Where do Earth’s convection currents occur?
A the lithosphere
B tectonic plates
C the asthenosphere
D the subduction zone
Answer:
B
Explanation:
B
Describe the structure and function of the cell membrane.
Answer:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Explanation:
Type the correct answer in the box. Spell all words correctly.
What is Teddy's organization trying to accomplish?
Teddy is working for a nonprofit organization that urges people to stop using products with CFCs. Through this Initiative, Teddy's organization
hopes to reduce the concentration of
in the atmosphere.
Answer:
Greenhouse gases
Explanation:
Teddy is working for a nonprofit organization that urges people to stop using products with CFCs. Through this Initiative, Teddy's organization hopes to reduce the concentration of greenhouse gases in the atmosphere.
Greenhouse gases deplete the ozone layer thereby causing global warming as a result often increase in the intensity of Sun rays reaching the earth.
Example of greenhouse gases include chlorofluorocarbon, nitrogen, water vapor etc
food contains several components called as?
Answer:
These components are called nutrients. The major nutrients in our food are named carbohydrates, proteins, fats, vitamins and minerals. In addition, food contains dietary fibers and water which are also needed by our body.
Explanation:
Which property of water allows water to be conducted up to the leaves?
Answer:
Cohesive nature of water
Explanation:
Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves.
Answer: B
Explanation:
Another students says that the earth’s magnetic poles have flipped many times in the past. How would you evaluate their statement?
Question 18 options:
This is a true statement.
This false because the magnetic field is fixed and cannot change.
This is false because a compass always points at the true North Pole.
This is false because the magnetic field has only flipped once.
Answer:
True
Explanation:
As a matter of geological record, the Earth's magnetic field has undergone numerous reversals of polarity. We can see this in the magnetic patterns found in volcanic rocks, especially those recovered from the ocean floors. In the last 10 million years, there have been, on average, 4 or 5 reversals per million years.
Which of the following is true concerning pastoralism?
a.
It occurs in small areas of land with high yields.
b.
It occurs in forests and grasslands.
c.
It is a modern agricultural technique.
d.
It revolves around herding livestock.
Please select the best answer from the choices provided
A
B
C
D
Answer:
D
Explanation:
Answer:
It revolves around herding of livestock
Aphids are tiny insects that feed on plants. Ladybugs are helpful to plants because they eat aphids.
Which type of organism are aphids in this scenario?
decomposers
predators
prey
producers
Answer:
Prey
Explanation:
The aphids are the prey of the ladybug.
Answer:
c
Explanation:
In addition to liquid precipitation, which are present when freezing rain occurs. Choose one.
- Warm temperatures
- Cold surfaces
- Ice pellets
- Snowflakes
Answer:
Warm Temperature
Explanation:
Answer:
i think its A sorry if im wrong
Explanation:
What stage of respiration immediately follows the process depicted below? (2 points)
A)Electron transport chain
B) Glycolysis
C) fermentation
D)krebs cycle
Image Attached
Answer:
D) Krebs' cycle
Explanation:
The stage of respiration shown is pyruvate oxidation. This is the intermediate stage between the first and second stages of aerobic respiration.
The first stage is glycolysis, which is the breakdown of glucose into two molecules of pyruvate. After pyruvate oxidation, the next stage is the Krebs cycle. The Krebs cycle is a series of reactions that release energy through oxidation of acetyl-CoA.
To increase efficiency of cell processes, cells have adapted to do which two things?
Answer:
divide and develop organelles
Explanation:
Is squash a annual, biennial, or perennial?
Answer:
They are annual
Explanation:
They grow in the warmer months every year.
Identify the organelles in the cell to the right
Answer: A-Vacoule
B-Chloroplast
C-cell membrane
D-Golgi apparatus
E-Endoplasmic reticulum
F-Cell wall
Explanation:
Answer:
dentify the organelles in the cell to the right.
A
✔ vacuole
B
✔ chloroplast
C
✔ cell membrane
D
✔ Golgi apparatus
E
✔ endoplasmic reticulum
F
✔ cell wall
The organelles in a plant cell are labeled. Part A is a large hollow structure at the center of the cell. Part B is a leaf-shaped structure. Part C is the lining of the cell. Part D is made up of stacked circles. Part E is a network of membranous tubules. Part F is the outside of the cell.
Explanation:
You get 20 points
Plss help me it’s urgent
Answer: Somatic stem cells are capable of self-renewal, not differentiation
Embryonic stem cells are capable of self-renewal and differentiation
Amniotic fluid stem cells are capable of self-renewal and limited differentiation
Explanation:
During cell respiration, the reactants of glucose and oxygen are transformed into the products of carbon dioxide, water, and ATP. Which of the following cell transport processes would be relatively unaffected if a cell no longer had access to glucose? Choose 1 answer: Choose 1 answer: (Choice A) A The transport of calcium into a muscle cell via facilitated diffusion. (Choice B) B The transport of an amino acid into an intestinal cell from an area of low concentration to an area of high concentration gradient. (Choice C) C The transport of sodium against its concentration gradient in a brain cell. (Choice D) D The passive transport of a charged potassium ion (K^+ + start superscript, plus, end superscript) through a cell membrane.
The process of cell transport that would be relatively unaffected if a cell no longer had access to glucose is the transport of calcium into a muscle cell via facilitated diffusion. Thus, the correct option is A.
What is Cellular respiration?Cellular respiration may be defined as the chemical process through which the breaking down of food occurs with the liberation of energy. This process takes place in the excess of oxygen and constructs energy from carbohydrates (sugars).
The excess glucose delivers the required energy for the cell to perform its metabolic activities. But when the amount of glucose is not significantly present in the cell, the process of transport of calcium into a muscle cell via facilitated diffusion remains unaffected.
This is because the transport of calcium occurs due to paracellular passive transport without the utilization of energy. While the rest of the process requires energy for the transport.
And due to a lack of glucose, cells do not have the ability to derive energy in form of ATP.
Therefore, the process of cell transport that would be relatively unaffected if a cell no longer had access to glucose is the transport of calcium into a muscle cell via facilitated diffusion. Thus, the correct option is A.
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Tropical rain forests tend to have soils that are nutrient poor, and most of the nutrients are found in the top few inches of the soil.
Which adaptation is most likely found in tropical trees?
A. deep root systems
B. shallow root systems
C. needles
D. pine cones
Answer:
B. shallow root systems
Explanation:
Brainliest Please
what is the antonym of misuse
Answer:
To Cherish or Save something or to Care for something or benefit
Explanation:
Answer:
Use is the answer.
I hope it helps
Thank U
FAST PLEASE!!!!!!!! IM BEING TIMED HELP!!!!!! BRAINLYEST
Caused by differences in the density of ocean water; flows slowly.
Gulf Stream
deep current
surface current
Answer:
it is either B or C but probably C
Which chemical bond most likely stores the most energy?
O A. C-C
B. H-O
O C. CNC
O D. H-H
Why would a plant cell not burst while an animal cell would undergo cytolysis in a hypotonic solution?
The plant cell has a large central vacuole and creates a stronger exterior.
The plant cell has a rigid cell wall and the pressure from the central vacuoles causes the stiffness of the plant and animal cells do not have a cell wall therefore the boundary of the cell is weaker.
The plant cell is stronger because it has the chloroplast and causes a strong boundary that support the cell due to the glucose that is made from the process of photosynthesis.
Explanation:
The plant cell has a large central vacuole and creates a stronger exterior.
The plant cell has a rigid cell wall and the pressure from the central vacuoles causes the stiffness of the plant and animal cells do not have a cell wall therefore the boundary of the cell is weaker.
The plant cell is stronger because it has the chloroplast and causes a strong boundary that support the cell due to the glucose that is made from the process of photosynthesis.
What cellular process is occurring in the organelle labeled A?
(5 Points)
Students constructed a diagram to represent two related cellular processes.
F. Photosynthesis
G. Cellular respiration
H. DNA replication
J. Protein synthesis
Answer:
F. Photosynthesis
Explanation:
The organelle pictured (a chloroplast) seems to be absorbing energy from the sunlight and that is included in the process of photosynthesis.
The carbohydrates (glucose) are formed by the process of photosynthesis in the chloroplast of the cell which then sent to the mitochondria for the production of ATP through glycolysis. Thus, the correct option is F.
What is Photosynthesis?
Photosynthesis is the process of conversion of light energy (sunlight) into chemical energy (glucose). This process takes place in the chloroplast of plant cell where chlorophyll is present, this pigment (chlorophyll) is responsible for trapping the sunlight which is responsible for conduction of photosynthesis.
The products of photosynthesis (glucose) is sent to the mitochondria of cell for the production of ATP by the process of glycolysis. This ATP is then utilized by the cell in other cellular mechanisms.
Therefore, the correct option is F.
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In the atmosphere, 50% of the air lies below an altitude of
Answer:
it is 89.0000655
Explanation:
bn hn hhhbnhh h kjjhjn nh
In the atmosphere, 50% of the air lies below an altitude of 89.0000655.
What do you mean by altitude of atmosphere?Exosphere. Located between about 700 and 10,000 kilometers (440 and 6,200 miles) above Earth's surface, the exosphere is the highest layer of Earth's atmosphere and, at its top, merges with the solar wind.
The commonly accepted end of earth's atmosphere falls within the thermosphere at 62 miles (100 kilometers) above the earth's surface. This commonly accepted boundary is called the Kármán Line.
The Stratosphere extends around 31 miles (50 km) down to anywhere from 4 to 12 miles (6 to 20 km) above the Earth's surface. This layer holds 19 percent of the atmosphere's gases but very little water vapor.
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Sucrose is made of which simple sugars?
glucose and fructose
fructose and galactose
galactose and cellulose
cellulose and glucose
Answer:
it is made of
glucose and fructose.
Sucrose is made up of simple sugars glucose and fructose. Thus, the correct option is A.
What are Simple sugars?Simple sugars may be defined as carbohydrates in their most basic form. Such types of carbohydrates contain only one to two sugar molecules and are digested quickly.
Monosaccharides and disaccharides are examples of simple sugars. Examples of simple sugars are glucose, fructose, and galactose.
Therefore, Sucrose is made up of simple sugars glucose and fructose. Thus, the correct option is A.
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a)shrink
b)swell
c)neither
Select all of the following that are a result of heating up a solution?
Molecules will move faster
Molecules will slow down
Molecular movement will not change
More collisions will occur between molecules
Answer:
a
Explanation:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
The results of heating up a solution are:
Molecules will move faster
More collisions will occur between molecules
According to the kinetic molecular theory, when a solution is heated up:
The temperature of the solution risesThe attractive forces binding the molecules weakensThe speed of the molecules increases. This means that the molecules move faster than before The rate of collision between the molecules increases. This is because of an increase in the Kinetic Energy possessed by the molecules as the temperature risesTherefore, among the given options, the results of heating up a solution are:
Molecules will move faster
More collisions will occur between molecules
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1 point
Which of the following describes the most likely location of cholesterol in
an animal cell?
*
Embedded in the plasma membrane
Dissolved in the cytosol
Suspended in the stroma of the chloroplast
Bound to free ribosomes
Based on the diagram, what is the site of modification and packaging of
proteins and lipids prior to export from the cell?
Answer:
1. Embedded in the plasma membrane
2. There is no diagram attached but the question can be answered based on general knowledge. The answer is Golgi apparatus/body.
Explanation:
1. Cholesterol is fat molecule produced in the Smooth Endoplasmic reticulum of animal cells. It is then transported to the plasma membrane, where it plays a vital role in the functionality of the plasma membrane. Hence, embedded in the plasma membrane of an animal cell is CHOLESTEROL, in addition to phospholipids.
2. The Golgi apparatus is an organelle in eukaryotic cells that functions in the modification and packaging of protein and lipid molecules produced by the RER and SER respectively.
The most likely location of cholesterol in an animal cell is A. Embedded in the plasma membrane.
Based on the diagram, the site of modification and packaging of proteins and lipids prior to export from the cell is the Golgi apparatus.
Cholesterol simply means a fat molecule that is formed in the smooth endoplasmic reticulum of animal cells.
It should be noted that the cholesterol is then sent It is then to the plasma membrane,
The Golgi apparatus is an organelle that can be found in eukaryotic cells. The function of the Golgi apparatus is the modification and the packaging of the lipid molecules and the protein molecules that are produced.
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Which element is more difficult to take electrons away from tin or Gallium and why ?
Cesium (Cs) in particular can surrender its valence electron quite conveniently than lithium (Li). In fact, the ease with which the alkali metals give up an electron varies as follows: > Cs > Rb > K > Na Li is the most likely to lose an electron, followed by Cs and Li.
What is reactivity?In chemistry, reactivity is the impulse that causes a chemical substance to undergo a chemical reaction, either on its own or in conjunction with other materials, resulting in the release of energy.
The reactivity of an element is a measure of how easily it will combine with other elements to form substances.
The number of electrons in an atom's outermost shell determines its reactivity. Noble gases have low reactivity so even though their electron shells are complete.
Cesium (Cs) in particular can more easily surrender its valence electron than lithium (Li).
In fact, the alkali metals' ability to give up an electron varies as follows: > Cs > Rb > K > Na Li has the highest probability of losing an electron, followed by Cs and Li.
Thus, these are some elements that is more difficult to take electrons away from tin or Gallium.
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what system sends "electrical" signals around your body
Answer:
The nervous system is a complex network of nervous tissue that carries electrical messages throughout the body. It includes the brain and spinal cord.
do you think a hand-crank flashlight would be a good energy system for the rescue workers? Why or why not?
Answer:
No.
Explanation:
No, hand-crank flashlight would not be a good energy system for the rescue workers because the light turns on by applying muscle force on the hand-crank flashlight and after that, the device convert muscle force into electric energy and the light turns on and we know that the rescue worker have a tough job which requires both hands so this hand-crank flashlight is not useful to him.
How is radar used to forecast weather?
It shows areas of high and low pressure.
It collects data in the upper atmosphere.
It collects weather data as part of a network around the country.
It locates and tracks storms, and follows the path of storm systems.
Answer:
D. It locates and tracks storms, and follows the path of storm systems.
Explanation:
It's correct on Edge 2021
Radar is used to forecast weather through the following:
By locating and tracking stormsFollowing the path of storm systems.What is a Radar?Thus involves the use of radio waves to determine the distance, angle, or relative velocity of objects.
This is why it is used locating and tracking storms, and following the path of storm systems during weather forecasts,
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