Please help please help please help please help please help please help please help please help please help please help please help please help please help please help
Answers
Answer:
It allows the cell to regulate the movement of materials into and out of the cell
Explanation:
This molecule is a saturated fatty acid. The cell membrane is made up of a phosphate head and three fatty acid tails that form a lipid bilayer arrangement.
This lipid bilayer regulates the entry and exit of substances into and out of the cell. Small non-polar molecules, like oxygen and carbon dioxide, are soluble in the lipid bilayer and can easily cross the plasma membrane. Small uncharged polar molecules, like water, can pass through the membrane by osmosis. Larger molecules such as glucose, or charged molecules like ions, require active transport to be passed across the cell membrane.
Answer:
It allows the cell to regulate the movement of materials into and out of the cell
Explanation:
Related Questions
All of the following statements are true about enzymes, EXCEPT
A)They are biological catalysts.
B)They lower the amount of activation energy needed for a reaction.
C)They bind with the substrate.
D)They can be used only once.
Answers
Lipids are...
A. Protein molecules
B. Similar to water molecules
C. Polar molecules
D. Nonpolar molecules
Answers
Answer:
The answer you are looking for is D.
Explanation:
Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. (non- polar molecules)
Lipids are fat molecules and are hydrophobic (water repulsive) in nature. Thus, option D is correct.
What are Lipids?Lipids are important biomolecules and are widely distributed in biological systems. Lipids are organic macromolecules.
Lipids are insoluble in water (polar) and require non-polar solvents mainly hydrocarbons for dissolution like petroleum, ether etc. Thus, non-polar in nature.
Lipids include array of molecules like fats, wax, steroids, vitamins (fat-soluble; A,D, E and K), hormones, oils etc and have diversified functions.
Lipids form an integral part of the cell membrane. It also surrounds membranous structures. It protects the cellular membranes by creating an insulating layer.
Lipids are essential for storing and conserving energy in mammalian body. It helps in metabolism of glucose by converting extra glucose to glycogen in adipose tissues.
Lipids also act as transport molecules in the body. Many lipids function as chemical messengers.
Therefore, Lipids play a pivotal role in living system.
Learn more about Lipids, here:
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Lots of hydroxides (OH) will make a solution
A.acidic B. Basic C. Neutral
Answers
Answer:
B. Basic
Explanation:
Hydroxide (OH) is an anion with the chemical formula OH-. As the formula implies, it consists of an oxygen atom and a hydrogen atom. The more electronegative oxygen atom shares electrons with the less electronegative hydrogen atom via covalent bonding.
Hydroxide ion dissolves in water to form a very strong base, hence, an aqueous solution that contains lots of hydroxides will be BASIC or ALKALINE. A solution with lots of hydroxide ions is a STRONG BASE.
In what type of climate do trees produce narrower rings?
cool and dry
warm and wet
cool and wet
warm and dry
Answers
Answer:
Cool and dry
Explanation: Trees tend to be sensitive to climates, so when the conditions are good the trees grows faster which results in wider growth rings and in poor conditions the tree grows slower which results in it laying down less tissue and therefore a narrower ring size. Drought and a blizzard can also cause narrower ring too. Actually, a cool way to find out if the climate conditions were good is to measure the rings of a tree every month each year. If the rings were consistently the same then you know the climate stayed pretty much the same and etc.
pleasssssse helpppppp!
Answers
Which of the following is true about elements?
A.
Elements combine to form compounds in nonliving substances but not in organisms.
B.
Elements combine to form compounds in organisms but not in nonliving substances.
C.
Elements do not combine to form compounds.
D.
Elements combine to form compounds in organisms and nonliving substances.
Answers
Answer:
I believe the answer is D or B.
Explanation:
Answer:
D
Explanation:
study island
You are discussing earthquakes with your friends. One friend states that a magnitude 8.0 earthquake is twice as powerful as a 4.0 magnitude earthquake. Another friend states that it is actually 40 times more powerful. Another friend claims that it is 10,000 times more powerful. Which friend is more correct? Explain.
Answers
Answer:
The friend that says 8.0 is twice as powerful as a 4.0. Hope this helps
When reading, what should you look for first?
Answers
The correct answer is :you should look first to the answers to your own questions.
ANSWER FAST AND THIS IS NOT A HIGHSCHOOL THING IT IS MIDDLE SCHOOL <3
Which example is ONE specific form of simple diffusion?
