Answers
The Krebs cycle occurs in the matrix of the mitochondria and requires acetyl coenzyme-A (acetyl-CoA) that is produced from both lipids and carbs.
What is the Krebs cycle of cell respiration?The Krebs cycle of cellular respiration is the second step of this metabolic pathway which occurs in the mitochondrial matrix to generate NADH and FADH which are used during oxidative phosphorylation to produce ATP.
Therefore, with this data, we can see that the Krebs cycle of cell respiration is the second stage of this process and produces molecules required for ATP synthesis.
Learn more about the Krebs cycle here:
https://brainly.com/question/19290827
#SPJ1
Related Questions
Come up with your own story of a trophic cascade, describing how the organisms occupying the different trophic levels would be affected
Answers
Answer:
The leafhoppers eat plant tissues and, at the same time, they are eaten by spiders that are the food of large lizards. Finally, these lizards are the food of birds that are eaten by snakes.
Explanation:
The food chain starts with primary producers such as plants and algae (i.e., level 1), then goes through herbivorous species including insects and fish (level 2) and finally ends with carnivores such as rodents, snakes and hedgehogs (levels 3, 4 and sometimes 5, which depends on presence of larger predators). Thus, the trophic levels are represented by the number of steps of the food chain. In an ecosystem, the organisms can also be classified according to the mode of obtaining the food in producers (autotrophs), consumers (heterotrophs) and reducers (detritivores).
Can someone help me out with these questions pls
Answers
The correct answer is :
Large surface area for gaseous exchange to take place - c. Millions of alveoli present in each lung.
Diffusion of gases through cell surfaces is facilitated - e. Alveoli and capillaries have a one cell thick wall.
Distance for diffusion is kept short - e. Alveoli and capillaries have a one cell thick wall.
Steep concentration gradient is constantly maintained - d. Each alveolus has a thin film of moisture.
Quick access to the circulatory system - a. Each alveolus is closely surrounded by a network of capillaries.
The lungs contain millions of alveoli, providing a large surface area for gaseous exchange to take place. This large surface area ensures that there is enough space for the exchange of gases between the alveoli and the bloodstream to occur efficiently.
Learn more about alveolar exchange here.
https://brainly.com/question/29354337?
#SPJ1
Which of the following are ways humans have contributed to the rise in carbon dioxide in the lower atmosphere?
A. Through the burning of vehicle fuels
B. Through the use of fossil fuels in manufacturing
C. By clearing of the rainforest
D. All of the above
Answers
Answer:
it is D. all of the above
Explanation: all of these things contribute to rising carbon dioxide levels in the atmosphere
Answer: D. All of the above
evidence that two organisms share a common ancestor?
Answers
There are several lines of evidence that can indicate two organisms share a common ancestor:
Comparative Anatomy: If two organisms have similar structures, it suggests a common ancestral origin. Homologous structures, such as the pentadactyl limb (five-fingered limb) found in mammals, reptiles, birds, and amphibians, indicate a shared ancestry despite variations in function or form.Comparative Embryology: Studying the development of embryos can reveal similarities between organisms that indicate a common ancestor. For example, vertebrate embryos exhibit similar features at early stages, such as pharyngeal pouches, suggesting a shared ancestry.Fossil Record: Fossils provide direct evidence of organisms that lived in the past and can show evolutionary connections between species. Transitional fossils, like Archaeopteryx, which exhibits characteristics of both reptiles and birds, demonstrate a gradual transition between different groups of organisms.Molecular Biology: DNA and protein sequence comparisons can reveal the degree of similarity between organisms. The more closely related two organisms are, the more similar their genetic sequences tend to be. Molecular phylogenetics uses this information to construct evolutionary trees and determine common ancestry.Biogeography: The geographic distribution of organisms can provide evidence of common ancestry. For example, species on isolated islands often resemble closely related species on the nearest mainland, indicating a common ancestral source population.Genetic Homologies: Shared genetic information between organisms, such as the presence of specific genes or genetic markers, can indicate a common ancestry.Vestigial Structures: Vestigial structures are remnants of organs or traits that were functional in ancestors but have lost their original purpose in descendants. Examples include the human appendix or hind limbs in some snake species. The presence of these vestigial structures suggests a shared ancestor with organisms in which these structures are still functional.By examining and analyzing these various types of evidence, scientists can build a compelling case for the shared ancestry between different organisms, highlighting the evolutionary relationships that connect them.
for similar questions on common ancestor.
https://brainly.com/question/1234951
#SPJ8
In Wekiva State Park which spheres are present? Which would be part of the “biosphere” in this instance?
