Mitochondria breaks down sugar molecules that supply energy to the cell
Explanation:
Process of breaking down of the sugar molecule in order to produce energy is known "cellular respiration". All this activity takes place in the mitochondria. It is also referred as the energy source of cell. It utilises the food to produce ATP, that produces energy.
Mitochondria has its own ribosomes and DNA. They can prepare their protein without being dependent upon the cell. Mitochondria multiplies through fission. Glucose is broken down to pyruvate in cell cytoplasm.This pyruvate when enters into mitochondria is converted to water and carbon dioxide.
What is a benchmark meaning in earthquakes
Answer:a time period where its at a low
Explanation:its break time
which of these are limiting factors?
a- habitat loss b- all of the above
c- food availability
d- predators
e- disease and parasites
Answer:
all of the above
Explanation:
habitat loss, food availability, predators and disease are all limiting factors in terms of survival
which of the following statements is true of babies born to HIV-infected mothers?
"Babies born to HIV-infected mothers can be infected but asymptomatic." This is true. Therefore, option (3) is correct.
Some babies born to HIV-positive moms will contract HIV. Medical care can lower the risk of mother-to-child HIV transmission. The illness can worsen in asymptomatic newborns. HIV is transmitted by body fluids, not fertilisation.
Breastfeeding can transmit HIV, however antiretroviral medication for mum and baby and alternate feeding practises can reduce the risk. Proper medical care and prevention help prevent HIV transmission from moms to their children. Therefore, option (3) is correct.
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Your question is incomplete but your full question was:
Which of the following statements is true of babies born to HIV-infected mothers?
Babies can contract HIV during sperm/egg adhesion in the fertilization process.All babies born to HIV-infected mothers are infected with HIV.Babies born to HIV-infected mothers can be infected but asymptomatic.Babies seldom contract HIV through breast feeding by an infected mother.Homo erectus is believed to be the first confirmed species found outside of ___
Answer:Homo erectus is believed to be the first confirmed species found outside of Africa.
Explanation:
Answer:
Homo erectus is believed to be the first confirmed species found outside Africa.
Explanation:
The human race is believed to have evolved in Africa because the evidences of evolution of major human species are found in Africa. The fossil evidences of Homo erectus were found in Georgia, China etc before millions of years. Evidences of all the human species that lived on earth before Homo erectus were found in the continent of Africa.
All the human species that lived before Homo erectus didn’t stand upright and move in two legs. It was only from the period of Homo erectus that humans stood upright and moved in two legs.
A person lives in a new structure that complies with modern building codes with regard to earthquake safety. What is the best place for this person to take cover during an earthquake
Answer:
The correct answer would be to move under a table.
Explanation:
The best manner by which a person can remain safe at the time of an earthquake as suggested by the experts is to drop, cover, and hold on. Thus, the best thing one can do at the time of an earthquake is to drop and cover under a table and hold on.
The deadly things, which can turn fatal at the time of an earthquake would be to stand in a doorway or near a window or covering in a basement.
Enzymes are able to increase the speed of a reaction because they accomplish which of these tasks
Answer: Activation Energy
Explanation:Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Answer:
They decrease the activation energy.
Explanation:
All atoms of the same element contain the same number of
a. neutrons.
b. protons.
c. neutrons and electrons.
d. neutrons and protons.
Answer: The answer is B while neutrons and electrons are usually the same in a given atom protons are always consistent.
Which molecule is incorrectly matched with its monomer?
a. nucleic acids; nucleotide
b. protein; amino acid
c. starch; lipid
Answer:
C. starch and lipid
Explanation:
Answer:
The answer to your question is c, starch; lipid.
Explanation:
a. nucleic acids; nucleotide This answer is not right because nucleic acids are composed by nucleotides then nucleotides are the monomers of nucleic acids.
b. protein; amino acid . This question is not right because proteins are composed by aminoacids that means that aminoacids are monomers of proteins.
c. starch; lipid. This question is right because starch is composed by monosaccharides so monosaccharides are monomers of starch not lipids.
