What is the percent by mass of a solution that contains 3g of salt in 12 g of solution?
Answer:
25% salt
Explanation:
(3÷12)×100
=25%
Help ASAP
thanks...............
Answer:
1. Ozone :- Form of oxygen having three atoms of oxygen to a molecule.
2. Mesosphere :- Later of the atmosphere just above the stratosphere.
3. Stratosphere :- The layer of atmosphere just above the troposphere where the temperature remains fairly constant.
4. Thermosphere :- The layer of atmosphere above the mesosphere where temperature are the highest in the atmosphere.
5. Ozonosphere :- Region in the upper stratosphere where the ozone is concentrated.
6. Aurora :- Streamers and band of light appearing in the sky at night , especially in polar region.
7. Ionosphere :- Layer of atmosphere containing ions; above the stratosphere.
8. Ion :- An electrically charged atoms.
9. Troposphere :- The layer of the atmosphere nearest the Earth in which most weather changes occur.
Which organism is most closely related to the fish?
A lamprey
B mouse
C frog
D shark
Answer:
B, mouse Bc if you look at the cladogram the mouse line is the only one touching the fish line, therefore it would be most closely related
Answer:
B, mouse
Explanation:
anyone help please
need answer immediately
Answer:
1. It's difficult to find out if someone is blood doping because the body has red blood cells. First the doctors get blood samples. Because the body constantly produces new blood, the blood that was stored shows that it is old with the blood samples it shows that there are some new and some old blood cells, which is how you can tell if they are doping.
2. Hemoglobin is a protein that is produced by the body that carries oxygen in the red blood cells the more red blood cells the more hemoglobin you have. Ex; If the athletes have a high level of hemoglobin on the day of the race than it had been days or weeks before, to shows that the athlete was blood doping.
3. It can help the body produce more blood cells to carry more oxygen (get more energy) and the body can get used to that kind of high altitudes and climates. Which leads to you getting even more energy at lower altitude levels.
A section of one DNA strand has the sequence ACC GAG GTT. What is the sequence of the strand it binds to?
Answer:
UGGCUCCAA
Explanation:
Basically when you transcribe DNA into mRNA, you find the complementing base pair, for example if G is written in the DNA, the mRNA would show C, and if an A was in the DNA, a U would be shown. It is NOT THYMINE in RNA!! This changes to Uracil in RNA, and that is VERY important. The reason why it is flipped is because of the tRNA. So 3 mRNA nucleotides make a codon, and the tRNA are also in sets of 3, but are called anticodons. The tRNA is complementary to the mRNA strand, AKA the same as the DNA strand except with Uracil instead of Thymine. This is because Thymine breaks down in the presence of Oxygen and so is replaced by Uracil.
By looking at a plant, how can you tell if it is a cycad and not a palm?
Answer:
D. look for cones
Explanation:
A complete carbohydrate is a macromolecule is it a large or small molecule
Answer: Term Meaning
Monomer A molecule that is a building block for larger molecules (polymers). For example, an amino acid acts as the building blocks for proteins.
Polymer A large molecule made of repeating subunits (monomers). For example, a carbohydrate is a polymer that is made of repeating monosaccharides.
Explanation:
Use the diagram below to help you to choose ALLL the CORRECT answers for the question: What are the differences between Meiosis i and Meiosis II?
(MULTIPLE CHOICE)
A In Metaphase I and Metaphase II the chromosomes line up differently because there are a different number of copies
B Telophase and cytokinesis do NOT happen in Meiosis II
C After Meiosis II the 4 daughter cells undergo cell specialization to become eggs or sperm, which does not happen after Meiosis I
D In Prophase I the chromosomes crossover, in Prophase II they do not crossover
Answer:
a
Explanation:
Control and Data
a tentative, testable scientific explanation
useful for determining the effect of the independent variable
Answer:
cacacacacacacacacacacacacacacaca
Answer:
kkdm
Explanation:
kmlnui
Humans drill wells into Earth's crust to draw out groundwater for drinking and
irrigation of crops. Which spheres are interacting? *
O
Atmosphere, biosphere, and hydrosphere
O Biosphere, hydrosphere, and geosphere
Geosphere, hydrosphere, and atmosphere
Atmosphere, biosphere, geosphere, and hydrosphere
Answer:
Biosphere, geosphere, hydrosphere
Explanation:
why are fossil fuels considered finite?
Answer:
A finite resource is something that can only be consumed once without possibility of being recycled for re-use. Because fossil fuels are burned, they cannot be reused and are therefore a finite resource.
Explanation:
I’ll give brainlist if it’s outstanding
How do parachutes work?
Two paragraphs
Use all these terms in your paragraph: Gravity, Acceleration, terminal velocity, force, air resistance.
Help plssss
Answer:
Parachutes are made of light but strong materials to keep yyouin the air and have a safe landing :)
Explanation:
Which material would get electrons from the source to the load the fastest
Answer:
However, graphene has far fewer electrons than copper, so in graphene the electrical current is carried by only a few electrons moving much faster than the electrons in copper." In semiconductors, a different measure, mobility, is used to quantify how fast electrons move.
Answer:
D
Explanation:
D
True or False? a human has 23 chromosomes
Answer:
False
Explanation:
A cell normally contains 23 pairs of chromosomes.
How might global climate change effect iguana populations?
Answer:
Since iguanas are cold blooded animals and can not regulate their own body temperatures, once temperatures reach 40° they become immobilized and they cant move, so if it is cold they will die.
What is the correct order for the levels of organization and living systems from the simplest to the most complex
Answer:
organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Explanation:
The biological levels of organization of living things arranged from the simplest to most complex
Explain how asexual reproduction works. what organisms undergo asexual reproduction?
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from a single cell or from a multicellular organism, inherit the genes of their single parent.
Answer:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction, either from from a single cell or from a multicellular organism, inherit the genes of their single parent.
(it what it says on web.)
Explanation:
The forces shown in the diagram caused the rock layers to
A Fault
B Folohy
С Form
D Expand
Where do volcanoes usually form?
A. within 10 miles of the ocean
B. between Earth's mantle and core
C. at fault lines between tectonic plates
D. within the boundaries of the United States
Answer:
c. at fault lines betwern tectonic plates
Select the correct answer. Which description is an example of gravitational potential energy transforming into kinetic energy? A.)water flowing downhill and spinning turbines
B.)upward currents of wind spinning blades of a windmill.
C.) plants performing photosynthesis D.) loudspeakers producing sound from electrical signals.
Answer:
A- water flowing downhill and spinning turbines
Explanation:
right on plato/edmentum
small fish find shelter amongst the branching coral.
How does this make the reef a hearty food web?
Answer:
uhmmm going out on a limb probably because they can get trapped in the coral
Can you see individual cell without a microscope?
Please help me
Imagine an animal cell lost half of its mitochondria. Explain how the cell would be different.
YOU WILL GET 100 POINTS.
Answer:
Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. ...
Explanation:
Mitochondria are rod-shaped organelles that can be considered the power generators of the cell, converting oxygen and nutrients into adenosine triphosphate (ATP). ATP is the chemical energy "currency" of the cell that powers the cell's metabolic activities. This process is called aerobic respiration and is the reason animals breathe oxygen. Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. In fact, mitochondria enable cells to produce 15 times more ATP than they could otherwise, and complex animals, like humans, need large amounts of energy in order to survive.
mitochondrion is different from most other organelles because it has its own circular DNA (similar to the DNA of prokaryotes) and reproduces independently of the cell in which it is found; an apparent case of endosymbiosis. Scientists hypothesize that millions of years ago small, free-living prokaryotes were engulfed, but not consumed, by larger prokaryotes, perhaps because they were able to resist the digestive enzymes of the host organism. The two organisms developed a symbiotic relationship over time, the larger organism providing the smaller with ample nutrients and the smaller organism providing ATP molecules to the larger one. Eventually, according to this view, the larger organism developed into the eukaryotic cell and the smaller organism into the mitochondrion.
in most animal species, mitochondria appear to be primarily inherited through the maternal lineage, though some recent evidence suggests that in rare instances mitochondria may also be inherited via a paternal route. Typically, a sperm carries mitochondria in its tail as an energy source for its long journey to the egg. When the sperm attaches to the egg during fertilization, the tail falls off. Consequently, the only mitochondria the new organism usually gets are from the egg its mother provided. Therefore, unlike nuclear DNA, mitochondrial DNA doesn't get shuffled every generation, so it is presumed to change at a slower rate, which is useful for the study of human evolution. Mitochondrial DNA is also used in forensic science as a tool for identifying corpses or body parts, and has been implicated in a number of genetic diseases, such as Alzheimer's disease and diabetes.
i hope this is helpful
have a grest day!!:))
Which object did New Horizons observe more closely than any other spacecraft in 2015?
-Mercury
-Venus
-Neptune
-Pluto
Answer is D pluto
Two days later, with about four months remaining before its close encounter, New Horizons finally became closer to Pluto than Earth is to the Sun. Pictures of Pluto began to reveal distinct features by April 29, 2015, with detail increasing week by week into the approach.
A liquid has a ph of 12. It is... A. an acid B. a base C. neutral
Answer:
the answer is B) base
Explanation:
Digestion of ___ begins in the stomach. Select one: a. starch and proteins b. starch and triglycerides c. triglycerides and proteins d. starch and all other oglio-orpolysaccharides
Answer:
c.triglycerides and proteins
What is an allele frequency?
Answer:
the meaning of allele frequency is representing the incidence of a gene variant in a population
Explanation:
Why do people, animals, and all other organisms do cellular respiration?
O To make food/glucose for themselves. As a byproduct they make the oxygen that we need.
O To make carbon dioxide and water that animals can use.
O To make ATP (cell energy). Carbon dioxide and water are also produce as byproducts.
To make oxygen, carbon dioxide, and glucose for themselves.
Answer:
C
Explanation:
To make ATP(adenosine triphosphate), cell energy. Carbon dioxide and water are also a byproducts
nvm i got it but take some points by saying this question what are you thankfulll for
Answer:
I am thankful for my-
-friends
-family
-clothes
-food
-education
-shelter
The difference between PCR and real-time PCR is thatA. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.B. real-time PCR can amplify DNA a billion-fold within just a few hours, while standard PCR cannot.C. real-time PCR can determine the DNA sequence, while standard PCR cannot.D. real-time PCR uses DNA polymerase, while standard PCR does not.
Answer:
The correct answer is A. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.
Explanation:
PCR (Polymerase Chain Reaction) is a molecular biology technique. Conventional PCR and real-time PCR are diferent types of PCR, and are both used to exponentially amplify DNA molecules. In both types, a polimerase enzyme is employed to sinthesize DNA copies. The main difference is that conventional PCR is qualitative whereas real-time PCR is quantitative. So, real-time PCR permits not only to detect and amplify DNA but also permits to perform a quantification of the target DNA. This is accomplished by measuring a fluorescence signal - which is directly the amount of DNA amplified- during the course of the reaction.