Question 13 of 34
Which of the following is a type of polar attraction?
A A metalic bond
8. A hydrogen bond
C. An ionic bond
A covent bond

Answer:

A.

Explanation:

A. Rust forming

is a example of a chemical change

Hope this helped you!!

Answer:

RUST FORMING

Explanation:

because it takes the chemical h2o to form rust

Answer: A or C

Explanation: I just did it

Answer:

Hey mate....

Explanation:

This is ur answer...

Talk about how plants and animals affect other things and give some examples e.g. squirrels bury acorns to save for winter annd some of them grow into oak trees, litter gets washes into storm drains into the ocean and affects wildife, spraying for mosquitoes kills honey bees that pollinate the flowers of apple trees etc...

Hope it helps!

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Answer:

A

Explanation:

It is about planets and planets are in space.

Answer:

It will take 1.85 hours to walk 12 km north.

Answer:

Explanation:

v=[tex]\frac{d}{t}[/tex]

and the d here is the distance which is equal 12 km

the time is still unknown

and we know the velocity which is 6.5 km/h

and according to the triangle of the velocity "search that up "

t =[tex]\frac{d}{v}[/tex]= [tex]\frac{12}{6.5}[/tex]≈1.8 hours

Answer:

Ok I will help you what is the problem

Explanation:

Answer:

The answer is Beryllium

Answer:

q1 : ribosomes because they are responsible for protein synthesis

q2 : by transporting potassium ions into the cell and sodium ions out of the cell maintaining a concentration gradient

q3 : seawater contains a high concentration of sodium and chlorine ions that the Atlantic cod gets rid of by actively transporting them out of its body

B, denaturing. Denaturing is the process in which proteins lose their native fold. The native fold is what gives each amino-acid sequence chain their function.

Answer:

1st one

Explanation:

DNA replace the old cells

Answer:

cellular respiration

Explanation:

I did the test-

C. cellular respiration

Explanation: Becuase yes.

* I got the quiz*

Answer:

There would be more conservation of energy if human beings it only meat.  

Explanation:

this is because meat consists of a significant portion of the fat. The amount of of energy that is liberated per molecule of fat is almost twice the amount of energy that is liberated by carbohydrate or protein. As a result of this the total energy consumption will be more if human being consumes only fat. however it takes more time to digest fat as compared to that of carbohydrate and protein.

Answer:

There would be more conservation of energy if human beings it only meat.

Explanation:

This is because meat consists of a significant portion of the fat. The amount of energy that is liberated per molecule of fat is almost twice the amount of energy that is liberated by carbohydrates or protein.

As a result of this the total energy consumption will be more if human being consumes only fat. However, it takes more time to digest fat as compared to that of carbohydrates and protein.

Answer:

itrequires genetic material (DNA) from two parents. The parent plants have male and female sex cells, called gametes. ... Seeds produced through fertilization contain genetic material from both parents.

The production of a seed by a flower is an example of sexual reproduction because it involves the fusion of male and female gametes (pollen and ovules) to form a genetically diverse offspring.

Sexual reproduction is a type of reproductive process that involves the combination of genetic material from two parent organisms, resulting in the formation of genetically diverse offspring. In the case of a flower producing a seed, sexual reproduction occurs through a series of specialized reproductive structures and processes.

Male Gamete Production (Pollen): Flowers produce male gametes, or pollen, in structures called anthers. Pollen contains the male reproductive cells necessary for fertilization. When pollen is mature, it is released from the anthers.

Female Gamete Production (Ovules): Flowers also produce female gametes, or ovules, within the ovary. Each ovule contains an egg cell, which is the female reproductive cell. The ovary is located at the base of the flower.

Pollination: Pollination is the process by which pollen from the male reproductive structures (anthers) is transferred to the female reproductive structures (stigma) of the same or a different flower. This can occur through wind, water, insects, birds, or other means.

Fertilization: Once pollen lands on the stigma of a compatible flower, it forms a pollen tube that grows down into the ovary. This tube delivers the male gametes to the ovules, where fertilization occurs. Fertilization is the fusion of a male gamete with a female gamete to form a zygote, which develops into an embryo within the seed.