Answers
Answer:
Biosphere and hydrosphere.
Explanation:
In Wekiva State Park, biosphere and hydrosphere are present. it is a 7000 acres park where thousands of living organisms are found which refers to biosphere while on the other hand, Wekiva river is also present in which hundred of organisms are found which refers to hydrosphere. All living organisms such as plants and animals etc would be part of biosphere in this park.
Brainliest for the correct answer who put in the answer first. please help me.
Answers
Answer:
Dead bird
Explanation:
Biotic factors are anything that is alive or used to be living. Some examples are animals, trees, and parasites.
why is deoxygenated blood darker as compared to oxygenated blood?
Answers
Answer:
Because deoxygenated blood has Carbon dioxide in it while oxygenated blood has oxygen due to which it has a bright red colour
10. Are antibacterial-containing products better for preventing the spread of infection?
Answers
How does the energy move between two systems
Answers
Plzzz help with the one with the membrane picture
Answers
Answer:
1.) The solute molecules will not move between the two sides because the membrane does not have large enough spaces for the molecules to move through. The water molecules will move to the right side because water moves to places of a higher solute concentration.
2.) The right side represents high concentration because it contains the majority of the solute molecules.
3.) The left side represents low concentration because it contains a small amount of solute molecules compared to the right side.
Lab Report PLEASE HELP ME
Introduction
1. What was the purpose of the experiment?
2. What were the independent, dependent, and control variables in your investigation?
3. Write a hypothesis based on observations and scientific principles.
Experimental Methods
1. What tools did you use to collect your data?
2. Describe the procedure that you followed to conduct your experiment.
Data and Observations
1. Record your observations. Include the data table you created for the lab and a graph based on the data table.
Conclusions
1. What conclusions can you draw about the relationship between the temperature of a ball and its bounce height? Is there a direct or inverse relationship? Write an evidence-based claim.
2. What are some sources of error in your experiment? What are some ways that you could improve the accuracy and precision of the measurements?
Answers
Answer: Introduction
What was the purpose of the experiment?
Type your answer here: Hypotheses are ideas based on reasoning and can tested in an experiment.
• What were the independent, dependent, and control variables in your investigation?
Type your answer here: The independent is the variable you change, The dependent variable is the variable you observe to determine the impact of the independent variable, and control variable is the constant, which is something that is assigned a value, and it will not change in the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here: In an experiment, scientists test a hypothesis by changing and observing variables. A variable is a condition that may change. In an experiment, you usually change one variable to see how it affects another variable.
Experimental Methods
• What tools did you use to collect your data?
Type your answer here: Data can include measurements, such as the temperature of a mixture, or observations, such as the color of a substance. Data are used as evidence, Scientists collect data to determine whether the information coming from their experiments supports their hypotheses. Think of data as evidence. Data collected during the experiment are used as evidence to support or refute a hypothesis.
• Describe the procedure that you followed to conduct your experiment.
Type your answer here: Create a graph, label the axes , add tick marks, add data points,
Data and Observations
• Record your observations. Include the data table you created for the lab and a graph based on the data table.
Type your answer here: Data collection tools refer to the instruments used to collect data, such as a paper questionnaire or computer-assisted interviewing system. Case Studies, Checklists, Interviews, Observation sometimes, and Surveys or Questionnaires are all tools used to collect data.
Conclusions
• What conclusions can you draw about the relationship between the temperature of a ball and its bounce height? Is there a direct or inverse relationship? Write an evidence-based claim.
Type your answer here: Pressure is directly proportional to temperature when the volume is constant. This means that an increase in temperature will lead to an increase in pressure. Now, Pressure is Force/Area and so the higher the air pressure, the higher will be the force on the ball and consequently, the higher the ball will bounce. Likewise, the lower the temperature, the lower the pressure and thus the lower the height at which the ball will bounce. This means, we can conclude that since temperature is directly proportional to pressure and pressure is directly proportional to the height of bounce of the ball, the temperature of the ball is directly proportional to its bounce height.
• What are some sources of error in your experiment? What are some ways that you could improve the accuracy and precision of the measurements?
