Which scientist would agree with this statement: Giraffes all had short necks originally. Individual giraffes stretched their necks for food. The "acquired" long necks from stretching were then passed on to the offspring. The giraffe population became long-necked please help I need to figure out which scientist it is
Answers
Answer:
Jean-Baptiste de Lamarck
Explanation:
His two principles were "use and disuse" and "inheritance of acquired characteristics." The latter is what the statement is referring to.
Answer:
Lamarck
In the case of a giraffe, Lamarck believed that giraffes once had short necks that got progressively longer as members of each subsequent generation stretched their necks as long as they could. In doing so, Lamarck believed that each generation would grow slightly longer necks and pass that trait onto their offspring.Jan. 16, 2018
Explanation:
Related Questions
A patient has a blood vessel in the heart that is 90% blocked by plaque. Which of the following are likely consequences?
decreased blood flow and increased blood pressure
increased blood flow and increased blood pressure
increased blood flow and decreased blood pressure
decreased blood flow and decreased blood pressure
Answers
Answer:
decreased blood flow and increased blood pressure
Explanation:
because it's the most best answer
The COVID-19 virus has mutated so the different variants have caused additional surges in daily deaths. Fortunately, vaccinations have helped to mitigate the effect of these surges. The U.S. CDC (Centers for Disease Control) provides COVID data tracking. CDC a) Use the CDC site to show that NJ has had additional surges in daily COVID deaths since Figure 1.4. b) Cause-and Effect refers to the relationship between an event (the cause) that makes something else happen (the effect). Use the CDC site for NJ to show that Daily Cases and Hopitalizations are both leading indicators (causes) of Daily COVID Deaths (effect). [That is, an increase in these causes occurs before we see an increase in Daily deaths. ]
Answers
a) The CDC data shows that New Jersey (NJ) has experienced additional surges in daily COVID-19 deaths since Figure 1.4.
b) Daily cases and hospitalizations in NJ are leading indicators of daily COVID-19 deaths, demonstrating a cause-and-effect relationship.
a) By accessing the CDC data for New Jersey, it is evident that the state has witnessed additional surges in daily COVID-19 deaths since Figure 1.4. The data provided by the CDC allows for a comprehensive understanding of the impact of the virus in different regions, and in the case of New Jersey, it highlights the unfortunate reality of increased mortality due to the mutated variants of the virus.
b) The CDC data for New Jersey also reveals that daily cases and hospitalizations act as leading indicators of daily COVID-19 deaths. This implies that an increase in daily cases and hospitalizations occurs before a subsequent increase in daily deaths. These indicators serve as crucial warning signs, allowing healthcare professionals and policymakers to anticipate and respond to the potential escalation in fatalities.
Understanding the cause-and-effect relationship between daily cases and hospitalizations as leading indicators and daily COVID-19 deaths is vital for effective public health measures and resource allocation. It underscores the importance of early detection and intervention to prevent the further spread of the virus and minimize its impact on mortality rates.
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In an experiment, a researcher prepares a reaction mixture by dissolving a substance in a buffered solution. The substance is the substrate of a certain enzyme. The researcher adds a small amount of the enzyme to the reaction mixture and measures the amount of product that is formed over time. Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in Figure 1?
answer choices
The amount of product will decrease until the reaction rate goes to zero.
The amount of product will increase until the reaction reaches its equilibrium point or until the substrate is used up by the reaction.
The amount of product will increase without stopping because the enzyme will be unchanged by the reaction.
The amount of product will decrease until the reaction reaches its equilibrium point or until the enzyme is been used up by the reaction
Answers
Until equilibrium is reached or all of the substrate has been eaten, the amount of product will continue to increase.
How can the rate at which an enzyme-catalyzed reaction occurs be determined?It is possible to identify enzyme catalysis by measuring the appearance of the product or the disappearance of the reactants. The same reactants may be used in a reaction, but a different catalyst may produce different results.