Which of the following would be a limiting factor affecting the panda population of china?
a- capture of some pandas for placement in zoos
b- laws protecting habitat destruction
c- programs that educate people about endangered species
d- a disease that kills bamboo plants
Answer:
D
Explanation:
A limiting factor is an environmental condition or resource whose change has an influence on the size of the population of a species or community. In this case bamboo are a source of food for Pandas. A disease that reduces the number of bamboo trees in ecosystem causes the subsequent reduction of Panda population becasue there wil be less food and increased competition for the resource.
Answer:
A and D
Explanation:
What is the role of a scientist?
_______________________
(Apex) Answer Choices:
A. To keep scientific secrets
B. To report accurate results
C. To tell people how they must live
D. To dictate government policies
Answer:
B.
Explanation:
The purpose of being a scientists is to share your discoveries with others. Discoveries which must be accurate.
To report accurate results is the role of a scientist. Thus, the correct option is B.
What is the role of scientist in society?Scientists play an important role not only in avoiding unprofessional and dangerous decisions, but also in advising policymakers and other stakeholders about the wiser and best moves to make towards a human-centered society, in such that fomenting scientific knowledge and expanding cross cultural connections and joint research.
Scientists create hypotheses, test them through various methods such as statistics and data and evaluate conclusions based on the evidence provided.
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what are thhe main differences between plant and animal cells
Answer:
A difference between plant cells and animal cells is that most animal cells are round whereas most plant cells are rectangular. Plant cells have a rigid cell wall that surrounds the cell membrane.
Explanation:
the cell membrane is a lipid bilayer, but a cell has only one cell membrane. which organelles in this lesson have a double membrane?
Answer:
The cell membrane is composed of two layers of phospholipids and is a fluid structure that's composed of four main molecules.DNA is transcribed into RNA within the nucleus and then RNA is transported to the cytoplasm.The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. These membranes are flat sheets that form a continuous barrier around all cells.
Explanation:
The mitochondria and chloroplasts in plant cells, as well as the nucleus, are the organelles in a cell that possess a double membrane.
Explanation:The cell organelles that have a double membrane are the mitochondria and the chloroplasts in plant cells. These organelles are unique in that they have their own DNA separate from the rest of the cell, and this is protected within their double membrane structure. The nucleus, which houses the cell's main DNA, also has a double membrane. Hence, several organelles do indeed have a double membrane despite the cell itself having a single cell membrane, which is also known as a lipid bilayer.
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Prompt
What are scientific models used for? Give an example of each of the following types of models: Idea, Physical, Computer.
Answer:
Scientific models are used to predict and elaborate the behaviour of the real objects in the field of physics, chemistry, ecology and earth science.
It is used to gain improved understanding of the processes and systems.
Explanation:
However, every model have some limitations because they are not the representative of every possible scenario. For instance, relationship between time and distance is the idea model, study of cell and its various parts uses physical model, predicting earthquake uses computer model.
After you decide what information to collect in a descriptive investigation, you need to _____.
Answer:
Make Observations is your answer
Explanation:
Mark brainiest please
Answer:
Make Observations
Explanation:
i hope you have a great day and have a wonderful weekend
Which type of alternative energy can produce ethanol? A. hydropower energy B. solar energy C. biomass energy D. wind energy
Answer:
C. biomass energy
Explanation:
Alcohol may be formed in the process of biochemical changes in the decay of live matter.
C. Biomass energy is the kind of alternative energy than can produce ethanol.
Explanation:The biomass energy is a renewable source of fuel that is produced from corn and other plants. Ethanol has very widespread uses. It is used as fuels for vehicles, in alcohol and beverages, etc.
Apart from corn, Ethanol is also produced from sugar corn, sugar beets, trees, grasses, agricultural residues, etc. The most common way to produce ethanol from biomass is by using the yeast to ferment sugar and starch found in corns, sugar beets, and sugar canes.
The “cause” for something to happen is the:
A. Effect
B. Feedback
C. Response
D. Stimulus
Answer:
d stimulus
Explanation:
The stimulus is what triggers an event, or its "cause". Therefore, option (D) is correct.
A stimulus is an internal or external force that causes an organism or system to respond or react. A physical event, an environmental change, or a particular input may start a series of events that result in an outcome or reaction.
In order to trigger a biological, physiological, or behavioural response in living things or a reaction in non-living systems, the stimulus serves as a catalyst. It acts as the catalyst for a chain of events that, depending on the situation, have the potential to produce an impact, feedback, or reaction.
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a summary of the book tessa afshar
Answer:
Tessa was born in Iran and lived there for the first fourteen years of her life. She moved to England where she survived boarding school for girls and fell in love with Jane Austen and Charlotte Bronte, before moving to the United States permanently. Her conversion to Christianity in her twenties changed the course of her life forever.
Tessa holds an MDiv from Yale University where she served as cochair of the Evangelical Fellowship at the Divinity School. She serves on the staff of one of the oldest churches in America. But that has not cured her from being addicted to chocolate.
An atom of argon has three electron shells, all of
which are full. Its atomic mass is 40. How many
neutrons does it have?
a. 8
c. 20
e. 24
b. 16
d.22
Argon, with an atomic number of 18 and an atomic mass of 40, contains 22 neutrons. This is calculated by subtracting the number of protons (18) from the atomic mass (40).
Explanation:The atom in question here is Argon. To understand the number of neutrons it contains, we need some basic knowledge of atomic structure and atomic mass. An atom consists of protons, electrons, and neutrons. Argon has an atomic number of 18, which tells us it has 18 protons. Electrons do not contribute significantly to the atomic mass, hence, the atomic mass is basically the sum of protons and neutrons.
Knowing that Argon has an atomic mass of 40 and that it has 18 protons, we can calculate the number of neutrons. Subtract the number of protons from the atomic mass (40-18), yielding the number of neutrons. So, Argon has 22 neutrons.
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How do enzymes affect activation energy?
Answer:
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.
Explanation:
Enzymes affect activation energy by significantly lowering it. This reduction in activation energy increases the rate at which chemical reactions occur within cells. As a result, reactions that might occur too slowly or not at all because of high activation energies proceed rapidly in the presence of enzymes, facilitating the complex network of metabolic pathways necessary for life.
Activation energy is the minimum amount of energy required for reactants to transform into products in a chemical reaction. In biochemical processes, this energy barrier can prevent vital reactions from happening at efficient rates. Enzymes serve as biological catalysts that lower this barrier, making it easier for the reaction to occur without the need for excessive heat which is unattainable in living cells. These catalysts work by binding to reactant molecules, stabilizing the transition state, and thereby decreasing the necessary energy for the reaction. For instance, in cellular respiration, glucose is a key reactant transformed into energy. The production of glucose is through photosynthesis, which is an endothermic reaction because it requires energy input from sunlight. Proper nutrition and regular exercise are crucial for maintaining a healthy body as they ensure the availability of necessary substrates and optimized enzyme function for metabolic reactions.
The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again
What’s the independent and dependent variable?
Answer:
Independent: stressful enviromentt
Dependent: blood pressure
Answer:
A variable, which is monitored or changed while performing an experiment in order to examine the influences on the dependent variable is considered as the independent variable. On the other hand, the variable, which is being determined and examined while performing an experiment is known as a dependent variable.
The dependent variable bank upon the independent variable. As the researcher modifies the independent variable, the influence on the dependent variable is witnessed and noted. In the given case, a soldier is exposed to a stressful environment, which makes a change in his blood pressure.
It is noted that with the change in the environmental condition, a change is noticed in the blood pressure of the soldier. Thus, in the given case, the stressful environment is an independent variable, and the change in blood pressure is a dependent variable.
Which temperature is colder, -187°C or -168°C?
In the comparison of temperatures, -187°C is colder than -168°C, as numerically lower temperatures on the Celsius scale represent colder conditions.
The question at hand is which temperature is colder, -187°C or -168°C. In terms of temperature measurement, a lower number indicates a colder temperature. Thus, directly comparing the numbers, -187°C is colder than -168°C because the value -187 is smaller (or lower) than -168 on the Celsius scale. Furthermore, the subject of temperature ties into the concept of the Kelvin scale, which is an absolute thermodynamic temperature scale with its zero point at absolute zero, the theoretical coldest possible temperature.
whiat is not classified as an organism.
A tree
B lizard
C apple
D bacteria
A. AppleAnswer:
Explanation:
Answer:
the answer is apple
Explanation:
i just took the test and got a 100 precent on it trust me
a chemistry student’s height is measured at 68.5 inches. How tall is the student in cm
Answer:
173.99 CM
Explanation:
68.5 * 2.54 = 173.99
If a chemistry student’s height is measured at 68.5 inches, then he would have been 174 centimeters tall.
What is a unit of measurement?A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
As given in the problem a chemistry student’s height is measured at 68.5 inches and we have to find out his height in centimeters.
As we know, from the standard measurements,
1 inch = 2.54 centimeters
68.5 inches = 68.5 ×2.54 centimeters
= 174 centimeters
Thus, he would have been 174 centimeters tall.
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What is found in group 1 and 4 on the Periodic table
Answer:
Group 1 - Alkali metals; Group 4 - Elemental Properties
Explanation:
The elements in Group 1 are called Alkali metals and those are: Lithium, Potassium, Rubidium, Celsium, Francium and Sodium and the elements in Group 4 are called: Titanium, Hafnium, Zirconium and Rutherfoundium.
It's important that group 4 has no trivial name like the group 1 does, it belongs to the grouping of transition metals and those metals have several general properties. They are found in the middle of the periodic table.
Scientific method lab results
Answer:
1.Observation and description of a phenomenon. The observations are made visually or with the aid of scientific equipment.
2.Formulation of a hypothesis to explain the phenomenon in the form of a causal mechanism or a mathematical relation.
3.Test the hypothesis by analyzing the results of observations or by predicting and observing the existence of new phenomena that follow from the hypothesis. If experiments do not confirm the hypothesis, the hypothesis must be rejected or modified (Go back to Step 2).
4.Establish a theory based on repeated verification of the results.
Explanation:
The scientific method is a structured approach used in scientific research. It begins with an observation, then a hypothesis is formed, and experiments are conducted to test this hypothesis. Lab results reveal whether the hypothesis was correct, needs revision, or is incorrect.
Explanation:The scientific method is a systemic approach used in science to find answers to questions or solve problems. It consists of a sequence of steps, each of which plays an integral part in the research process.
The first step is to make observations about the world around us. With observations, we form a hypothesis, which is a tentative explanation for the observed phenomenon. This hypothesis becomes the basis for the experiment, where we test to see if it holds true.
The lab results are findings obtained from an experiment. They provide detailed information on whether the hypothesis stands or not. They may either support the hypothesis, totally debunk it, or partially prove it. Analyzing and interpreting these results is key in scientific research. For instance, if your hypothesis is 'All plants turn towards the sunlight,' you would study several plant species over a period of time to either support or refute this hypothesis based on the results. If some plant species consistently do not turn towards the sun, your lab results would falsify the hypothesis, leading to its revision.
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LO 5-3 How does the nervous
system communicate electrica
and chemical messages from
one part to another?
Final answer:
The nervous system communicates through an electrochemical process, where electrical signals within neurons are combined with chemical signals via neurotransmitters across synapses, enabling efficient transmission of messages throughout the body.
Explanation:
How the Nervous System Communicates
The nervous system uses an intricate electrochemical process to communicate messages across different parts of the body. This complex process involves both electrical signals within neurons and chemical messengers known as neurotransmitters to transmit information between neurons. Let's break this process down into understandable parts:
Electrical Signaling: Within a neuron, an electrical signal travels from the dendrites, through the cell body (soma), and along the axon to the nerve terminal.Chemical Signaling: Once the electrical signal reaches the axon's end, it triggers the release of neurotransmitters into the synapse, the gap between neurons. These chemical messengers then bind to receptor sites on the adjacent neuron, effectively transmitting the signal across the gap.This combination of electrical and chemical signaling allows for fast and efficient communication throughout the nervous system, enabling response to stimuli and coordination of activities.Through this powerful electrochemical mechanism, our nervous system controls everything from simple reflexes to complex thoughts and emotions.
A taxi starts from Monument Circle and travels 5 kilometers to the east for 5 minutes. Then it travels 10 kilometers to the south for 10 minutes.
For each leg of the trip, the taxi's
stays the same, but its
The taxi is moving with reference to
changes
Reset
Next
Answer:
taxis take gas and a driver..
Answer:
A taxi starts from Monument Circle and travels 5 kilometers to the east for 5 minutes. Then it travels 10 kilometers to the south for 10 minutes.
The taxi is moving with reference to MONUMENT CIRCLE. For each leg of the trip, the taxi’s AVERAGE SPEED stays the same, but its AVERAGE VELOCITY changes.
Explanation:
A good question to use for a scientific investigation should be testable, and it should be connected to science concepts. Casey wants to do a scientific investigation about light. Which of the following questions would be best to use to guide his scientific investigation?
A) What color of light is the prettiest?
B) Which type of light bulb is easiest to catch?
C) Which type of light bulb burns the longest?
D) Which type of light bulb is preferred by moms?
Answer: C
Explanation:
Study island
Answer:C) Which type of light bulb burns the longest?
Explanation:The prettiness of light bulb cannot be directly measured. The question "Which type of light bulb is preferred by moms?" and the question about catching light bulbs are not related to scientific concepts about light or light bulbs. The best scientific question is, "Which type of light bulb burns the longest?"
Which is a term for a decomposer?
O
A. Detritivore
O
B. Carnivore
O
C. Herbivore
O
D.Omnivore
The term for a decomposer in the context of biological relationships is a Detritivore. These organisms break down organic material into simpler substances, which provides nutrients for plants.
Explanation:In the context of biological relationships, a decomposer is best referred to as a Detritivore. Detritivores are organisms like bacteria, fungi, earthworms, and certain types of insects that aid in the process of decomposition.
They digest organic material, breaking it down into simpler forms of matter. This ultimately enriches soil and provides nutrients for primary producers (plants). This is different from a Carnivore, which primarily eats meat; a Herbivore, which primarily eats plants; and an Omnivore, which eats both plants and meat.
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Which elements can form basic compounds? Check all that apply. sulfur rubidium arsenic selenium silicon xenon antimony
Final answer:
Among the elements listed, rubidium can form basic compounds like rubidium hydroxide, while silicon can react with strong bases to form silicates. The other elements mentioned are not typically known for forming basic compounds.
Explanation:
Elements that Can Form Basic Compounds
Among the elements listed, rubidium (Rb) is a metallic element that can form basic compounds known as oxides and hydroxides. For instance, rubidium hydroxide (RbOH) is a strong base. The element silicon (Si), while being a metalloid, can react with strong bases to form silicates, which are basic compounds. However, sulfur (S), arsenic (As), selenium (Se), antimony (Sb), and xenon (Xe) are typically not known for forming basic compounds. Arsenic, for instance, generally forms compounds with oxidation states of 3+ or 5+ and not typically basic in nature.
It is important to differentiate between basic compounds and acidic or amphoteric compounds as it affects the chemical reactions and properties of these elements. For chemistry students, understanding the properties and tendencies of elements to form certain types of compounds is essential in predicting chemical reactions and studying material characteristics.
The answers are:
B) Rubidium
C) Arsenic
E) Silicon
G) Antimony