Type your answer here: All experiments are subject to various types of errors or variations. Even our spring experiment, although it was a simulation and really simple, relied on you making accurate measurements. If someone else did it, they might get slightly different results. In the real world there are many sources of error.
• The functioning of laboratory equipment may vary.
• Measuring devices may have limits to their capabilities.
• Other factors, such as the temperature and humidity of the room, might influence measurements and equipment.
Explanation:
define the concept risky behavior and explain why it is important for teenagers to investigate and be knowledgeable about it
Answers
Answer:
risk behaviour or risky behaviour is simply behaviour that runs the risk of the person and/or those around them being hurt or damaged physically, socially or emotionally.
Teenagers investigating it? It depends on what you mean by ‘investigating’. Investigating does not have to mean trying it out. Trying out certain drugs is too risky. On the other hand, trying out mountain bike tricks may be well worthwhile if they develop their manoeuvres in a staged way, starting from the easiest and safest and working up the scale as they master the easier stages one by one.
(1) Response to stimuli: Does the entity sense and respond to environmental change?
They just can reproduce when they are in the host
Answers
Answer:
Organisms need to detect and respond to changes in their internal and external environment. This is because the conditions inside our body must be carefully controlled for it to function effectively and survive. The control systems that allow organisms to respond to changes are incredibly important.
All control systems include:
Cells called receptors, which detect stimuli (changes in the environment).
The coordination centre, such as the brain, spinal cord or pancreas, which receives and processes information from receptors around the body.
Effectors which bring about responses, and restore optimum levels, such as core body temperature and blood glucose levels. Effectors include muscles and glands, and so responses can include muscle contractions or hormone release
Describe the general body morphology of a sponge. Then discuss some of a sponge's specialized cells, their function, and where they can be found. Using your best grammar, write 4-6 sentences
Answers
A sponge is an aquatic invertebrate animal with a diverse body structure, sponges are composed of specialized cells such as collar cells or choanocytes, and are found in the inner choanocyte layer.
The general body morphology of a sponge involves the presence of small pores or holes (ostia) on the body surface, which allow water to flow into the sponge. The water is then circulated inside the body of the sponge, which allows it to trap tiny organisms or organic particles for food consumption. They have a flagellum and collar-like structure that help to capture food.
Additionally, sponges contain amebocytes, which are mobile cells responsible for food uptake and waste disposal, and spicules, which provide support and protection for the sponge. These specialized cells are found in the inner layer of the sponge body.. Another specialized cell type is the amebocytes, located in the mesohyl, which play a role in digestion, nutrient transport, and structural support.
Know more about A sponge here:
https://brainly.com/question/10485054
#SPJ11
Why are technological advances in skin grafting, 3D printing, and prosthetics, needed?
Answers
The greatest advantage that 3D printers provide in medical applications is the freedom to produce custom-made medical products and equipment.
What do you mean by 3D-printing?3D printing or additive manufacturing is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer control.
Three-dimensional (3D) printing is an additive manufacturing process that creates a physical object from a digital design. The process works by laying down thin layers of material in the form of liquid or powdered plastic, metal or cement.
Designers use 3D printers to quickly create product models and prototypes, but they're increasingly being used to make final products, as well.
Learn more about 3D printing:
https://brainly.com/question/30348821
#SPJ1
3. Oxygen has only six electrons in its outer level. How many covalent bonds caneach atom of oxygen form with hydrogen atoms?A. 0B. 1C. 2
Answers
In chemistry, there is a rule called "the octet rule", which says that the outermost energy level of atoms is completed when it reaches 8 electrons.
In this case, oxygen is no exception, this atom has 6 electrons in its last energy level and requires 2 more to complete its octet. In the following image, we see the lewis structure for oxygen where each dot represents an electron. Each individual electron represents a space where another electron can join to form a bond and complete the octet.
Finally, to answer the question, hydrogen atoms have only one electron, so we need 2 hydrogen atoms (one for each individual electron of oxygen) to complete the octet as we see in the next image. Therefore, the answer is C (2)
Red flowers (R) are dominant to white flowers (r). Parent 1 has white flowers. Parent 2 is heterozygous.
Answers
Answer: Rr X rr
Rr Rr rr rr
Explanation:
Of the facts listed below, which surprised you the most. Why?
1. Dishwashers use ½ the energy and ⅓rd of the water as hand washing.
2. 2/3rds of the food tossed out at home could have been eaten if it had been stored properly.
