Please help me with this, I need to finish it and would like to get some sleep tonight. It's in the picture.

Answer:

D. A nitrogen base has been added to the DNA molecule.  

Explanation:

You can see that the sequence for the nitrogen bases are in the exact same order after the exposure, this rules out A.  You can count how many bases there are, 7 before and 8 after so it cannot be B. Lastly, given that they are in the same order as were before and that a base has been added, you can see that no bases were replaced (so not C) and that D is your answer.  

Answer:

C. The pH is too acidic

Explanation:

Many acids and bases in living things are secreted to provide the proper pH for enzymes to work properly. Enzymes are biological catalysts, such as pepsin, which is needed to digest protein in the stomach and requires an acidic environment.

Answer:

Prokaryotic cells include archaea and bacteria. They do not have membrane bound nucleus as well as most of the organelles

Answer: Provide support to the body.

Explanation:

The skeletal system is a system which is formed by the bones. The bones are important for the structure and function of the body. The bones are connected with the muscles to allow the movement of the body, and they protect the vital organs like heart, lungs, brains, and others. They provide support to the soft tissues, organs, and muscles of the body. They keep the human body upright. The skeletal system provide shape to the body. It provides support by acting as regions of attachment of soft body parts and muscles.

Answer:

D) Daughter cells are produced with only half the chromosomes of the parent cell.

Explanation:

The primary goal of meiosis is to create four gametes, which are cells with only half the chromosomes of the parent cell

Answer:

D. all of these

Explanation:

I just got it right in study island (:

Answer:

it's D

Explanation:

Answer:

Chemically & Physically(mechanically)

Explanation:

Weathering is the wearing away of rock found at the surface of the earth. There are different ways weathering can occur and they include;

1. Mechanical weathering: This is the breakdown of rock into bits or fragments. Physical factors such as water can lead to this breakdown. When water falls into the pores and cracks of rocks, pressure can be created that will eventually result in the breakdown of these rocks.

2. Chemical weathering: This type of weathering causes a change in the physical makeup of the rock. The new form of rock created is more prone to erosion. Temperature is factor that can speed up chemical weathering.

Answer:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas.

Answer:Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants .

Explanation:

After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules

Answer: Steep, high velocity, no silting. The high water speed picks up silt from the bottom instead of letting it settle to the bottom. When the land gets level like often happens at the mouth of rivers where the water spreads out and slows down, silt settles to the bottom and you could get a wide, shallow delta.

(Put in own words this is from online hope it helps)

Ebolavirus, genus of viruses in the family Filoviridae, certain members of which are particularly fatal in humans and nonhuman primates. In humans, ebolaviruses are responsible for Ebola virus disease (EVD), an illness characterized primarily by fever, rash, vomiting, diarrhea, and hemorrhaging.

Answer:

25% of the progeny is expected to be dihybrid, BbFf, expressing Black and short fur

Explanation:

Available data:

Parentals)            BbFf      x         bbff

Phenotypes) Black/Short    Brown/Long

Gametes)       BF, Bf, bF, bf      bf, bf, bf, bf

Punnett square)      BF         Bf          bF          bf

                      bf    BbFf     Bbff       bbFf       bbff

                      bf    BbFf     Bbff       bbFf       bbff

                      bf    BbFf     Bbff       bbFf       bbff

                      bf    BbFf     Bbff       bbFf       bbff

F1) 4/16 = 1/4 = 25% of the progeny is expected to be dihybrid, BbFf, expressing Black and short fur

    4/16 = 1/4 = 25% of the progeny is expected to be bbFf, expressing Brown and short fur

    4/16 = 1/4 = 25% of the progeny is expected to be Bbff, expressing Black and long fur

    4/16 = 1/4 = 25% of the progeny is expected to be bbff, expressing Brown and Long fur

Answer:

25%

Explanation:

Because i took the test

Answer:

Science, Technology, Engineering, and Math.

Answer:

problem solving creativity critical analysis

STEM is an approach to learning and development that integrates the areas of science, technology, engineering and mathematics. Through STEM, students develop key skills including: problem solving. creativity. critical analysis.

Explanation:

This should help! Have a great day!!

Answer:

C sorry if im wrong

Explanation:

.

Answer:

A.

Explanation:

Answer:

im gonna have to go with D

Answer:

false

Explanation:

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. For example, turning on a light would seem to produce energy; however, it is electrical energy that is converted.

Hope this helps get an A for me kay!!!

Answer:

c because they need to live instead of dying. bc from other bigger animals they can see it and eventually die so.

Answer:

1. Fluid or water balance

2. Electrolytes

3. Thirst mechanism.

4. Osmosis

5. Dehydration

6. Diuretics

7. Interstitial fluid

8. Hyponatremia

Explanation:

1. Fluid or water balance is achieved when there is an equal concentration of water and electrolytes inside and outside the body's cells. The thirst mechanism of the body serves to maintain fluid balance of the body state by ensuring that enough fluid is consumed to allow for an equal concentration of electrolytes between the intracellular and extracellular fluid compartments.

2. Charged ions such as sodium, potassium, and chloride are called electrolytes. They are the molecules which help the body to maintain fluid balance when they are pumped in or out of the cell.

3. The feeling of dry mouth experienced during dehydration is part of the body's thirst mechanism.

4. The process by which water moves in and out of cells from an area of lower concentration of solutes to an area of higher concentration of solutes is called osmosis.

5. If you are not consuming enough water, or if you are excreting too much water from your body, dehydration can occur.

6. Diuretics are substances that cause the body to lose water via urine.

7. The liquid that is between cells is called interstitial fluid.

8. Hyponatremia (low sodium concentration) occurs when the extracellular concentration of sodium is too low. It can occur when too much water is consumed over a short period of time, or it can occur due to sodium loss from the body due to kidney diseases.

Answer:

it should be the Small Intestine

Answer: Periodic table

Explanation:

Answer: Periodic table of the elements

The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties. The structure of the table shows periodic trends.

QUESTION :::::

Which gas is most necessary for plants to do photosynthesis?

A. carbon dioxide

B. nitrogen

C. oxygen

ANSWER ::::

carbon dioxide

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.

Explanation:

CAN I GET THE CROWN PLEASE I HOPE IT HELPS THANKS

Answer: https://medlineplus.gov/genetics/understanding/genomicresearch/genomeediting/

HOPE THIS HELPS

Answer:

It looks at the role of adenosine triphosphate, or ATP, a chemical that can be released by red blood cells and is believed to cause blood vessels to dilate during exercise, when muscles demand more oxygen.

Explanation:

Hope this helped Mark BRAINLIEST!!!

About the question:

You will find the cell image in the attached files

Answer:

b.Store water

Explanation:

Here we are looking at a vegetable cell. And specifically, the X letter is labeling a vacuole, which we can recognize by its size.  

We can find vacuoles either in animal or vegetable cells. They are essential to the correct functioning of the cell.

Now we are going to describe a vegetable cell vacuole.

Usually, they occupy a central place on the vegetable cells. They are big organules, representing almost 90% of the total cell volume. They are the biggest-sized organelle of vegetable cells.

Vacuole formation is thanks to the fusion of many vesicles release by the Golgi complex, and sometimes, with the RER intervention. There are different types of vacuoles according to their function, and many times, a single cell might carry different types of vacuoles. These organelles harbor diverse fluids, among which there are water and enzymes. Eventually, they can also contain solid substances such as proteins, salts, and sugars.

Vacuoles accomplish different functions. The main one is to keep turgor, store waste elements, and substance degradation. Here we are going to focus on the turgor function that involves water storage.

Turgor is a measure of hydrostatic pressure against the cell walls and controlled by these organelles. Vacuoles incorporate substances in their interior such as ions, creating an osmotic environment variable concerning the cytoplasmic one. This environmental variability produces a water flow from inside to outside and vice-versa. The capability of water storage is crucial for vegetable cells.

Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.