Which of the following would speed up how quickly reactants turn into products in a chemical reaction?The more the temperature rises, the more crashes occur. As a reactant's concentration rises, the likelihood of reactant collisions increases as well, accelerating the rate of the reaction.
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if several pea plants with the TTYy are crossed withe genotype Ttyy, what percentage of the offspring will be expected to have the TTYy combination?
Answers
Hope this helps!
The arterial PO2 in a person with anemia will be _______ the arterial PO2 in a person with a normal hemoglobin concentration.
Answers
The arterial PO₂ in a person with anemia will be lower than the arterial PO₂ in a person with a normal hemoglobin concentration.
This is because anemia is a condition in which the number of red blood cells and/or the amount of hemoglobin in the blood is lower than normal. As hemoglobin is a protein responsible for carrying oxygen through the body, having fewer red blood cells and/or less hemoglobin means that less oxygen is transported throughout the body.
Having less oxygen in the blood leads to a decreased arterial PO₂. When the arterial PO₂ is lower the body is not receiving the necessary oxygen to function properly, leading to the common symptoms of anemia such as fatigue, shortness of breath, and lightheadedness.
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by what process are animal wastes and dead organisms convert
Answers
Animal wastes and dead organisms are primarily converted through a process called decomposition or decay.
Decomposition is carried out by various microorganisms, such as bacteria, fungi, and other decomposers, including insects and worms.
The process of decomposition involves the breakdown of organic matter into simpler compounds.
Decomposers like bacteria and fungi break down complex organic molecules into smaller molecules, such as sugars and amino acids.
These smaller molecules are then further broken down into simpler compounds like carbon dioxide, water, and various nutrients.
Decomposition occurs in several stages.
Initially, there is the breakdown of soft tissues, followed by the breakdown of tougher materials like bones and cartilage. During this process, energy stored in the organic matter is released, and nutrients are recycled back into the environment.
Decomposition is an essential part of nutrient cycling and plays a crucial role in ecosystem functioning.
It helps break down organic matter, returning nutrients to the soil or water, which can then be used by plants and other organisms.
It also helps to recycle carbon and other elements, maintaining a balance in ecosystems.
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A biotechnology researcher might work on what?
1. Creating biofuels
2. Designing new hospital beds
3. Testing blood for disease
4. Using MRI machines
Answers
Answer:
A biotechnology researcher might work on creating biofuels (First option).
Explanation:
A biotechnology researcher, or biotechnologist, has the ability and tools to use organic matter and living beings for the manufacture of products, applying the technology.
A biotechnologist can work in the agricultural industry, pharmaceuticals, or developing products for environmental protection, such as biofuels.
Biotechnology is a science applied to the manufacture of new and sustainable products, through molecular and biochemical research of organic material, plants and animals, for this purpose.
The other options are not correct because:
2. The design new hospital beds depends on hospital engineering.
3. Testing blood for diseases are performed by a bioanalyst or laboratory technician.
4. Using MRI machines is performed by a radiologist or radiology technician.
Answer:
A: Creating Biofuels.
Explanation:
Which two factors have the greatest influence on the amount of work needed for breathing?.
Answers
The two factors that have the greatest influence on the amount of work needed for breathing are lung compliance and airway resistance. Lung compliance refers to the ability of the lungs to stretch and expand during inhalation. If lung compliance is reduced, as in conditions such as pulmonary fibrosis, more work is required to inhale.
Airway resistance refers to the resistance that air encounters as it moves through the airways. Increased airway resistance, as in conditions such as asthma or chronic obstructive pulmonary disease (COPD), requires more work to be done during breathing.
In summary, lung compliance and airway resistance are the two main factors that influence the amount of work needed for breathing.
The two factors that have the greatest influence on the amount of work needed for breathing are lung compliance and airway resistance. Lung compliance refers to the ease with which the lungs can be expanded during inhalation, while airway resistance is the opposition to airflow due to the air passages' structure and size.