3. In the last 15 years, clothing production has approximately doubled.
Answers
Answer:
"2/3rds of the food tossed out at home could have been eaten if it had been stored properly."
Explanation:
This fact is surprising because it highlights how much food waste could be avoided if people were more mindful about how they store their food. It is estimated that one-third of all food produced is wasted, which has significant environmental and economic consequences. By reducing food waste, we can reduce greenhouse gas emissions, conserve resources, and save money.
Moreover, this fact also underlines the importance of education and awareness-raising initiatives to promote proper food storage and reduce food waste. Simple actions such as using airtight containers, refrigerating leftovers promptly, and checking expiration dates can go a long way in preventing food waste.
Hope this helps!
E1 Biol 2281 usage of internet to analyze nuclei acid
Are these right?
Answers
We can see here that going through the answers provided in the image, we can deduce that they are correct though it will be proper to cross-check before submitting.
What is nuclei acid?Nucleic acids are biomolecules that play a crucial role in storing, transmitting, and expressing genetic information in living organisms. They are essential for the functioning and inheritance of genetic traits.
Both DNA and RNA are polymers made up of repeating units called nucleotides. Each nucleotide consists of three components: a sugar molecule (deoxyribose in DNA and ribose in RNA), a phosphate group, and a nitrogenous base.
Learn more about nuclei acid on https://brainly.com/question/13794110
#SPJ1
If you would like the drug to enter cells via passive diffusion, which of the following properties should it have?
Answers
Drugs that must enter cells via passive diffusion should have the absorption property.
What is absorption property?Absorption is the process through which something is totally mixed or absorbed by another substance.
On the other hand, adsorption is the process by which atoms, ions, or molecules from a substance (which could be a gas, liquid, or dissolved solid) adhere to the adsorbent's surface.
It should be noted that Adsorption and absorption mean quite different things.
Learn more about absorption here:
https://brainly.com/question/26061959
#SPJ1
Mitosis is an example of sexual reproduction.
True
Or
False?
Answers
Answer:
false
Explanation:
its a type of like cell thing
Answer:
false
Explanation:
In cell biology, mitosis is a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. Cell division by mitosis gives rise to genetically identical cells in which the total number of chromosomes is maintained Therefore, mitosis is also known as equational division.
The opossum is a new arrival in southern Ontario. Its niche is similar to that of the raccoon. An opossum has a long, bare, rat-like tail. A raccoon has a long, bushy tail. How is this a selective advantage for the raccoon?
Answers
The long, bushy tail of the raccoon may be a selective advantage for this species because the bushy tail helps keep the face warm during a snowstorm (Option d). In addition, it may serve as camouflage and also may act to communicate with other members of the population.
What is an evolutionary selective advantage?An evolutionary selective advantage is a feature in a species that confer an advantage to survive and reproduce in a particular environmental condition, which may be associated such as in this case to the tail in raccoons.
Therefore, with this data, we can see that an evolutionary selective advantage is any phenotypic feature that enhances the survival and or reproductive rate of individuals in a population or species.
Complete question:
The opossum is a new arrival in southern Ontario. Its niche is similar to that of the raccoon. An opossum has a long, bare, rat-like tail. A raccoon has a long, bushy tail. How is this a selective advantage for the raccoon?
selective advantage only applies to populations
the opossum tail can grab onto a tree for balance
tail fur does not have an impact on survival
the bushy tail helps keep the face warm during a snowstorm
Learn more about evolutionary selective advantages here:
https://brainly.com/question/18881465
#SPJ1
What does a tumor and uncontrolled growth cause in the cell cycle?
Answers
Select the correct answer.
When do sunspots disappear?
A. Sunspots are always present and NEVER disappear.
B. Once the magnetic field weakens in the area and cold plasma enters the area of the sunspot
c.
Once the magnetic field weakens in the area and hotter plasma enters the area of the sunspot
D.
Once the magnetic field strengthens in the area and hotter plasma enters the area of the sunspot
Answers
Answer:
B
Explanation:
unusually weak magnetic fields on the sun paired with reduced solar activity cause sunspots to disappear.
Once the magnetic field weakens in the area and cold plasma enters the area of the sunspot. Therefore option B is correct.
Sunspots are temporary phenomena on the Sun's surface caused by intense magnetic activity.
