Before mitosis begins, which happens before the nucleus starts diving?
A. The cytoplasm separates.

B. The DNA replicates.

C. The sister chromatids separate.

D. The homologous chromosomes cross over.

Answers

Answer 1

Answer:

B. The DNA replicates.

Explanation:

Activity in the chromosomes must occur before the beginning of mitosis. The cells will enter the S1 phase in preparation to divide.

Answer 2

Answer:

B should be your answer

Explanation:


Related Questions

If there are wastes in our bodies, through homeostasis, our bodies try to get rid of those wastes. What two systems directly remove wastes from the human body? O circulatory & immune immune & nervous excretory & musculoskeletal respiratory & excretory​

Answers

Answer: Excretory and immune systems

hello please help i’ll give brainliest

Answers

Answer:

Second choice.

Explanation:

Symbiosis is when two organisms help each other, usually benifitting one if not both of the said orgaisms.

Which statement describes both a positive impact and a negative impact associated with the effects of nitrogen-enhanced fertilizers?

They increase polluted runoff and damage drinking water.
They increase plant growth and damage drinking water.
They increase denitrifying bacteria and increase plant growth.
They increase both limiting resources and denitrifying bacteria.

Answers

Answer:

   Option B                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Explanation:

Nitrogen fertilizer runoff into the farmlands results into Eutrophication which is a form of nutrient enrichment of the water body. Because of the nutrient enrichment, the productivity of the water increases and hence the oxygen level of the water reduces thereby degrading the quality of water and adversely affecting the aquatic life in the water body

Hence, option B is correct

Answer:

listen to the man... B

Explanation:

hi! please help i’ll give brainliest

Answers

Answer:

The second choice.

Explanation:

The river moves faster which brings in more soil and dirt from the banks which is where A is located.

Answer:

A

Explanation:becasue the water is faster ,so ebertyime there’s an explosion the Easter just carries the particles away.

Need this answer please thanks

Answers

A) 2 identical cells each with original number of chromosomes

Answer:

Option A

Explanation:

There are 2 identical Cells and has same original number of

chromosomes!

I hope this helps.

Which of the following statements is NOT true of photosynthesis?

Photosynthesis captures and uses energy from the Sun for daily activities.

Photosynthesis captures and stores energy from the Sun.

Photosynthesis requires carbon dioxide and water.

Photosynthesis stores the energy from the Sun in molecules of sugar.​

Answers

Answer:

photosynthesis captures and uses energy from the sun for daily activities

Explanation:

what did I do wrong?
what is the difference between elevation and altitude?

Answers

Elevation is measured from the ground and up. Altitude is measured from sea level. The ground isn’t always at sea level, which causes the difference.

Which of the following best describes a carbohydrate?

 A. Carbohydrates are composed of amino acid monomers and are involved in cell signaling, cell transport, immune responses, and the cell cycle.

 B. Carbohydrates are organic macromolecules that are made up of carbon, hydrogen, and oxygen atoms and are used for energy storage or as structural molecules.

 C. Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

 D. Carbohydrates are organic macromolecules that are insoluble in water and have the ability to store energy for extended periods of time.

Answers

Answer:  C.)  Carbohydrates always consist of a five-carbon sugar, a nitrogenous base, and one or more phosphate groups and are used to store genetic information.

Explanation:

The fur that a bird uses in its nest is …


a) abiotic

b) biotic

c) neither


plz hurry

Answers

Abiotic hope it helps !

How many new, unique cells are produced by the end of meiosis? *
None. All the cells are identical.
1
2
4

Answers

Answer:

4

Explanation:

What Is the location of the instructions that code for traits?

Answers

Answer:

Traits are coded for in DNA, specifically in genes.

Explanation:

DNA, as you probably already know, is made up of long sequences of nucleotides of A's, T's, C's, and G's. When transcripted into mRNA and translated into proteins in ribosomes, the order of these nucleotides signal which amino acids to produce for the protein. Proteins are extremely important and have many roles throughout the body, which means they actualize the code of DNA into physical traits. I hope this helped.

Two distinct bands appear in a single lane at the completion of an SDS-PAGE analysis of an unknown protein. Select one: a. These bands represent two subunits of a homodimer. b. Each band represents a different sized subunit of a multimeric protein. c. Each band represents a protein subunit with different charge to mass ratio. d. These bands represent two subunits of a heterodimer. e. These bands represent two separate subunits of identical size.

