The assertion that DNA is not found in the nucleus of all eukaryotic cells is incorrect. In fact, the nucleus of eukaryotic cells does contain DNA, which is essential for the cell's functioning and reproduction.
Explanation:The statement 'DNA is not found in the nucleus of all eukaryotic cells' is false. DNA, which stands for deoxyribonucleic acid, is indeed found in the nucleus of all eukaryotic cells. Eukaryotic cells, as opposed to prokaryotic cells, have a nucleus that contains their DNA. This DNA is responsible for the cell's genetic information and instructions for cell functioning and reproduction. This is a basic and universal characteristic of eukaryotic cells.
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what is true in a saturated solution A. No more solute can be dissolved B. No more solvent can be dissolved C. No more solution can be made D. The concentration cannot be decrease
What might happen in a community if farmers did not plant legume crops
Answer these questions
1. What are three examples of technology?
2. What is observation? Why is it important to scientists?
3. What role does critical thinking play in evaluating scientific evidence?
4. How is a scientific law different from a scientific theory?
5. How do you make an inference?
6. Contrast a hypothesis & a prediction.
7. Why are ethics particularly important in specific types of scientific investigation?
8. Define biology. Name 2 other branches of science.
Answer in complete sentences
What are tectonic plates and how do they work?
Plate tectonics is the study of movement of the Earth's plates, called tectonic plates. A tectonic plate is a huge, irregularly shaped slab of solid rock. They are commonly composed of continental and oceanic lithosphere. Weather, as well as others, cause tectonic plates to slide, this causes a slight shake, volcanoes or earthquakes.
Which of the following best describes an advantage of genetic engineering?
A. Can reduce long-term health problems among consumers of GMO
B. Increases regulation of sale and consumption of healthy food
C. Reduces harmful impact on natural ecosystem in the future
D. Can produce crops having high level of nutrition
Answer: D. Because crops produces a good level or nutrition giving it the advantage that genetic engineering has made.
plz comment below if this is correct hope i helped :)
Explanation:
The alteration of the natural gene sequence for better outcomes is called genetic engineering.
The tools which are used in genetic engineering is as follows:-
PlasmidDNA ligaseNucleaseVectorGenetic engineering is used to treat genetic diseases, help to make the plant free from diseases resistant and pest resistant. It also helps to increase the yield of the plant.
According to the question, the correct option is D that is Can produce crops having a high level of nutrition.
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How is over-irrigation damaging to soil? a. It reduces the amount of organic material in soil. b. It results in the accumulation of salt near the soil surface. c. It increases the acidity of soil. d. It removes water from the water table. Please select the best answer from the choices provided A B C D
it is B.
It results in the accumulation of salt near the soil surface. hope this helps
Over irrigation is a mistake made by farmers which results in the accumulation of salt near the soil surface. Therefore, option (B) is correct.
What is over-irrigation?Farmers frequently overirrigate their fields, especially when soil moisture monitoring equipment is not being used.
Regular irrigation with too much water raises the groundwater level and produces more solvent salts. Salts from saline groundwater evaporate and condense on the soil's surface. Additionally, irrigation water becomes more salted as a result of canal water seepage.
Your soil's aeration and salinity are both impacted by excessive irrigation. It implies that your plants' roots will lose important nitrogen and absorb more salt. Your plants' and flowers' growth may be hampered by the fact that most plants dislike growing in saline soil.
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Photosynthesis requries a supply of CO2 as well as H2O and sunlight. how do plants obtain these resources?
H2O is acquired by osmosis in the plants cells, and or through the stomata. CO2 is obtained in the way of the stomata.
What do you mean by osmosis?In biology, osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.
Moreover, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes).
Hence, osmosis is the transport of a solvent through a semipermeable membrane that separates two solutions of differing solute concentration. During osmosis, the solvent moves from the solution that is lower in solute concentration to the solution that is higher in solute concentration.
