Answer:The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
The cell membrane is a dynamic selectively permeable structure.
What is the cell membrane?
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it maintains a constant environment inside the cell, and that membrane serves a variety of purposes.
One is to move compounds out of the cell that is harmful as well as nutrients into the cell. Another is that there will be proteins on the cell's membrane, which is its plasma membrane, that interact with other cells.
These proteins may be lipid proteins, which include both a protein and a fatty acid, or they may be glycoproteins, which contain both a protein and a sugar moiety. Additionally, those proteins that adhere outside of the plasma membrane enable cell-to-cell communication.
Additionally, a cell's membrane offers some structural support. Additionally, various cell types have different types of plasma membranes, and the lipid component of the plasma membrane generally contains a lot of cholesterol. This is distinct from a few other membranes inside the cell. There are several plants and microorganisms, such as bacteria and algae, that have various defense systems.
Therefore, the cell membrane is selectively permeable with a variety of functions.
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Dinosaurs became extinct hundreds of millions of years ago. Scientists have been trying to determine the cause of the extinction. There have been many different claims about how dinosaurs disappeared.
Which best explains why there could be more than one claim about the disappearance of the dinosaurs?
All the claims can be validated through experimentation.
Data results can be interpreted in different ways.
Political groups have influence on what scientists say.
The different scientists are not experts in the field.
Answer:
Its B
Explanation:
got it right on the test
can you name this stuff
Answer:
scale , theometer , microscope
sit, nest test
Explanation:
Which of these describes the field of engineering ?
A. It’s is a tool or process designed to solve a problem.
B. It is a the use of science and math to solve math problems.
C. It’s an area of study that relate to space exploration.
D. It is an area of study that relates to non living materials.
Answer: b
Explanation: you have to use both math and science in engineering
Test variable (independent variable) The food, pollution, and predators. Outcome variable (dependent variable): The population Control group what is the control group
Answer:
the control group is a regulated species.
Which statement is a scientific law? A Scientists use genes to explain why evolution happens. B Genes are long patterns that are similar to computer codes. C A person’s traits are controlled by different forms of a gene. DThe discovery of genes changed how scientists think about life
D the discovery of genes changed how scientists think about life
Answer:
It could be c because genes are controlled by chromosomes and chromosomes decide traits from parents.
Explanation:
What do you think the distribution of fossil fuels on Earth suggests about what Earth was like millions of years ago? Support your answer with evidence.
Answer: Years ago, when prehistoric animals and plants died, layers of rock and dirt gradually buried them. Over millions of years, heat and pressure from Earth's crust ... that are useful to humans, like fossil fuels, are called natural resources. ... life and provides real-life examples such as scientist have found fossals in museums
Explanation:
The distribution of fossil fuels on Earth suggests that the population was low when compared to now and there was also less technology adopted.
Plants and animals which died millions of years ago were gradually covered
with dust through wind erosion as a result of less technological innovation
such as burying in coffins etc. They were put in tombs which made fossils to
be discovered as a result of direct contact with rocks and soil components.
The population of plants and animals were also lesser than then which is why fossils are sparingly distributed across the world.
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HOW IS THE SKELETAL SYSTEM LIKE AN ENGINE?
Answer:
because your body moves you have muscles that trasform in to bigger ones you digest stuff oyu moveee
Explanation:
HOW IS THE SKELETAL SYSTEM LIKE THE POLES OR ROPES IN A TENT?
Answer:
they both are for stripping
Explanation:
Please hurry Which of these structures are found in both plant and animal cells?
cell wall, mitochondria, ribosomes
mitochondria, ribosomes, vacuoles
vacuoles, chloroplasts, cytoplasm
cytoplasm, cell wall, vacuoles
Answer:
mitochondria, ribosomes, and vacuoles
Explanation:
chloroplasts and cell walls are only found in plants .
though rare, vacuoles are found in animal cells as well as plants .
mitochondria and ribosomes are in both types of cells .
Answer:
ribosomes
Explanation:
8th grade, please help. My creativity is clearly down the drain for this one, i just need one made up question of a scientific hypothesis, so there would be a question and you answer it with the independent variable, dependent variable, and 5 constants. thanks!
Maybe this could be an easy help?
How much more will a bean plant grow with music compared to a bean plant without?
