please answer this for me

Answer:  The mechanical advantage of a machine is 4. ... ... So MA = 4 means that for example if you apply 100 N then your machine will multiply that force and generate 400 N.

Explanation:

Answer:

d

Explanation:

Answer:

Explanation:

It changes as new evidence is found.

An example is the scientific knowledge of climate change. This scientific knowledge is not agreeable across all the world scientists. However as more and more evidence is collected, over time, the understanding of climate change will change and will either refute or corroborate the earlier understanding.

Answer:

The cytoplasm is a jelly like substance that supports and suspends organelles and molecules inside the cell. It also helps move and dissolve materials throughout the cell including waste molecules, proteins, and hormones.

I hope this helps! I tried to keep it short and simple. :)

Answer:

All the flowers would be the same color. I am basing this under the assumption the capital Y means dominant in your homework. I think its 1:1:1:1 as a ratio

Explanation:

Answer:

Since electromagnet waves do not need a medium they can travel through space. Sound waves can't travel through space because they need a medium.

Explanation:

The satellite uses electromagnetic waves instead of sound waves these types of waves do not require any medium for the transmission of the information.

The types of electromagnetic waves that are used by satellites are known as radio waves. These waves are utilized in order to carry out satellite signals with a speed of 3000,000km/sec.

Electromagnetic waves facilitate the required amount of speed and characteristics which ease the transmission of information required by the satellites. Radio waves are traveling through the vacuum of space with the fastest speed at which the information via the satellite can be transmitted. Radiowaves are also used for spacecraft communications as well.

Therefore, the satellite uses electromagnetic waves instead of sound waves these types of waves do not require any medium for the transmission of the information.

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Answer:

I think it would be a "Waxing Crescent"

Explanation: I said this because this is the Moon phase that we see almost everyday; if I'm correct.                        

Let me know if it's right or wrong...

Answer: B

Explanation: Because the Red shows activity

Activation energy is defined as the minimum amount of energy required for activating the atoms or molecules to undergo chemical transportation or transfer.

The correct answer is:

Option D. The letter A.

In the graph, activation energy can be explained as:

1. The activation energy is the minimal amount of energy necessary for the compounds to participate in the chemical reaction.

2. In the graph, the activation energy without the enzyme is represented by A,  the activation of energy with enzyme is represented by B, and the change in the free energy is represented by C.

Thus, the correct answer is Option D.

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Answer:C

Explanation:

Answer: C. Living things and the environment

Explanation: It's correct!

Answer:

Blood would not pump fast enough to the rest of our bodies.

Explanation:

Answer:

A fundamental task of proteins is to act as enzymes—catalysts that increase the rate of virtually all the chemical reactions within cells. Although RNAs are capable of catalyzing some reactions, most biological reactions are catalyzed by proteins.

Explanation:

Enzymes perform the critical task of lowering a reaction's activation energy—that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily

Answer:

Explanation:

chloroplasts

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

Answer:

the reaction to carbon dioxide and water to produce sugar, as well as oxygen.

The complete reaction for photosynthesis is:

Carbon Dioxide + Water + Light → Glucose (Sugar) + Oxygen

Answer: I think it's phospholipid bilayer

Explanation:

Im sorry if that is wrong.

According to the American Humane Society, roughly 95% of all cats are short hair cats (called domestic shorthair). This applies not just to strays but cats that have owners as well. So that fact alone is enough to be able to see why most strays are short hair cats.

Through my research, I'm reading that some people claim that long hair cats are more expensive and rare cats, so the owner is likely to take better care of them and keep them indoors. This further inflates the percentage of stray short hair cats out on the street. I couldn't find much about this from an official source, but instead just through forum posts.

As for the colors, I'm not entirely sure. The cat's fur color comes from its genetics. So it's possible that darker more earth-tone colors help the animal survive better compared to say a lighter color or white fur. Due to natural selection and survival of the fittest, the darker hair color cats will eventually out-number the lighter fur colors. That's my theory anyway. I couldn't find much data or studies to back that up.

Answer: the second one

Explanation:

Because a food web describes how different organisms eat different things

Answer:

A. Observation

Explanation:

To follow the scientific process you must first observe what phenomena you want to study, then you can make a hypothesis. The other options are not part of the scientific process.

Answer:

Strains of bacteria can become immune to antibiotics that once killed them effectively

Explanation:

its not in my words

Given parameters:

Number of lizards  = 150 lizards

Area of the study = 25km²

Unknown:

Population density = ?

Solution:

Population density refers to the number of organisms per area in a particular location.

Mathematically;

     Population density  = [tex]\frac{Total Population}{Area}[/tex]  

    Population density  = [tex]\frac{150}{25}[/tex]   = 6lizards/km²

The population density of the study area is  6lizards/km²

Answer: A fundamental task of proteins is to act as enzymes—catalysts that increase the rate of virtually all the chemical reactions within cells.

Explanation:i had a project on this

Answer:

Enzymes are a type of protein found within a cell.

Explanation:

Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.

Answer:

In a solid, the molecules are tightly packed in neat rows and they vibrate quickly. Solids have a definite shape and volume. In a liquid, the molecules have more energy and they move around more freely. Liquids have a definite volume but they don't have a definite shape. The molecules in gases are spread apart and move very freely with very much energy. Gases do not have a definite shape or volume.

Hope this helps!

:)

The description of the arrangement of water molecules and their motion in a solid, liquid and gas form and how they differ in each form is as follows:

Solid state is characterized because the molecules that compose it are very close together by a network of covalent bonds and in more or less fixed positions; this makes the distance between the particles practically unchanged.

This is due to the fact that the attractive forces are very intense and the particles are only free to carry out small vibrations and that is why solids have constant shape and volume.

In the liquid state, the forces between the particles are weaker than in the solid state, which allows the particles to have some freedom of rotation and translation, due to mobile ions.

Besides the vibration; they can slide over each other and maintain a constant mean distance between them without being fixed.

For this reason, liquids, unlike solids, take variable forms, depending on the container that contains them and they can also flow easily.

Their similarity to solids is based on the fact that, like the solids, they are difficult to compress and have constant volume.

In the gaseous state the attractive forces are practically zero and the particles acquire a total mobility of vibration, rotation and translation,

Being the distance between the molecules much greater than the one that they have in solid or liquid state and, in addition, variable at all times.

Gases, unlike solids and liquids, can be easily compressed or expanded and also take the shape of the container that contains them, occupying the entire available volume.

Therefore, the intensities of the interactions or cohesion forces of water molecules are not the same in solids, liquids and gases, the effects of movement and interaction on the arrangement of the particles are opposed, resulting in different states of aggregation.

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Explanation:

Adenine always pairs with thyamine or uracil also.

Cytosine always pairs with guanine

Hope this helps!!

Answer:

first one is thyamine

the second one is guanine

Explanation:

Answer:

C. Guanine

Explanation:

A pairs together with T, or U in RNA,

and C and G always pair together.

Answer:

The answer is C. Guanine

Explanation:

Pyrimidines always bond with purines.  Since Cytosine is a pyrimidine, it must bind with a purine, which can either be Adenine or Guanine.  However, Adenine has only 2 places for hydrogen bonding while Guanine has 3.  Since Cytosine also has 3, it would bind to Guanine.  GCAT is a useful acronym for remembering which binds to which.

Answer:Guinea pigs get have of their traits from mom and half from dad. Some traits are recessive some are dominant