A: If water moves into a cell by osmosis, it is moving into an area of higher solute concentration.
B: If water moves into a cell by diffusion, it is moving from an area of higher concentration to an area of lower concentration.
C: If water moves into a cell by osmosis, it is moving into an area of higher water concentration.
D: If water moves into a cell by diffusion, it is moving into an area of higher solute concentration.
Answers
Answer:
c
Explanation:
2. If you cannot see most cells with just your eyes, how can you see a unicellular organism?
Answers
Answer:
Microscope
Explanation:
Answer:
microscope
Explanation:
What is a hypertonic, hypotonic, and isotonic solution?
Answers
Answer:
Explanation:
If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, the relative concentrations of solute and water are equal on both sides of the membrane. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.
2. Examine the arm bones of the two skeletons. Was Grandmother right- or left-handed? How
about Grandfather?
Answers
Answer:
Grandmother was Left-handed
Explanation:
I can tell this because she had thicker upper and lower arm bones on her left arm, compared to her right arm, telling me her left arm was dominant.
What causes cells to become specialized??? ✨
Answers
Answer:
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.
Explanation:
Hope that helped if it did please give me brainiest Thanks :3 <333333
If climate change increases the overall temperature of the earth, glaciers can melt
into the ocean. If that happens, what would be the spheres involved?
A. cryosphere and hydrosphere
B. geosphere and atmosphere
C. cryosphere and biosphere
D. hydrosphere and atmosphere
Answers
The climate change increases the overall temperature of the earth, glaciers can melt into the ocean. The spheres involved cryosphere and hydrosphere. Thus option A is correct.
What is cryosphere?Cryosphere is defined as solid precipitation, snow, sea ice, lake and river ice, icebergs, glaciers and ice caps, ice sheets, ice shelves, , and seasonally frozen ground are all components of the Earth's climatic system.
It can also be defined as the area of the earth's surface marked by the presence of water.
Hydrosphere is defined as the total mass of water on, beneath, and above the surface of a planet, minor planet, or natural satellite.
It can also be defined as the component of the Earth made up of all liquid water.
There are basically three types of hydrosphere.
LiquidVaporIceClimate change is defined as the long-term temperature and weather pattern shifts These changes could be natural, such as oscillations in the solar cycle.
Thus, the climate change increases the overall temperature of the earth, glaciers can melt into the ocean. The spheres involved cryosphere and hydrosphere. Thus option A is correct.
To learn more more about cryosphere, refer to the link below:
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Dr. Naskrecki believes that scientists will eventually identify between 50,000 and 100,000 species in
Gorongosa National Park. Why do you think he suspects there are so many more than the 2,829
species they have already identified living in the park?
Answers
Answer:
The reason why Dr Naskrecki thinks he suspects there are so many more than the 2,829 species they have already identified living in the park is because there are many species that has been identified in the world because humans haven’t gotten to most parts of the earth which makes it a lot undiscoverable.
Another one is that the species multiply rapidly and easily.
What is the term that scientists use when comparing the properties of solids liquids and gases
Answers
Answer:
The State of Matter
Explanation:
Cytoskeleton has 3 functions?
Genetic information, color, movement
Gives cells their specific shape, severs as tracks, enables movement
It has NO function
Energy, shape and color
Answers
Answer:
I believe the answer is gives cells their specific shape, severs as tracks, enables movement
Explain why grease on clothing will not come out with water alone.
Answers
Answer:
It forms water proof barriers so its insoluble in water
A mixture can be separated by all of the following EXCEPT
Filtration
Distillation
Sieving
A magnet
Evaporation
All are methods to separate mixtures
Answers
Answer:
All are methods to separate mixtures
Explanation:
A mixture consists of 2 or more substances that are mixed physically but not chemically. Hence, mixtures can be separated by any physical separation means which include but not limited to filtration, distillation, sieving, magnetization, and evaporation.
Filtration is usually used to separate suspended particles in a liquid using a membrane of a filter paper. Distillation is used to separate miscible liquids with varying boiling points by evaporating and condensing them back at their respective boiling points. Sieving is used to separate mixtures with varying particle sizes of individual components.
Magnetization is usually used to separate mixtures with, at least, one component with magnetic property. Evaporation is used to separate dissolved solids from liquids.
Hence, all the methods listed are used to separate mixtures.
