Answer:
4. wedge and lever
Explanation:
Simple machines are mechanical devices which make our work easier. Examples are : lever, wedge, wheel and axel, pulley, screw and an incline plane.
A stapler is a made up of a level which is the handle part and a wedge which are the staples.
A pulley is a simple machine that has one or more wheels connected with a rope in a loop to make lifting of loads easier because it changes the direction of force applied/pull thus multiplying the force applied. A stapler does not have the wheel and the rope thus answer choice 1 and 2 are incorrect.
A screw is a simple machine that applies torque on a shaft to produce a large axial force on the load. It utilizes the conversion of rotational motion to a linear motion and a torque to a linear force. A stapler mechanism does not involve rotational motion or rotational force, hence answer option 3 is incorrect.
A stapler is made up of a combination of two simple machines: the wedge and the lever. The correct option is 4.
A stapler utilizes a wedge to perform its primary function. The wedge is the part of the stapler that drives the staple through the paper. It has a sharp, triangular shape that allows it to exert a large amount of force over a small area, making it easier to pierce through the materials.
The stapler also incorporates a lever mechanism. The lever is the long arm of the stapler that is pushed down to drive the wedge and staple into the paper.
By applying force at one end of the lever, a mechanical advantage is gained, allowing the user to apply a smaller force to produce a greater force output at the other end, making it easier to staple multiple sheets of paper together.
Therefore, The correct option is 4.
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(BRAINLIEST QUESTION) Match the genotype to the correct description.
Aa
AA
aa
Answer:
Aa is Heterozygous. AA is Homzygous dominant and aa is Homzygous recessive. Hope this helps you :)
Explanation:
You're enjoying playing with your neighbor's new kittens. You notice than some of them look identical to the mama cat, while others looks different from the mom and from each other. You remember from your science class that traits are inherited from parents. All BUT ONE of these traits is inherited.
Answer:mom had alot of cat because thats what she decided to do to hereslf
Answer:
weight
Explanation:
1. What is the Driving Mechanism of Continental Drift?
Answer:
Holmes proposed that the continents, which “floated” on the Earth's mantle, moved with the convection flow of the magma (hot semifluid below the Earth's crust). The mechanism of continental drift is like the flow of branches floating in the moving waters of rivers, as shown in Figure 3-11.4.
Explanation:
A fish is swimming around the 720-meter perimeter of her pond. If she swims 10 laps in 120 minutes, what is her average speed in m/min?
Answer:
The average speed of the fish is:
60 m/minExplanation:
You must take into account that the fish swims 10 laps, so you must multiply the perimeter by 10 to obtain the total meters swam:
720 m * 10 = 7200 meters.Now, you just must divide the total meters swam by the number of minutes that the fish took to do this, so:
7200 m / 120 min = 60 m/minRemember, ever you do an exercise like this, you must check the units, I mean, the units that the exercise wants to be the same you use, in this case, the average speed of the fish is 60 m/min.
1. Which of the following is not caused by deforestation?
A. Climate change
B. Desertification
C. Global warming
D. None of the
The drama club is selling tickets to their play. Tickets cost $12 for students and $20 for adults. The club sold 150 tickets and made $2,040. The
graph models the situation
150
120
Student
90
Tickets Sold
60
30
0
30 60 90 120 150
Adult Tickets Sold
How many student and adult tickets were sold?
A They sold 30 student and 120 adult tickets.
B. They sold 120 student and 30 adult tickets.
C. They sold 100 student and 50 adult tickets.
D. They sold 50 student and 100 adult tickets.
Answer:
B. They sold 120 student and 30 adult tickets.
Explanation:
120 x 12 = 1,440
30 x 20 = 600
1,440 + 600 = 2,040.
Answer:
B. They sold 120 student and 30 adult tickets.
Explanation:
Which structures do ALL cells have in common
Answer:
a plasma membrane, cytoplasm, DNA, and ribosomes
Explanation:
hope this helps
Answer:
The cell structures that are common to all cells include the DNA or the genetic material; the cytoplasm, which is the fluid where the organelles are suspended in it; plasma membrane, also referred to as the cell membrane that serves as the cell's barrier to the external environment; and the ribosomes, which are the organelles in charge of producing proteins
Explanation:
which of the following will dissolve in water
a.oil
b.salt
c.alcohol
d.sand
Answer:
Salt will dissolve in water
Answer:
salt will dissolve
Explanation:
so if you put salt in water you notice the water changeing and its desloving just like how laxatives work like if you put powder in and stir and lay it down for couple mins it's clear and dissolved
I dont know this and noone asks it with the real answer soooo tell me pls?
Answer:
Explanation:
sus
Erwin Chargaff is considered one of the pioneering scientists in the field of molecular biology. In one of his studies, Chargaff observed that a sample of human DNA contained approximately 30% adenine (A). Based on DNA structure, what are the expected percentages of the other nitrogenous bases in the sample?
A.
10% thymine, 40% cytosine
B.
20% thymine, 30% cytosine
C.
30% thymine, 20% cytosine
D.
40% thymine, 10% cytosine#
Answer:
30% thymine, 20% cytosine
Explanation:
In a typical DNA double helix pyrimidine; Cytosine and thymine always pair with Purine ;Adenine and Guanine. This pairing ensure that the double helix of DNA is maintained by the presence of Hydrogen between these organic bases.
For correct pairing all adenine must pair with thymine,and all Cytosine with guanine.Therefore for this to occur if 30 % of adenine is present,the composition and number of thymine(30%) must be available.If this percentage is not available the pairing will not occur.
Like wise 20% Cytosine must be present because ,then same amount of Guanine molecule 20% in the DNA molecule. must be present Thus Guanine percentage is 20%.
This give a total of 100(60+40)
This based on the Erwin Chargaff stoichiometric ratio of 1:1 .This states that the percentage of adenine =thymine,and that of Guanine=Cytosine,in the DNA of living cells should be equal. Thus; [A]+[G]=[C]+[T]=1:1
eukaryotic cells differ from prokaryotic cells in that eukaryotic cells
Answer:
Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope. Eukaryotes belong to the domain Eukaryota or Eukarya; their name comes from the Greek εὖ and κάρυον. The domain Eukaryota makes up one of the domains of life in the three-domain system; the two other domains are Bacteria and Archaea. Eukaryotes represent a tiny minority of the number of living organisms; however, due to their generally much larger size, their collective worldwide biomass is estimated to be about equal to that of prokaryotes. Eukaryotes evolved approximately 1.6–2.1 billion years ago, during the Proterozoic eon.
Explanation:
Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.
HOPE IT WILL HELP U!!!!!
How might scientific knowledge about monoculture farming affect societal decisions? Please be sure to answer in complete sentences.
Answer:
People could choose to practice organic farming, heirloom plants, or use GMOs.
Governments could pass laws to limit the use of monoculture farming.
Governments could pass laws requiring people to use alternate farming methods
Explanation:
Answer:
People could choose to practice organic farming, heirloom plants, or use GMOs. Governments could pass laws to limit the use of monoculture farming.Governments could pass laws requiring people to use alternate farming methods
What is crop rotation?
A)growing different crops to deplete the soil
B)the process of growing different crops throughout the year
C)turning watermelons over during the growing season
Answer:
A) Growing different crops to deplete the soil
Collisions between molecules cause diffusion.
True or false
If false then what does cause diffusion
Answer:
True
Explanation:
The collisions between the particles cause them to spread out and move away from each other.
What process allows Na+ and K+ to move in and out of the cell simultaneously?
ANSWERS:
A.Simple Diffusion
B.Facilitated Diffusion
C.Active Transport
D.Osmosis
Answer:
The correct answer is: C. Active Transport.
Explanation:
Because Na+ and K+ are ions, which makes them charged molecules, they can only diffuse through the cell membrane when using specialized protein channels. This is called facilitated diffusion and is a form of passive transport because sodium and potassium move following their gradients, which are made of the difference in concentration between the inside of the cell and the outside of the cell. For example, potassium is highly concentrated inside the cell and poorly concentrated outside the cell, so potassium diffuses from the inside to the outside to even the concentrations.
But the question asks in which process Na+ and K+ move in and out of the cell SIMULTANEOUSLY, so the answer is actually active transport. Active transport is the opposite of passive transport. While passive transport occurs naturally and doesn't need ATP (energy) to happen, active transport needs ATP because it moves molecules AGAINST their gradient. One of the most famous and important structures involved in active transport is the Na+/K+ pump, which consists of a specialized protein using energy to enter 2 potassium ions and take out 3 sodium ions at the same time. This Na+/K+ is fundamental to maintain the gradients, which are important for the correct functioning of many cells.
what cell structure is responsible for translation?
Answer:
Ribosome
Explanation:
The entire process is called gene expression. In translation, messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell.
Answer:
Ribosomes
Explanation:
Organic molecules are sometimes found within meteorites that crash into Earth Which meteorite condition in space is similar to what most likely was present
Earth's early atmosphe
Abundance of oxygen
Very cold temperatures
Presence of inorganic molecules
Low levels of ultraviolet radiation
its presence of inorganic molecules- hope this helped, good luck!
Answer:
c
Explanation:
What could cause the carrying capacity of deer to increase ?
Answer:
Deer populations increase through births or when new animals move into the area (immigration). Deer populations decrease through deaths or when animals leave the area or disperse (emigration). Population change = (birth + immigration) - (death + emigration).
Explanation:
Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is
A.Diffsion
B.stable transport
C.Active transport
D.Osmosis
Answer:
osmosis
Explanation:
on edge2020
The movement of water from an area of high water concentration to an area of low water concentration is called as Osmosis. Thus option D is correct.
What is osmosis ?The process in which solvent molecules pass from a lower concentration based solution to a higher concentration solution through a semipermeable membrane called as osmosis.
It is a passive process as no external energy is needed.
When a living plant cell kept in a sugar or salt solution, water diffuses from the cell sap out through the cell membrane called as ex-osmosis.
The cell causes shrinkage of the protoplasm due to water loss, where the cell undergo a condition called as plasmolysis or necrosis.
When the plasmolysed cell is placed in distilled water, the cell regains it’s turgidity and also the original shape and size by a process called endosmosis.
This condition is called deplasmolysis or cytolysis. Thus option D is correct.
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Substance A has a mass of 5 g and a volume of 5 g/cmº. What is the Density?
If Brittany is investigating how fast Brian will react to three different sounds, the independent variable in the experiment is the time it takes Brian to react.
True or False
Answer:
False
Explanation:
The independent variables are the different sounds Brittany is making Brian react to.
Question 4 of 10 What do all cells have in common? O A. They are all bacteria. ООО B. They all contain DNA. C. They all have cell walls. D. They can only exist in pairs.
Would the construction of this master-planned community impact the carrying capacity of the state’s ecosystem?
Answer:
Are you against or with?
Explanation:
,.;1q23wt4y5eu6ri7ertyur
Which is the correct order of the levels of organization in plants and animals?
Answer:
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
Write for each one if it is quantitative or qualitative.
1. The first plant specimen had three more leaves than the second specimen.
2.The leaves on the first plant specimen appeared healthier.
3. The leaves on the first plant specimen were green, while the leaves on the second plant specimen were turning brown.
4. The flower face turned seventy degrees to follow the sunlight during the daytime.
5. The plants were observed over a period of ten days.
6. Each plant produced an average of four ounces of seeds.
7. The petals on the second plant were shriveled around the edges.
8. The first plant grew one inch taller than the second plant.
9. Each plant produced fragrant blossoms.
10. The second plant showed a decreased growth rate.
Answer:
Solution:
1. quantitative
2. qualitative
3.qualitative
4. quantitative
5. quantitative
6. quantitative
7. qualitative
8.quantitative
9. qualitative
10. qualitative
help me please asap??? :$
Answer:
A. To make more body cells. like skin cells or liver cells for example.
Where is carbon located on our planet, and how are these carbon reservoirs different from each other?
Answer: Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms. These are the reservoirs, or sinks, through which carbon cycles. The ocean is a giant carbon sink that absorbs carbon.
PLEASE ANSWER THESE QUESTIONS COMPLETELY!!! WILL MARK BRAINLIEST!!!
Questions:
A. Is the suspect guilty of the crime?
B. How do you know?
Answer:
A. No
B. because, the suspect doesn't add up to any of the DNA of the killer, victim, or the control, so no the suspect is definetly not guilty and is definetly not the killer. It just wouldn't add up right, none of the other's DNA matches to the suspect, leaving the suspect as not guilty but inisent and doesn't lead or match that suspect to in any way the killer. In other words the killer and suspect don't link in any way!
Explanation:
Hope I helped in any way that you were looking for in this answer! :)
Which cellular structure synthesizes proteins and is found in
both eukaryotes and prokaryotes?
Answer:
Ribosomes
Explanation:
Every cell needs robiosomes to form proteins.
describe one of the interactions between the four major earth systems
Answer:
Explanation: Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
The water cycle is one of the interactions that significantly occurs between all four major earth systems. These systems are also known as spheres.
What are the four major earth systems?The four major earth systems include the lithosphere which deals with the land, the hydrosphere which linked all sorts of water on the earth's surface, the atmosphere which is associated with the presence of air, and the biosphere where life exists and living organisms live in order to play their functional role.
According to the context of this question, each and every biogeochemical cycle like the water cycle, carbon cycle, etc. process with the successful interaction of all these earth systems.
This is because these cycles include all kinds of products that are derived directly or indirectly from these spheres. For example, the gaseous form of water is present in the atmosphere while its liquid state is present in biospheres.
Therefore, the water cycle is one of the interactions that significantly occurs between all four major earth systems.
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