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Robin holds a handful of damp soil in her hand. She rubs some of the soil between her fingers. The soil feels very soft and a lot like flour. It is not sticky. Her soil is MOST LIKELY
Robin holds a handful of damp soil in her hand. She rubs some of the soil between her fingers. The soil feels very soft and a lot like flour. It is not sticky. Her soil is MOST LIKELY
A) clay
B) loam
C) sand
D) silt
the answer is ( D ) silt
Describe the different types of symmetry you can find in animals
Natural selection. Darwin hypothesized that there requisites for natural selection to occur and that there are definite steps to natural selection. Note the two models seen here. Both of the models illustrate an important requisite for natural selection. That is:
Answer:
In a population of bacteria, variations exist due to mutation. The bacteria are subjected to antibiotics. Some bacteria die; others survive and reproduce. Eventually, the bacteria a resistant to the antibiotics.
Explanation:
In order to make new nucleic acids, your body needs food that contains
Answer:
The correct answer will be- food containing nitrogen and phosphorus elements.
Explanation:
Nucleic acids are the macromolecules which are made up of monomer unit called nucleotides. The two nucleic acids are DNA and RNA present inside us.
Each nucleotide is made up of a five-carbon sugar, a phosphate group and four types of nitrogenous bases (adenine, guanine, cytosine and thymine). So the food should contain these elements mainly nitrogen and phosphorus to make nucleic acids.
The good source of food products which supply phosphorus is - Whole Grains, Chicken, Turkey, Pork, nuts and many more. The food products rich in purines and pyrimidines are sardines, mussels, crab, shrimp and many others.
Thus, food containing nitrogen and phosphorus elements is the correct answer.
Consider the following food chain: garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat. What happens to the other members of the food chain if the cat is removed?
If the cat is removed the population of birds will escalate and exceed the population of the snails that sustain them.
The food chain is a depiction of the feeding relationship that exists in an ecosystem. An ecosystem is a self-supporting unit in which materials and energy are exchanged.
The food chain is as follows;
garden plants --> snails ---> birds --->household cat. We can see that removal of the cat means that the population of birds will escalate beyond the available population of snails. This will lead to competition for food among the birds within the ecosystem. The population of snails will suddenly decrease due to increase in the number of their predators. The number of garden plants will also increase due to the decrease in snail population.
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Describe a method you would use to separate chicken soup into other forms of matter from which it’s made
your body's metabolism is regulated by _____.
The body's metabolism is regulated by the endocrine system, particularly through the hormones released by glands such as the pancreas and thyroid, and the pituitary gland.
Explanation:Your body's metabolism is primarily regulated by your endocrine system. The hormones released by glands in this system influence how your body uses and stores energy. Important ones include insulin from the pancreas, which helps cells absorb glucose and store it as energy, and thyroid hormones which influence the rate of your metabolism. Pituitary gland also plays a key role as it sends signals to other glands in the body about when to release their hormones. Remember, maintaining a balanced metabolism is essential for good health.
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Water seeps inside cracks in a boulder and freezes. Over time, the crack expands and the boulder cracks in half. What process caused this change in the rock?
Carolina Bays along with cypress and gum ponds are important inland wetlands that provide habitat for a wide range of plants and animals. Carolina Bays tend to have some peat development, which is a layer of partially decomposed plant matter. Several Georgia Bays have peat deposits over 14 feet deep, the end product of about 9,000 years of plant decomposition and periodically, these peat deposits catch fire and burn usually about every 25 years. This fire plays an important role in the maintenance of Carolina Bays. How? A) The fires keep the Carolina Bay habitat from becoming overgrown with vegetation.
B) The fires in the Carolina Bays help to dissipate dangerous chemicals dissolved in the groundwater.
C) The fires in the Carolina Bay areas drive out invasive animal species that out-compete native species.
D) The fires throughout the Carolina Bays help to keep the plant species consistent throughout the states.
