Oxygen atoms normally have 8 protons, 8 neutrons, and 8 electrons. An isotope of
oxygen with an atomic mass of 18 would have two extra
Charged particles
Neutrons
Protons
Electrons
Answer:
The answer is Neutrons
An isotope of oxygen with an atomic mass of 18 would have two extra Neutrons. Hence, option B is correct.
What is an isotope?Isotopes are atoms with the same atomic number but different atomic masses. In other words, atoms having the same number of protons but different numbers of neutrons are called isotopes. Although isotopes have highly similar nuclear properties, they have equivalent chemical properties.
For instance, hydrogen has three isotopes. While tritium (one proton and two neutrons) is radioactive, the other two isotopes are unstable. Stable isotopes exist for most elements. For several elements, radioactive isotopes can also be produced. When compared to lighter isotopes of the same element, heavier isotopes often react more slowly.
An isotope has a different number of neutrons. Therefore, option B is correct.
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If the offspring of the cross showed ccdominance, what would the eyes of the offsping look like?
Answer.. the offspring would have one circle eye and one star eye.
Answer:
That is what I would choose
Explanation:
When two different phenotypes of an organism are crossed, a third phenotype is created in which both of the parental traits are present. This is known as codominance.
What are the results of codominance cross?The concept of codominance states that although both phenotypes are dominant, they cannot coexist. Codominance would result in patches rather than merging, with areas of prominent white expression and areas of dominant red expression.
The statements made about codominance are all accurate. The full expression of both alleles is present.
The distinct results of both alleles are present in the heterozygous phenotype. A multiple-allele characteristic has (less than / only / more than) two alleles in the corresponding gene.
Therefore, The offspring would have one circle eye and one-star eye.
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is the pull of gravity on an object.
O a. Mass
O b. Element
N
O c Weight
d. Matter
Moving to another question will save this response.
Answer:
Mass
Explanation:
The measure of the pull of gravity on an object is called weight. For an object to have weight it must have mass.
Which of the following organelles would you not find in a plant cell?
Answer:
Animal cells each have a centrosome and lysosomes, where as plant cells do not.
Explanation:
Animal cells each have a centrosome and lysosomes, where as plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
In the fluid mosaic model, where would you most likely find the transport proteins?
Attached to the outer portion of the phospholipid bilayer
Embedded within the hydrophobic and hydrophilic regions of the bilayer
Flipping, alternating between the hydrophobic and hydrophilic regions of the bilayer
Roaming within the phospholipid bilayer
thanks so much
Answer:
B: Embedded within the hydrophobic and hydrophillic regions of the bi layer
Explanation:
They are integral protiens and have to be inside
i took a test
This movement aids the cell membrane in preserving its function as a partition separating the interior and exterior cell surroundings. Thus option B is correct.
What is the role of transport protein in fluid mosaic model?Integral proteins protrude from each end of the phospholipid bilayer and are tucked inside. Larger molecules like glucose can be transported through cell membranes with the aid of integral proteins.
They have sections that match the polarity of the phospholipid bilayer, known as "polar" and "nonpolar" regions.
This movement aids the cell membrane in preserving its function as a partition separating the inside from the outside environments of the cell.
Therefore, in the fluid mosaic model, the transport protein is connected to the phospholipid bilayer's outer layer.
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which of these is a pure substance that cannot be broken down by a chemical reaction?
Answer: Element
Explanation: An element is a pure substance that cannot be separated into simpler substances by chemical or physical means.
Each element has unique physical and chemical properties.
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How long has the light from a star 125,000 light-years away been traveling to reach Earth?
Answer:
Explanation:
Jan 02Jan 02, 2020 · Question: "How can the light of stars billions of light ye the maximum distance that light can travel in one year in the vacuum of space. Consequently, it takes billions of years for light to travel billions of light ..., 2020 · Question: "How can the light of stars billions of light years away from the earth have reached us if the earth is only thousands of years old?" Answer: Distant Starlight - A light-year is the maximum distance that light can travel in one year in the vacuum of space. Consequently, it takes billions of years for light to travel billions of light ...