Both plants are in separate rooms, each given the same amount of sunlight, water, and plant food. Each plant also have the same pot and soil. Each are measured every day for a week after sprouting. The plant with music grows on average 2cm more than the plant without each day.
Living organisms are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform. Which of the following lists these levels in the correct order of organization from the simplest to the most complex? A. Cells, tissues, organs, organ systems, organisms B. Organisms, organ systems, organs, tissues, cells C. Tissues, cells, organs, organisms, organ systems D. Organs, organ systems, organisms, cells, tissues
Answer:
A. Cells, tissues, organs, organ systems, organisms
Cells, tissues, organs, organ systems, organisms is the correct order of levels of organization. The correct option is A.
What is level of organization?Biological organization is the reductionistic hierarchy of complex biological structures and systems that define life. The traditional hierarchy basically goes from atoms to biospheres.
These components are organized into levels. Cells, tissue, organs, organ systems, and organisms are the five levels.
Cells are the building blocks of all living things. This is what sets living things apart from other objects.
The organism level is the most advanced level of organization. An organism is a living being with a cellular structure that can perform all physiologic functions required for life on its own.
An organism is organized into four levels: cells, tissues, organs, and organ systems. These levels group complex anatomical structures; this organization creates the components easier to understand.
Thus, the correct option is A as cell is the basic level while organism is the highest level of organization.
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How do you think improving technology to identify locations of fossil fuels could benefit people and the environment?
Answer:
Alternative, renewable energy sources, like wind and solar power, get rid of the pollution that accompanies fossil fuel energy. Alternative energy also reduces the reliance on limited fossil fuels.Explanation:
Improving technology to identify the locations of fossil fuels could benefit people and the environment by saving energy, reducing pollution, and being economically beneficial.
What is the significance of the technology in fossil fuels?Using the technology helps the economy by improving technology, which could lead to the discovery of new fossil fuel reserves, identifying new fossil fuel reserves could help reduce dependence on outside sources of energy, thereby increasing energy security. in this way extraction should be more efficient and less harmful to the environment, such as through the emission of fewer harmful gases during mining.
Hence, improving technology to identify the locations of fossil fuels could benefit people and the environment by saving energy, reducing pollution, and being economically beneficial.
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Which kind of eukaryotic cells use food from outside sources for energy, and what organelle is used for this?
Answer:
Type of cell is plants and the organelles is Mitochondria
Question: What effect does the water temperature have on solution rate? Make a Hypothesis:
Answer:
If I increase the temperature of the water I think it will go faster because the water comes to a boil.
Explanation:
The independent cycles that add to the problem of Global Warming on our planet that can sometimes be measured are called ___________________ ___________________. An example is in the artic how the ice is melting. The melting ice exposes more land and then that land heats up and causes the ice to melt faster than just having the sun hit it.
Earth's long-term warming trend can be seen in this visualization of NASA's global temperature record, which shows how the planet's temperatures are changing over time, compared to a baseline average from 1951 to 1980. The record is shown as a running five-year average.
The frog, toad, and salamander are grouped together because they share all of the following characteristics EXCEPT?
Answer:
Frogs have smooth skin and long limbs. Toads have warty skin and short limbs. Salamanders and newts have long, slender bodies with tails. The four limbs of salamanders and newts are more evenly sized.
Explanation:
How is the function of the Endoplasmic Reticulum similar to a structure in a city?(Give an analogy.)
Explanation:
Rough ER looks like sheets or disks of bumpy membranes while smooth ER looks more like tubes. Rough ER is called rough because it has ribosomes attached to its surface. The double membranes of smooth and rough ER form sacs called cisternae. Smooth ER (SER) acts as a storage organelle.
If you spend a lot of time in the sun, then you will increase your risk of skin cancer. Manipulated variable (Independent Variable): Responding variable(Dependent Variable): Corrected hypothesis:
Answer:
you will get sunburn
Explanation:
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Answer:
The dependent variable (sometimes known as the responding variable) is what is being studied and measured in the experiment
Explanation:
This type of map indicates features of the land like oceans, mountains, and forests by using different colors.
a. Political
b. Economic/Resource
c. Topographic
d. Physical
Answer:
the answer to this question is: Physical Map.
hope this helps!
Explanation: