The plasma membrane, according to the fluid-mosaic model is composed mainly of What and Proteins

Answers

Answer 1
The plasma membrane is an essential component found in almost all living things, few exceptions, and is recognized as a fluid mosaic model, it is primarily composed of Lipids and Proteins.

Related Questions

what form of carbon do plants remove from the air?

Answers

they remove co2 from the air.

Imagine that a chromosome contains the following chromosome order ZYXWVUT. What type of mutation happens to produce ZYXWWVVUT?

Answers

the answer would be a deletion because half the chromosome is now missing

The weather department in Richmond is forecasting a snowstorm. What is likely to happen to the barometer and thermometer readings in Richmond?

A. Barometer readings will decrease, and thermometer readings will increase.
B. Barometer and thermometer readings will increase.
C. Barometer and thermometer readings will decrease.
D. Barometer readings will increase, and thermometer readings will decrease.
E. Barometer and thermometer readings will not change.

Answers

The correct answer is option D. Barometer readings will increase, and thermometer readings will decrease.

The barometers are the devices, which are used for the measurement of the pressure and the thermometer is a device, which is used for the measurement of the temperature. During snowstorm, the temperate is decreased and the pressure is high. So, the reading on the thermometer would decreased, and the reading on the barometer would be increased.


Answer:

D.

Explanation:

2. Which organelle acts like the “brain” or control center of the cell?

Answers

The organelle that acts like the brain or the control center in the cell in the nucleus.

Hope this helps!!! :D
The nucleus controls everything in the cell and contains the DNA

Which statement best summarizes "Save the Coral Reefs”?Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.

Development along the coastal regions has significant negative effects on coral reefs. The reefs are an essential part of the ocean’s ecosystem, and when people build structures on top of them, they are easily damaged because they are so fragile.

Answers

Answer;

-Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.

Explanation;

-Coral reefs are important for many different reasons aside from supposedly containing the most diverse ecosystems on the planet.

-They protect coastlines from the damaging effects of wave action and tropical storms ( they provide a buffer, protecting our coasts from waves, storms, and floods, helping to prevent loss of life, property damage, and erosion) and also provide habitats and shelter for many marine organisms.

Answer:

Coral reefs are a very important component of the ocean’s ecosystem because they support sea life, such as crabs and sea turtles. In fact, over four thousand species depend on the survival of the reefs, which are being destroyed by bleaching. More must be done immediately to save the reefs.

Explanation:

Which of the following is an indicator of good water quality?


High levels of nitrates

High levels of phosphates

All of the above

Zero turbidity

Answers

I would think that it is B. Nitrates can be a form of pollution and D is usually from the speed of the water moving.

Answer:d

Explanation:took test

Which of these processes is used to break down glucose into ATP that is usable by the cell?
A) chemosynthesis
B) photosynthesis
C) respiration
D) transpiration

Answers

C) respiration is the process that is used to break down glucose into ATP.
C), This takes place in the mitochondria, does cell respiration to produce ATP/Energy

Why must organisms of the estuary be adapted to varying levels of salinity? A.Fresh river water flows into the estuary
B.Saline ocean water flows into the estuary
C.Ocean tides increase and decrease the amount of ocean water
D.All of the above

Answers

Final answer:

Organisms in estuaries must adapt to varying levels of salinity due to the unique environment where fresh river water and saline ocean water meet, creating varying and changing salinity levels. Fresh river water, saline ocean water, and ocean tides all contribute to these salinity changes.So, the correct answer is D. All of the above.

Explanation:

Organisms in the estuary must be adapted to varying levels of salinity because of the unique factors of their environment. The estuary is a transitional zone where fresh river water meets marine or saline ocean water. This creates varying levels of salinity, which can even change with the tides. Therefore, organisms living there have to adapt to this ever-changing salinity environment.

This happens because of a combination of the factors mentioned in options A, B, and C. Fresh river water from inland sources flows into the estuary (option A), increasing the freshwater content. On the other hand, saline ocean water also flows in (option B), increasing the salinity. Furthermore, the rise and fall of ocean tides can increase and decrease the amount of saline water entering the estuary (option C). So, the correct answer is D. All of the above.

Learn more about Estuary Adaptation here:

https://brainly.com/question/26768445

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Which of the following best describes a feature of the cell membrane's structure that allows molecules such as oxygen and hydrocarbons to easily cross the membrane and enter the cell?
a. The bilayer contains mostly polar molecules.
b. The interior of the lipid bilayer is hydrophobic.
c. The bilayer is embedded with transport proteins.
d. The exterior of the lipid bilayer is unsaturated.

