Levers of the second and third classes both have their fulcrums at one end. Therefore, option (D) is correct.
A third class lever places the effort between the fulcrum and the load, while a second class lever places the load between the fulcrum and the effort. The benefit of having the load closer to the fulcrum, which results in an enhanced mechanical advantage, is what distinguishes second class levers.
This enables more force to be applied to the load with less effort. Third class levers, on the other hand, present a mechanical disadvantage in terms of force but have the advantage of a longer effort arm, permitting higher speed and range of motion.
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How much work must be done on a 1,000-kg car to increase its speed from 1 m/s to 2 m/s
Answer:
3 Joules
Explanation:
KE1 + W = KE2
[tex]\frac{1}{2}mv_{1}^{2} +W=\frac{1}{2}mv_{2}^{2}[/tex]
[tex]v_{1}^{2} +W=v_{2}^{2}[/tex]
[tex](1)^{2}+W=(2)^{2}\\1+W=4\\W=3\ Joules[/tex]
Answer: 1,500 J
Explanation: A-P-E-X
6. What key ingredient is the fern at the bottom of the rainforest missing in
order to capture energy?
o Water
o Sunlight
o Oxygen
o Carbon Dioxide
Answer:
sunlight
Explanation:
The sunlight is the key ingredient is the fern at the bottom of the rainforest missing in order to capture energy. Thus, option B is correct.
What is the use of sunlight?Sunlight is used in the process of photosynthesis by the plants to make glucose and six molecules of oxygen. During the process of photosynthesis plants capture sunlight with the help of chlorophyll pigments which are present in their leaves. The light energy trap by plant is used to change water and carbon dioxide into the form of sugar called as glucose.
This glucose is used by the plants as a energy to make cellulose and starch . Cellulose is used as the building material for cell wall and starch is stored in seeds and other parts of the plant as a food source which is used by heterotrophs as a food source.
Polysaccharides are made up of many monosaccharides the common types include starch, cellulose, glycogen, chitin and lignin. Starch is present as stored food in plant tissues and can be hydrolysed into monosaccharides to provide energy.
Therefore, The sunlight is the key ingredient is the fern at the bottom of the rainforest missing in order to capture energy. Thus, option B is correct.
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What is the function of the radula in gastropods?
O It is used like a nose to sense nearby food.
O It is used like a tongue to test the taste of food.
O It is used like teeth to scrape and tear food.
Answer:
It used like teeth to scrape and tear food
Explanation:
Hope this helps
Have a great day!
how can they carry capacity increased
Answer:
Explanation:
Since the recommendation of biology (or natural history, as it used to be called) in 1893 as part of the high school science curriculum, biology was considered a descriptive subject. In the late 1890s biology consisted of zoology, botany, and physiology. The group that decided on the high school science course configuration was the Committee of Ten. The committee was organized by the National Education Association (NEA) in 1892 to deal with the issue of uniform college entrance requirements. This essay argues that the decision of the Committee of Ten to place biology before chemistry and physics needs to be reexamined. The committee's recommendations are still being implemented over a hundred years later, and the issue of high school science course sequence is currently being debated.
Answer:
The correct answer is humans have increased the world's carrying capacity through migration, agriculture, medical advances, and communication. The age structure of a population allows us to predict population growth.
Explanation:
If I am right can I have brainlest, please?
The ages of four different horse fossils are shown in the table below. Use the information to
answer question.
If all of the fossils in the table above were located in different layers of rock, dating the
fossils by relative dating would place the fossil Mesohippus in which layer relative to the other
fossils?
Answer:
I think is second layer from the top
Explanation:
Taxol is a drug that comes from the bark of a tree that binds and irreversibly stabilizes microtubules. It is often used during chemotherapy to kill dividing cancer cells. How does taxol block cell division
Taxol is a drug that comes from the bark of a tree that binds and irreversibly stabilizes microtubules. It is often used during chemotherapy to kill dividing cancer cells. How does taxol block cell division?
A-
Taxol prevents the contractile ring from forming and dividing the cell in two.
B-
Taxol prevents DNA replication.
C-
Taxol prevents chromosome condensation during prophase.
D-
Taxol prevents spindle formation and separation of chromatids.
Answer: D-
Taxol prevents spindle formation and separation of chromatids.
Explanation:
The Taxol is used as an anticancer drug formulation. It is obtained from yew tree. An anticancer drug affects the cell cycle machinery so as to limit the production of cancer cells. This drug ceases the microtube formation in animal cells. This prevents the spindle fiber formation and further prevents the mitosis of cancerous cancers as the chromosomes will not separate apart and so abnormal cells will not produce further.
May someone please help me on this ?
Answer:
C- active B- diffusion A- facilitated
Explanation:
Why should conservation in land use and ecological restoration be done taking into account the soil-landscape relationship?