As the magnetic field in the sunspot weakens, it creates a relatively cooler region compared to its surroundings due to reduced heat convection. This cooler area is known as a sunspot.
Sunspots can last for days, weeks, or even months, but eventually, they disappear as the magnetic field changes. The process is cyclical, with sunspots going through periods of formation, growth, and decay.
Once the magnetic activity weakens, cold plasma fills the area, causing the sunspot to fade away. New sunspots can then form in different regions of the Sun's surface as the solar cycle continues.
Therefore option B is correct.
Know more about sunspots:
https://brainly.com/question/13969679
#SPJ6
Which statement BEST describes an advantage that sexual reproduction has compared to asexual reproduction?
A There is a lower mutation rate in organisms that reproduce sexually.
B Less energy expenditure is required for sexual reproduction.
C There is more genetic variation of offspring as a result of sexual reproduction.
D Sexual reproduction takes place quickly and efficiently.
Answers
Name three types of cells found in the human body. Where are they found and what are their functions?
Answers
Answer:
red blood cells (erythrocytes)
skin cells.
neurons (nerve cells)
fat cells.
Explanation:
red blood cells (erythrocytes)
skin cells.
neurons (nerve cells)
fat cells.
According to the model of the human respiratory system, how do structures in the
respiratory system interact to protect the lungs? How might a sinus infection affect the
rest of the respiratory system?
Answers
Answer: The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
Explanation:
There are Cilia that protect the airways of the lungs from invaders and pathogens by trapping them. Sinus is present in the nose which blocks the airways while it swells.
What is the respiratory system?The respiratory system is the system that is responsible for getting oxygen into the body and removing carbon dioxide from the body.
Together, the respiratory and circulatory systems move blood and oxygen throughout the body. The trachea, bronchi, and bronchioles are the pathways by which air enters and exits the lungs. The pulmonary arteries and veins, which attach to the heart, carry blood into and out of the lungs.
Thus, there are cilia that, by trapping invaders and diseases, defend the lungs' airways. The nose has a sinus, which obstructs the airways when it grows.
To learn more about the respiratory system, refer to the link:
https://brainly.com/question/4190530
#SPJ2
There are three sources of genetic variation in sexual reproduction. Determine which of the following statements accurately describes which of these are considered random and which are not
Answers
Genetic recombination and independent assortment are considered random sources of genetic variation, while mutations can occur randomly or due to specific factors.
In sexual reproduction, the three sources of genetic variation are genetic recombination, independent assortment, and random mutations. Among these sources, genetic recombination and independent assortment are considered random processes, while mutations are not entirely random.Genetic recombination occurs during meiosis when homologous chromosomes exchange genetic material through crossing over. This process is considered random as the precise locations where recombination events occur are unpredictable.Independent assortment refers to the random alignment and separation of homologous chromosomes during meiosis I. The random positioning of maternal and paternal chromosomes contributes to genetic diversity in offspring.On the other hand, mutations are not entirely random as they can be influenced by various factors such as exposure to mutagens or errors in DNA replication. However, the specific mutations that occur at particular loci are generally considered random events.Therefore, the accurate statement would be that genetic recombination and independent assortment are considered random sources of genetic variation, while mutations are influenced by both random and non-random factors.For more such questions on Genetic variation:
https://brainly.com/question/23840938
#SPJ8
The pea aphid, a type of insect, contains light-capturing pigments in its exoskeleton. Scientists hypothesize the pea aphids gained the ability to synthesize these pigments from genes transferred from fungi during evolution. While pea phones do not have chloroplasts or fix carbon, researchers have found that pea aphids with more pigments have higher levels of ATP than those fewer pigments. Pea aphids also have been shown to increase production of ATP when exposed to sunlight.
Based on this information, is the pea aphid a true autotroph?
Answers
The pea aphid isn't a true autotroph because it is unable to use the energy from sunlight.
What is a true autotroph?A true autotroph is an organism that produces biomass by a chemical process called photosynthesis.
This type of autotroph generates biomass by means of photosynthetic cycles of production.
In conclusion, the pea aphid isn't a true autotroph because it is unable to use the energy from sunlight.
Learn more about true autotrophs here:
https://brainly.com/question/13185466
#SPJ1
pls help
In chemistry, elements ___
choices are :
have distinct chemical characteristics
are rarely found in ionic form
are the primary form of energy
readily change from one form to another
Answers
Answer:
d
Explanation:
i do be smart