Which statement is true about water molecules?

A) The hydrogen atoms do not share electrons.
B) Water molecules cannot dissolve many substances.
C) The oxygen atom has a negative charge.
D) Water molecules move randomly around each other.

Answers

Answer 1

Answer: D

Explanation:


Related Questions

11. Write the complementary sequence to following DNA strand:
A A T T C G C C G GT ATT A G A C GTT

Answers

Answer: T T A A G C G G C CA TAA T C T G CTT

Explanation: The A's always pair with T's.    The G's always pair with C's.

facts about cellulose (multiple choice)

a) it is a long chain
b) it is also called fiber
c) it is made of amino acids
d) it is indigestible by humans
e) it is made by plants
f) it is a subunit of fats and oils ​

Answers

Answer:

a maybe correct me if im wrong

which molecules determine the tissue specificity of hormones?

Answers

Answer:

Steroids. Which molecules determine the tissue specificity of hormones? Receptors. Hormones bind to receptors on target cells and trigger a cellular response.

Explanation:

The tissue specificity of hormones is determined by hormone receptors. Proteins called hormone receptors are found on the cell surface. A hormone's binding to its receptor starts a chain of actions that eventually affects the activity of the cell.

For various hormones, different cells have various receptors. This implies that a hormone can only attach to cells that also contain such receptors. The tissue specificity of hormones is a result of this.

For instance, the insulin hormone attaches to receptors on cells in the muscle, fat, and liver tissues. These receptors bind to insulin, which sets off a series of processes that eventually result in the absorption of glucose from the circulation by these cells.

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Poultry products are a likely source of infection by:

Answers

Poultry products are a likely source of infection by Salmonella enterica

which causes typhoid.

Most farm animals such as pigs, cattle and poultry have been found to be

infected with Salmonella enterica as a result of their contact and exposure

to a dirty environment.

This is why it is advisable to apply much heat on poultry products such as

eggs to kill the micro-organism.

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An atom that has twelve protons in its nucleus has an atomic number of:
24
13
12
none of the above

Answers

Answer:

Protons-12, Electrons-12, Neutrons-12

Answer

12 would be the correct answer

Why do you suppose plants and forests appeared in large numbers before large animals did? Several of the choices may be correct. Select the options you expect to be the strongest contributing factors.

Choose one or more:
A. Plants had to change less to survive on land.
B. Animals need food, and there was none on land before plants.
C. The increased oxygen levels produced by land plants accelerated animal evolution.
D. The order was pure chance and could have gone either way.
E. Animals are more susceptible to radiation and needed more ozone in order to survive out of the water.
F. It was too cold for animals at first.
G. There was not enough oxygen for lungs to be effective before plants colonized land.
H. Plants were driven to land by scarce resources in the oceans, such as light and minerals.

Answers

Answer:

It Might Be G im not to sure, sorry if im wrong

What is the main difference between mitosis and cytokinesis?

Answers

Answer:

Mitosis refers to a cell centre division into two, whereas cytokinesis refers to the further breakdown of the cell cytoplasm that forms two girl cells.

Specific cell organelles and cytoplasms are cytokinesis, whereas mitosis is only inherited through heritage.

Organelle division is not essentially equal during cytokinesis.

Explanation:

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Define the term peristalsis and explain why is it so important

Answers

Answer:

Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. ... There, the food is churned into a liquid mixture called chyme that moves into the small intestine where peristalsis continues. Stretching out a piece of intestine will make it easier to see the wave-like motion

Peristalsis is a series of muscle contractions. These contractions occur in your digestive tract. Peristalsis is also seen in the tubes that connect the kidneys to the bladder.

Peristalsis is an automatic and important process. It moves:

Food through the digestive system
Urine from the kidneys into the bladder
Bile from the gallbladder into the duodenum
Peristalsis is a normal function of the body.

seeds from a single sexually reproducing plant are harvested and later planted under identical conditions. what results should be expected?

Answers

They should differ from each other depending on their genetic constitution

If two solutions are isotonic to each other then?

Answers

The answer is letter A

usefulness of earthworm​

Answers

Answer:By their activity in the soil, earthworms offer many benefits: increased nutrient availability, better drainage, and a more stable soil structure, all of which help improve farm productivity. Worms feed on plant debris (dead roots, leaves, grasses, manure) and soil. ... Nitrogen in the casts is readily available to plants.

Explanation:

Earthworms have the ability to eat and mix large amount of soil and organic matter and deposit it in the form of casts. They also enhance incorporation and decomposition of organic matter, increase soil aggregate stability, improve porosity and water infiltration, and increase microbial activity.

which statement best compare the roles of organelles in making proteins?

