The heart is a muscular organ that pumps blood through the circulatory system. The blood containing waste materials returns to the heart through veins, entering the right atrium and then moving down to the right ventricle. The presence of the valves prevents the backflow of blood inside the heart
Blood containing waste enters the heart through the right atrium and moves to the right ventricle, where valves prevent backflow, ensuring proper circulation. These valves, located between the atria and ventricles as well as at the exit points of the ventricles (pulmonary and aortic valves), ensure one-way blood flow through the heart's four chambers and into the arterial system.
A fish whose streamlined body enables it to move easily in a current is most likely adapted to which aquatic ecosystem? ponds rivers lakes wetlands
Answer:
The answer is Rivers.
Explanation:
Currents are one of the most difficult situations for fishes, however, since this fish is adapted to it, rivers are the aquatic ecosystems with more currents, even more than the ocean. Rivers have currents all the time in all parts of it, although it could be faster or slower in some zones.
What is the process of glycolysis, including its reactants and products?
Glycolysis is the process of breaking down glucose in the cytoplasm of a cell into two molecules of pyruvate. The reactants required for glycolysis are glucose, 2 NAD+, 2 ADP, and 2 phosphate. The products are 2 pyruvate, 2 NADH, 2 ATP, and 2 water molecules.
Explanation:The process of glycolysis, a crucial part of cellular respiration, occurs in the cytoplasm of cells. It involves the breakdown of glucose, a six-carbon sugar, into two molecules of a three-carbon sugar.
The reactants involved in glycolysis are: a molecule of glucose, 2 NAD+, 2 ADP, and 2 phosphate.
The products of this process are: 2 pyruvate, 2 NADH, 2 ATP, and 2 water molecules. Glycolysis is an anaerobic process that provides cells with a quick source of energy, and it does not require oxygen to occur.
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when cement is produced, where is carbon released
Answer:
the process of making clinker the key constituent of cement that emits the largest amount of CO2 in cement making. World cement production generated around 2.2 billion tonnes of CO2 _ equivalent to 8℅ of the global total
By that of my explanation i think you will get it
What two nervous systems balance each other to provide homeostasis?
O
A. Parasympathetic and sympathetic
O
B. Central and peripheral
O
c. Central and sympathetic
D. Somatic and parasympathetic
Answer:
Parasympathetic and sympathetic -A.
Answer: The correct answer is: [A]:
_________________________________________________
→ " parasympathetic and sympathetic " .
_________________________________________________
The 2 (two) "nervous systems" that balance each other to provide "homeostasis" are:
_________________________________________________
1) the "parasympathetic" nervous system ; and:
2) the "sympathetic" nervous system.
__________________________________________________
Hope this answer is helpful to you!
Wishing you the best in your academic endeavors
— and within the "Brainly" community, as well!
__________________________________________________
In Ecology, how are organisms grouped?
A. Organisms are grouped by community
B. Organisms are grouped by population
C. Organisms are grouped by species
Answer:
C. Organisms are grouped by species
Explanation:
In Ecology, organisms are grouped by species.
Enzymes act as catalysts because _________.
A. they raise the activation energy
B. they lower the activation energy
C. they use activation energy
D. they maintain activation energy
Answer:
B.they lower the activation energy
Explanation:
activation energy is the minimum energy required in order to proceed the chemical reaction
The overall take-away of an experiment's results is the
•
•
•
•
A. introduction
B. analysis
C. conclusion
D. hypothesis
Answer:
C. conclusion
Explanation:
A conclusion summarizes the result of an experiment
Answer: C. conclusion
Explanation:
An experiment is the process of obtaining new findings by application of a methodology. The experiment can be used to either support, validate or refute the set hypothesis or to answer a scientific question. It may vary in scale or goal.
A conclusion is the last part of the experimental report. The conclusion is the overall take away of an experiment's results as it supports the results of the experiment by the theory or principle of the experiment. It suggests that the experimental findings or results match or prove the set hypothesis.
For DNA to be passed on to a later generation an organism must
Answer:
Reproduce.
Explanation:
For DNA to be passed on to a later generation an organism must, reproduce.
Answer:
Reproduce
Explanation:
What would happen to the size of the lion population if elephants usually won this competition
The lion population would decrease if elephants usually won competitions due to their impact on food availability and ecosystem dynamics, showcasing the interconnectedness of species within an ecosystem.
The lion population would likely decrease if elephants usually won competitions due to the impact on food availability and ecosystem dynamics. In the Addo Elephant National Park, the introduction of lions resulted in a significant predation on African buffalo, affecting the population demographics and behavior.This situation exemplifies how changes in predator-prey dynamics can influence wildlife populations, highlighting the interconnectedness of species within an ecosystem.The decline in African elephant populations due to factors like habitat loss and poaching further underlines the importance of considering various factors in wildlife conservation efforts.
What evidence did Darwin use to support his theory of evolution? Check all that apply.
in-depth studies of individual organisms
observations of fossils
finches on different islands had different types of beaks
young finches that acquired desirable traits as they aged
observations of different species with varying traits
Darwin used observations of fossils, variances in finches' beaks across different islands, and the diversity of traits among different species to validate his theory of evolution. These evidences solidified the basis for his concepts of natural selection and adaptive evolution.
Explanation:Charles Darwin used various forms of evidence to support his theory of evolution. This evidence played a critical role in the establishment of evolutionary biology as a valid scientific discipline. Key sources of evidence included observations of fossils, the noticeable difference in finches' beaks on different islands, and his vast observations of different species with varying traits.
His fossil observations allowed Darwin to perceive evolutionary change over long periods of time. The finches displayed how species could adapt in response to environmental factors, such as food availability, which impacted the form and function of their beaks. Moreover, his observations of diverse species exhibited the capacity of life forms to develop different characteristics in response to their circumstances, further grounding his argument for natural selection and adaptive evolution.
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Determine which of the following characteristics are environmental, not inherited.
I. Weight
II. Blood group
III. Language spoken
IV. Eye color
Answer:
Environmental characteristics (not inherited): Weight and Language spoken.
Explanation:
Environmental characteristics are traits or features that are primarily influenced by external factors in an individual's environment rather than being inherited through genes. For example, weight can be influenced by factors such as diet, exercise, and lifestyle choices. Language spoken is another environmental characteristic as it is learned from the surrounding culture and the community a person grows up in. These characteristics can vary significantly among individuals based on their unique experiences and interactions with their environment.
What determines an atom's chemical properties?
A.the number of protons in its outermost shell
B.the number of electrons in its outermost shell
C.the number of neutrons in its nucleus
D.the number of electrons in its nucleus
Answer:The right choice is B
Explanation:
3. Which of these substance has a brown color and is
detected by the spectrophotometer in our reaction?
A) Guaiacol
D) Tetraguaiacol
B) Peroxidase E) Hydrogen peroxide
C) buffer
Answer:
E) Hydrogen peroxide
Explanation:
Hydrogen peroxide is the substance that has a brown color and is detected by the spectrophotometer in our reaction.
Final answer:
A) Guaiacol is the substance that turns brown in the reaction involving hydrogen peroxide (H₂O₂) and is detected by the spectrophotometer. It serves as a reducing agent in the enzymatic breakdown of hydrogen peroxide by turnip extract peroxidase.
Explanation:
The substance that turns brown when detected by the spectrophotometer in the reaction involving hydrogen peroxide (H₂O₂) is guaiacol. In the process where turnip extract is used as a source of peroxidase, guaiacol serves as a reducing agent. When oxidized by the enzyme catalyzed reaction which breaks down hydrogen peroxide into water and oxygen, guaiacol transforms into a brown color. This brown coloration is a direct result of the enzymatic activity and is measured using a spectrophotometer for quantitative analysis.
16. Is a bear an ENDOTHERM or ECTOTHERM?
Answer:
Endotherm which basically means that they can create heat from within themselves
The sun rotates
O
A. around Earth once per year.
O
B. at different speeds along its sphere.
O
C. every 31 days.
O
D. once per year.
Answer: B
Explanation: the sun is made of gas, which doesn't all spin together at the same speed like a solid rock would.
The sun rotates at different speeds along its sphere, a phenomenon known as differential rotation. The rotation period near the sun's equator is about 25 days and increases with latitude.
The correct answer to the question of how the sun rotates is B. at different speeds along its sphere. This phenomenon is known as differential rotation. Unlike a solid body like Earth, the Sun, being a gaseous body, does not rotate at a uniform speed. At its equator, the Sun's rotation period is about 25 days, but this rotation period increases with latitude — being around 28 days at latitude 40°, and up to 36 days near the poles. Galileo discovered this by observing sunspots and their movement across the Sun's disk, indicating that the Sun does indeed rotate on its axis.
Andrea wants to understand the impact of the fragmentation of habitats on wildlife species. Which method will help Andrea with her study?
A assisted reproduction
B. camera trapping
C. genome conservation
D. ecosystem modeling
Answer:
D. Ecosystem modeling.
Explanation:
Andrea wants to know the impact that habitat fragmentation has on wildlife. If we think about it, she is studying an ecosystem: habitat + wildlife. Therefore, it is easy to conclude what the answer is. Plus, when we study damage on habitats that bring negative effects to wildlife, we're directly studying the damage of an ecosystem.
Ecosystem modeling is the creation of an ecosystem model, to understand an study what happens in the real ecosystem.
Hope it helped,
BiologiaMagister
what is the meaning of life (do not answer with 42 lol)
The meaning of life can be thought of as a subjective question. A subjective is a question that varies from each person so each person has a different perspective on it. I believe that the meaning of life is how you handle it. in other words, you can decide how you want to live your life and nobody can stop you from doing what you want to do.
Label the steps for protein synthesis in order, beginning with the first step
The steps for protein synthesis in order are:
1. Copy of one side of DNA strand is made (called mRNA, messenger RNA)
2. mRNA moves to cytoplasm, then ribosome.
3. mRNA goes through ribosome 3 bases at a time.
4. transfer RNA (tRNA) matches up with the open DNA bases.
5. tRNA releases the amino acid at the top, which joins the chain of amino acids being produced.
Answer:
Steps of protein synthesis:
1) DNA double helix unwinds into a single strand and exposes a sequence of nitrogenous bases, this is also known as the unzipping process.
2) Transcription: In this process, DNA transfer the genetic instruction to mRNA in the nucleus.
3) Translation: In this process mRNA couples the ribosomes & tRNA helps to bring amino acids to ribosomes. This process is known as Initiation.
4) Elongation: Anti-codons present on tRNA recognizes codons present on mRNA.
5) Termination: In this step when the stop signal on mRNA is reached, the process of protein synthesis is terminated.
A scientist uses a simulation because it:
A. Provides the most meaningful type of information
B. Costs less money than a real experiment
C. Is more fun than making measurements in the natural world
D. Can help make sense of a difficult problem
Answer:
The correct answer would be option D, Can help make sense of difficult problems.
Explanation:
In simple words, simulation is the Model. Simulation is the imitation of some procedure or method or process or situation. We can say it deception as well. Simulation is used as a method of analysis. When there are complex situations or processes that need to be tested before launching into the general public or to be used in the scientific researches or anything, Simulation is used. Simulation imitates the situation, checks for any errors, experiments the inputs and see the outputs of the process, method, system, etc, which they have developed. So A scientist uses simulation because it can help make sense of difficult problems.
Answer:
ANSWER IS D.
Explanation:
Have an nice day :)
Describe how different types of solutes dissolve in water
Water is a polar solvent. The different types of solute dissolved in water due to dipole-dipole interaction, and ion-dipole interaction.
What are solutes and solvents?The substance that dissolves in water are called solutes and the substance in which solutes are dissolved is called the solvent. Polar substances dissolve in polar solvents while nonpolar substances dissolve in nonpolar solvents.
Water is a molecule where one oxygen is bound to two hydrogen atoms. Water is called a universal solvent because it allows a wide range of molecules to dissolve in it. Ionic compounds and polar molecules are dissolved in water.
Common examples of some substances that dissolve in water are sugar, salt, glucose, ammonia, and methanol.
Therefore, the different types of solute dissolved in water due to dipole-dipole interaction, and ion-dipole interaction.
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enzymes act as catalysts because___
Answer:
Explanation:
Enzymes are macromolecular biological catalysts that accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products
__ is the second step of photosynthesis
.A. Chemiosmosis
B. Photophosphorylation
C. Capturing sunlight
D. Harvesting electrons
Answer:
C. Capturing sunlight
Explanation:
Capturing sunlight is the second step of photosynthesis .
Food employees must wear clean outer clothing to prevent
contamination of:
A. Potable water supply
B. Wall surfaces
C. Handwashing lavatories
D. Food
Answer:
D. Food
Explanation:
Food employees must wear clean outer clothing to prevent contamination of food.
Food employees must wear clean outer clothing to primarily prevent contamination of food. This is part of essential food hygiene and safety practices to ensure food is safe for consumption.
Explanation:Food employees are required to wear clean outer clothing primarily to prevent the contamination of food. Wearing clean clothes helps to minimize the risk of bacteria, dirt, or other harmful substances being transferred from the clothing to the food. Hence, it's a fundamental part of food hygiene and safety practices.