6.) A dog named Rascal leaves his home and travels a short distance and
then returns home. The graph shows his position as a function of time.
How does his velocity on his return trip compare to his velocity for the
first 5 seconds?
Answers
Answer:
If your on USA testprep then the correct answer is D !
Explanation:
Answer:
THE CORRECT ANSWER IS: His velocity on the return trip was twice as fast when compared to the first 5 seconds.
Explanation:
Gim kit
Select all of the arrows in the model that represent the movement of nitrogen from an abiotic system to a biotic system.
Answers
Answer:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
Explanation:
This model in the image section is portraying the nitrogen cycle, which involves the transfer of nitrogen within biosphere, atmosphere, and lithosphere etc. The abiotic components of this model are the non-living parts while the biotic components are the living parts.
In this model, the movement of nitrogen from abiotic or non-living component of an ecosystem to the biotic or living component is as follows:
Nitrogen compounds in the soil ---> Plants
Nitrogen compounds in the soil ---> Denitrification bacteria (convert nitrogen compounds to N2)
Nitrogen in the atmosphere ---> Nitrogen fixing bacteria (convert N2 to nitrogen compounds)
Which type(s) of muscle tissue cells are organized into sarcomeres?
skeletal
cardiac
smooth
Answers
what is crop fallowing?
Please reply fast I need to do my biology assignment !!!
Answers
Answer: A field, or several fields, are taken out of crop rotation for a specific period of time, usually one to five years, depending on crop. Fallowing soil is a method of sustainable land management that has been used by farmers for centuries in regions of the Mediterranean, North Africa, Asia and other places.
Explanation:
Which four nutrients cycle through all of Earth's spheres and organisms?
Answers
Answer:
water, carbon, nitrogen, phosphorus, and sulfur cycles.
Explanation:
Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.
Peter loves music. He believes that he does his homework better and faster when he listens to music. His parents say that music is distracting when studying.
a. What is the problem?
Answers
Answer:
I think the problem is that Peter is not studying; he is doing his homework.
Studying means he is preparing for a test and learning something. Homework is something you already know.
Helpp kinda confused :( and thxxx ")
Answers
The lytic and the lysogenic cycles are the two methods that bacteriophages reproduce. They both begin with a bacterium that has been infected with bacteriophage DNA.
Lytic:
The phage DNA reinstructs ribosomes and the bacterium begins producing many bacteriophages.The bacterium eventually lyses and releases the bacteriophages into the environmentLysogenic:
The phage DNA is incorporated into the bacterium's chromosome.The bacterium eventually duplicates this DNA when it undergoes fission, producing two infected daughter cells.Eventually, the phage DNA will be read by the bacterium and it will go into the lytic cycle, described above.To sum it up, the lytic cycle ends the bacterium's life by producing offspring, yet the lysogenic cycle allows for multiple bacteria to divide and eventually undergo the lytic cycle.
What is a gene? What is its purpose?
I
Answers
Chad drew a diagram to compare animal cells and bacterial cells.
Which label belongs in the area marked X?
nucleus
DNA
cell wall
ribosomes
Answers
Answer:
It’s nucleus
Explanation:
have a good day;)
Answer:
1, nucleus.
Explanation:
Explain whether continuing to increase light intensity will increase the rate of photosynthesis. Please help!
Answers
Answer:
So in the case of a plant, a higher light intensity means more packets of light called “photons” are hitting the leaves. As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.
Explanation:
If you continue to increase the intensity of light that a plant receives, what happens? The rate of photosynthesis increases with light intensity. The rate of photosynthesis decreases with light intensity. The rate of photosynthesis increases and then levels off.As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. This indicates that the rate of photosynthesis increases with light intensity.
a student needs to find the density of a cube. each side of the cube measures 3 cm and the mass of the cube is 12g. what is the approximate density of the cube?
A. 0.4g/cm3
B. 2.25g/cm3
C. 4.0g/cm3
D. 36g/cm3
Answers
Answer:
Density = 0.4g/cm³
Explanation:
Given
Mass = 12 g
Length = 3 cm
Required
Determine the density.
To calculate density, we need volume.
Volume of a cube is:
Volume = Length ³
Hence:
Volume = (3cm)³
Volume = 27cm³
Density = Mass/Volume
Density = 12/27
Density = 0.4g/cm³ --- Approximated