Active transport requires energy because it usually involves the movement of substances from an area of low concentration to an area of high concentration.
What is active transport?Active transport is the movement of a substance into or out of the cell. The movement is against the concentration gradient, and the movement is from lower concentration to higher concentration.
Example is diffusion.
Thus, the correct option is A.
Learn more about active transport
https://brainly.com/question/12133248
#SPJ2
what type of commensal relationship is cattle egret and cattle ?
Answer:
The Cattle Egret follows cattle and eats the insects stirred up by the cattle. They are not benefiting each other or harming each other.
what happens during anaphase
Answer:
each pair of chromosomes is separated into two identical, independent chromosomes by a structure called the mitotic spindle. The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
Explanation:
Answer:
During anaphase, the chromosomes are separated into two groups that are genetically identical, and are move to the opposite pole of the cell by the spindle.
Explanation: During cell division, different changes are observed in the cell. In prophase, the chromosomes condense in the nucleus and become visible while the spindle begins to form in the cytoplasm. In metaphase, the chromosomes are arranged in the middle of the cell by the spindle. In anaphase, the spindle separate the chromosomes into two genetically identical groups and move them to opposite ends of the spindle poles. In telophase, there is formation of nuclear membrane around the two identical sets of chromosomes, spreading out of the chromosomes and breaking down of the spindle.
what role do hormones play in dna replication
What is gravity's role in plate tectonics?
Answer:
*please mark me brainliest!*
It can be described as "ridge push and slab pull."
Explanation:
The three primary causes for tectonic plate movement are the convection of material in the mantle, gravity and the rotation of the planet. These forces cause each of the seven major plates and numerous other microplates to move independently of the others at a rate of a few centimeters per year.
Gravity plays a crucial role in plate tectonics by influencing the movement and interactions of Earth's tectonic plates. Gravity plays a significant role in plate subduction, which occurs when one tectonic plate sinks beneath another at convergent plate boundaries.
Plate Collision: Gravity acts to compress and deform tectonic plates during plate collisions at convergent boundaries. Mountain ranges, like the Himalayas, are formed when the gravitational force between the plates pulls them together and causes them to bend, fold, and rise.
Isostasy: The Earth's crust is kept in an isostatic equilibrium by gravity. The equilibrium between the upward pull of gravity and the buoyant force of the lithosphere (including tectonic plates) is known as isostasy.
To know more about Gravity:
https://brainly.com/question/31321801
#SPJ6
5 Points
What branch of Earth science studies the weather?
O A. Astronomy
B. Hydrology
O
O
C. Volcanology
O
D. Meteorology
SUBMN
The attachment of nucleotides to form a complementary strand of DNA during replication
a.
is accomplished only in the presence of tRNA.
b.
is accomplished by DNA polymerase.
c.
prevents separation of complementary strands of RNA.
d.
is the responsibility of the proofreading enzymes.
Answer: is accomplished by DNA polymerase.
Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a complementary strand of a DNA molecule during replication. The double stranded DNA helix is first unwind by the enzyme known as helicase giving rise to two DNA strands which serve as templates for replication. DNA polymerase then binds to a primer, a short nucleotide sequence and catalyzes the attachment of nucleotides to the primer to form a growing strand that is complementary to the parent DNA.
What is the maximum number of atoms that a carbon atom can bond with in a organic compound
Answer:
4
Explanation:
carbon atoms only have four valence electrons so they can only bond with 4 other atoms
Answer: Four (4)
Explanation: Carbon has a total of six electrons in its shell but has four (4) electrons in its outermost shell. Electrons found in the outermost shell are called valence electrons. This means that carbon needs four (4) electrons to complete its octet structure that is carbon needs four electrons to attain a stable octet structure of noble gases.
What is the main function of the endocrine system?
A. To control body activities through the release of chemicals
B. To help in body movements and maintaining posture
C. To produce new individuals through fertilization
D. To exchange gases like oxygen across the body
Pls answer fast!! 100pts!!