Answers

Answer:

b. Each band represents a different-sized subunit of a multimeric protein.

Explanation:

SDS-PAGE analysis allows the separation and discrimination of proteins according to their molecular weight. The technique separates proteins in an electromagnetic field.

The SDS-PAGE technique makes proteins move in solid support -gel- by the action of the electric field. The distance reached by each protein is proportional to their molecular weight. The protein separation from a mixture results in bands that reflect their size.

SDS is a detergent that denaturalizes the protein and sets a relation charge size, such as that the motion of the protein in the gel is proportional to its weight. The bigger the protein is, the stronger interaction with the polyacrylamide gel there will be.  The speed of displacement in the electromagnetic field is inversely proportional to the protein size.

Plz help more bio multiple choice!

Answers

Answer:

d. Antibody

Explanation:

Antibody is a protein that recognizes and binds to antigens!

I hope this helped!

Identify which of the following statements does NOT support the
theory of Natural Selection.

A. populations tend to produce more individuals than the
environment can support.

B. individuals adapt to their environments and, thereby, evolve.

C. genetic variation exists within populations.

D. individuals who survive longer tend to leave more offspring than
those who die young.

Answers

Answer:D. individuals who survive longer tend to leave more offspring than

those who die young.

Explanation:

I will give brain to correct answer!

When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?

A.) Straw

B.) Garden hose

C.) Water Balloon

D.) Strainer

Answers

C water balloon isn’t it

The best model of a guard cell is Water Balloon. Thus, option "C" is  the correct answer.

What is Transpiration?

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.

Transpiration is essentially evaporation of water from plant leaves. Transpiration is important because water is needed for photosynthesis and because water cools a plant off.

Thus, option "C" is  the correct answer.

To learn more about transpiration click here:

https://brainly.com/question/2951421

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Which of these best describe a Punnett Square Shape?
O a) Circle with 4 Parts
Ob) Square with 4 Parts
Oc) Triangle with 3 parts

Answers

Answer:

Option b, Square with 4 parts

Hope this helps!

Answer) A punnet square is a square with 4 parts

So B

Which of the following answer choices best explains what process lead to each cells' unique structures
and functions?
Choose 1 answer:
A series of specific mutations allowed the brain and kidney cells to become specialized for the
structures and functions they possess.
B
Apoptosis allowed the brain and kidney cells to become specialized for the structures and
functions they possess.
Differentiation allowed the brain and kidney cells to become specialized for the struct and
functions they possess.
During fertilization, a sperm cell fused with an egg cell, resulting in a zygote.

Answers

Answer: Differentiation allowed the brain and kidney cells to become specialized for the structures and functions they possess.

Explanation:

Differentiation allowed the brain and kidney cells to become specialized for the structure and functions they possess.

CELLULAR DIFFERENTIATION:

Cellular differentiation is the process whereby an unspecialized cell (stem cell) gives rise to a cell that is more specific in function.

Stem cells are said to be totipotent meaning that they are capable of dividing into special (differentiated) cells.

Cell differentiation is brought about by gene expression mechanism in cells i.e. some genes are expressed in some cells and not expressed in others.

Since all cells contain the same type of gene, they are bound to function the same without difference in the type of gene expressed in them.

Cell differentiation allows different cells in a multicellular organism to contain different structures and ultimately perform different functions.

Therefore, differentiation allowed the brain and kidney cells to become specialized for the structure and functions they possess.

Learn more at: https://brainly.com/question/18639909?referrer=searchResults

I NEED THIS QUESTIONS IS FOR TODAY HELP!!!!

NO LINKS PLEASE PLEASE!!

Answers

Answer:

Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range.

Explanation:

Precipitation that does not permeate the ground runs off the surface quickly. It forms small streams that widen and become longer. Where does the water from these streams drain?

A. springs
B. wells
C. aquifers
D. rivers

Answers

Answer:

rivers because smaller bodies of water always drain into bigger ones

Rivers because of their long streams

A pea plants has two different alleles for flower no color, look at the picture and tell me what to put for the every bit of the graph, look at the photo and tell me what to put

Answers

Answer:

The pea plant would produce 1 WW, 2 Wp, and 1 pp. There would be 3 white flowers, and 1 purple.

