Why do the atoms in most solids move more slowly than those in liquids?
Answer:
atoms are incredibly small and cannot be seen with even the most powerful light microscope
A ______ would be a short-term energy source. (Please Help!) :)
Answer:
lightbulb?
Explanation:
a lightbulb will run out but can last a while
What advantage did sharks have over its rivals that didn't survive the
Devonian extinction?
Describe the structure of atoms,including the masses, electrical charges, and locations of protons, neutrons and electrons.
Everything on earth is made up of a fundamental particles that is impossible to see with the naked eye this particle is called the atom. There a over a 100 atoms or more in science. At the center of the atom is the nucleus which contains protons and neutrons. Electrons can be found moving around the orbitals or energy levels , while most of the area outside the nucleus is empty space .
Most of the mass of an atom is concentrated at the center of the nucleus.
Atoms are made up of three subatomic particles called
1. Protons
2. Neurons
3. Electrons
protons - has positively charge particles with a charge
of +1
Neutrons- has no charge it is neutral, 0 charge.
Electrons- has a negative charge particles with an charge of -1.
Relative mass of a particle is the mass compared to the mass of a proton
Relative charge of a particle is the charge compared to the charge on a proton.
Atom is a basic unit of matter have proton and neutron containing nucleus at the center and surrounding electrons.
What do you mean by atom ?
Atoms are the smallest and basic units of matter.
A negatively charged electron which surround the nucleus of the atom moving around the orbitals or energy levels.
The nucleus does not change during chemical reactions, only in nuclear reactions it will change.
In nucleus equal number of protons and neutrons, atomic number is the number of protons and atomic mass is made of the sum of protons and neutrons.
Relative mass of a matter is the mass of a proton while Relative charge of a matter is the charge on a proton.
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Which nutrient is not found in the atmosphere (in significant amounts)?
Answer:
Phosphorous
Explanation:
Phosphorous is an essential nutrient for plants and animals, but is not very common in the biosphere. This nutrient is found in soil and rock, but does not enter the atmosphere.
What are the two types of reproduction and explain?
Explanation:
There are two types of reproduction: asexual and sexual reproduction. Though asexual reproduction is faster and more energy efficient, sexual reproduction better promotes genetic diversity through new combinations of alleles during meiosis and fertilization.
Answer: sexual and asexual
Explanation:
sexual is two people asexual is by itself
SOMEONE PLS HELP WITH THESE TWO QUESTIONS
1)Chad’s family just moved into a new home. The sun went down as Chad was moving boxes into the house, so he had to turn on a light to see. Which statements are true about the power Chad used? Choose the two statements that apply.
A. The power he used to move the boxes can be found by determining the rate at which work was done on the boxes.
B. The power Chad used to move the boxes is the force he used times the distance he moved them.
C. The power of the light Chad turned on is the amount of energy changed from electricity to light.
D. The power of the light Chad turned on is the amount of energy transferred per time.
2)Raul dug a hole in his yard to repair a water pipe. It took him 2 seconds to apply a force of 50 Newtons to push the shovel 0.25 m into the ground. How much power was used?
A. 0.01 watts
B. 6.25 J/s
C. 25.00 N•m•s
D. 100.00 watts
Answer:
1.) A and D
2.) B
Explanation:
The power he used to move the boxes can be found by determining the rate at which work was done on the boxes. The power of light Chad turned on is the amount of energy transferred per time. So the correct options are A and D. In 2nd, the power used was 6.25 J/s. So the correct option is B.
What is power?
The watt, denoted by the letter W, is the common unit used to measure power. James Watt, a Scottish businessman and inventor, is honoured with the unit's name. The watt is certainly a term you frequently encounter in daily life. Electrical devices like light bulbs and stereos commonly advertise their power output in watts. One watt is equivalent to one joule of work performed each second by definition.
Horsepower is another power unit that is still extensively used. This was first used to describe the ability of a regular horse to spin a capstan in the 17th century and is often represented by the sign hp. Since then, a metric horsepower has been defined as the force needed to raise a 75 kg mass a metre in one second, where 75 kg is the mass's weight in kilogrammes.
Therefore, for 1) the correct option is A and D and for 2) the correct option is B.
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can someone help on 31 a and b, and 32??