Answer:
Hello, Here's your answer The endocrine system help control the body through chemicals
Explanation:
"The endocrine system is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and function."
Have a great day!
Answer:
your answer would be a, To control body activities through the release of chemicals
Explanation:
The endocrine system's basic purpose is to control body activities through the release of chemicals
The diagram below shows several rock layers and other geologic features. Each feature is labeled with a unique letter. The order of the letters do not necessarily reflect the order in which the features formed. Examine the diagram, and answer the question that follows.
Using the principles of original horizontality, superposition, and cross-cutting relationships, determine the missing step in the following order of events:
The lower layers were originally deposited as horizontal layers in the following order: M, N, P, Q, R.
___?___
Igneous intrusion G cross-cut layers M–Q.
Erosion occurred at surface X (unconformity).
The upper layers were deposited in the following order: H, I, J.
Alternatively, igneous intrusion G may have cross-cut layers M–Q before the layers were tilted or even before layer R was deposited.
A.
Layers M–R were tilted.
B.
Erosion occurred in layer J.
C.
Erosion occurred in layer I.
D.
Layers H–J were tilted.
Answer:
layer m-r tilted
Explanation:
The missing step is that Layers M-R were tilted. This conclusion is reached based on principles of original horizontality, superposition and cross-cutting relationships.
Explanation:Using the principles of original horizontality, superposition, and cross-cutting relationships, we can infer that the missing step in the sequence is option A: Layers M–R were tilted. This is because the layers were initially deposited in a horizontal orientation (the principle of original horizontality). They were then disturbed, causing them to tilt before the igneous intrusion G could cross-cut through layers M–R (principle of cross-cutting relationships). The principle of superposition implies that the lower layers were deposited first, starting with M. Erosion would then occur at surface X (unconformity), allowing for the deposition of the upper layers (H, I, J) in sequence.
Learn more about Geologic principles here:https://brainly.com/question/30672250
#SPJ6
Adaptive radiation in island chains
(finches; honeycreepers)
Exploiting a new niche in a common
location
Extrinsic factor prevents two or more
groups from mating with each other
regularly
Gene flow has been reduced between flies
that feed on different food varieties, even
though they both live in the same
geographic area.
Genetic polymorphism results in
reproductive isolation
Population isolated from another due to
geographic barrier
Populations remain in same physical area.
The gradual formation of the Grand
Canyon split a population into 2 divergent
species
Allopatric Speciation
Sympatric Speciation
Answer:
Exploiting a new niche in a common location - Allopatric Speciation
Extrinsic factor prevents two or more groups from mating with each other
regularly - Sympatric Speciation
Gene flow has been reduced between flies that feed on different food varieties, even though they both live in the same geographic area - Sympatric Speciation
The gradual formation of the Grand Canyon split a population into 2 divergent
species - Allopatric Speciation
Bobby went for a bike ride down the neighborhood, he firstly goes to Point A where a tree is, then he traveled to point B where his friends house is at to pick him up, and then he heads to Point C where him and his friend can relax at
what is the distance bob traveled and what was the displacement while bob was traveling?
Distance travelled by Bobby was 7 meters and the displacement was 5meters.
Explanation:Distance is defined as the total length of the path travelled by a body from its initial position to final position. Displacement on the other hand is defined as the length of the straight line joining the initial position and the final position of the body.
Here, Bobby travelled from point A to point C via point B which took him to travel more distance. The length of distance from point A to B is 4 meters and from point B to C is 3 meters. So the total distance covered is [tex]4+3[/tex] meters = 7 meters.
While the length of path straight from point A to C is 5 meters. So displacement is 5 meters.
Choose the four variables that are most important to control in an experiment about the rate at which
bread turns moldy
humidity
B time of day
age of bread
type of bread
shape of bread
height of observer
type of shelf surface
type of storage container
Answer:
the most important variables are:
age of bread
type of bread
humidity
Type of storage container
Explanation:
Answer: humidity age and type of break and type is staorage container
Explanation:
This is the result of nondisjunction of chromosomes during meiosis. This mutation results in three copies, instead of the normal two . If can happen with sex or autosomal chromosomes.
