Answer
This cross will generate puppies with the genotypes of 25% BbNN, 25% Bbnn, 25% bbNn and 25% bbnn.
Explanation:
In this case the parent beetle has genotype BbNn and the mother beetle is bbnn. To solve this intersection, we have to remember Mendel's law of independent segregation and perform the traits intersections separately and multiply the percentages later.
1 - Characteristic of the exoskeleton: Bb x bb that gives us 50% Bb, 50% bb.
2 - Leg feature: Nn vs nn which gives us 50% Nn and 50% nn as well.
Finally, that means the cross of beetles have a chance to origin puppies with (0,5 * 0,5) in each different trait, resulting in the genotypes of 25% BbNN, 25% Bbnn, 25% bbNn and 25% bbnn
What is true of the population shown in the graph
A. The population is not changing much over time.
B. There are many factors at work to control the population
C. The population is growing unchecked.
D. The population has increased until it reached its carrying capacity
Which end of an earthworm contains an organ that can detect smells?
Worms have sense organs in the Anterior end of their body .
What is sense organ?
Sense organs are the specialized organs composed of sensory neurons, which help us to perceive and respond to our surroundings. There are five sense organs – eyes, ears, nose, tongue, and skin.
What is Anterior end ?
The anterior end presents the front side of the body near the head region.
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estudos apontam que o cerebro tem milhares de funçoes. qual a ciencial que estuda o cerebro?
Answer:k
Cognición y el cerebro
Aprendizaje y memoria
Margaret Semrud-Clikeman, PhD, LP, ABPdN, Facultad de Medicina de la Universidad de Minnesota
El cerebro comienza a madurar incluso antes del nacimiento. Aunque continúa madurando a lo largo de la mayor parte de la vida, el cerebro no madura al mismo ritmo en cada individuo.
Esto no debería sorprender. Después de todo, nuestros cuerpos crecen a diferentes ritmos: llegamos a la pubertad a diferentes edades y a nuestra madurez emocional en diferentes momentos también.
Explanation:
What does a completely filled circle represent on a pedigree chart?
Answer:
the most likely answer is C
Explanation:
broad-leafed trees in temperature zone lose their leaves?
a.to survive the extreme temperature of summer.
b.to survive a lack of rain in the dry season.
c.to survive colder seasonal temperatures.
d.to allow for greater penetration of sunlight.
Answer:
The correct answer is option c-to survive colder seasonal temperatures.
Explanation:
Broad leafed trees shed their leaves in autumn or winter season which is experienced with colder temperature.
These leaves are called deciduous leaves and shed their leaves because these leaves lack wax coating and anti-freeze chemicals due to which the fluid which flows through veins can be freeze by cold temperature so, plants to save the energy get rid of them.
Thus, option c-to survive colder seasonal temperatures is the correct answer.
An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. Humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive.
Discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.
The nervous system directly governs organs. The brain collects information from various organs and sends messages to keep them healthy. The skeletal system helps us move when our muscles contract.
What is the interrelationship of each organ with nervous system?Organ system communication is key to teamwork. They must respond to each other and vary their responses to maintain physical equilibrium. Autonomic nerve system and endocrine system control organ communication.
ANS controls involuntary functions. The ANS controls heart rate, blood flow, and digestion. You don't need to tell your heart to beat faster or squeeze muscles to digest meals. These functions aren't even worth considering. The autonomic nervous system controls them. Neurotransmitters deliver messages between nervous system sections and to other organ systems.
Endocrine glands secrete hormones into the bloodstream. Hormones in the blood circulate to all bodily cells. Hypothalamus controls the endocrine system. Hypothalamus hormones travel directly to pituitary gland cells. Pituitary is endocrine system's master gland. Its hormones activate or deactivate other endocrine glands. The pituitary gland secretes thyroid stimulating hormone, which stimulates the thyroid gland to secrete thyroid hormone. Thyroid hormone stimulates metabolism in bodily cells.
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Which of the following might be affected by the loss of a plant species?
a.
Only organisms that feed directly off the lost plant species will be affected.
b.
Other plant species will be affected, but no other organisms will.
c.
Multiple organisms may be affected by the loss of a plant species.
d.
No other organisms would be affected.
Answer:
c. Multiple organisms may be affected by the loss of a plant species.
Explanation:
We all know that all the animals on this earth depend upon plants for food either directly or indirectly because they can't synthesize their own food. Herbivores depend upon plants directly for their food whereas carnivores depend upon plants indirectly for their food. Carnivores hunt herbivores so if herbivores will exist then only carnivores will survive otherwise they will starve.
In this case, if herbivores particularly feed upon this plant species which is lost then the population of these herbivores will be reduced because there will be less food and the herbivores will compete each other for the food intraspecifically or interspecifically. As a result of which the carnivores feeding on such herbivores will also undergo same type of competitions and their population will get reduced too.
Apart from this certain type of plant plant interactions also exist in nature. If this plant species is lost then some other plant species may get benefited. When this particular plant species will get vanished then some other plant species will find ample space to grow and there will be less competition for food and water for them because of destruction of this plant species.
So, multiple organisms will get affected.
Where would you most likely find an organism that belongs to the domain Archaea?
Hot springs
Human gut
Moldy bread
Yogurt
Answer: Hot springs
Explanation: The kingdom Archaea consists of bacterial species which can survive very harsh conditions. These are the oldest organisms present on Earth. These bacterial species can be found in areas where other organisms can't exist. The extreme conditions where they can be found are- high salt content, hot water springs, in the ice at north pole, etc.
Answer:
IT IS NOT YOGURT IT IS HOT SPRINGS I DID THE 5.06 AND GOT 99 CAN YOU BELIEVE IT.
Explanation:
The main difference between heat and temperature is that temperature is solely dependent on the
What color does Spica appear to be? Why?
sorry I'm like 3 years late lol but
Answer:
Spica appears to be blue because of how hot the star actually is that is why Spica is blue
How do cells eliminate waste? Thanks for the help!
Which statements about particle movement in the image to the right are true? Check all that apply. They are moving from an area of high concentration to an area of low concentration. It requires energy. It occurs naturally by diffusion. It involves the help of carrier proteins.
Answer:
It requires energy
It involves the help of carrier proteins
Analyze the given diagram of carbon cycle below. Part 1: What is happening at location G? Part 2: Which type of energy transformation is taking place at this location? Part 3: Justify why this process is a recycling of carbon in the carbon cycle. Use complete sentences to explain your answer.
I need to figure out the answer
Which pair of chromosomes can contain two very different chromosomes and still be considered normal ?
The sex chromosomes, X and Y, in a human can be very different yet still considered normal. This is because they carry different sets of genes, unlike other chromosome pairs, yet are essential for determining the sex of an individual and facilitating sexual reproduction.
Explanation:The pair of chromosomes that can contain two very different chromosomes and still be considered normal are the sex chromosomes, specifically the X and Y chromosomes. Most chromosomes in a cell are homologous pairs, with each member of the pair inheriting from one parent, and these pairs contain almost identical genetic information. Yet, the X and Y chromosomes, which determine the sex of an individual, are an exception to this rule.
In humans, females have two X chromosomes while males have one X and one Y chromosome. Unlike all other chromosomal pairs, the X and Y chromosomes carry different sets of genes. They have a small portion of similarity - necessary for the accurate production of gametes - but overall their genetic content is vastly different. This different pair of chromosomes is entirely natural and normal in the context of sexual reproduction, and it's why males and females have different secondary sex characteristics.
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What makes up an owl pellet?
Answer:
c
Explanation:
Why is sludge dumping a threat to marine and human life?
Ans.
Sludge can be defined as the semi-solid waste produced by sewage treatment of municipal and industrial wastewater as a byproduct. Sludge dumping involves discharge if sludge into the ocean.
It contains various contaminating agents, such as pathogens, heavy metals, chemicals, such as pesticides, and other hazardous substances. 'Sludge dumping is a threat to humans and marine life as it can cause various diseases, pollute beaches, and kill marine organisms.'
Sara measured the amount of potassium nitrate (KNO3) that could be dissolved in 100 grams of water at different temperatures. She repeated the test five times. The data from Sara's experiment is listed in the table below.
Which of the following is the best inference Sara could make based on her data?
Answer:
The amount of KNO3 that can dissolve in water increases as temperature increases
Explanation:
Study island
As temperature rises, all three solutes become more soluble. The greatest significant increase in solubility is seen with potassium nitrate, which goes from about 30 g per 100 g water to over 200 g per 100 g water. Sodium chloride's solubility virtually ever varies.
What affect the solubility by increasing the temperature?The average kinetic energy of the solute molecules increases along with the solution's temperature.
As a result, the molecules have a lower ability to bind together and dissolve more easily. When temperature rises, solid states become more soluble.