What land form is created when glaciers erode backwards into the mountainside and form a shape like a shallow bowl?
It's called a Cirque, or Corrie
Hope that's right and helps
Answer: Cirque
Explanation: Cirques are bowl shaped, circular depression that are formed at the top region of the mountains, due to the melting and erosion of glaciers. It is an erosional feature.
Cirques are separated from one another by aretes, that are steep narrow long ridges found at the top part of the mountain. The walls of this cirques are very steep and their diameter ranges upto a size of 1 kilometer.
the Diagram shows two water molecules.
what does the the dotted line between the water molecules represent?
A. a polar bond
B. a covalent bond
C. a hydrogen bond
D. an eletronegative bond
The correct answer is option C. a hydrogen bond.
The water is a polar molecule, in which the oxygen has a slight negative charge and the hydrogen has a slight positive charge. The positive charge of the hydrogen from one molecule attracts the negatively charged oxygen atom of another water molecule. As a result, an inter molecule hydrogen bonding is formed. Hence, the dotted line represents a hydrogen bond.
URGENT PLEASE ANSWER
Why is it important that a pure water IV not be given to dehydrated patients?
What are the evolutionary advantages of organisms that can photosynthesize?
distinguish between the cell wall and the cell membrane in a plant cell
an area of forest that experiences very little change in species composition is a?
Which statement is true about oxygen and rocks?
Answer:
D. Oxygen is a pure substance and rocks are mixtures
Explanation:
I took the exam and got this right
In one to three sentences, describe what happens during the reduction stage of the Calvin cycle.
ATP and NADPH transfer chemical energy to 3-PGA.
Glyceraldehyde 3-phosphate (G3P) is created.
G3P is used to make sugar.
The reduction stage is the second stage of the Calvin cycle in which the molecules of 3-phosphoglyceraldehyde are produced through the process of carbon fixation. These molecules are then converted into the simple sugar molecules known as glucose.
What is the Calvin cycle?The Calvin cycle may be defined as a type of dark reaction of photosynthesis that is light-independent. It occurs in the chloroplast of the plant and converts carbon dioxide into glucose.
The reduction stage of the Calvin cycle initiates with the transfer of chemical energy from the ATP and NADPH to 3-phosphoglyceraldehyde.
Therefore, it is well described above.
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Angle where a leaf stall joins the stem
If a mineral leaves a red trail when scraped against an unglazed porcelain plate,which property of mineral is being measured?
The answer is color because it leaves a red trail
What is responsible for telling cells how to behave
Answer: Its DNA.
Explanation:
The genetic material of which all living beings are created recieves the name of DNA (deoxyribonucleic acid). It is present in living organism cells and it is the one that provides the instructions of what to do to the cell, it gives orders as of when a cell needs to grow, to do an specific function and how that cell would respond to its environment.
Taconite is a low-grade iron ore that is found around Lake Superior. The iron-bearing rock is found interlaced with quartz, chert and other minerals. The iron is separated out of the taconite using magnets so that it can be processed to for use in the production of steel in nearby states. What statement does not represent a concern by the Department of Natural Resources about the use of taconite as a source of iron.
A) The process to separate iron from taconite requires transportation by large vehicles over public roads.
B) The separation of taconite involves chemicals that may lead to air and water and pollution.
C) The area where taconite is mined is characterized by wetlands and streams.
D) Taconite is a non-renewable resource.
Answer:
Option (D)
Explanation:
Taconite is a silica-rich and low-grade ore of iron. This iron ore was initially considered to be a waste rock due to the abundance of higher-grade natural iron ore. But now, with the decreasing amount of natural iron ore, the use of taconite is increasing. They are extremely hard rock and the iron ore present in this rock is extracted by the use of magnetism. Due to the heavier weight, these rocks are needed to be transported from one place to another using very heavy vehicles.
These rocks are obtained by the smelting process in which carbon is used to heat the iron ore. This emission of carbon into the atmosphere can contribute to pollution.