High lung compliance means that the lungs can expand easily, requiring less work for breathing. Low airway resistance allows air to flow freely in and out of the lungs, also reducing the work needed for breathing. Maintaining optimal lung compliance and minimizing airway resistance are essential for efficient breathing and conserving energy during respiration.
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DNA contains the instructions that cells need to make what organic compounds
Answers
Answer: develop, survive and reproduce
Explanation:
i. a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores
Answers
A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores, is called meiosis.
Meiosis is essential for sexual reproduction as it ensures genetic diversity and maintains the correct chromosome number in offspring. This process consists of two successive divisions, namely meiosis I and meiosis II, each further divided into several stages (prophase, metaphase, anaphase, and telophase). During meiosis I, homologous chromosomes pair up and exchange genetic material through a process called crossing over, resulting in recombination. This leads to the production of two haploid cells, containing half the number of chromosomes as the original parent cell.
Subsequently, meiosis II occurs, where sister chromatids separate, ultimately generating four genetically distinct haploid daughter cells. These cells can mature into gametes, such as sperm and eggs in animals, or spores in plants. In summary, meiosis is a vital process for producing genetically diverse haploid cells for sexual reproduction, ensuring the maintenance of the species' chromosome number and promoting genetic variation within populations.
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Which is the best example of amplification of signal?
Answers
Answer:
activation of 100 molecules by a single signal binding event
Explanation: i hope this help
I attached a image above
Answers
Answer:
D is correct
Explanation:
Phytoplankton are microscopic marine algae.
Phytoplankton, also known as microalgae, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow. Most phytoplankton are buoyant and float in the upper part of the ocean, where sunlight penetrates the water.
Zooplankton are a type of heterotrophic plankton that range from microscopic organisms to large species, such as jellyfish. Zooplankton are found within large bodies of water, including oceans and freshwater systems.
if you were a tilapia grower and you wanted to maximize your profit what water temperature
Answers
The best water temperature for tilapia is 82° to 86° F which causes increase in production as well as in profit.
What is the best water temperature for tilapia?The best temperature range for optimum tilapia growth is 82° to 86° F. Growth negatively affected when the temperatures goes below 68° F and death will occur below 50° F. At temperatures below 54° F, the resistance to disease in tilapia decreases and they are subject to infections from bacteria, fungi and parasites. While on the other hand, if the temperature exceeds from 90° F, the growth is also negatively affected.
So we can conclude that the best water temperature for tilapia is 82° to 86° F which causes increase in production as well as in profit.
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The greater the temperature difference between two temperature reservoirs, the more ________ can be done.
Answers
The greater the temperature difference between two temperature reservoirs, the more the greater the efficiency can be done.
A thermal reservoir, also thermal power reservoir or thermal bath, is a thermodynamic machine with a heat ability so large that the temperature of the reservoir modifications fantastically little while a far greater massive quantity of heat is brought or extracted.
In actual thermodynamic structures, expansive bodies of water which include oceans, lakes or rivers are taken into consideration thermal strength reservoirs because of their huge masses and high warmness capacities. The environment is also considered a thermal power reservoir.
Temperature is one of the thermodynamic houses of fluids that determines the kingdom of hotness or coldness of it. Temperature is measured in both Kelvin or Celsius or Fahrenheit. Kelvin is the most commonplace one that is used because of its independence from the houses of the substance.
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True/False? you can obtain glucose, needed by your body, by eating foods that contain starch.
Answers
True, we can obtain glucose needed by body by eating foods that contain starch.
Starch is a complex carbohydrate that is broken down into glucose molecules during the process of digestion. Glucose is a simple sugar that is an important source of energy for the body's cells, and it is used by cells for various functions such as energy production, growth, and repair. When starch is consumed, it is broken down into glucose in the small intestine by enzymes called amylases, which are produced by the pancreas and salivary glands.
The glucose is then absorbed into the bloodstream and transported to cells throughout the body where it is used for energy or stored for later use. Therefore, by eating foods that contain starch, the body can obtain the glucose it needs to function properly.