Because some heat is dissipated during the dissolving process, the tension is reduced. Therefore, as the temperature rises, so does the solubility (concentration).
Therefore, Temperature increases cause an increase in the amount of KNO3 that can dissolve in water.
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How does the immune system protect the body against
Changes of the internal body temperature
Changing environmental conditions
Changes cause by harmful pathogens
Changes in the pH of the blood
Answer:
C. changes caused by harmful pathogens
Explanation:
Which of the following hereditary conditions is characterized by abnormally shaped blood cells? Acne. Heart disease. Sickle cell anemia. Type 1 diabetes.
Answer:
sickle cell
Explanation:
Answer:
Sickle cell anemia
Explanation:
Hemoglobin serves to carry oxygen and is present in red blood cells. Sickle cell anemia is caused by a point mutation in one of the hemoglobin gene that codes for its beta chain. The mutated allele of the beta globin chain encodes the abnormal hemoglobin molecules which stick to one another resulting in sickle shaped red blood cells.
what are disadvantages of using pesticides
Approximately how much of the energy available in the tissues of the producer is eventually incorporated into the tissues of a secondary consumer?
Which would be the impact on the environment if there were no estuaries
A. There would be a drought
B. There would be more pollutants in the ocean
C. There would be a decreased concentration of salt in the oceans
D. There would be less boating, fishing and swimming in local rivers
The absence of estuaries would result in increased pollutants in the ocean, harming marine life and water quality. Estuaries serve as vital natural filters and habitats for many species, and their loss would have significant ecological and economic impacts.
Explanation:If there were no estuaries, one of the impacts on the environment would be B. there would be more pollutants in the ocean. Estuaries act as natural filters trapping pollutants and sediments, which helps to maintain the quality of the ocean waters. Without estuaries, these pollutants would flow more freely into the ocean, leading to degraded water quality and potential harm to marine life. Furthermore, estuaries are areas where the salinity varies because they are transition zones between river environments and maritime environments. These habitats are essential for many species for part of or all of their life cycles, including commercially important fish species. The loss of estuaries can also affect the biodiversity of the area and disrupt the entire marine food chain.
The presence of estuaries is also significant for mitigating the effects of climate change. For instance, these environments can buffer against sea level rise and storm surges, protecting inland areas. Moreover, estuaries are important breeding and feeding grounds for many species of wildlife and are some of the most productive ecosystems in the world. Additionally, many human economic activities, like fishing and tourism, are directly linked to the health of estuary systems. Therefore, the disappearance of estuaries would not only affect ocean health but also the economy and well-being of human communities that depend on these biologically rich areas.
Wegener's theory of continental drift was largely dismissed by the mid-1900s. What new evidence was able to revive this theory, and why?
Continental ridges were found, suggesting that parts of the land used to be below sea level.
Sonar technology found mid-ocean ridges, where new ocean floor was being created.
The coastlines of South America and Africa were similar in shape, suggesting that they shared a common tectonic plate.
The mantle moves through radiation, suggesting that rock in the Earth is not solid.
Answer: Option (C)
Explanation: Wegener's theory of Continental drift was replaced by a modern theory called the 'plate tectonic theory'. This theory was able to prove what wegener could not and so was universally accepted.
The new evidences supporting this theory were-
The coastlines of east America and west Africa are similar in shape suggesting that they might have existed together once upon a timeSimilar fossils were found at different continents such as the glossopteris faunaSimilar rock sequences found at different places determined by the correlation methodHence the correct option that satisfies the above question is option (C)
Sonar technology found mid-ocean ridges, where new ocean floor was being created, played a crucial role in reviving Wegener's theory of continental drift. This discovery provided compelling evidence for the theory of plate tectonics, which superseded and expanded upon Wegener's original ideas.
the discovery of mid-ocean ridges using sonar technology was significant:
1. **Mid-Ocean Ridges**: Sonar technology allowed scientists to map the ocean floor in detail. They discovered the presence of vast underwater mountain ranges called mid-ocean ridges. These ridges are characterized by a long chain of mountains and valleys running through the ocean basins.
2. **New Ocean Floor Formation**: More importantly, scientists found evidence that new ocean floor was being created at mid-ocean ridges. This was observed through the study of magnetic striping on the ocean floor, where alternating bands of magnetic polarity aligned with the Earth's magnetic field. This phenomenon indicated that the ocean floor was spreading apart at these ridges, and new oceanic crust was forming as molten material from the mantle rose to the surface.