Answer:
the answer to 32 would b option C cellulose
A mouse is examined in the laboratory researchers extracted a skin and liver cell from the mouse which statement correctly Describes the cells
A. The DNA from both cells is the same, however the proteins produced in each cell are different.
B. Both the DNA and the proteins produced in each cell are identical.
C. The DNA from both cells is different, however the proteins produced in each cell are the same
D. Both the DNA and the proteins produced in each cell are different.
Answer:
d
Explanation:
If viruses are not living, how do they cause disease?
Answer:
In an episode of the classic 1950s television comedy The Honeymooners, Brooklyn bus driver Ralph Kramden loudly explains to his wife, Alice, “You know that I know how easy you get the virus.” Half a century ago even regular folks like the Kramdens had some knowledge of viruses—as microscopic bringers of disease. Yet it is almost certain that they did not know exactly what a virus was. They were, and are, not alone.
Explanation:
its in the answer
Question 2 (2 points)
Which of the following best explains why matter must travel through cycles?
a
There is an unlimited amount of matter in the universe, so it can take on any form at
any time.
b
There is a fixed amount of matter in the universe, so it must take on different forms
at different times.
Elements flows within ecosystem in various ways. It is important for matter to travel through cycle as there is a fixed amount of matter in the universe, so needed to be recycled.
What is cycling of matter?Matter cycling is movement of matter from one form to another or from one place to another on the Earth, inside its ecosystems.
Matter is constantly cycling from place to place, and this can have both positive or negative effects. Matter also cycles naturally, or can be due to human activity.
As there are only finite number of nutrients on the Earth, so, it is necessary for them to be recycled in order to ensure the continued existence of living organisms.
Thus, option b is correct.
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Researchers propose a model to explain variation in phytoplankton cell sizes in a marine
environment. They base their model on the idea that smaller cells absorb nutrients more
efficiently. The researchers predict that the mean diameter of phytoplankton cells will
change by 50 micrometers for every 5-kilometer increase in distance from the shore
because of a gradual decrease in nutrient availability. To test their model, the researchers
determine that the phytoplankton cells found closest to shore have a mean diameter of
900 micrometers.
Based on the model, what will be the mean diameter of the phytoplankton cells that are
found 25 kilometers from shore?
Answer:
650 micrometers
Explanation:
An enzyme in a cell became dysfunctional because of an alteration. As a result, the DNA strands would not separate to begin the replication process. Which enzyme has been affected?
Answer:
C. Helicases
Explanation:
Helicases to be termed as enzymes that is blind and contains acid i.e. remodel nucleic or have protein i.e. nucleic acid. It is important as the time of DNA replication as it divided the DNA i.e. double stranded into one single standard that permits each and every strand for copied it
Also it cracks the bonds i.e. hydrogen that lies between the two strands this could create a replication fork.
Therefore in the given case, the helicases is affected
Answer:
helicases
Explanation:
its just right
How is an animal cell divided?
A. A cell plate pushes the two new cells away from one another.
B. The cytoplasm is pinched into two roughly equal parts.
C. The nucleus splits during cytokinesis.
Answer:
The answer would be C!
Explanation:
Social sciences are
a. the observable facts or events that involve human society.
b. how people relate to one another and influence each other's behavior.
the hidden meanings behind human actions.
d. the disciplines that study human social behavior or institutions and functions of human society in
a scientific manner.
C.
Answer:
D is the correct answer. (please give me brainliest?)
Social sciences are the disciplines that study human social behaviour or institutions and the functions of human society in a scientific manner. So the correct option is D.
What is the importance of social science?
A collection or a group of disciples related to academic disciplines focusing on the behaviours of the individuals within society is called social science. It is the explanation of the working of the society which explores various aspects from economy to psychology.
The study of social science is relatively new in the field of scientific study. It gained popularity in the 20th century. Advertising, economics, psychology, teaching, managing etc are only some of the fields relied on social science.
The people who study social science are called social scientists. They rely more on the interpretation of the information and qualitative aspects of the methodology of methodologies.
The study of social sciences is important as they help in understanding the behaviour and motivations of the people in the world around us. It also helps in self-awareness.
Therefore the correct option is D.
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A web of proteins in the cyoplasm that help support, anchor organelles and also help with movement is the __________.
Answer:
The cytoskeleton
The cytoskeleton functions to create a network organizing the cell components and to also maintain the cell shape. It also provided a uniform movement of the cell and its organelles, by the filament system network found in the cell's cytoplasm.
Hope this helps u...
List two ways in which bacteria are important to humans. Briefly explain these ways.
One way is that the bacteria that lives in your intestine help you digest. Ususally things in your intestine that the human body can't breaking it down along with the other food. Also meaning that that bacteria also aids in taking in nutrients.
The second way bacteria can also help you get over an illness. The bacteria in your immune system fight the bacteria that is making you sick and gets rid of it.
Hoped that helped
can y’all give me a hand?
Answer:
C is correct hope u get a good grade:)
Explanation:
Which two processes would most likely cause metamorphic rocks to change into sediments?
compaction and erosion
O cementation and weathering
O erosion and weathering
O heating and compaction
Answer:
erosion and weathering
Explanation:
Two processes that would most likely cause metamorphic rocks to change into sediments are erosion and weathering.
What is a sedementary rock?A sedementary rock is a rock that is formed by the breakdown and compaction of other rocks. Hence sedementary rocks are a sort of secondary rocks.
It then follows that, two processes that would most likely cause metamorphic rocks to change into sediments are erosion and weathering.
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1.
When the level of sugar in the blood is too high the excess sugar is stored in the
muscle to be used later as needed. Which characteristic of life is described here?
A. Ability to evolve
B. Use of energy
C. Maintaining an internal balance
D. Response to environment
Why are answer choice B is incorrect? Include in your response an explanation or
example of the incorrect choices. *
Your answer
Answer:
B
Explanation:
The characteristic of life is described in order to make reference that the glucose is stored in the muscle to be used later is MAINTAINING an internal balance (Option C).
Homeostasis refers to the functions of the body that work to maintain internal environmental conditions relatively constant.Insulin and glucagon are fundamental hormones that help to control sugar levels in the blood and thus maintain this homeostatic state.In muscle, glucose (sugar) is stored as glycogen.Glycogen is a polysaccharide composed of many subunits (monomers) of glucose.
In conclusion, the characteristic of life is described in order to make reference that the glucose is stored in the muscle to be used later is MAINTAINING an internal balance (Option C).
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Give 2 examples of cholesterols.
Answer:
Burgers, and frys
Explanation:
Both those foods are filled with cholesterol and fat.
Which is most likely true of prokaryotic cells? A. They evolved on Earth before eukaryotic cells. B. Their DNA is contained in the nucleus. C. They are large, complex cells. D. Their organelles are surrounded by membranes.
Answer:
A. They evolved on Earth before eukaryotic cells.
Explanation:
Eukaryotic cells are more complex that prokaryotes so it would make sence taht they would have evolved before them.
34. The molecules that form much of the cell membrane are
Answer:
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.
Explanation:
plz help
will give the brainliest!
Urgent!!
Answer:
3B
4A
5a) hormones: regulatory substances produced by a body to stimulate cells into action. secreted: produced endocrine glands: a chemical message network that regulates hormones.
5b) A: Insulin, B; Adrenaline, C: Testorone, D: Oestrogen.
What life circumstance most directly affects the type of weather emergencies you are most likely to experience?
Your occupation
Your Income
Your location
Your race
In a population of 45 tigers, 10 die and 5 are born. What is the new population?
Answer:
40 tigers
Explanation:
45-10= 35
= 35+5= 40
can someone please give me a question about genetics and heredity!
Answer:
Can cancerous cells be passed down by genetics and inherited to family?
Explanation:
hope it helps
Answer:
Genetics : Why don't identical twins look the same ?
How much information is in our DNA ?
Heredity : Can hereditary diseases be cured?
Explanation:
If a cell were lacking lysosomes, what would the cell be unable to do?
The cell would be unable to get rid of its excess waste. The lysosome is an organelle specializing in getting rid of worn out things in the cell.
What relationship is shown in the graph? A) Competitive Exclusion Relationship B) Habitat-Niche Relationship C) Biotic-Abiotic Relationship D) Predator-Prey Relationship
Answer:
The answer is Predator-Prey Relationship
Explanation:
what similarities would you expect to find in highly resilient ecosystems
Answer and explanation:
An ecosystem that is highly resilient is one that has the capacity to resist subjected damage by maintaining its normal patterns of biomass production and the cycling of nutrients. This damage can be anything from fires to deforestation.
A highly resilient ecosystem can be expected to adapt well to change, sometimes permanently, to survive indefinitely. For an ecosystem to be resilient, it has to be flexible and be able to adjust to uncertainty. Highly resilient ecosystems tend to have reproductive cycles, trophic cascades, and population connectivity - all of these characteristics give these ecosystems better chances of surviving different types of disturbances.