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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what is the function of the a transport protein?
Answer:
Transport proteins act as doors to the cell, helping certain molecules pass back and forth across the plasma membrane, which surrounds every living cell. In passive transport molecules move from an area of high concentration to an area of low concentration.
Explanation:
Viruses can be classified according to which genetic material, ____________ or ______________, makes up the viral core.
Answer:
RNA, DNA
Explanation:
-Completed sentence:
Viruses can be classified according to which genetic material RNA or DNA, makes up the viral core.
Do different color leaves use white light differently for photosynthesis?
Answer:
Answer 4: Plants do respond differently to different colors of light being shone on them, because chlorophyll reflects green light and absorbs blue and red (therefore, blue and red are useful for photosynthesis, but green isn't).
Answer:
In the explanation. :)
Explanation:
Plants do respond differently to different colors of light being shone on them, because chlorophyll reflects green light and absorbs blue and red meaning therefore, blue and red are useful for photosynthesis, but green isn't.)
Hope this helps. Have a great day!
Bruh please help. Picture is above
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
Genetic variations is an advantage to a population because it allows them to adapt to their environment.
Example: The arctic fox has brown fur in the summer but in the winter it grows in white fur. That's because it needs to blend in with its surroundings.
How can the production of certain proteins be prevented inside cells?
The difference between osmosis and active transport is that-
Osmosis is the diffusion of water across a membrane, where the water at a higher concentration naturally moves to the side of the membrane that has a lower concentration to even it out. Active transports move any ions or molecules, not just water, and require energy to move in and out of a membrane.
Hope this helps! Feel free to simple it down in your answer :)
What type of cells are found in the skeletal system?
Answer:
The human skeleton is composed mainly of a substance called bone, and there are primarily four types of cells that make up bone. These are the osteoprogenitor cells, osteoblasts, osteoclasts and osteocytes. Their names all start with the prefix “osteo,“ which is the Greek word for "bone."
Explanation:
Rocks, as they are compressed, begin forming mountains above the Earth's surface when two continental plates converge. The continental crust increases in depth as the mountains grow above. The Himalayan Mountains formed at a convergent plate boundary in this manner. The rocks are smashed together causing them to __________ due to the intense heat and pressure from the colliding plates and eventually forming _____________ rock.
Answer:
recrystallize
metamorphic
Explanation:
Rock can simply be defined as that which is formed from the remainis of plant and animals which has undergone decay. It is said to be nature solid mixture of one or more minerals or organic matter.
metamorphic rock is one of th types of rock. It occurs or forms from an other already existing rock that is acted upon and change occurs to it as a rest of heat, pressure, or chemical reaction.The Himalayan Mountains is located in the asian.
Cells contain special ____
Answer:
organelles
Explanation:
Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Did John Dalton use an observational study, a controlled experiment, or a mathematical model?
Answer:
we need a picture! if you provide one, then i can help in comments
Explanation:
What does it mean to classify things?
Answer:
to clasify is to create a group that pertains to a group with the same characteristics
Explanation:
What is one human body system we can live without?
Answer: brain
Explanation: You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.
Which of these lists shows ONLY prime numbers?
OA
3, 9, 7, 11, 13
OB. 2, 8, 19, 13,7
OC.
7, 2, 3, 19, 13
OD
12, 13, 17, 11
Answer:
OC is the right answer.
Explanation:
Exercise
1. Which of the following statements about genetic engineering is not true?
A It is used to change an organism and give it new characteristies that people want.
B It inroles changing the genetic material of an organism.
C It can be used to produce crops that are resistant to disease.
D It does not allor genes to be transferred from one type of organism to another.
Answer:
d I guess.............
The following statements about genetic engineering is not true it does not allor genes to be transferred from one type of organism to another.
What is genetic engineering examples?Genetic engineering is one of the main pillars of biotechnology, which consists of a set of techniques for manipulating DNA through its recombination, with the objective of manufacturing improved organisms, aiming at the improvement or genetic structuring of a certain species, whether plant or animal.
Thus, the only alternative that does not represent genetic engineering is
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The process of glycolysis is represented by letter ___ and takes place in the ____.
A) A, mitochondrion.
B) A, cytoplasm.
C) C, mitochondrion.
D) C, cytoplasm.
A man is 1.7 m long. An amoeba is 17 um long. How does the length of the
man compare to the length of the amoeba?
. the negatively charged part of an atom
Answer:
Electrons are the negatively charged particles of an atom. Together, all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus. Electrons are extremely small compared to all of the other parts of the atom. The mass of an electron is almost 1,000 times smaller than the mass of a proton.
Explanation:
I hope this helped!
An important polysaccharide is missing from the chart. It is made by animals as their storage polysaccharide, and is found mainly in muscle and liver and called
Answer:
The answer is D ) Glycogen
Please anybody! I been struggling for a while now :(
Answer:
excess nitrates cause algae blooms
Explanation:
how does carbon from the carbon cycle leave the ecosystem?
why must meosis and not mitosis be used to produce gametes
answer and explain
20 POINTS!!!!
Answer:
Explanation:
Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes (sperm and eggs).
Answer:
ten points each does not mean 20 points each
Explanation:
5. What is another possible analogy that could be compared with the structure and function of a cell?
Answer:
hope it helps you❤❤❤
Explanation:
The structure and function of an airport and control tower are compared to the structure and function of a cell.
Study Finds Aardvarks Suffering as African Climate Heats Up
Little is known about Africa's elusive aardvarks, but new research says they are vulnerable to climate change like many other species.
Hotter temperatures are taking their toll on the aardvark, whose diet of ants and termites is becoming scarcer in some areas because of reduced rainfall.
Drought in the Kalahari Desert killed five out of six aardvarks that were being monitored for a year, as well as 11 others in the area.
The aardvarks' body temperatures plummeted during the night because they were not getting enough energy from diminished food sources. They tried to conserve energy by looking for insects
during the warmer daytime, but their efforts to adapt could not save them
Researchers said some birds, reptiles and other animals use aardvark burrows to escape extreme temperatures, reproduce, and hide from predators. They could have fewer refuges available ir
aardvark populations shrink because of rising temperatures, they said.
The aardvark, which lives in many parts of sub-Saharan Africa, is identified as an animal of "least concern on an international "red list of threatened species. There are no indications that the
population is changing significantly in southern Africa, though it is speculated that numbers may be declining elsewhere because of habitat destruction, the bushmeat trade and other factors.
Study Finds aardvarks suffering as African climate heats up. Christopher Torchia, Phys.org, July 31, 2017
Which of the following best identifies the author's claim?
The option that identifies the author's claim is B. Aardvarks are a keystone species and their decline could have a trophic cascade effect on the ecosystem.
The claim of an author simply refers to what the author is trying to point out. Here, the claim of the author is that aardvarks are a keystone species and their decline could have a trophic cascade effect on the ecosystem.
The author stated that aardvarks are vulnerable to climate change like many other species and this could lead to their reduction. Some birds, reptiles and other animals use aardvark burrows to escape extreme temperatures, reproduce, and hide from predators. Therefore, the reduction of aardvarks will have a negative effect on the population of such animals.
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They are a keystone species, aardvarks' extinction might cause an ecosystem-wide cascade of trophic levels. The correct option is B.
Thus, An author's claim simply refers to what the author is attempting to make a point about. Aardvarks are a keystone species, according to the author, and their extinction could have a negative trophic cascade effect on the environment.
According to the author, aardvarks, like many other species, are susceptible to climate change, which could result in a decline in their population.
Aardvark burrows are used by some birds, reptiles, and other creatures as a refuge from harsh weather, a place to mate, and a place to hide from raptors. Aardvark populations will therefore be negatively impacted by the decline in aardvarks.
Thus, They are a keystone species, aardvarks' extinction might cause an ecosystem-wide cascade of trophic levels. The correct option is B.
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The light-dependent reactions of photosynthesis do not include:
A.) chemiosmosis
B.) carbon fixation
C.) transformation of light to chemical energy
D.) electron transport
Answer:
electron transport
Explanation:
Mutations are important because they bring about
A) death if the organism in which they develop
B) genetic variation needed for a population to evolve
C) benefits for the individual, not for the population
D) hardey-weinberg equilibrium within a population
Answer:
B) genetic variation needed for a population to evolve
Explanation:
Mutations are important because they bring about the genetic variation needed for a population to evolve.
Mutation brings about changes in the DNA sequence of an organism. Most times, mutation results when an organism tries to adapt and evolve to unfavorable conditions. Mutation can originate from mistakes in DNA sequencing. It can also be due to environmental influences.Fill in the blank lines in the diagram above to label the two types of connective tissue
shown, then describe the function of each below.
Answer:
ligaments connect one bone to each other while tendon connect muscle to bone
Answer:
The first line that connects bone to the biceps, which is a muscle, is a tendon since the tendon connects bone to muscle while the other line down there connects bone to bone which means it is a ligament.
Explanation:
1. In cabbage butterflies, White wings are dominant to yellow wings. If a Ww butterfly is crossed with a ww butterfly, what are the possible genotypes and phenotypes of the offspring and the percent chance for each?
Answer:
Ww, Ww, ww, ww, or two white-winged butterflies and two yellow-winged butterflies
Explanation:
Using the Punnett square, we can determine the possibility of white-winged and yellow-winged offsprings.
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:
1.
Body temperature regulation is a problem in premature
infants because the (1) is not yet fully functional. Cerebral
palsy involves crippling neuromuscular problems. It usually is
a result of a lack of (2)_ to the infant's brain during deliv-
ery. Normal maturation of the nervous system occurs in a
(3) _direction, and fine control occurs much later than (4)
muscle control. The sympathetic nervous system becomes less
efficient as aging occurs, resulting in an inability to prevent
sudden changes in (5) when abrupt changes in position
are made. The usual cause of decreasing efficiency of the ner-
vous system as a whole is A change in intellect due to
a gradual decrease in oxygen delivery to brain cells is called
(7) Death of brain neurons, which results from a sudden
cessation of oxygen delivery. is called a (8)
1.) How can you tell by using Benedict's and iodine solution if a sugar is a:
a. Monosaccharide:
b. Disaccharide:
C. Polysaccharide:
Answer: (A) Monosaccharide
Explanation: You can tell if a sugar is a monosaccharide because it will have certain chemical changes with Benedict’s.