Answers

B the interior of the phospholipid bilayer membrane is hydrophobic.  

the heads of the phospholipids are hydrophilic and the 2 tails are hydrophobic.
 
the molecules described are small enough that they can pass through the membrane without much trouble.   

Answer:

The interior of the lipid bilayer is hydrophobic (Ans. B)

Explanation:

The plasma membrane is selective in nature some of polar molecules and hydrophobic molecules can pass through the lipid bilayer of the cell membrane, large polar molecules and ions cannot pass through it.

By active and passive transport integral membrane proteins enables large polar molecules and ions to pass through the membrane. 3 primary factors which determine weather a molecule can diffuse through a membrane or not are : Size, Concentration and Charge.

which research question about the largemouth bass and whirligig beetle would best match the scientists' observations?
a.how log do fish spend rinsing their food?
b.what is the favorite food of a larrgemouth bass?
c.which insects produce the most foul-tasting substances?
d.does the slow release of a foul-tasting substance increase survival?

Answers

Answer - D. does the slow release of a foul-tasting substance increase survival?

A good example of something that is biodegradable is __________.

a leaf in a compost pile
a plastic milk jug in a landfill
a plastic six-pack can holder in an estuary
a polystyrene burger container in a trash can

Answers

The first answer a leaf in a compost pile

If matter cannot be created or destroyed within the physical universe, then the total quantity must be _____????????

Answers

Your answer: The total quantity must be the same/constant.

Hope it helps

What does it mean if a scientist fails to reject a hypothesis?

Answers

It means that the hypothesis has failed to be proven wrong.

Which of these is not a component of the cell membrane? question 19 answers phospholipids rna cholesterol proteins?

Answers

Cholesterol is not a part of the cell membrane

Because of when the chromosomes pair up during meiosis, crossing-over must occur during

Answers

Yes ceosing over will be occur foe eeshufling of genes

Electrons are excited in photosystem I. With what do these electrons combine to produce an energy-carrying molecule?

A.ADP
B.Glucose
C.ATP
D.NADP+

Answers

NADP+ (NADPH) is the result of the electrons which combine to produce an energy carrying molecule. This happens when the electrons get excited in photosystem I.

For a given species, an increased evolutionary rate would cause a decrease in A) biodiversity. B) fitness of a species. C) similarity of the individuals in the species. D) the number of new genes in the DNA of the species.

Answers

A. Biodiversity is the answer

Answer: C) similarity of the individuals in the species

Explanation: Similarity of the individuals in the species. It would be expected that increased evolutionary rate would cause individuals in the species to resemble each other less.

Create a sentence explaining how amino acids form proteins

Answers

the amino acids form a long chain, peptide bonds are formed by a chemical reaction that retracts the water molecule as it joins the amino acid group

Amino acids are monomers that combine to form polymers called proteins.

if a codon in RNA was GAC, what would it's copy be?

Answers

Assuming that you are asking for its anticodon that is carried on the specific tRNA molecule, the anticodon simply complementary base pairs the nucleotides in the RNA codon, in this case would be CUG.

If you were referring to DNA, then we would have to work backwards to find the set of 3 nucleotides that base pair to GAC, which would be CT

Why did Gregor Mendel conclude that the genes for flower and seed color in pea plants independently assorted even though both traits are on the same chromosome?

Crossing over occurred frequently.

The genes are not considered linked.

The genes are very far apart on the chromosome.

All of the above are correct.

Answers

I believe the correct response would be all of the above.

state the numbered position of the moon that could result in a lunar eclipse

Answers

In this image, it's the position number 3.

Final answer:

A lunar eclipse occurs when the Moon enters the Earth's shadow during its full phase when the Sun, Earth, and Moon are aligned.

Explanation:

A lunar eclipse occurs when the Moon enters the shadow of Earth. This event can only happen when the Sun, Earth, and Moon are precisely aligned, meaning the Moon has to be in its full phase. During a lunar eclipse, if you imagine the Earth's dark shadow as a numbered area, the Moon must be in the number corresponding to the darkest part of the Earth's shadow. This is a necessary condition for a lunar eclipse to occur and for the phenomenon to be observable from Earth.

An eclipse of the Moon, also known as a lunar eclipse, can occur when the Sun, Earth, and Moon are in a line. The Moon enters the shadow of the Earth, causing it to darken. The numbered position of the Moon that could result in a lunar eclipse is position 1, where a total eclipse occurs.

What disease causes an imbalance of the blood glucose levels

Answers

"Diabetes" is one of such diseases which cause an imbalance of the blood glucose levels.

Hope this helps!