Contamination of the potable water supply, wall surfaces or hand washing lavatories, although important to prevent, are not primarily related to the requirement for food employees to wear clean outer clothing. The main concern is to assure the food they are handling remains safe and clean to consume.
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1. What is microevolution?
A genetic changes among and within populations
B evolution of new species
C major changes in populations over a long time
D changes in a population's allele frequencies
Answer:
A. Genetic changes among and within populations
Explanation:
Macro evolution is the theory that animals evolved over time into new species while micro evolution is more minute changes within a species, like a genetic mutation to help the species adapt to their environment. An example would be of a genetic mutation in the fur color of bears to make different types of bears like black bears, brown bears, polar bears, etc
Answer:
genetic changes among and within populations
Explanation:
Which of the following describes a solution that contains a buffer?
A. Sodium hydroxide, a base, is added to the solution, and the pH of
the solution becomes higher.
B. Distilled water is added to the solution, and the pH of the solution
does not change.
C. Acetic acid is added to the solution, and the pH of the solution
becomes lower
D. Citric acid is added to the solution, but the pH of the solution does
not change.
SUBMIT
Answer:
D
a buffer is an ionic compound that resists change in ph hence no ph change on addition of an acid proves the presence of a buffer which is different when distilled water is added because it is neutral hence no increase or decrease in ph
Answer:
Citric acid is added to the solution, but the pH of the solution does not change.
Explanation:
What do cellular respiration and fermentation have in common? They both occur in the mitochondria, they both Harvest energy from sugars, they both require oxygen to occur, they both end up with pyruvic acid.
Answer:
Fermentation and cellular respiration are alike in that they both begin with a series or reactions known as glycolysis, which breaks glucose molecules into smaller pyruvate molecules. They are also similar in that during both processes ATP is produced for the cell to use.
Hope it helps.
Answer:
They both harvest energy from sugars.
Explanation:
Cellular respiration and fermentation are reactions of the energy metabolism of organisms, which aims to obtain energy for metabolic reactions from the breakdown of glucose (sugar) in ATP. ATP keeps in its phosphate bonds energy that will be used in metabolism. This nucleotide is the energy currency of the cell.
Which options identify the main ocean zones? Check all that apply. deep
intertidal
neritic
open-ocean
surface
Answer:
Deep, neritic, and open ocean.
Answer:
The answer is Intertidal, Neritic and Open-ocean.
Explanation:
The main ocean zones are:
Intertidal zone = It is the closest to the coast. In high tide it is covered with water, and at low tide it is exposed to the air. Neritic zone = It is located on the continental shelf, the water is not very deep and many nutrients and sunlight are found. Open ocean zone = It is the ocean beyond the continental shelf where water is very deep and nutrients may be scarce.give three other environmental factors that would increase the rate of water loss from plants
Answer:1)Temperature 2)Wind 3)Humidity 4)Light:plants tend to transpire more rapidly in light than in the dark.
Explanation:
What is used to support a claim made by a product?
A. Exceptions
B. Bias
C. Evidence
D. Warnings
Answer:
C Evidence
Explanation:
Molds, casts, coprolites, and petrified wood are all example of
Answer:
Molds, casts, coprolites, and petrified wood are all examples of fossils.
Explanation:
Molds are fossils formed by the authigenic preservation of an organism- it is covered gradually in mud or silt which hardens into rock leaving indents there after it has decayed. Similarly, casts are mineral deposit filled casts, which produce fossilized copies of the organism. Coprolites, fossilized fecal matter, are a type of trace fossil, which provides records the presence, diet and other habits of the organism in an area by its preserved excrement. Petrified wood,like molds and casts are mineralized, however the differs from molds as it has not undergone decay.
The correct answer is fossils.
Molds, casts, coprolites, and petrified wood are all examples of fossils. Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. Here's how each of the given examples fits into the category of fossils:
- Molds are fossils that form when an organism's body decays completely, leaving a hollow space in the rock that is the exact size and shape of the organism.
- Casts are fossils that occur when the hollow space left by a mold is filled with minerals, creating a replica of the organism's body.
- Coprolites are fossilized feces that provide information about the diet and behavior of ancient organisms.
- Petrified wood is formed when the organic remains of a tree are replaced by minerals, turning the wood into stone. This process preserves the original structure of the wood in fine detail.
Each of these fossil types provides valuable information about the biology and ecology of past life on Earth.