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What is reproductive isolation?Why is it necessary for speciation to occur? Explain one way reproductive isolation might occur.
Answers
Reproductive isolation is a process in which individuals in a population are prevented from reproducing. This isolation can occur in several ways, such as a physical barrier that separated these species into two groups that will reproduce with each other and generate a new species.
Why is it necessary for speciation to occur?Speciation is an essential evolutionary process for the creation of new species. It is worth remembering that from reproductive isolation, the individuals of a population have been differentiating and evolving and in the end, there will be a different species from the initial one. Therefore, speciation is necessary for the emergence of new species.
Explain one way reproductive isolation might occur.Reproductive isolation may occur due to a geographic barrier. In this case, a population is separated by a geographic barrier such as a river, a canyon, or a mountain, thus generating subpopulations that will begin to evolve and adapt in different ways. In the end, we will have different subpopulations, but in the beginning, they were part of the same population.
The images show fossils of a modern bird and two extinct organisms (a Tyrannosaurus rex and an Archaeopteryx). Based on the structure of the three organisms, it can be concluded that
. The Archaeopteryx and bird have wings, while dinosaurs have limbs. So, it can be concluded that
.
Answers
Answer: They have a common ancestor
Explanation:
If they have homologous structures then it is very likely that they evolved from a common ancestor.
what are the three domains in the new system of taxonomy.
Answers
Answer:Domain is the highest taxonomic rank in the hierarchical biological classification system, above the kingdom level. There are three domains of life, the Archaea, the Bacteria, and the Eucarya.According to this system, the tree of life consists of three domains: Archaea, Bacteria, and Eukarya. The first two are all prokaryotic microorganisms, or mostly single-celled organisms whose cells have no nucleus. All life that has a cell nucleus and eukaryotic membrane-bound organelles is included in Eukarya.
Explanation:
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Which of the following do ALL living things need in an ecosystem? select all that apply
matter
sunlight
energy
soil
Answers
Answer:
sunlight, energy
Explanation:
i dont really have an explenation
describe how a vaccine would work to prevent gonorrhoea
Answers
Explanation:
hope it helps.........
How long is the dna is found in a cells nucleus
Answers
Answer:
The length of DNA found in a cells nucleus is 3km. It is the equivalent distance of the Lincoln Memorial to the capital in Washington, DC.
Answer:6 feet long
Explanation:
Message me if I’m wrong
how does a jellyfish know when to sting? how does it respond when using the phagocytic cells?
Answers
a. A jellyfish know when to sting if a jellyfish feels threatened or comes into contact with its prey, the nerve impulses that trigger the nematocysts to fire are activated.
b. The jellyfish uses the phagocytic cells in response to the stimuli, that line its tentacles to capture and engulf its prey.
The phagocytic cells are specialized cells that help jellyfish capture and consume their prey. These cells, which are also known as cnidocytes, are located on the surface of the tentacles. They contain a specialized organelle called the nematocyst, which is the structure that injects venom into the target.
When a jellyfish touches a prey item, it triggers a stimulus that causes the phagocytic cells to activate the nematocysts. The nematocyst then fires, injecting the venom into the prey. After the venom is injected, the phagocytic cells engulf the prey and digest it using enzymes.
Jellyfish stinging is also a defence mechanism that they use to ward off predators. They can sense predators using their sensory structures, and they respond by firing their nematocysts, releasing the venom into their attacker.
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how is the movement of food through the esophagus most accurately characterized?
Answers
The movement of food through the esophagus is most accurately characterized as peristalsis.
Peristalsis is a coordinated, rhythmic contraction of smooth muscle that propels food through the esophagus and other parts of the digestive tract. The process begins when food is swallowed and enters the esophagus, a muscular tube that connects the mouth to the stomach. As the food moves down the esophagus, the muscles in the wall of the tube contract and relax in a wave-like pattern, pushing the food along.