These rocks are usually found in the streams and wetland areas. They are abundantly present on earth and not a non-renewable resource.
Hence, the most appropriate answer is option (D).
Can someone please help me quick!!!
A student compared some soccer players to the atoms in the liquid state. Which of the following activities were the soccer players most likely performing?
A-Lining up next to each other
B-Huddling around each other for the ball
C-Running randomly in all directions
D-Slowly jumping up and down in their places
Two states of matter are described below.
State A: Cannot be compressed and retains its shape
State B: Highly compressible
Which combination of the state and a substance in that state is correct?
A- State A = air; State B = neon
B-State A = water; State B = number cube
C-State A = water; State B = oxygen
D-State A = piece of metal; State B = air
If a chemical change has taken place, which of these is most likely true?
A-Original substance can be easily recovered.
B-Composition of a substance is the same.
C-A completely new substance is formed.
D-An easily reversible process has taken place.
Over a period of time a student observed a small tadpole changing into a frog. Which of the following explains the physical change that takes place in this growing frog?
A-The frog can change back into a tadpole.
B-The tadpole changes its shape and form.
C-The frog is made up of a different set of elements than the tadpole.
D-Many reactions take place inside the tadpole as it changes into a frog.
Which of these is an example of recombination of atoms to form newer molecules?
A-Molding a wire of gold
B-Hammering a piece of iron
C-Tarnishing of a silver coin
D-Rolling of a sheet of aluminum
Which process changes substances into new substances with new properties?
A-Chemical Change
B-Compressibility
C-Malleability
D-Physical Change
Judy kept 250 grams of juice in the freezer. What is most likely the mass of the frozen juice formed and why?
A-250 g, mass remains same during physical change of freezing
B-500 g, mass of ice is twice the mass of juice
C-250 g, mass is conserved when matter is destroyed to form ice
D-200 g, mass of frozen liquid is less than mass of the original liquid
Anna heated 15 g of Substance A to obtain 5 g of Substance B, 4 g of Substance C, and a certain amount of Substance D. Which statement is correct?
A-The mass of Substance D was 10 g less than the mass of Substance A.
B-The mass of Substance D was 1 g greater than the mass of Substance B.
C-The mass of Substance A was equal to the total mass of Substance C and Substance D.
D-The mass of Substance A was equal to the total mass of Substance B and Substance D.
The soccer players are most likely huddling around each other for the ball. Water is in State A and air is in State B. In a chemical change, a completely new substance is formed. The tadpole changes its shape and form as it becomes a frog. Molding a wire of gold is an example of recombination of atoms to form newer molecules. A chemical change changes substances into new substances with new properties. The mass of the frozen juice formed is most likely 250 g. The mass of Substance D is 6 g, which is 10 g less than the mass of Substance A.
Explanation:The soccer players are most likely huddling around each other for the ball, which is similar to how atoms in the liquid state move and interact with each other. In the liquid state, the atoms are free to move around and can cluster together in groups.
The correct combination of states and substances is State A = water and State B = air. Water cannot be compressed and retains its shape, while air is highly compressible.
When a chemical change takes place, a completely new substance is formed. Option C is most likely true. In a chemical change, the composition of the substance changes, resulting in the formation of new substances with different properties.
The physical change that takes place in a growing frog is that the tadpole changes its shape and form. Option B is correct. The physical change involves the development and transformation of the tadpole's body into that of a frog.
An example of recombination of atoms to form newer molecules is molding a wire of gold. The gold atoms are rearranged to form a new shape or structure. Option A is the correct answer.
The process that changes substances into new substances with new properties is a chemical change. Option A is the correct choice.
In this case, the mass of the frozen juice formed is most likely 250 g, as mass remains the same during the physical change of freezing. Option A is the correct answer.
In this scenario, the mass of Substance D is 6 g, which is 10 g less than the mass of Substance A. Option A is the correct statement.
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List two other facts you can learn from this graph.