Seed Formation: After fertilization, the ovule develops into a seed, which contains the embryo, endosperm, and protective seed coat. The embryo carries genetic information from both parent plants, resulting in genetic diversity.

The combination of genetic material from male and female parent plants results in offspring with unique genetic characteristics. This genetic diversity is advantageous for the survival and adaptation of species to changing environments. Therefore, the production of a seed by a flower is a prime example of sexual reproduction, involving the fusion of gametes to create genetically diverse offspring with traits inherited from both parents.

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Answer:

As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.

Answer:

Sliding of the filaments and shortening

Explanation:

As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.

PLS MARK BRAINLIEST

Answer:

I'm pretty sure the answer is D.) Less Dense

Explanation:

Answer:

d) less dense

Explanation:

When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.

Answer:

sorry dont no what u say

so bye

Given the illustration shown in the image attached to this answer, water molecules will move from B to A.

Osmosis is defined as the movement of water molecules across a semi - permeable membrane from a region of higher concentration to a region of lower concentration. Osmosis usually occurs across the cell membrane.

The cell membrane is an example of a semi - permeable membrane. Hence, water moves from B where it is at a higher concentration to A where it is at a lower concentration according to the definition of osmosis.

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Answer:

HIV is the virus that causes Aids

last stage is Full blown stage

Answer:Two kinds of organisms can do alcohol fermentation: bacteria and yeast (yeast, by the way, are fungi). Humans “use” alcohol fermentation in another way, co-opting it to make bread, beer, and wine.

Explanation: i took the test

Answer:

Every amino acid comprises a hydrogen atom, a carboxyl group, an alpha-amino group and also the R-group (which makes the side chain). The side chain present in every amino acid is different. Therefore, the only primary factor that makes each amino acid different is the presence of R-group.

Explanation:

Maybe this will help..

Answer:

I think due to absence of ATP but I'm not sure.. Actin and myosin return to their unbound state causing the muscle to relax. Alternatively relaxation (failure) will also occur when ATP is no longer available.

Myosin heads are ready to bind with the actin filament they are not able to bind due to the absence of ATP.

Muscle contraction results from an intercommunication between the actin and myosin filaments which generate movement relative to one another.

Myosin movement appear to be a kind of molecular hop. The myosin reaches forward, binds to actin, contracts, releases actin, and then reaches forward again to bind actin in a new cycle.

Relaxation occurs when nerve stimulation stops. Calcium gets moved back into the sarcoplasmic reticulum shattering the link between actin and myosin. Actin and myosin then return to their unbound state causing the muscle to relax.

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Answer:

I think answer is liquid vesicles concentration was 0.3 mg/ ml

Answer:

Nitrogen-fixing bacteria convert nitrogen gas from air into a form that plants can use to make proteins. Free-living nitrogen-fixing bacteria are also found in the soil. When they die the nitrogen they have fixed into their biomass is converted into ammonium. 2.

Explanation:

Answer:

It combines genes from two different organisms.

The best explanation for the change in the egg's size is that Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell. Option B.

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When talking about solutions, we can classify them as follows,

Water is considered to be a hypotonic solution.

When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.  

Note: In this example, the egg is the cell.

Osmosis is the phenomenon that occurs when two dilutions of different concentrations -in this example, the interior of the cell and the solution- are separated by a semipermeable membrane.

The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.  

Water tends to go from the hypotonic solution to the cell interior and keeps doing so until concentrations are equal in the cell interior and exterior.

As water enters the cell, the cell begins to enlarge and becomes bigger-sized. And because cells can not limit the amount of water moving in, it keeps swelling until the membrane can not stretch anymore, and lysis occurs. It bursts.  

What we need to consider is

So, the best explanation for the change in the egg's size is Water moved into the cell by osmosis because the solute concentration was higher inside the cell than outside the cell. Option B.

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Answer:

43

Explanation:

Because we need to multiply the product