Answer:
Nuclear reactions involve a change in an atom's nucleus, usually producing a different element
Explanation:
Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei. Different isotopes of an element normally behave similarly in chemical reactions.
The electrical impulse of the heart normally begins at the:.
Answer:
SA node (sinoatrial node)
Explanation:
SA node (sinoatrial node) – known as the heart's natural pacemaker. The impulse starts in a small bundle of specialized cells located in the right atrium, called the SA node. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles.
If two organisms have homologous structures and similar early development, what can you infer about them?
Answer:
Common ancestry
Explanation:
If two things have similar structures and have similar early development that means they likely originated from a common ancestory a long time ago. This would support the notion that they are evolutionary related.
Identify a pattern that you observe in the bodies of the three animals shown here. The pattern could involve the shapes and locations of the eyes, mouth, or limbs. Construct an explanation for this pattern. Include either the term homologous structure or the term analogous structure in your response.
The morphology of the extremities is a pattern shared by the bodies of these three animals, which is due to evolutionary homo-logy.
What are homo-logous structures?Homo-logous structures are body structures that may or not may have the same function but share an evolutionary origin.
Conversely, analogous structures have the same functions but they are not found in a common ancestor.
In conclusion, the morphology of the extremities is a pattern shared by the bodies of these three animals, which is due to evolutionary homo-logy.
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Why is using "illegal marijuana" in a vape form so dangerous? A. The marijuana is likely contaminated
B. The THC level is strongly regulated
C. You're not likely to become addicted
D. It is a safe alternative to tobacco
what is the medial indentation on the kidneys called
1. (b) How does transpiration provide water for essential life processes in plants?
Answer:
Concentration gradient forces the water to flow passively from the soil to the root, and to move up through the stem in the xylem and evaporates through stomata in the leaf. In such a way transpiration provides water for essential life processes in plants.
which term refers to the fact that the therapist cannot disclose
How can 2 locations roughly the same distance from the equator (the same amount of sunlight) have such a different climates?
Answer:
Explanation:
Latitude or distance from the equator - Temperatures drop the further an area is from the equator due to the curvature of the earth. The humid subtropical climate is generally located between 25° and 35° latitude on the east sides of continents. Also, temperatures decrease as you move away from the equator.
Where did the word tango come from? it came from a certain kind of music known for its counterpoint rhythm in latin america. it came from african music. it came from india. it came from china.
Answer:it came from a certain kind of music known for its counterpoint rhythm in Latin America.
Explanation:trust bbg
The word tango came from a certain kind of music known for its counterpoint rhythm in Latin America.
Where did the word tango come from?The word tango was obtained from Spanish language. The word tango in Spanish means a drum. It is a term that is intricately connected to music.
Since many Latin American countries speak Spanish language, the word tango came from a certain kind of music known for its counterpoint rhythm in Latin America.
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The roof of an eco-house is covered with soil. Covering the roof with soil decreases the thermal conductivity of the roof. What are the two of the choices listed below are advantages of having a roof with a lower thermal conductivity?
1) Less energy is needed to heat the house.
2) The rate of energy transfer by conduction is greater.
3) The roof is a better insulator.
4) The roof is less likely to leak.
5) Weather will have a greater effect on the temperature of the house.
Answer:
To understand how insulation works it helps to understand heat flow, which involves three basic mechanisms -- conduction, convection, and radiation. Conduction is the way heat moves through materials, such as when a spoon placed in a hot cup of coffee conducts heat through its handle to your hand. Convection is the way heat circulates through liquids and gases, and is why lighter, warmer air rises, and cooler, denser air sinks in your home. Radiant heat travels in a straight line and heats anything solid in its path that absorbs its energy.
Most common insulation materials work by slowing conductive heat flow and convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. To be effective, the reflective surface must be in contact with an air space.
Answer:
Explanation:
A thick layer of material with a low thermal conductivity reduces the rate of heat transfer from the ceiling into the roof space.
Crude oil is turned into usable forms of energy in a ______.
A) Downstream
B) Meltdown
C) Turbine
D) Ethanol
E) Passive solar cooling
F) Utility
G) First Law of Energy
H) Refinery
I) Isotopes
J) Second Law of Energy
Answer: C) Turbine
Explanation: Crude oil is turned into usable forms of energey by a Combustion Turbine. Hope this helped!
The Earth's atmosphere is unique among all of the planets in the solar system. Describe 3 characteristics of the Earth's atmosphere that allows for life on Earth as we know it.
Answer:
oxygen, carbon dioxide and magnetic field
Identify the interaction used to describe each type of interdependence among organisms. having too many fish in a pond can limit the amount of food and space available. the cheetah population depends on the gazelle population for food.
The dependence of the cheetah population on the gazelle population for food shows a kind of interdependent interaction.
What are interdependent interactions?They are a form of interaction between two organisms in which the survival of one is dependent on the other.
If the organism whose existence is important to the existence of the other should go extinct, it will greatly affect the survival of the latter.
Aside from going extinct, the rise and fall of one of the organisms affect the other either positively or negatively as well.
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Answers:
competition
predation
increase
Explanation:
Identify the interaction used to describe each type of interdependence among organisms.
✔ competition
Having too many fish in a pond can limit the amount of food and space available.
✔ predation
The cheetah population depends on the gazelle population for food.
Given the relationships identified above, determine what would happen to the populations under the following circumstances.
✔ increase
If the cheetah population decreases, what would happen to the gazelle population?
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Fragments of _________ released from Gram-negative bacteria into the bloodstream produce fever and shock. Lipopolysacharide N-acetylmuramic acid Phospholipid N-acetylglucosamine
Fragments of Lipopolysaccharide( LPS ) released from the Gram-negative bacteria into the bloodstream produces fever and shock
What is a gram negative bacteria ?Gram negative bacteria is classified based on its color after it must undergone a chemical reaction known as gram staining. Gram negative bacteria have a thin peptidoglycan layer.
The fragment of Lipopolysaccharide when released into the bloodstream will send the body into shock and fever as it is released from the Gram-negative bacteria.
Hence we can conclude that Fragments of Lipopolysaccharide( LPS ) released from the Gram-negative bacteria into the bloodstream produces fever and shock.
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Is xylem or schlencyma the tissue that forms annual rings during secondary thickening growth in dicot plant
Answer:
xylem
Explanation:
What are the three main functions of bones?
1.) bones help support and move muscles, protect vital organs, and store essential minerals such as calcium.
2.) bones connect and support internal organs, protect vital organs, and store essential minerals such as calcium.
3.) bones help support and move muscles, protect blood vessels and veins, and store essential minerals such as insulin.
4.) bones connect and support internal organs, protect blood vessels and veins, and store essential minerals such as insulin.
is it 1, 2, 3, or 4?
Answer:
2.) bones connect and support internal organs, protect vital organs, and store essential minerals such as calcium.
Explanation :
Bone makes up the body’s skeleton. There are 206 bones in the human body.
FUNCTIONS OF BONES:
Bone provides shape and support to the body.
It protects the internal organs present in the body
internal organs present in the body
It acts as a storage site for fats and minerals like calcium etc.,
Bones help in the development of the blood cells.
It helps in facilitating movements.
When a chemical reaction does not occur, what happens to the atoms of the reactants
Answer:
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
bacteria unicellular or multicellular
Answer:
Bacteria is unicellular
Explanation:
Because it is a single celled organism
Answer:
Unicellular organisms
Which of the following lists organisms from oldest to youngest organisms on Earth?
a. bacteria, mammals, reptiles, fish
b. fish, bacteria, mammals, reptiles
c. bacteria, fish, reptiles, mammals
d. reptiles, mammals, fish, bacteria
Answer:
c
c is the correct anwser because if you date back to the young earth ot was nothing but water and bacteria was the first thing on earth and then came fish and then the land for reptiles
For any activity such as running, jumping, or hunting, animals have to use energy obtained from food. What organelle performs a similar function within a cell to fuel cellular activities?.
Answer:
the answer is MITOCHRONDRIA
please brainlist
Mitochondria are membrane bound organelles that is found in the cytoplasm of cells of Eukaryotic organisms. They are responsible for generating energy in the cells , hence they are called the power house. They produce chemical energy in the cells in form of adenosine triphosphate (ATP) needed for cells activities and processes.
what is inside your capillaries that carries oxygen to your heart?
Answer:
Capillaries are narrow blood vessels. Blood contains plasma, red blood cells, white blood cells and platelets. Red Blood cells are bi-concave disc which contains hemoglobin that reacts with oxygen and thus oxygen is transported by RBC to the heart where it is distributed to the whole body
Veins are present inside your capillaries that carry oxygen to your heart. While arteries perform the opposite function which carries blood away from the heart.
What are the functions of capillaries?The functions of capillaries are as follows:
Capillaries transport blood, oxygen, and nutrients to every cell. They are the type of delicate blood vessels that exist throughout your body. They also exchange waste throughout the body.Capillaries also help in the connection of arteries and veins.Capillaries are the connection link of both arteries and veins. So, both arteries and veins perform their specific function in order to facilitate the transport of deoxygenated blood and oxygenated blood to and from the heart respectively.
Therefore, the structure inside your capillaries that carries oxygen to your heart is known as veins.
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I can be good or bad. When I am good, I help you digest food and compete against pathogens for colonization sites.
archaebacteria
eubacteria
protist
fungi
plant
animal
Designer drugs are classified as drugs that. A.Have medical use
B. Are synthetically created
CAren't Addictive
D. All of the above
HELP PLEASE ANSWER ASAP
How does a layperson’s understanding of the word “theory” differ from that of a scientist?
1. A layperson might use the term theory to mean a guess, but to a scientist a theory is something that produces testable predictions.
2. A layperson might use the term theory to mean a guess, but to a scientist a theory is something that can be proven scientifically.
3. A layperson might use the term theory to mean a guess, but to a scientist a theory is something that is already established.
4. A layperson might use the term theory to mean a guess, but to a scientist a theory is something that is scientific law.
Answer: The answer is 1.
Hope this helps!
3. What is the difference between saponifiable and nonsaponifiable lipids?
Answer:
the difference is that unsaponifiable lipids do not contain fatty acids at least not as a component of the fundamental structure whereas saponifiable lipids do have fatty acids.
Explanation:
As a further explanation unsaponifiable lipids are lipids that do not contain fatty acids as components of the fundamental structure. On the other hand, complex also known as saponifiable lipids do contain fatty acids, and those fatty acids can be released in a process called saponification which is caused by alkaline hydrolysis.
What are three ways in which genes are expressed through adaptations?
Answer:
this my answer and if u are in class 10 then you aslo ask me questions of it ok by Explanation: The journey from gene to protein is complex and tightly controlled within each cell. It consists of two major steps: transcription and translation. Together, transcription and translation are known as gene expression.A student is creating a T chart of prokaryotic vs eukaryotic cells
T chart of prokaryotic cell vs eukaryotic cell.
Prokaryotic cell size is generally small ( 0.5-10um ).Nuclear region is not surrounded by nuclear membrane. Membrane bound organelles such as mitochondria, Lysosomes, endoplasmic reticulum are absent nucleus is absent. cell division is by fission or budding ( but no mitosis ).they always have single chromosome. DNA is circular and lies free in the cytoplasm. DNA is nàked( not associated with proteins or RNA to form chromosome) eg - found in PPLO bacteria and blue green algae. Eukaryotic cell they are larget in size (1-100um)Nuclear region is surrounded by a nuclear membrane. all the membrane bound organelles are present. nucleus present. cell diviis mitotic or meiotic.they have more than one chromosome. DNA is linear and contained in a nucleus. DNA is associated with proteins and RNA to form chromosomes. e.g found in plants and animals other than PPLO and blue green algae.20 POINTS!!
Which part of the eye contracts in bright light and expands in dim light?
retina
cornea
lens
iris
Answer:iris
hope this helps
Answer:Iris
Explanation:
Just took the test
Describe the relationship between the mass and metabolic rate of whales and seals in the Antarctic habitat. Explain why less massive species tend to require more energy to survive.
Organisms that have a higher metabolic rate due to large mass and hence require less energy
What is the relationship between metabolic rate and mass?We know that metabolic rate at which individual species carry out the process of metabolism.
It should be know that larger organisms that have a higher metabolic rate due to large mass and hence require less energy since metabolism produces heat. This owed to the fact that large size implies greater metabolism. Therefore, less massive species tend to require more energy to survive.
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1. How do you think your organs work together to digest food?
2. What other inventions do you think are based on the functions of the digestive system?
3. How might you be able to tell that enzymes are working in your body?
4. How do different types of food change the number of digestive enzymes present in your body?
Answer:
1. Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.
2.The SmartPill is an ingested, wireless device for measuring the health of the digestive system. As it passes through the digestive tract, the capsule transmits data to a receiver, which is later returned to the doctor and the information downloaded onto a laptop computer.
3. When its not working many of the uncomfortable reactions such as an upset stomach, allergy-like symptoms or irritability are actually signs that the enzymes are working. The body is cleaning itself out and the healing process is starting.
4.One of the main reasons for reduced output of digestive enzymes is poor exocrine pancreatic function. The causes of Exocrine Pancreatic Insufficiency (EPI) are very diverse ranging from: Problems with the endocrine part of the pancreas such as insulin dysregulation from diet high in refined carbohydrates and diabetes.
Explanation: