Answer:
what are the answers?
Explanation:
Answer:
Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.
Explanation:Thermal energy (also called heat energy) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy.
Lactic acid fermentation occurs in ____.
A.
bread dough
B.
an environment containing oxygen
C.
muscle cells
D.
mitochondria
Answer:
B an environment containing oxygen
Explanation:
Answer:
C. muscle cells
Explanation:
V. Fill out table below
A positive ion
A negative ion
A positive ion
A negative ion
1. If an atom loses an electron, it becomes... (highlight one)
2. If an atom gains an electron, it becomes... (highlight one)
3. A hydrogen atom loses an electron. It becomes... (highlight one)
4. A sodium ion (Na) can ionically bond with which? (highlight one)
How do you know this?
H
H Н
K
ci
True
False
5. If an atom gains or loses a neutron, the charge of that atom changes. (highlight one)
6. If an atom gains or loses an electron, the atomic mass of that atom changes. (highlight one)
True
False
7. If an atom gains or loses a neutron, the atomic mass of that atom changes. (highlight one)
True
False
8. An atom with
valence electrons can covalently bond with another atom. (highlight one)
True
False
How do you know this?
Answer:
detail is given below
Explanation:
We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. Proton has positive charge P⁺ and neutron is neutral n⁰ .
The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons. The number of protons and electrons are always equal to make the atom electrically neutral and when an atom loses its valance electron the number of protons increases and thus positive charge increased and atom form cation.
Cation formation:
X → X⁺ + e⁻
When an atom gain electron negative charge increase because of more number of electron thus atom form negative ion or anion.
Anion formation:
X + e⁻ → X⁻
1) If an atom loses an electron, it becomes... (positive ion)
2) If an atom gains an electron, it becomes... (negative ion)
3) A hydrogen atom loses an electron. It becomes...(positive ion)
4) A sodium ion (Na) can ionically bond with which?
Sodium ion (Na⁺) can ionically bonded with Cl⁻ , thus both form salt which sodium chloride. Sodium ion can not bonded with hydrogen and potassium because both are also form cation.
5) If an atom gains or loses a neutron, the charge of that atom changes.
The given statement is false because neutron is neutral so when it added or removed from an atom there will be no effect on charge.
6. If an atom gains or loses an electron, the atomic mass of that atom changes.
The given statement is also false because atomic mass is sum of number of neutron and protons. So when electron is added or lost by an atom there will be no effect on atomic mass.
7. If an atom gains or loses a neutron, the atomic mass of that atom changes.
The given statement is true. Atomic mass is sum of number of neutron and protons. So when neutron is added or lost by an atom there will be effect on atomic mass. The atomic mass will be increase or decreased.
8. An atom with valence electrons can covalently bond with another atom.
The given statement is true. The valance electrons of an atom are involved in bonding. It could ionic, covalent or any other type.
A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weights 1587 g. From this information, calculate the density of lead.
Answer:
11.3 cm/g
Explanation:
Which of the following BEST describes an
asteroid?
A. small, rocky object usually found between Mars and
Jupiter
B. eruption of heated gas from the sun's surface
C. chunk of the moon's surface that separated due to
seismic forces
D. a comet that originated in the Oort Cloud
Answer:
i would go with A nut i might be wrong
sorry if i am
Explanation:
Answer:
A. small, rocky object usually found between Mars and
Jupiter
Explanation:
because in outer space the asteroid are keeping mars and jupiter from crashing
oxygen is carried from your lungs through your blood to all your cells by a molecule called
A chlorine
B hemoglobin
C reactants
D active metal
Answer:
B.Hemogoblin
Explanation:
these are the cells cariesd by the molecule
Answer:
b: hemoglobin ..........
how are proteins important for the body
Answer:
Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage, skin, and blood.
Explanation:
Which of the following is a way that the hummingbird shown is adapted to its environment and way of life?
A. Hummingbirds are related to all other organisms on Earth.
B. Hummingbirds have the ability to hover while drinking nectar.
C. Hummingbirds have ancestors who were larger than they are.
D. Hummingbirds are more closely related to other birds than to humans.
Answer:
b hummingbirds have the ability to hover while drinking nectar
Explanation:
because this allows for power in both the upward and downward beats of the hummingbirds wings
1. How many degrees of longitude are they apart for the following points:
B and F
E and G
C and I
G and J
F and C
2. How many hours apart are
B and F
E and G
C and I
G and J
F and C
Answer:
1. i love pizza
Explanation:
4 wow quizzy Please read this carefully A fair warning, Look out for a Discord user by the name of with the tag #2911. She is going around sending friend requests to random Discord users, and those who accept her friend requests will have their accounts DDoSed and their groups exposed with the members inside it becoming a victim as well. Spread the word and send this to as many Discord servers as you can. If you see this user, DO NOT accept her friend request and immediately block her. Our team is currently working very hard to remove this user from our database. Please stay safe. -Discord team
Copy and paste this to all the servers you are in
ApH of 6 is how many times more acidic than a pH of 9?