3. **Plate Tectonics**: The discovery of mid-ocean ridges provided a foundation for the theory of plate tectonics, which explained how the Earth's lithosphere (outer shell) is divided into large, rigid plates that move and interact with each other. This theory not only accounted for the movement of continents but also explained the formation and movement of mountains, earthquakes, and volcanic activity.
In summary, the revelation of mid-ocean ridges and the process of seafloor spreading observed through sonar technology provided strong empirical evidence for the theory of plate tectonics. This theory unified various aspects of Earth's geological phenomena and convincingly demonstrated that the continents were indeed moving over the Earth's surface, validating and revitalizing Wegener's earlier idea of continental drift.
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Where would you most likely find an organism that belongs to the domain Archaea?
Himan Gut. Moldy Bread. Hot springs. and yogurt.
Moldy bread is the answer
Peppered moths come in two colors, black and white. What did Kettlewell show, with regard to peppered moth populations and tree coloring? (Recall that England at the time was heated mainly by coal in urban areas.)
A) In smoggy areas, dark moths have a higher survival rate than white moths.
B) White moths stand out in rural areas, and quickly disappear from those areas.
C) The black moth and white moth forms were actually two different species of moths.
D) Environmental conditions do not affect physical features of a species over a short time period.
Answer:
A
Explanation:
In smoggy areas, dark moths have a higher survival rate than white moths.
When an abundance of lactose is present in a bacterial cell then
A. Lactose will block the action of RNA polymerase, Prohibiting of the transcription of the gene.
B. Enhancers will be triggered to speed up the process of mRNA production.
C. The lac operon Will be inhibited and no lactose will need to be produced via translation.
D. Lactose will bind to the
repressor, Allowing the gene coding for the enzyme lactase to be transcribed.
Answer:D
Explanation:Hope this helps
Final answer:
Lactose binds to the repressor, allowing transcription of the enzyme lactase. The lac operon system regulates gene expression efficiently, promoting the production of enzymes for lactose digestion only when lactose is present and thereby saving cellular energy. So the correct option is D.
Explanation:
When an abundance of lactose is present in a bacterial cell, the correct response is D. Lactose will bind to the repressor, allowing the gene coding for the enzyme lactase to be transcribed. In the lac operon system, the presence of lactose triggers the conversion of some lactose into allolactose, which then binds to the lac repressor. This interaction inhibits the repressor's activity, preventing it from binding to the operator region of the operon. With the repressor not bound, RNA polymerase can freely initiate the transcription of the lac operon genes, leading to the expression of enzymes that enable the digestion and utilization of lactose.
Essentially, the lac operon functions as an efficient regulatory system that ensures gene expression occurs only when necessary. In the absence of lactose, the lac repressor binds to the operator region, acting as a 'road-block' to RNA polymerase and preventing transcription of the lac genes. The system optimizes energy use within the cell by expressing genes only when their products are needed, which in this case, are enzymes for lactose digestion.
What is a hypothesis for a “How much sugar is in the drink” project. Question is how much is to much. Please help
Final answer:
A suitable hypothesis for a project on sugar content in drinks might state that Beverage B will have a higher mean amount of sugar than Beverage A, based on provided statistics. Additionally, it could hypothesize that exceeding daily sugar intake recommendations increases health risks.
Explanation:
A hypothesis for a project investigating how much sugar is in a drink could be framed around the specific question "how much is too much." A possible hypothesis might be "If the sugar content in Beverage A and Beverage B is analyzed, then Beverage B will have a higher mean amount of sugar than Beverage A." This hypothesis builds on the project's data indicating that Beverage A has a mean sugar content of 36 grams per can with a standard deviation of 0.6 grams, while Beverage B has a mean of 38 grams.
In the context of determining what volume constitutes excessive sugar consumption, it's important to consider health guidelines. Such a hypothesis could be "Consuming more than the recommended daily intake of sugar will increase the risk of health issues such as diabetes." This hypothesis aligns with studies and the National Health and Nutrition Examination Survey that report high rates of sugary drink consumption among Americans.
Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen.
Please select the best answer from the choices provided
T
F
Answer: True
Explanation:
Weathering is a process by which rocks or any other material get disintegrated into small sediments and parts under the influence of physical or chemical agents.
Frost wedging is a physical weathering process in which the water enters into the rock. The freezing of this water under the influence of cold external temperature condition can disturb the internal structure of the rock. This process will cause the disintegration of the rock into parts and small sediments.
20 points!!! _____________ water falls to the lithosphere and hydrosphere. PLZ HELP ASAP!