move down a slope slowly.
Mass movement can affect wildlife by blocking or rerouting streams, disrupting the habitats of fish and aquatic plants. It can also remove all the trees and plants from an area, creating habitat loss for birds and mammals that live in forests.
A rock slide involves a slab of rock that moves as a single unit. As the slab of rock gathers speed, it can shatter into many fragments, which begin to flow rather than slide. At this point, the rock slide becomes a rock avalanche.
Saturated sediments are weak because the large amount of water around each grain actually pushes the grains apart. This reduces the amount of friction between grains. This can make sediments very unstable and lead to slope failure.
Explanation:
Calculate 0.1 M CaCl2
Match the following terms and definitions.
1. short-term hormonal influences on animal behavior usually occurring late in life
habituation
2. a technique that associates a natural response to a stimulus to an unrelated stimulus; also called Pavlovian conditioning
classical conditioning
3. the study of animal behavior in its natural environment
activational effects
4. when an animal learns not to respond to a stimulus
insightful learning
5. finding a solution to a once unsolvable problem
ethology
6. learning that has taken place but is dormant until a situation requires it
latent learning
1. Short-term hormonal influences on animal behavior usually occurring late in life - activational effects
2. A technique that associates a natural response to a stimulus to an unrelated stimulus; also called Pavlovian conditioning -- classical conditioning
3. The study of animal behavior in its natural environment - ethology
4. When an animal learns not to respond to a stimulus - habituation
5. Finding a solution to a once unsolvable problem - insightful learning
6. Learning that has taken place but is dormant until a situation requires it - latent learning
Explanation:
Activational effects are the sudden or immediate temporary transient effects of behavioral changes due to the influence of hormones, especially the gonodal or the sex hormones. The behavior change in male animals due to increase in male sex hormonal activity can be referred as activational effect.
Classical conditioning facilitates learning of a behavior when a conditioned stimulus is associated with an unconditioned stimulus leading to a conditioned response. Animal training by pairing a new unconditioned stimulus with an already known conditioned stimulus, a new conditioned response of behavior change can be observed.
Ethology refers to the scientific zoological study (includes both laboratory as well as natural field studies) of animals behavior with relation to their natural environment. It studies and compares about animal behavioral processes changes under various disciplines like ecology, anatomy, evolution etc.
Habituation is an associative learning process that results when an animal learns to resist a stimulus and not to respond to it after repeated exposure.
Insightful learning occurs when various parts of a problem is analyzed and their relationship is understood to arrive at the solution suddenly. Animals must look at a situation as a whole, observe and analyze it to solve the problem. Some animals like chimpanzees can learn through insightful learning
Latent learning occurs without any associated reinforcements. Animals learn new behavior through latent learning.
The terms are matched with their definitions: Activational effects matches with short-term hormonal influences, Classical conditioning is related to Pavlovian conditioning, Ethology is the study of animal behavior in its natural environment, Habituation is when an animal learns not to respond, Insightful learning is finding a solution to a problem, Latent learning is learning that is dormant until required.
Explanation:The terms and definitions can be matched as follows:
Short-term hormonal influences on animal behavior usually occurring late in life corresponds to activational effects.A technique that associates a natural response to a stimulus to an unrelated stimulus, also called Pavlovian conditioning, refers to classical conditioning.The study of animal behavior in its natural environment is also known as ethology.When an animal learns not to respond to a stimulus, it's defined as habituation.Finding a solution to a once unsolvable problem is the definition of insightful learning.Learning that has taken place but is dormant until a situation requires it is termed as latent learning.Learn more about Animal Behavior here:https://brainly.com/question/33412478
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force which we witnessed after a sock and balloon were rubbed together.
Electrostatic Attraction
Explanation:
The force generated due to rubbing of balloon and sock is Electrostatic attraction force.In this type of force charges gets transferred from sock to Balloon.Due to this transfer of charges, Force is generated and it causes attraction of balloon and sock for a fraction of time.Hence, from the above discussion we can conclude that force of attraction exists between balloon and socksWhat two features would make humans good index fossils????
A Bird population nested along the banks of a river and fed off fish after new homes were built alongthe river the bird population declined. A change to which limiting factor was most likely responsible
Answer:
A - Space
Explanation:
2020 edge
A change to the space nearby is a limiting factor which most likely is responsible for the decline in bird population. Thus, the correct option is A.
What are the limiting factors?
A limiting factor is a variable of a system which causes a noticeable change in the output or another measure of a type of system. The limiting factor in an ecosystem is in a pyramid shape of the organisms which are going up from the producer organisms to higher consumers and so on.
Resources such as food, water, light, space, shelter and the access to mates are all the limiting factors. If an organism, group or the population does not have enough resources in the environment to sustain it, then the individuals will die eventually through starvation, desiccation and stress, or they will fail to produce offspring.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
A bird population nested along the banks of a river and fed off fish. After new homes were built along the river, the bird population declined. A change to which limiting factor was most likely responsible?
a. space
b. water
c. weather
d. sunlight
In the ecological pyramid, organism A represents a
Answer:
In an ecological pyramid, organism A usually represents a producer as it is the first part of a pyramid. Each food chain or food web begins with a producer. This is because producer organisms are able to produce their own food and hence bring in the energy for a food chain or a food web. Hence, it organism A is the first part of an ecological pyramid, then it will be producers which produce their food.
2 ) Amphibians:
A lay their soft-shelled eggs in water.
B lay their hard-shelled eggs on land.
C lay their hard-shelled eggs in water.
D lay their soft-shelled eggs on land.
E all of the above.
Answer:
i think its A
Explanation:
i mean frogs lay there eggs in water
Amphibians typically lay their soft-shelled eggs in water to protect them from drying out, which aligns with their dual life stages of living in water as larvae and on land as adults.
Explanation:Amphibians, a category of animals that includes frogs, toads, and newts, typically lay their soft-shelled eggs in water (Option A). This is because their eggs lack the hard, protective covering found in bird and reptile eggs, which leaves them vulnerable to desiccation, or drying out. Laying eggs in water helps keep them moist and viable. This is a significant characteristic of amphibians, which are known for their dual life stages: one in water (as larvae) and one on land (as adults).
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what is the oldest kingdom?
Answer:
the Imperial House of Japan was founded in 660 BCE by Japan's first Emperor, Jimmu, making it the oldest continuous hereditary monarchy
Explanation: