Do cell walls manage the movement of all substances into and out of the cell?
Which of these is an important part of the scientific process?
A. Observation
B. Nationality
C. Phrenology
D. Religion
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.
how do fertilizers affect the nitrogen and phosphorus cycle ?
Answer:
Explanation:
Explanation: Many fertilizers are phosphate-based and this accumulates in the soil (and enters waterways), affecting the phosphorus cycle in multiple ways. When phosphate-based fertilizers are used, they potentially enter the soil and water through run-off.
2. Why must the satellite use electromagnetic
waves instead of sound waves?
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.
What types of electromagnetic waves are used by Satellites?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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describe the arrangement of water molecules in a solid, liquid and gas form. how does the movement of the molecules differ in each form? Describe the bonds when the molecules are in motion.
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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Which is the best description of what is making the Earth warmer?
Explain how dysfunction at one level of organization impacts other levels and provide an example.
Answer:
Please find the explanation below
Explanation:
All living organisms are made up of four level of organizations namely: cell, tissue, organs, organ system and ultimately, the organism. These levels of organization are interrelated in such a way that CELLS accumulate to form TISSUE, TISSUES accumulate to form ORGAN, ORGANS accumulate to form ORGAN SYSTEM.
Since one level is dependent on a lower level, a dysfunction in one level will cause the dysfunction of another level. For example, a dysfunction in LIVER CELLS will cause the LIVER TISSUES formed from the cells to be dysfunctional. This dysfunctionality will extend to the LIVER as an organ and cause issues in the EXCRETORY SYSTEM (an organ system that constitutes the liver organ).
What is a food web?
A food web shows different animals that exist in an ecosystem
A food web shows different food chains that exist within an ecosystem
A food web shows the transfer of energy between living things
Answer: the second one
Explanation:
Because a food web describes how different organisms eat different things
If a hurricane was to hit Jacksonville during which Moon phase would
we most likely experience the most damage? Describe the factors that
are involved in order to develop an answer.
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...
What’s the complete reaction for photosynthesis
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
Hey guys. So I need your help I have this rock presentation assignment worth 90 points and I have to find a good title. It’s about sample rocks granite sandstone and Phyllite. All from sedimentary igneous and metamorphic please help me find the right title! Thank you. (science)
Answer:
stone is stone , the most beautiful stone it is right I think
Why are most stray cats short hair cats, but a variety of colors?
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.
A wildlife biologist and her team counted 150 lizards in a 25 km area. What is the population density
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
Which of the following is the best example of evolution occurring? (5 points)
Answer:
Strains of bacteria can become immune to antibiotics that once killed them effectively
Explanation:
its not in my words
HELPP!! Describe how the enzyme transforms the substrate. Include in your answer the vocabulary terms: substrate, active site, enzyme, product(s).
help me pleaseeee Cell membranes of all cells are composed of
Nucleic Acids
Carbohydrates
Lipids
O Proteins
Answer:
Okay, I got this from google and my notes but the cells inside of a cell membrane are composed primarily of fatty-acid-based lipids and proteins.
Explanation:
Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). These membranes are composed primarily of phospholipids and proteins and are typically described as phospholipid bi-layers. They also contain cholesterol in the phospholipid bilayer.
use uterus and vagina in the same sentece
Complete the sentences to describe how nitrogen bases pair up in DNA.
Adenine always pairs with
Cytosine always pairs with
.
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:
If you are on the top a mountain and drop an apple, it
will fall to the ground, even though the apple is
gravitationally attracted to you. Why?
a)Earth is larger and has a much stronger
gravitational pull
b) Apples always fall down
C) Centrifugal forces pull the apple to the Earth
and that is stronger than your gravitational pull
d) None of these
What gas is CREATED during photosynthesis?
Carbon Monoxide
Carbon Dioxide
o
Water
O Oxygen
How do blood glucose levels increase in the body?
11. Which part of a plant cell contains chlorophyll?
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.
Mrs. Cobble has two guinea pigs, one black male and one white female. They 2 white babies
and 5 black babies. Why?
Answer:Guinea pigs get have of their traits from mom and half from dad. Some traits are recessive some are dominant
Observe: Click Next. What happens in the cytoplasm?
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. :)
Which is true about scientific knowledge?
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.
The human body is composed of cells, organs, organ systems, and tissues. How are these organized?
A) Groups of cells form tissues.
B) Groups of organs form tissues.
C) Groups of organ systems form tissues.
D) Groups of tissues form organ systems.
PLZ HELP
Answer:
C) Groups of organ systems form tissues.
Explanation:
in the cell, enzymes act as what?
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.
help.. ............. ....m
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:
Which letter in the image above represents the activation energy of a reaction
WITHOUT an enzyme present?
C
B
A & B
A
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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a two-layered arrangement of phosphate and lipid molecules that form a cell membrane, the hydrophobic lipid ends facing inward and the hydrophilic phosphate ends facing outward.
concentration gradient
passive transport
prokaryotic cell
phospholipid bilayer
Answer: I think it's phospholipid bilayer
Explanation:
Im sorry if that is wrong.