Complete Question:
Which does not describe the relationship between nucleus and the electron cloud of an atom?
Group of answer choices.
A. the electrons move faster than the particles in the nucleus
B. the masses of the nucleus and electron cloud are balanced
C.the charges of the nucleus and electron cloud are balanced
D.the electron cloud takes up much more space than the nucleus
Answer:
B. the masses of the nucleus and electron cloud are balanced
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
An electronic cloud can be defined as a group of negatively charged electrons circulating around an atomic nucleus. It is typically referred to as valence electrons.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Both the protons and neutrons of an atom of a chemical element have a mass of 1 atomic mass unit (amu) while an electron have an approximate mass of 0 atomic mass unit (amu).
Hence, the masses of the nucleus and electron cloud of an atom cloud are not balanced.
which best explains a system
A structure that carries out a specific function
B group of organs that carry out different function
Croup of organs that work together to carry out a specific function
D way that organism operate
Answer:
C
Explanation:
Group of organs that work together to carry out a specific function - > Organ system
How is energy "lost" by organisms?
A.heat
B.cellular respiration
C. egested waste
D.biomass
Answer:
The think your answer is option B
Answer:
Heat energy lost by organism.
Explanation:
I think no A is the answer
Question 3 of 34
Which of the following explains how polar molecules form?
O A. The two atoms in a bond share electrons equally.
B. One atom transfers its electrons to another atom.
O C. Electrons are more attracted to one of the atoms involved in a
bond.
O D. Protons are more attracted to one of the atoms involved in a bond.
True or False: Photosynthesis can take place under water.
True
False
Answer:false
\
Explanation:
1. Calculate the volume occupied by 0.845 mol of nitrogen gas at a pressure of 1.37 atm and a temperature of 315 K *
Answer:
[tex]PV=nRT \\ 1.37 \times V = 0.845 \times 0.083 \times 315 \\ V = 16.125 \: {cm}^{3} [/tex]
Plants and animals are multicellular organisms made of organ systems that work together to maintain homeostasis. Body systems
are made of organs and organs are composed of tissue. Tissues are groups of cells that work together to perform functions.
Examine each of the examples below. Which of these are organs found in plants or animals? Select ALL that apply.
A
A
)
epithelial
B)
eye
leaf
D)
stem
vascular
The organs found in plants or animals is stem vascular. Therefore, option (D) is correct.
What are the features of the stem vascular?A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, stores nutrients.
The vascular system of plants, complete with xylem and phloem, fills both purposes. Stems, along with roots, also store food for the plant. Pith, a tissue that lies in the center of the stem.
A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem.
Learn more about stem vascular:
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What is thermoregulation?
the maintenance of a consistent blood clotting ability
the maintenance of a consistent blood glucose level
the maintenance of a consistent water concentration
the maintenance of a consistent body temperature
Woolly mammoths are an extinct species of elephant that lived in very cold climates.
They had very small ears.
Compared with the large ears of modern elephants, small ears would have assisted in
survival of the mammoths by
A. Decreasing the core body temperature
B. Increasing the effects of heat conduction
C. Increasing the radiation of heat from the body
D. Decreasing the surface area through which heat is lost
Answer:
The answer is B: Increasing the radiation of heat conduction
what branch of biology deals with the study of herdity amd variation
Answer:
Genetics.
Explanation:
Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.
the bases are paired by____ bonds along the axis of the molecule
Answer:
The bases are paired by hydrogen bonds along the axis of the molecule.
Explanation:
this is the correct answer!!
anseer
Explanation:
hydregon is the answer
Which of the following would be an accurate food chain that could be found in the
tropical community?
A) cougar --> turtle --> banana
B) insect --> frog --> ocelot --> parrot
C) fruit --> turtle --> cougar
D) vegetable --> insect --> mushroom
Answer: B
Explanation:
The animals that live in tropical areas are in option B. Cougars can not live in the tropics, they live in the cold biomes. In the tropics, there are many insects, and frogs eat them. Ocelots eat the frogs, and the ocelots are eaten by parrots. The rest of the options are valid food chains, but they would not function in the area of tropics. The answer to the question is option B.
Select the correct answer.
Which adaptive management stage helps us understand what objectives are actually met?
ОА
design
OB.
monitor
Oc. .
implement
OD. adjust
OE
evaluate
Which is a reason why wetlands are important?
O They move water to higher ground during flooding.
O They filter pollutants out of water.
O They are estuaries.
O They provide minerals.
Answer:
They are estuaries
Explanation:
what is genetics in animals
Answer:
NO HAÁAAAAAAAAAAAAAAAAAAAAAAAAAA
What are the organelles that a plant cell has that is different than the animal cell? Explain each one
Explanation:
A plant cell has cell wall which is otherwise absent in animal cell
cel wall is a freely permeable membrane which allows the entry of all substances . cell wall basically gives rigidity to the cell and protects the cell .
Hope this helps you dear :)
Which is not a component or stage of photosynthesis?
Which is not a component or stage of photosynthesis?
The light reactions
The Calvin cycle
An electron transport chain
The Krebs cycle
Answer:
I believe the answer is C, its been a while since I've learned this
which option is better and why?
Answer:
b
Explanation:
Is the chief justice of the supreme court the commander in chief of the military
No , The Chief Justice of the Supreme Court is not the Commander in Chief of the Military .
What impact did Jefferson’s Louisiana Purchase have on the nation?
An organism is born with a genetic variation not present in any of its ancestors. This variation is most likely the result of
A.circulation of blood
B.competition among individuals
C.respiration
D.a mutation in its DNA
Answer:
D
Explanation:
This is because circulation is blood,respiration and competition have no relation to changing the DNA of an organism
what helps redistribute the earths heat
1. wind
2. clouds
3. sun
it may be the wind (i'm not sure)
How did the mass extinction that killed the dinosaurs affect the evolution of mammals?
Answer:
With dinosaurs no longer eating them, mammals made quick evolutionary strides, assuming new forms and lifestyles and taking over ecological niches vacated by extinct competitors. ... Sixteen mammal species were discovered, with skulls and other bones fossilized after being buried in rivers and floodplains.
Explanation:
Is there difference between dorsal and posterior ?
Answer:
No not at all
Explanation
Answer:
No, they both mean the same thing.
Explanation:
Posterior (or dorsal ) Describes the back or direction toward the back of the body.
According the cell theory, can you create a cell by combining molecules in a laboratory?
Answer:
only if you have the materials
Explanation:
cells are generated from duplicating, so you'd have to have every single part that made up a cell and put it together which would require microscopic precision
The cell membrane is described as being fluid because:
A. the phosphate groups move between fatty acids.
B. the membrane lets materials pass through it.
C. the fatty acid chains are inside it.
O D. the phospholipids move from side to side.
Answer:
D
Explanation:
The fluid mosaic model got its name because the plasma membrane resembles a mosaic formed by proteins embedded in a fluid of lipids. ... In the fluid mosaic model, the plasma membrane is basically composed of a lipid bilayer in which proteins are inserted.
Which of the following processes can lead the evolution of new species?
A. Macroevolution
B. Microevolution
Answer:
the answer is Microevolution
Which statement best describes the limits of science?
O A. Science can answer only mathematical questions.
B. Science cannot answer questions about the natural world.
C. Science can answer any question.
D. Science cannot answer questions about what people should do.
Answer:
A
Explanation:
science can answer only mathmatical questions
Groundwater _____. forms when precipitation seeps into the soil exists above the earth's surface is impossible to pollute is not a usable water source for humans
Answer:forms when precipitation seeps into the soil
Explanation:
Answer:
It's B
Explanation:
I got it correct when I did it on my quiz on oddseyware.
To obtain the atomic weight in an atom, add the:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons
Sita wants to grow sugarcane in the garden. She planted leaf ,stem and root of sugarcane,which of these will give rise to a new plant.
Answer:
The correct answer is - stem.
Explanation:
Sugarcane plants are grown from the cuttings of the sugarcane and planted in soil horizontally. There are rings present at each stem form by the falling of the old leaves. Roots come from the stems planted horizontally from small nodes present on stems.
Sit needs to cut the sugarcane stems and planted them in the soil horizontally to grow the sugarcane plant but it needs to be remembered that sugarcane plants required sunlight to grow.