Answer:
by 1.5
Explanation:
2. A planet that forms by gravitational collapse should:
A. be gas all the way down to the core.
B. be solid all the way down to the core.
C. have a liquid core surrounded by gas.
D. have a rocky core surrounded by gas.
Answer:
A
Explanation:
What particles cannot pass through the cell membrane
Large molecules such as proteins and nucleic acids, charged particles (ions), and polar molecules such as glucose are examples of particles that cannot pass through cell membranes.
The lipid bilayer of the cell membrane makes it difficult for charged and polar substances to pass through. However, small, non-polar molecules and compounds that are lipid soluble can readily diffuse across the cell membrane. Aquaporins make it easier for water molecules to do this by facilitating osmosis.
The selective permeability of the cell membrane enables it to control the passage of molecules, preserving cellular harmony and functionality. In contrast, diffusion allows the easy passage of small, non-polar molecules such as oxygen, carbon dioxide, and lipid-soluble compounds through the cell membrane.
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The air pressure at City A is 1,018 mb, and the air pressure at City B is 980 mb. What will most likely occur due to the pressure gradient present between City A and City B?
Answer:
There are three main causes of change in population: births, deaths and imigration flow. The Coronavirus has affected two of these three factors. The death rate has increased substantially since the pandemic hit. In under 6 months, more than 200,000 people have died. This drastic number of deaths in such a short amount of time is bound to decrease the population of the United States by a considerable margin. Immigration flow has also halted since the beginning of the pandemic. Travel bans and the close monitoring of borders has ensured that the number of immigrants entering the United States has decresed greatly.
Most likely the pressure gradient present between City A and City B that is City A is 1,018 mb, and City B is 980 mb, will - The high-pressure system at City A will create winds that blow toward the low-pressure system at City B.
A force exerted on a surface by the air above it as gravity pulls it to Earth is called air pressure or atmospheric pressure. Atmospheric pressure is commonly measured with a barometer.
it determines wind and weather patterns across the globewinds move from high air pressure to low air pressureIt leads directly to wind and influences the speed and direction of that wind.Pressure differences or gradients also affect larger weather systems like storms.Thus, Most likely the pressure gradient present between City A and City B that is City A is 1,018 mb, and City B is 980 mb, will - The high-pressure system at City A will create winds that blow toward the low-pressure system at City B.
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Variation is caused by what two factors....????
Answer:
mutation,recombination of genes
Which is a gamete?
A. Estrogen
B. Embryo
C. Cervix
D. Egg
Explanation:
egg is ideal female gamete
Which of the following correctly lists the Earth’s structural (physical) layers from outer most to inner most? (listed left (outer most) to right(inner most))
A. Asthenosphere, Lithosphere, Mesosphere, Outer core, Inner core
B. Inner core, Outer core, Mesosphere, Asthenosphere, Lithosphere
C.Lithosphere, Asthenosphere, Mesosphere, Outer core, Inner core
D. Lithosphere, Mesosphere, Asthenosphere, Outer core, Inner core
Answer:
its d :)
Explanation:
What is the answer for
34
Answer:
Explanation:
d
PLEASE ANSWER
Which has been observed in the study of embryology?
A:Species whose embryos have similar traits rarely have a common ancestor.
B:Species whose embryos have similar traits always have similar body forms as adults.
C:All traits present in early embryos remain throughout development.
D:Some traits in certain embryos disappear as the embryo develops.
Is it A,B,C, or D
Answer:
D: Some traits in certain embryos disappear as the embryo develops.
Explanation:
Please tell me if I'm wrong
Answer:
D
Explanation:
Edge 2022
Which of the following describes a virus?
A. A virus does not have a cell wall, nucleus, and eats.
B. A virus has a cell, a nucleus, and does not eat.
C. A virus does not eat, use energy, or have cells.
D. A virus does not have a cell, produces carbon dioxide, and uses oxygen.
A virus does not eat, use energy, or have cells. The correct option is C.
What is basically a virus?A virus is an infectious microbe made up of a nucleic acid segment (either DNA or RNA) surrounded by a protein coat.
A virus cannot replicate on its own; instead, it must infect cells and use host cell components to replicate itself.
Viruses are bundles of nucleic acid DNA or RNA encased in a protein shell called a capsid.
Viruses are the most abundant life form on the planet, according to some estimates; they are 10 times more numerous than bacteria.
Viruses could have evolved from mobile genetic elements with the ability to move between cells.
Thus, the correct option is C as a virus does not consume food, generate energy, or have cells..
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Muscle cells need more energy than other cells in the human body. Which
cell organelle would you expect to find in abundance in these cells? *
Nucleus
O Chloroplasts
O Mitochondria
O Lysosomes
For which of the following reasons do small, isolated islands have a greater rate of
species extinction than larger, less isolated islands?
Answer:
Larger islands that are large and close to the mainland are shos lower rate of extinction due to the fact that the species present have more space so there will be more resources available in comparison to smaller islands where limited space and limited resources available.
Extinction is greater on islands isolated due to the unlikelihood of immigration and as it is opposite to the island close to the mainland and competition is more in isolated islands.
Lack of immigration, lower space and resources are the reasons small isolated islands have a greater rate of extinction.
Large islands have large space for the growth of an organism as well as more resources which lowers the competition between organisms while on the other hand, small islands have lower space for growth and low amount of resources which causes to more competition leads to greater rate of extinction so we can conclude that lack of immigration, lower space and resources are the factors that affect the rate of extinction.
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what is frictional force?
What pair of structures do prokaryotes have?
How are fossils that contain vestigial organs consistent with common ancestry?
Answer:
Explanation:
La evidencia de un antepasado común en los seres vivos, que han encontrado durante décadas científicos que trabajan en numerosos campos, demuestra la descendencia común de estos seres, que la vida en la Tierra se desarrolló a partir de un último antepasado universal, que la evolución existe y que puede demostrar los procesos naturales que han dado como resultado la biodiversidad de la vida en la Tierra. Esta evidencia apoya la síntesis evolutiva moderna, la actual teoría científica que explica cómo y por qué cambia la vida a lo largo del tiempo. Los biólogos evolucionistas han documentado evidencias de antepasados comunes realizando predicciones verificables, probando hipótesis y desarrollando teorías que ilustran y describen sus causas.
La comparación de secuencias genéticas de ADN ha revelado que los organismos filogenéticamente próximos tienen un mayor grado de similitud secuencial que los organismos filogenéticamente alejados. Se pueden encontrar más pruebas de la descendencia común en detritus genéticos como los pseudogenes, regiones del ADN ortólogas a un gen en un organismo relacionado, pero que ya no tienen actividad y parecen estar experimentando un proceso continuo de degeneración por acumulación de mutaciones.
Which shows one example of a physical change and one example of a chemical change?
Show Your Work
boiling water and melting wax
rusting iron and baking a cake
dissolving powder and shredding paper
freezing water and burning coal
An example of physical change is the freezing of water, while an example of chemical change is the burning of coal. Thus, the correct option for this question is D.
What is Physical change?Physical change may be defined as a type of change that only involves alterations in the physical properties of the matter. Examples include the boiling of water, freezing of water, etc.
A Chemical change may be characterized as a type of change that only involves alterations in the chemical properties of the matter. Examples include burning coal, rusting iron, mixing acids and bases, etc.
In a physical change, there is no new substance is synthesized, while in a chemical change one or more new substances are formed.
Therefore, freezing water is an example of physical change, while burning coal is an example of chemical change. Thus, the correct option for this question is D.
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draw a well labelled diagram of a leaf structure and explain how the stomata ,the cuticle and the vascular bundle works
Answer:
A well labelled diagram of a leaf structure
Explanation:
Answer:
Vascular bundles are a collection of tube-like tissues that flow through plants, transporting critical substances to various parts of the plant.The cuticle reduces the rate of water loss from the leaf surface.Stomata are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf.Convection refers to the movement of heat through a fluid, such as water. Which best describes one way that convection influences the circulation of ocean water?
Answer:
onshore wind and offshore wind
Answer:
Warm water at the surface flows toward the poles and sinks as it cools.
Explanation:
took it on edge
Where is the main store of phosphorus ?
Answer:
Phosphorus is most commonly found in rock formations and ocean sediments as phosphate salts.
Answer:
The largest reservoir of phosphorus is in sedimentary rock. It is in these rocks where the phosphorus cycle begins. When it rains, phosphates are removed from the rocks (via weathering) and are distributed throughout both soils and water. Plants take up the phosphate ions from the soil.
A cell is most likely to be a plant cell if it contains: O A. chloroplasts and a cell wall. B. RER and SER. O C. mitochondria and amino acids. OD. DNA and RNA.
A
Explanation:
Only plants cells have chloroplast and a cell wall.
Hope this helps! :)
Does anyone know why plants need carbon dioxide from the air?????????
Answer:
For plants to perform photosynthesis they require light energy from the sun, water and carbon dioxide.
Answer:
yes plants require sunlight , water and carbondioxide for photosynthesis. So they are important for plants
Osmosis is the diffusion of what across a membrane?
A glucose
B. protein
C. Naci
D. water
Answer:
Water
Explanation:
hope it helps