A group of organs that work together to perform a major function is called
True or False we can understand why we see natural resources like copper and gold where they are because we understand under which conditions they formed
Answer:
False
Explanation:
We cannot see the air like wise we can see copper and gold what they are we know which metal they are invented .
I think false
how does the internet work
Explanation:
internet is used by everyone this can be useful sometimes. this transmits many data and media across interconnected devices. it works its way to a packet controlling the network which follows the IP ( internet protocol ) and the transport control protocol ( TCP )
(hope this helped )
What is a common source of proteins within the body (not from food)?
Answer:
I hope this helps
Explanation:
When a cell needs to make proteins, it looks for ribosomes. Ribosomes are the protein builders or the protein synthesizers of the cell. They are like construction guys who connect one amino acid at a time and build long chains. Ribosomes are special because they are found in both prokaryotes and eukaryotes.
List five organelles eukaryotes have that prokaryotes do not have. ( 5pts)
Answer:
Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria, and Cytoskeleton
Explanation:
The characteristics that eukaryotes have are lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.
What are eukaryotes?Eukaryotes are lifeforms with nuclei and other membrane-bound organelles. Eukaryotic organisms include all animals, plants, fungi, and protists, as well as the majority of algae.
Prokaryotic organisms are the ones lacking a well developed nucleus. They do not possess lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.
Thus, these are five organelles that are present in eukaryotes but are absent in prokaryotes.
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the organelles that most directly provide this energy are known as a
Answer:
The mitochondrion is an organelle that makes energy available to the cells. It is like the power plant of the cell.
Explanation:
hope this helps!!!
An organism that has adaptations that enable it to hibemate for long periods of time is more likely to by found in which of the following biomes:
forest
desert
grassland
tundra
Which of the following would be particularly damaging to the chaparral biome?
a.
wildfires
b.
flooding
c.
drought
d.
none of the above
ANSWER IS D- NONE OF THE ABOVE
Answer:
Wild fires
Explanation:
Because a chaparral biome is sort of a forest.
Answer:
D. None of the above
Explanation:
Chaparal Environments posses organisms that have adapted to wildfires as a result dense vegatation and low humidity during the summer , they have adapted to flooding evidently from the high amounts of precipitation during the winter months, and they have adapted to drought seeming as the majority of the inhabitance store water or adapt to use less of it.
define Vasoconstriction
in a way a elementary kid would understand
Vasoconstriction occurs when the blood vessels tighten, which causes the blood flow to slow down.
What Is Behavior?
Behavior is a response to stimuli in the environment. Many animals use antipredatory
behavior to scare or startle
predators. This will either cause
the predator to leave, or give
the prey time to escape.
The spiny flower mantis on the left is naturally camouflaged as a flower. The one on the right
has its wings spread and
eyespots visible.
1. Describe how the behavior of
this insect could help it avoid
predation.
PLEASE HELPPP ASAPPP
Answer:
Many plants and animals use repellent chemicals to deter predation. Millipedes secrete hydrocyanic acid when disturbed.
If two heterozyotes for dwarfism have children what proportion of their kids would you expect to be of typical size and not exhibit dwarfism?
Answer:
3/4 or 75%
Explanation:
This question involves a gene coding for height in humans. The allele for normal height (D) is dominant to the allele for dwarfism (d).
If two heterozygotes for dwarfism are crossed i.e. Dd × Dd, the following gamete will be produced by each heterozygote parent:
Dd - D and d
Using these gametes in a punnet square (see attached image), the genotypes of the expected offsprings will be as follows- DD (1) : Dd (2) : dd (1)
(1) DD - typical normal size
(2) Dd - heterozygous normal size
(1) dd - dwarf
The offsprings expected to be of typical size and not exhibit dwarfism are offsprings DD and Dd, which represent 3/4 of the offsprings. Hence, the proportion is 3/4 or 3/4 × 100 = 75%.