Explanation:

Why don’t all organisms have the same available energy

Answers

Answer:

The reason why all organisms don't have the same energy is because of the food they eat.

Explanation:

Choose from these ecosystems:

Prairies

Forests

Beaches

Dunes

Lakes

Ponds

Rivers

Streams

Wetlands

Coral Reefs

Estuaries

Salt Marshes

Mangrove Swamps
Florida Ecosystems



Once given your Florida ecosystem, you will research and present the topics listed below about your ecosystem. Please include visuals.


Briefly tell us where in Florida your ecosystem is often found and general characteristics

---average amount of water

---general physical characteristics

---unique characteristics of your ecosystem


List and describe 3 common producers found in your ecosystem

---include information such as what type of species prey on these producers, what the producer needs in order to survive and thrive, etc.)


List and describe 6 common consumers found in your ecosystem

---In your descriptions please include what the animals are preying on, where they build shelters, what their niche is, etc.)


Try to find at least one decomposer and/or scavenger in your ecosystem

--- What is it eating/decomposing? How is this helpful to the ecosystem?


List and describe one example of mutualism, one example of commensalism and one example of parasitism in your ecosystem

---Name the species involved and explain the relationships


List any endangered, threatened or extinct species from that ecosystem



Explain 1 food chain in your ecosystem



Explain competition between species in your ecosystem


please help fast am giving 20 points and brainliest

Answers

Answer:

Wetlands and others competition

what is the element irons family name?​

Answers

Group 8 is a group of chemical elements in the periodic table. It consists of iron, ruthenium, osmium, and hassium. They are all apart of the transition metals family.

I hope this helps!

Answer:

transition metals

Explanation:

In the carbon cycle, atmospheric carbon dioxide is converted into organic material by which process? a) transpiration b) cellular respiration c) decomposition d) photosynthesis

Answers

Answer:

The correct answer is d) photosynthesis

Explanation:

Photosynthesis is the process by which plants transform inorganic matter from their external environment into organic matter that they will use for their growth and development. It basically consists of the production of sugars from C02 (carbon dioxide) in the air, minerals and water with the help of sunlight. In this reaction, oxygen molecules are released and carbohydrates are fixed in the plant. Plants absorb sunlight through a pigment called chlorophyll. Not only can plants fix CO2, so do certain bacteria and green algae. Photosynthesis is conditioned by internal plant factors and external or environmental factors.

Question 12

If an insecticide reduced the population of grasshoppers , what would happen to the population of shrew ?

A. Increase
B. Decrease
C. Remain the same
D. Run amuck

Answers

B. Decrease. The shrew population is dependent upon the grasshoppers as a prey item. A decrease in the available prey would result in a decrease in the predator population due to lack of resources to support the current population.

Can you please help me

Answers

The answer is A. Carrying capacity

A partir del concepto de osmorregulación cual es la regulación hídrica y salinas en peces de agua dulce y salada

Answers

Answer:

Absorben o excretan agua salada para mantener la homeostasis.

Explicación:

La regulación hídrica y salina en peces de agua dulce y salada se realiza según las condiciones ambientales. Los peces pueden pasar mucha orina muy diluida en la que hay menos solutos o sales, y logran el equilibrio de electrolitos en el cuerpo mediante el transporte activo de sales a través de las branquias. En un ambiente marino hipertónico, los peces de agua salada comienzan a beber agua de mar y mantienen el equilibrio electrolítico mientras excretan el exceso de sales a través de sus branquias y su orina.

GIVING BRAINLIEST TO CORRECT ANSWER!
What would cause water to turn from a gas to a solid?
A) Take energy out of the system
B) Put energy into the system
C) Increase the water’s mass
D) None of the above

Answers

Answer:

A

Explanation:

It takes or releases energy during phase change

how do i get rid of hicups?????

Answers

Answer:

just hold your breath for as long as you can

Explanation:

Answer:

Explanation:

Hold your breath and swallow three times.

Breathe into a paper bag but stop before you get lightheaded!

Drink a glass of water quickly.

Swallow a teaspoon of sugar.

Pull on your tongue.

Gargle with water.

i just asked go ogle :D

Thomas Malthus was an economist who influenced Darwin's developing theory of evolution. Malthus observed that the birthrate among humans exceeded the death rate. If this trend continued, soon there would not be enough resources to support human population growth. He reasoned that the only things capable of stopping human population growth were famine, disease, and war. Darwin applied this thinking to animals and plants as well, noting that far more offspring were produced than survived to a reproductive age. 2. How did Charles Darwin build on the work of Thomas Malthus to develop the idea of evolution by natural selection

Answers

Answer:

The work of Thomas Malthus help and influence Darwin Thomas to refine his theory of natural selection by explaining that there is a meaningful competition between the individuals of a particular species or population for a specific resource such as food or shelter.

Thomas Malthus predicted that the human population is reproducing faster than its death race and will lead to growing faster than space and food supplies needed to sustain it. Darwin concluded further that If all offspring of almost any species survived for several generations, they would overrun the world and therefore a healthy and meaningful competition is present and to overcome this natural selection takes place as the individual adapt will ultimately survive.

Other Questions
Describe the four sources of evidence for evolution upon which Darwin based his ideas in common descent. TRUE or FALSE: The only way to see a recessive trait is to inherit 2 recessivealleles. 1. If A is an invertible matrix, then what is det(A-1) equal to?a) 0b) det (A) c) 1/det(A)d) 1 58 Select the correct answer. An investment banking house conducted a survey to determine how two of its proposed investment plans for three different age categories are used. This table shows the responses they received. Plan l Plan II Neither 19 14 17 Ages 26-35 Ages 36-45 Ages 46-55 14 28 8 00 27 21 2 What percentage of people preferring plan I are from the 36-45 age group, and what percentage of people from the 46-55 age group prefer plan II? Round your answers to the nearest whole number. OA 2396 of people who prefer plan I are from the 36-45 age group, and 42% of people from the 46-55 age group prefer plan II . O B. 28% of people who prefer plan I are from the 36-45 age group, and 42% of people from the 46-55 age group prefer plan II. 2396 of people who prefer plan I are from the 36-45 age group, and 33% of people from the 46-55 age group prefer plan II. 28% of people who prefer plan I are from the 36-45 age group, and 33% of people from the 46-55 age group prefer plan II. OD es reserved what is 5 times 1/10 in simplest form. Why aren't Amish workers allowed to buy or use the R.V.'s they make? summary of The interlopers A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. y = 0 + 1x + 2x2 +where y = traffic flow in vehicles per hour x = vehicle speed in miles per hour The following data were collected during rush hour for six highways leading out of the city. Traffic Flow () Vehicle Speed () 1256 35 1330 45 1226 30 1335 50 1349 50 1124 25 a. Use the data to compute the coefficients of this estimated regression equation (to decimals). b. Using , test for a significant relationship. (to decimals) -value (to decimals) The relationship - Select your answer - significant. c. Estimate the traffic flow in vehicles per hour at a speed of miles per hour (to decimals). vehicles per hour. I need help so I can helpl my grandson to pass this quz please and thank youits in the download pdf. Geometry yes yes yes yes yes yes yes yes yes yes 3. What is the breadth of a rectanglewhose length and area are 8cmand 40cm- respectively? State if the triangles in each pair are similar if so state if you know they are similar (please show work if possible) Dustin is riding his bike from Logan, Utah to Jackson Hole, Wyoming in a bike race. He must ride at least 200 miles before he will complete the course. He has already biked 56 3/4 miles.If he can bike roughly 18 5/8 mph, how many more hours will it take him to finish biking at least 200miles? Round your answer to the nearest whole number of hours.Enter your answer as a whole number, like this: 42 Sea turtles, mosquitoes, and frogs all show a A scientist observed this monkey with a minor cut on its face. After one week, the cut had healed and was gone. Explain how this is possible. which organ is central to the body's metabolism of nutrients??a-) the stomachb) the kidneysC) the liverd) the small intestine At which root does the graph of f(x) = (x + 4)(x + 735 cross the x-axis? 4.4s + 6.2 = 8.8s - 1.8please help PLEASE HELP RIGHT NOW!! NO LINKS 7 %of all jails hold over 50% of all prisoners.TrueFalse