Answer:
The result of non-disjunction of chromosomes during meiosis, producing three copies of the chromosome in the embryos -instead of two- is called trisomy.
Explanation:
With reference to genetics, a cell is diploid because it has an even number of chromosomes, distributed in pairs - each of which is contributed by a parent - and responds to the formula 2n.
In trisomy, non-disjunction during meiosis of the homologous chromosomes causes an overloadin the corresponding gamete, which during fertilization will originate an embryo whose formula is 2n+1.
Trisomias are considered mutations, which can physically and functionally affect an individual, or even make an embryo not viable. This defect can occur in both autosomes and sex chromosomes.
A very common example of this mutation corresponds to the trisomy of chromosm 21, known as Down syndrome.
Learn more:
https://brainly.com/question/835543
Answer:
the correct answer is trisomy
Explanation:
i got it right on usatestprep
How do you think pollination takes place in flowering plants?
What are monozygous twins? How are monozygous twins represented on a pedigree chart
Answer:
Monozygous twins can be described as the twins which arise from the same egg. A single egg divides into two zygotes to form the monozygotic twins. Such kind of twins are are also known as identical twins.
In a pedigree chart, the monozygotic twins are represented by a a horizontal line connecting the two diagonal lines that lead down to the gender symbols. A horizontal line between the children hence depicts that they are identical twins.
If the squirrels in this community died out, how would this change be most
likely to affect another organism in the community?
Answer:
Explanation:
B.the hawks would leave or find another food source.
Answer: B
Explanation:
which of the following should be used to see small objects that are not visible to the naked eye? A metric ruler, a balance, a microscope, or a transfer pippit?
Answer:
Microscope
Explanation:
apeeeeeeeeeeex
The energy of motion is called _____. kinetic energy potential energy weight mass need this in 2 days HELP MEH
Answer:
Kinetic Energy
Explanation:
Kinetic Energy is energy caused by motion. For instance, temperature is simply a measure of kinetic energy, or the movement of particles.
Answer:
Um Kinetic energy (hope it helps you)
Explanation:
Kinetic Energy is energy caused by motion.
All but one of the conditions will increase the reaction rate of an enzyme. The condition that will NOT increase the reaction rate is
Answer:
decreasing the concentration of the enzyme.
Explanation:
3. A news clip once reported that a long distance runner drank too much water and eventually
collapsed and died? Explain why using what you have learned in this lab and in class.
Answer:
Hyponatraemia can be described as a situation in which there is a decrease in the sodium concentration of serum. Such condition arises due to excess of water due to which the concentration of the solutes becomes a lot lesser. Hence, it is also called as water intoxication.
The long-distance runner collapsed and died because he had consumed so much water that the water concentration in his body had diluted the concentration of vital minerals such as sodium. The drop-down of the sodium concentration was up to dangerous levels.
Final answer:
Water intoxication, or hyponatremia, occurs when too much water is consumed in a short period, diluting blood sodium levels which can lead to severe health issues and even death. It is particularly risksome for athletes who do not replenish electrolytes lost during intense activity. The condition emphasizes the importance of electrolyte balance along with hydration.
Explanation:
The news clip you are referring to likely discusses a rare but serious condition known as water intoxication or hyponatremia. This condition occurs when someone drinks too much water in a short period, leading to a dilution of sodium in the bloodstream. Our bodies need sodium and other electrolytes at specific concentrations to function properly. When these concentrations drop too low, it can result in symptoms ranging from headaches and nausea to more severe consequences like seizures, coma, and even death. The cells may swell from the excess water, particularly dangerous are the brain cells, which can lead to increased pressure inside the skull and possibly death.
Healthy kidneys can typically excrete up to one liter of excess water per hour, but drinking beyond this capacity overburdens the body's regulatory systems. For athletes or anyone involved in extensive physical activity, it is crucial not only to hydrate but also to replenish electrolytes lost through sweat. Simple water rehydration without electrolyte balance can lead to the dangerous dilution effect described. Thus, the runner in the news clip likely suffered from water intoxication due to excessive water intake without adequate sodium and electrolyte replacement.
are minerals renewable resources or nonrenewable resources? why
Answer:
Minerals are non-renewable resource.
Explanation:
As Non-Renewable resources are those resources that cannot renew themselves. In other words, get depleted with use as the supply is limited. Minerals take years to form and once used cannot be got back in a short period.
Answer:
False minerals are not renewable
Explanation:
Minerals take time to form so when we use what one's are there they are gone.
with
Carbon dioxide is formed when two oxygen atoms che
dioxide?
irbon atom. Which term best describes carbon
A. compound
B.
atom
C.
element
D. mixture
How are we going to use the materials listed above
Answer:
You need to explain more the question or problem?
PLEASE HELP AND FAST THANK YOU!!!
Answer:
Statement 1: Homologous chromosomes line up at the equator in pairs.
Name of Phase: Metaphase 1
Sequence: 3
Statement 2: The cell replicates its chromosomes
Name of Phase: S-Phase, Interphase
Sequence: 1
Statement 3: Homologous chromosomes separate and move to opposite poles of the cell
Name of Phase: Anaphase 1
Sequence: 4
Statement 4: Spindle forms, DNA coils up in homologous chromosomes come together in a tetrad; crossing over may occur.
Name of Phase: Prophase 1
Sequence: 2
Statement 5: Events occur in reverse order of prophase 1
Name of Phase: Telophase 1
Sequence: 5
Explanation:
Following is a summary of the events of meiosis:
1. Interphase:
Prepares the cell for division. Duplication of DNA, duplication of centrioles occurs and the cell grows in size. At this stage the cell is diploid (2n).
2. Prophase 1:
First stage of Meiosis 1.The centrioles move to the poles of the cell, the nuclear membrane disintegrates, homologous chromosomes pair up (in the form of tetrad), form a chiasmata and then exchange segments of chromosomes with each other. This process is called crossing over.
3. Metaphase 1:
Involves the arrangement of the crossed over, homologous chromosomes on the metaphase plate which is sort of like a web of spindle fibers that originates from the centrioles.
4. Anaphase 1:
The tetrads arranged on the metaphase plate are pulled apart by the spindle fibers. This is the result of tension that build up in the spindle fibers as they grow towards opposite poles.
5. Telophase 1:
The last stage of meiosis 1. Involves the arrival of the chromosomes at the poles, the nuclear membrane starts to form and the chromosomes start decondensing. Telophase 1 yields 2 daughter cells with half the number of chromosomes as that in the parent cell.
Meiosis 2:
Meiosis 2 is exactly similar to mitosis. The only difference is that the haploid cells entering meiosis 2 do not duplicate their DNA. Meiosis 2 just involves the separation of the sister chromatids of homologous chromosomes.
As mentioned above, interphase does not occur before meiosis 2.Prophase 2 involves the disintegration of nuclear envelope, centrosomes start moving to the poles.Metaphase 2 arranges the chromosomes on metaphase plate.Anaphase 2 separates the sister chromatids from the chromosomes.Telophase 2 develops the nuclear envelope and separates the nuclei of the daughter cells into 2. Nuclear division id followed by cytokinesis (division of cytoplasm). Telophase 2 result sin 4 haploid daughter cells with one chromatid from each chromosome.Three positive factors about glycolysis is that the process is Slow,Aerobic,and Large amount of ATP molecules.True or false and if false why?
Answer:
Anaerobic glycolysis is referred to as fast glycolysis and aerobic glycolysis is referred to as slow glycolysis
Explanation:
These terms were coined in relation to the amount of ATP generated per mole of glucose. Aerobic glycolysis produces around 38 ATP molecules, while anaerobic glycolysis generates only 2 ATP molecules per mole of glucose
Like many plans to protect
endangered species, the plan
to reintroduce wolves causes
some people to weigh their
own interests against the
needs of a single species. Do
you feel that the decision is a
simple one? Can you think of
other ways to look at this
issue? Explain your answers.
Answer:
Endangered species can be described as the species of animals or plants which are at the verge of extinction. Scientists tend to recognize the importance of every species in an ecosystem and make the world aware of the species which might go extinct. Nowadays, governments and citizens of a country pay much more attention to protect the endangered species.
Although, the wolves were a threat to some ecosystems but scientific researches have shown that these organisms can be beneficial in a number of ways. Hence, measures should be taken to protect these species. However, we can introduce species of wolves where the number of preys is more so that the ecosystem can be balanced.
Final answer:
The reintroduction of wolves is a complex issue with various stakeholders having different interests. The effects on ecosystems, like those seen in Yellowstone National Park, are positive, but conflicts with human activities such as ranching and hunting arise. Conservation decisions require balancing ecological benefits, human interests, and the rights of endangered species.
Explanation:
The decision to reintroduce wolves and its impact on humans and the environment is a complex one, not a simple yes or no question. Stakeholders such as environmental activists, cattle ranchers, and hunters all have differing perspectives on the matter. Environmental activists may favor the reintroduction due to the positive ecological effects, such as those observed in Yellowstone National Park, where wolves changed the grazing behaviors of elk, leading to the regrowth of vegetation and improved ecosystem health. Ranchers and hunters, however, could face challenges like livestock predation and changes to hunting grounds.
In addressing the protection of endangered species and undertaking large conservation projects like building dams, it is necessary to recognize the various winners and losers, including both human communities and wildlife. For instance, with dam projects, while the energy produced can benefit societies, the environmental damage and loss of ecosystem services may be irreplaceable. Thinking about biodiversity conservation, we can also consider the effectiveness of purchasing 'green' products, assessing their true impact on promoting sustainable practices.
Furthermore, when a government informs someone of an endangered species on their property, they may experience a range of emotions from pride to anger. They must weigh their development plans against conservation efforts and seek compromises that balance private rights, public interest, and species protection. Lastly, strategies to deal with human-wildlife conflicts and the effects of rewilding initiatives are essential factors in conservation planning.
If the diameter of the field at 40x magnification is 4.5 mm, a object half the length of the field is
Answer:
Length of the cells = diameter of field of view/ number of cells across the field of view
Explanation:
therefore 2.25= 4.5*X
X= 2.25/4.5
=0.5 number of cells
what is the purpose of blood flow
What organelle releases energy in the cell
Answer:
mitochondria
Explanation:
Explain how the cell membrane helps the cell maintain homeostasis-a stable internal environment. Name specific structures of the cell membrane and describe their functions in you explanation
The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell. Cells also maintain a higher concentration of potassium ions and organic acids on their inside.
Was It Helpfulll For U????
The cell membrane is a lipid bilayer which prevents the passage of water and ions, allowing cells to maintain a high concentration of sodium ions outside the cell. Cells also maintain high concentrations of potassium ions and organic acids inside them.
What is Cell Membrane?The cell membrane is also known as the plasma membrane. It is found in all cells and separates the interior of the cell from the outer environment by a lipid bilayer that is semipermeable. The cell membrane controls the transport of substances entering and exiting the cell.
Some functions of cell membrane are as follows:
Keep toxic substances out of the cell.Contain receptors and channels that allow specific molecules to pass between organelles and between the cell and the outside environment, such as ions, nutrients, wastes, and metabolic products.This enable organisms to maintain homeostasis by regulating the materials which may enter or leave a cell.
Thus, the cell membrane is a lipid bilayer which prevents the passage of water and ions, allowing cells to maintain a high concentration of sodium ions outside the cell. Cells also maintain high concentrations of potassium ions and organic acids inside them.
Learn more about Cell Membrane, here:
https://brainly.com/question/13524386
#SPJ5