This movement is controlled by the enteric nervous system, a complex network of neurons that spans the entire digestive tract. The nervous system sends signals to the muscles in the esophagus, telling them when to contract and when to relax. This process is involuntary and occurs automatically, without conscious effort.
Peristalsis helps ensure that food is moved efficiently through the digestive tract and is broken down and absorbed properly. If peristalsis is disrupted or slowed down, it can lead to problems like gastroesophageal reflux disease (GERD) or difficulty swallowing.
Overall, peristalsis is a crucial process that plays a key role in the functioning of the digestive system and the body as a whole.
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6. Photosynthesis can combat global warming. Explain with reasons.
Answers
Plants take carbon dioxide (CO2) out of the atmosphere to do photosynthesis, and thus help reduce the greenhouse gases warming the planet.
Explanation:
Plants, through photosynthesis, and soils sequester roughly a third of carbon dioxide emissions released into the atmosphere each decade from the burning of fossil fuels. During photosynthesis, plants open tiny pores on their leaf surfaces to suck carbon dioxide from the air and produce their own food.
ASAP
What does the ‘fluid’ part of the Fluid Mosaic Model mean?
A. The proteins float around in the membrane as if in a fluid.
B. The lipids are suspended in a fluid.
C. The membrane creates necessary fluids for the cell.
D. It is fluid because it is adaptable to change.
Answers
Answer:
A) The proteins float
Explanation:
The proteins float around freely
Due 23 October 2020 11:59
Instructions
Essential Questions:
How do we determine the weather of a particular location?
Answers
FROM SCHOLASTIC
energy flow through an ecosystem is blank
Answers
Answer:
i don't really know what you're asking. But, if you're asking what the main energy source is then it would be the sun.
Explanation:
All of the following statements are true about the relationships between [S], Km, Vo, and Vmax EXCEPT: A) As [S] increases, Vo gets closer to Vmax B) Vmax occurs when the enzyme is saturated with substrate C) Km is the [S] at which Vo = Vmax/2 D) Vo is closest to Vmax when [S] is less than Km E) None of the above b. Ubiquitin is a ________ that is attached to proteins that will be targeted for degradation in the _______. A) signal; lysozyme B) target; lysozyme C) protein; proteosome D) small molecule; proteosome E) None of the above
Answers
Substrate concentration raises Vo and continues to rise until it reaches V max, according to the graph of (S) versus Vo. When all enzymes are used up by substrates, Vmax is reached. When Vo equals 50% of V max, the substrate concentration is known as K m.
Vmax (maximum velocity) and Km (substrate concentration giving reaction rate of 1/2 Vmax) are indicated on the enzyme kinetics graph showing the rate of reaction as a function of substrate concentration.
Question B:
Proteosome, small molecule, or both .Ubiquitin is a tiny protein molecule that binds to a target protein and aids the proteosome in breaking down intracellular molecules.
By controlling protein degradation (via the proteasome and lysosome), coordinating protein localization, activating and inactivating proteins, and modifying protein-protein interactions, ubiquitination has an impact on cellular processes.
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(Systems in Action)
1 ) Work is energy in action, It is measured in
A ) Newton’s
B ) Joules
C ) Kilograms
D ) You can’t measure work
2 ) An ax is which type of machine?
A ) A first-Class lever
B ) A wedge
C ) A pulley
D ) An incline plane
3 ) True or False - There are two types of levers
A ) True
B ) False
4 ) 9.8N = ___kg
A ) 3kg
B ) 1kg
C ) 1.5kg
Answers
Answer:
1) D
2) B
3) True
4) B
Explanation:
What would happen to the water cycle if the sun ceased to exist?
O The water cycle would slow down.
The water cycle would stop.
The water cycle would speed up.
O The water cycle would stay the same.
Answers
Answer:
it would stop
Explanation:
since the sun is there to help evaporate the water. and i'm sure that without the sun, the water cycle would be the least of your worries