A biologist observes that ocean temperature decreases with increasing depth and concludes that deep sea creatures are superior animals because they can survive in harsher environmental conditions. Why is this an invalid scientific conclusion?
A. The data was not compared among several sampling sites.
B. The data did not specify the measurement system used.
C. Scientific data cannot be used to make judgments of organism superiority.
D. Scientific data cannot be used to measure temperatures that are inaccessible to humans.

Answers

c or d
because of the passage you can find the answer

Explain why the chromosomes in the second drawing have sister chromatids, but the chromosomes in the third drawing do not. What happened to the sister chromatids?

Answers

Final answer:

The chromosomes in the second drawing have sister chromatids because DNA has replicated during the S phase of interphase, resulting in two identical copies that are joined at the centromere. By the third drawing, the sister chromatids have likely separated during anaphase, making them individual chromosomes.

Explanation:

The chromosomes in the second drawing have sister chromatids because during the S phase of interphase, DNA replication occurs, which results in each chromosome being composed of two identical copies. These copies, called sister chromatids, are joined together at a region known as the centromere and are visible under a light microscope in the familiar "X" shape. The absence of sister chromatids in the third drawing is likely due to the chromosomes having moved into a stage of cell division known as anaphase, during which the sister chromatids are pulled apart toward opposite poles of the cell, thus no longer existing as attached pairs but as individual chromosomes.

Because second drawing twins (chromatids) separate in phase three, becoming solo chromosomes.

Here's why the chromosomes in the second drawing have sister chromatids, but those in the third drawing don't:

Second Drawing:

* The chromosomes in the second drawing have sister chromatids because they are in the prophase stage of cell division. In prophase, DNA replication has already occurred, resulting in each chromosome being duplicated. These two identical copies stay attached at the centromere and are called sister chromatids.

Third Drawing:

* The chromosomes in the third drawing lack sister chromatids because they are in the anaphase stage of cell division. During anaphase, the spindle fibers pull the sister chromatids apart towards opposite poles of the cell. This means each chromatid becomes an independent chromosome.

Therefore, the sister chromatids in the second drawing have simply separated and moved to opposite poles in the third drawing. This separation is a crucial step in cell division, ensuring that each daughter cell receives a complete set of chromosomes.

Chemical reactions that release energy are______________________

Answers

The answer is:  exothermic .
________________________________________

The pictures below show a cave and a geyser.



Which of these statements is correct about the cave and geyser shown in the pictures?

a. Both are formed when groundwater gets heated.
b. Both are formed when groundwater reacts with the limestone in rocks.
c. The cave is formed when groundwater reacts with the limestone in rocks and the geyser is formed when groundwater gets heated.
d. The cave is formed when groundwater gets heated and the geyser is formed when groundwater reacts with the limestone in rocks.

Answers

Answer:

c

Explanation:

Fish, trees, and animals are important wildlife resources that we depend on for survival. Fish are a main source of food for many of the people in the world. Trees have been used to build and heat homes, make paper, and provide food for centuries. Humans hunt land animals such as deer, fox, antelope, and buffalo for food and other products. What can we do to protect wildlife resources so they will be around for future generations?

Answers

Answer:

harvest fast-growing trees, impose fishing limits, and impose laws to prevent poaching and illegal hunting

Explanation:

i got it right

The animals in the food web release _____ into the enviroment , which plants then use for ______ ?

Answers

The animals in the food web release Carbon dioxide into the environment, which plants then use for Photosynthesis

Hope this helps!

Cells of a multicellular organism are specialized. What does this statement mean?
A.

Cells of a multicellular organism can perform all the life functions the organism needs to survive.

B.

Cells of a multicellular organism perform all life functions but not at the same time.

C.

Cells of a multicellular organism are adapted for performing a specific function.

D.

Cells of a multicellular organism are specialized because they have a complex structure.

Answers

D.Cells of a multicellular organism are specialized because they have a complex structure.

Hope this helps!
The answer is C. Cells of a multicellular organism are adapted for performing a specific function.

Specialised cells perform a specific function. They cannot perform all the functions of the organisms, but only some of them. Imagine specialised heart cells and liver cells. They do not perform all functions of the organism but are specialised for some of them. The heart cells cannot perform the liver cells functions and vice versa.

A shark's skeleton is different from a goldfish because
a. the shark's skeleton is very dense.
b. the shark's skeleton is quite rigid.
c. the shark's skeleton is composed of bone.
d. the shark's skeleton is composed of cartilage.

Answers

The skeleton of a shark is made out of cartilage.
d. the sharks skeleton is composed of cartilage. 
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