Answers

Answer:

Vesicles modify proteins, while the Golgi bodies manufacture proteins. Rough ER transport proteins, while the cell membrane modifies proteins. Chromosomes modify proteins, while the nuclear membrane produces proteins.

Explanation:

You are an engineer moving around your community and you find out that they are floods everywhere. What will you advise the community to do to improve the drainage?

Answers

Answer:

it depends on the severity of the flooding, if its extreme id say build canals

Explanation:

How is carbon dioxide cycled between a tree and a fox what processes are involved

Answers

Answer:

The fox exhales carbon dioxide and the tree takes in the carbon dioxide and converts it into oxygen.

Explanation:

Describe how bacteria are used to produce enzymes for washing powders.

Answers

Answer:

By using genetic engineering to insert the gene for the desired enzyme into the bacterial chromosome, then growing large amounts of the modified bacteria in fermenters.

Explanation:

Answer:

Bacteria such as fungi or algae are inserted in fermenter and feedstock such as glucose, amino acid, sucrose are inserted to be a source of food for them.

Then they are left for a time for the bacteria to reproduce more and to produce more enzymes in their cells, Then if the enzymes are extracellular they are extracted directly from the filtrate, if they are intercellular they are separated from the feedstock and crushed to be separated with any solvent such as water.

By using genetic engineering to insert the gene for the desired enzyme into the bacterial chromosome, then growing large amounts of the modified bacteria in fermenters.

Explanation:

The ______ of photosynthesis are the _______ of cellular respiration meaning their equation are the same but _______ of each other. The processes and all of life _______ on each other for survival.

Answers

Answer: The products of photosynthesis are the reactants of cellular respiration meaning their equation are the same but in direct opposite of each other. The processes and all of life depend on each other for survival.

Explanation: feel free to let me know if im wrong

7. A hen's egg with the shell dissolved is placed in a 10% salt solution. Relative
to the interior of the egg the salt solution is
A. Hypotonic
B. Isotonic
C. Hypertonic
D. Semi-permeable

Answers

A) hypertonic because it has higher salt levels than inside

The salt solution is  Hypertonic.

Hypertonic fluids contain a higher concentration of solute compared to plasma and interstitial fluid.

What is hypertonic solution?A solution that contains more dissolved particles than is found in normal cells and blood.Cells placed in hypertonic solution will shrink. Water moves from a high water concentration inside the cell to a low water concentration outside of the cell by osmosis.

What is osmosis?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.Osmosis is a passive transport process during which water moves from areas where solutes are less concentrated to areas where they are more concentrated.

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Entre las personas , la practica de estilos de vida denominados saludables ¿que consecuencias tiene sobre su metabolismo?

Answers

Answer:

El estilo de vida es una expresión utilizada para describir la forma en que se entiende o se percibe la vida. Este concepto no tan filosófico, sino más bien al estilo característico en que desarrolla  de vida. Estos aspectos abarcan, relaciones personales, del consumo, y la forma de vestir. Ademas de ello, en la descripción de las actitudes, aptitudes, y preferencias que refleja un individuo en la sociedad.

Por su parte, se puede decir que el metabolismo es el conjunto de reacciones químicas a partir de los alimento, las cuales se desarrollan en el cuerpo con la finalidad de producir energía necesaria para el desarrollo del ser vivo.

Con todo esto, se puede decir que el estilo de vida, específicamente el consumo de alimentos pueden afectar de manera importante el metabolismo en un sentido que de acuerdo a las características de los productos que se consuman, las reacciones químicas generadas pueden variar.

Asimismo, dichos factores pueden ser de riesgo o generadores de bienestar, ya que alteran de manera directa el proceso dinámico de degradación de alimentos.  

Explanation:

enzymes that recognize specific, short nucleotide sequences in double stranded dna and cleave dna at these specific sites are known as

Answers

Answer:

Restriction enzymes, also called restriction endonucleases, recognize a specific sequence of nucleotides in double stranded DNA and cut the DNA at a specific location. They are indispensable to the isolation of genes and the construction of cloned DNA molecules.

What is the Greek name for each of the spheres?

Answers

Answer:

stone (litho) or ground (geo)

air or vapor (atmo)

water (hydro)

life (bio).

Explanation:

5. What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?

Answers

Answer:

What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?

Explanation:

Triceps is the muscle that is responsible for the extension of elbow joint and also contribute to extension of shoulder joint. This muscle have three origin, that's why the name triceps. The triceps muscle has three heads which are:

A. The long head originates from the infraglenoid tubercle of scapula.

B. The lateral head originates from above the radial Grove in humerus.

C. The medial head originates form below the radial Grove in humerus.

These heads meet to form the body of triceps which gets inserted as triceps tendon in the olecranon process of ulna just behind the elbow. The contraction of this muscle causes the extension of the elbow joint.

Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.

What is Deltoid muscle?

The muscle known as the triceps is in charge of extending the elbow joint and helping to extend the shoulder joint. The name triceps refers to the fact that this muscle has three origins.

The scapula's infraglenoid tubercle is the source of the long head. In the humerus, the lateral head develops from above the radial Grove. In the humerus, the medial head develops from below the radial grove.

The triceps body is formed when these heads come together, and it is placed as the triceps tendon in the ulna's olecranon process, right beyond the elbow. The elbow joint extends as a result of this muscle contracting.

Therefore, Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.

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Define Photosynthesis and include chemical equation

pls help I’m not sure how to phrase it!!

Answers

Answer:

Photosynthesis is the process whereas plants convert light energy into chemical energy, through cellular respiration. That can later fuel the organism's activity.

Equation: 6CO2 + 6H2O → C6H12O6 + 6O2

Explanation:

Answer:

Hey there,

Photosynthesis means,

The process of using carbon dioxide and water as raw materials to produce food with the help of light energy in the chlorophyll areas of the plant.

The chemical equation is attached to the picture.

Hope this helps you.

Let me know if you have any other questions :-)

WRITE THE EVOLUTION ARIES OF MICROSCOPE WITH SUPPORTIVE INOVATIVE SCIENTIST.

Answers

Answer:

12345678910

Explanation:

trust me brooo

Maple seeds spread so that new maple trees can grow.
Which way will these seeds most likely spread?

Answers

Answer:

Maple seeds travel on the wind by using their wings. The uneaten seeds will germinate some distance from the parent plant.

Hope it helps.

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Maple seeds are considered to be wind-pollinated.

These are very light seeds so they can easily transport by wind.

What is the feature of seeds to disperse through winds?Lightweight.Silky hair.Wings. Seeds of plants like cotton, poppy and drumstick are dispersed by wind. Wind dispersed seeds have special adaptations which make their dispersal easier. They are light in weight. Some have wings that help them fly long distances.

What are the methods through which dispersal of seeds take place?

There are five main modes of seed dispersal:

Gravity, Wind, Ballistic,Water, Animals.

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Which of these options is not a mechanism to control the opening and closing of ion
channels?
a) ATP binding (ATP gated)
b) Ligand binding (ligand gated)
c) Changes in membrane potential (voltage gated)
d) Distortion of the cell membrane (mechanically gated)

Answers

Answer:

D) ATP binding (ATP gated)

Explanation:

There are three types of ion gated channel regulated by ligand binding, change in membrane potential and distortion of the cell membrane...

So the answer is ATP Binding( ATP gated) is not a mechanism to control opening and closing of Ion channels.

ATP binding (ATP gated) IS NOT a mechanism to control the opening and closing of ion channels (Option a).

ATP-gated channels are membrane channel proteins that open in response to binding ATP.

These channels require energy in the form of ATP to open and thus allow the passage of ions/molecules across biological membranes.

For example, the P2X7 receptor is an ATP-gated channel that mediates apoptosis (programmed cell death) of immune cells.

In conclusion, ATP binding (ATP gated) IS NOT a mechanism to control the opening and closing of ion channels (Option a).

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Please hurry this is over due!

If you are correct I will give you all the points I possibly can and brainiest!

Which of these is NOT true about the outer core?

A) It is mostly made up of iron and nickel.

B) It is mostly liquid.

C) It has a higher temperature than the inner core.

D) Atoms within it form a powerful magnetic field.

Answers

Answer:

C. It has a higher temperature than the inner core

Explanation:

The inner core is higher in temperature then the outer core.

How would a cell make a protein that would go into the cell membrane?

Answers

Explanation:

Many proteins can move within the plasma membrane through a process called membrane diffusion.

This concept of membrane-bound proteins that can travel within the membrane is called the fluid-mosaic model of the cell membrane.

Which of the following objects will float in water based on there density?
Hint: density of water is 1 g/cm3

Lithium 0.534 g/cm3
Coal 1.1 g/cm3
Magnesium 1.7 g/cm3
Uranium 18.7 g/cm3

Answers

Answer:lithium

Explanation:

The density of lithium is smaller than that of water.

is coloration an important factor in successful predation? Why?​

Answers

Answer:

Yes and No....

Explanation:

Because color determines whether or not the predator will see its prey since the prey might be able to camouflage into it's surroundings.

So I guess this helps-hopefully-uh hope you have a good day bro-

The ________ plate method involves spreading an inoculum onto the surface of a plate in a pattern that results in isolated colonies in some areas of the plate after incubation, whereas the ________ plate method involves diluting an inoculum into several melted agar tubes and then adding their contents into plates for solidification and incubation.

Answers

Answer:

Streak, pour.

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