Answer:
Passive Ecological Restoration
Explanation:
HELP It is possible for two people to produce children that vary significantly in appearance. For example, a brother and sister can vary in height, hair color, eye color, etc. Describe the two meiotic processes that allow this to occur.
Answer:
yes it's possible
Explanation:
yep sure can
what is simple fruit?
why is critical thinking very important to media literay?
Answer:
Ceitical thinking is more important because it enhances language and presentation skills.
Thinking clearly and systematically can improve the way we express our ideas. In learning how to analyse the logical structure of texts, critical thinking also improves comprehension abilities.
Critical thinking itself has frequently been seen as an activity that, in some sense, must necessarily involve dissent.
What is critical thinking?As a guide to belief and behavior, critical thinking is the intellectually disciplined process of deliberately and skillfully conceiving, applying, analyzing, synthesizing, and/or evaluating knowledge obtained through, or generated by, observation, experience, reflection, reasoning, or communication.
Critical thinking will help you articulate your views, ideas, and opinions more clearly. Better communication allows others to better understand you, which reduces irritation for both of you. Critical thinking encourages creativity and unconventional thinking, which may be used to any aspect of your life.
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plz help meeeeeeeeee
Answer:single replacemt
Explanation:
MARKING BRAINLIEST HELPPPP
Answer:
1.CO2 comes from the composition of air. water from the soil and light from sun.
2.energy is absorbed in form of light - endothermic
3. glucose + oxygen
4. the chemical equation is balanced on both sides
Cells spend most of their time:
growing
dividing
doing both equally
Answer:
Dividing
Explanation:
True or false the great ocean conveyor belt will eventually move water all the way around the world
Answer:
I think false sorry if I'm wrong
Explanation:
What's a unique property of retroviruses that makes them highly adaptive and potentially
very devastating?
A.Retroviruses were discovered in the 1970s.
B.Retroviruses use RNA as their genetic material
C.Retroviruses can't replicate.
D.Retroviruses are viruses that travel backward in the cell.
Answer:
B. Retroviruses use RNA as their genetic material. Correct
Explanation:
Penn Foster
Retroviruses use RNA, not DNA, as their genetic material; this way, the retrovirus can integrate its DNA into the DNA of the host cell so the retrovirus can continue to replicate.
Answer:
Retroviruses use RNA as their genetic material.
Explanation:
Retroviruses use RNA, not DNA, as their genetic material; this way, the retrovirus can integrate its DNA into the DNA of the host cell so the retrovirus can continue to replicate.
What is the name of the group of enzymes that become very active during the LAG phase of growth?
Phytases
Proteases
Permeases
Papain
The lactose permease is a reliable transporter for switching from passive to active transport. Thus, option C is correct.
What enzymes that very active during the lag phase?The cells manufacture the minute molecules needed for replication using the medium. At this point, the cells begin to enlarge in size, though not necessarily in number.
Metabolic activity but not growth are typically characteristics of this first phase of cell growth.
The MFS includes the E. coli lactose permease (lacY, a structural gene in the lac operon). Contrary to GLUT1, another MFS member, the lactose permease participates in active transport.
Lactose is transported into cells by the lacY gene product, lactose permease, while the lacA gene product, lactose acetylase, performs an unidentified and typically optional function.
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Ecosystems include which of the following components that community do not
Answer:
Non-living components
Explanation:
Ecosystems include non-living components which are not present in the community.
An ecosystem is made up of communities including living and non - living components.
A community is made up of only the living components. Ecosystem encompasses both biotic and abiotic factors. An ecosystem is a larger domain compared to a community.CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answer:
b-high growth rates
Explanation:
Tim
Spherical protozoans (single-celled organisms), are generally much smaller than irregularly-shaped
protozoans, because,
Explanation:
due due to their size they are small and single celled....!!
12) On the diagram below:
Outside of cell
A
B
1-6
С
-H
1-G
D
-F
Inside of cell
Label the structures:
A:
B:
H:
Explanation:
A . Carbohydrate chainB .C.Protien D . cholesterolE . phospholipidf.G . hydrophilic head of phospholipidh . hydrophobic tail of phospholipidTo see how many atoms are in the chemical formula or element symbol, look at the subscript.
Example: Hz
There are two Hydrogens.
H2O
There is one Oxygen. No subscript means one.
Directions: Find the number of atoms in each chemical formula.
1. NaCl (sodium chloride or table salt)
Na-
CI-
2. CO2 (carbon dioxide)
C-
0-
3. O2 (oxygen)
0-
4. CoH1206 (glucose)
C-
H-
0-
To see how many atoms are in the chemical formula or element symbol, look at the subscript.
When there's a COEFFICIENT, multiply the coefficient by each subscript.
Example: 2H2O1
20102
Directions: Find the number of atoms in each chemical formula.
5. 2NaCl (sodium chloride or table salt)
Na
CH-
6.3C02 (carbon dioxide)
C.
0-
7.402 (oxygen)
0-
8. 2C6H12O6 (glucose)
c
H-
0-
Explanation:
To find the number of atoms in each specie, we consider the coefficient and the subscript of each of the given atoms.
1. NaCl:
Na = 1 atom
Cl = 1 atom
2. CO₂
C = 1 atom
O = 2 atom
3. O₂
O = 2 atoms
4. C₆H₁₂O₆
C = 6 atoms
H = 12 atoms
O = 6 atoms
For the second part;
1. 2NaCl
Na = 2 atoms
Cl = 2 atoms
2. 3CO₂
C = 3 atoms
O = 6 atoms
3. 4O₂
O = 8 atoms
4. 2C₆H₁₂O₆
C = 12 atoms
H = 24 atoms
O = 12 atoms
Which statement best descibes a cause and effects that occurs during the process of muscle contration?
Evolution happens when?
A: Over a very short amount of time
B: For individuals only
C: when the environment is perfectly suited for the organism
D: over a long period of time in response to natural pressures on organisms
Answer:
D
Explanation:
It is basically a species changing itself to adapt to its environment
Why do cells go through the cell cycle there are 2 reasons
Answer:
The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle.
Explanation:
There are 2 reasons for cells going through the cell cycle and those are cells must divide repeatedly for an embryo to develop or for you to grow, cells also divide in order to replace damaged or worn-out cells.
What is a cell?
"A cell is defined as the smallest unit of an organism with a nucleus. An example of a cell is a unit in the tissue of an animal muscle."
What are the types of cells?
There are various types of cells and they are:
Nerve cells.Muscle cells.Epithelial cells.Blood cells.Stem cells.Fat cells.What is a cell cycle?
"The process a cell goes through each time it divides. The cell cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies. The cell then divides into two daughter cells, each receiving one copy of the doubled material."
What are the main stages of cell cycle?
"The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions."
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Which statement describes an interaction between the biosphere and the atmosphere that is related to
photosynthesis?
A.During photosynthesis, plant roots take in water from soil.
B.During photosynthesis, plants take in carbon dioxide from the air.
C.Through photosynthesis, energy stored in plants is released into the air.
D.Through photosynthesis, energy stored in plants is transferred to humans who eat them.
Answer:
B.During photosynthesis, plants take in carbon dioxide from the air.
Explanation:
A.During photosynthesis, plant roots take in water from soil. - water is part of the hydrosphere, not the atmosphere.
B.During photosynthesis, plants take in carbon dioxide from the air. - this is true, the plant - a living thing and part of the biosphere - takes carbon dioxide from the atmosphere to use during photosynthesis.
C.Through photosynthesis, energy stored in plants is released into the air. - this is false, plants release oxygen into the atmosphere as part of photosynthesis , which synthesises glucose. It does not release energy.
D.Through photosynthesis, energy stored in plants is transferred to humans who eat them. - this is true, but does not involve the atmosphere (air in the environment)
Once a month, Esteban helps his sister with a newspaper route. He gets paid $20 for his work. After his first day helping, he wanted to buy himself a baseball video game. Instead, he bought his sister a gift for her birthday. Read the scenario and use the drop-down menus to answer the questions that follow. What is the opportunity cost of Esteban’s decision? What resource prevented Esteban from getting both a video game and a gift?
Answer:
Its c
Explanation:
Its correct because i big brain Ф⊥Ф
Answer:
What is the opportunity cost of Esteban’s decision?
✔ video game
What resource prevented Esteban from getting both a video game and a gift?
✔ money
Explanation:
hope this helped
In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are
expected from a cross between two heterozygous shorthaired rabbits?
Answer:
Genotype Phenotype
SS 1/4 Short hair 3/4
Ss 2/4 Short hair 3/4
ss 1/4 Long hair 1/4
Explanation:
The resulting off-spring would have the following genotype and phenotype:
1 out of 4 will have a genotype of SS.
2 out of 4 or half will have a genotype of Ss.
1 out of 4 will have a genotype of ss.
But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:
Short hair: 1/4 + 2/4 = 3/4
Long hair: 1/4
Help pls, I rlly need it?
Answer:
maybe a 3-D model or a 2-D
3. a) What components of DNA are of particular use in gel electrophoresis, and why? (2 points)
Answer:
DNA molecular weight standard controls, also known as DNA ladders
Explanation:
A DNA ladder is a molecular-weight size marker used to identify the size of the PCR products in a gel electrophoresis. The DNA ladder consists of a solution containing double-stranded DNA fragments with different molecular weights including, among others, 50 base pairs (bp), 100 bp, 1000 bp and 3000 bp DNA fragments. The concentration of each DNA fragment in the DNA ladder must be sufficiently high to be visualized on the electrophoresis gel.