Help! Will give brainlist
Which of the following is true of cholesterol? 4 are correct.
A. it makes up part of the cell membrane structure
B. it is the precursor molecule to make sex hormones and bile
C. it is not found in animal products such as beef
D. it enters the cell via cell-mediated endocytosis
E. it is not found in dairy products such as butter
F.it is made by the liver
Answer:
F, it is made by the liver
Explanation:
I need help please with this...
Answer:
If the order is solid, liquid, gas
Explanation:
Compressibility:
solid- not compressible
liquid- not compressible
gas- compressible
Shape and Volume
solid: definite shape and definite volume
liquid: indefinite shape and definite volume
gas: indefinite shape and volume )varies with temperature and other factors)
Pls help i dont understand :(
Answer:
I think it might be D
Explanation:
I hope this helps~
Answer:
d
Explanation:
eukaryotes have membrane bound cells, while prokaryotes dont
Francine is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. She begins by drawing the diagram shown below. Her friend Byron evaluates the model, and suggests that she thicken the arrow leading from fossil fuels to the atmosphere. His reasoning is that fossil fuels are being burned at a much faster rate than natural processes are restoring them. If Francine adopts Byron’s suggestion, how could her model be used to explain a significant change to Earth's systems?
Answer:
After adopting the suggestions of Byron the new or revised model would show that using fossil fuels at a rapid rate would lead to higher inputs of carbon dioxide to the atmosphere which will not be removed by the natural process of removing the excess amount of the carbon dioxide by the process of the photosynthesis and other.
The carbon dioxide would increase due to this and cause trapping of the solar heat in the atmosphere which leads to the greenhouse effect to warm the earth. That ultimately changes the climate of the earth.
Is water abiotic or biotic?
Answer:Abiotic
Explanation:
There are two categories of these factors: abiotic and biotic. Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.
Why can whales not breathe underwater?
Answer:
Whales are mammals and do not have gills, so they cannot take the dissolved oxygen that is in the water and turn in into a oxygen that they can breath.
Explanation:
Answer:
because they are mammals
Explanation:
the need to breath air into there lungs
example of kinetic energy.
Answer:
Moving Car. ...
Bullet From a Gun. ...
Flying Airplane. ...
Explanation:
Help me answer this please ASAP
Which option contains all of the other options listed?
gene
chromosome******
chromatid
centromere
Answer:
The chromosome contains all of the other options listed.
Explanation:
In eukaryotes, the complete chromosome is composed of only one lineal and extremely long DNI molecule. DNA is intimately associated with two types of proteins: histones, which are structural proteins, and non-histone proteins that mediate different functions of DNA. DNI associated with histones is called chromatin. Histones are responsible for packaging the DNI molecule.
In the interphase, before cellular division, chromatin is in a diffuse, lax, uncondensed state. When cellular division is about to happen, chromatin begins to condensate, and the chromatin strand generates a copy or clon so both of the daughter cells can get the same genetic information. At the beginning of the prophase, DNI is condensed in a well-defined chromosome formed by two sister chromatids. In metaphase, two chromatids joined by a centromere form the typical chromosome.
So, one chromosome is composed of two sister chromatids condensated and joint by the centromere. It looks X-shaped.
Genes are located in chromosomes, specifically in the DNA strand.
Answer:
chromosome
Explanation:
please help :(( How many Phosphorus atoms are in the chemical equation H3PO4
A. 4 Phosphorus atom
B. 1 Phosphorus atom
C. 12 Phosphorus atom
D. 3 Phosphorus atom
What is the difference between eukaryotic and prokaryotic cells?
Eukaryotic cells are found in bacteria and prokaryotic cells are not.
Prokaryotic cells are found in plants and animals and eukaryotic cells are not.
Eukaryotic cells contain organelles and DNA enclosed within a nucleus and prokaryotic cells do not.
Prokaryotic cells contain no organelles except DNA enclosed within a nucleus and eukaryotic cells do not.