The cell membrane allows gases and nutrients in and out of the cell.
The correct answer is option D, the cell membrane. The cell membrane, also known as the plasma membrane, is a vital component of all cells. It serves as a selectively permeable barrier that separates the internal environment of the cell from its external surroundings. One of its crucial functions is to regulate the movement of substances in and out of the cell, including gases and nutrients.
The cell membrane is made up of a phospholipid bilayer embedded with various proteins. These proteins play a role in facilitating the transport of molecules across the membrane. There are two main types of transport across the cell membrane:
Passive Transport: This includes processes like diffusion and facilitated diffusion, where substances move from an area of higher concentration to an area of lower concentration. Small gases like oxygen and carbon dioxide can passively diffuse through the lipid bilayer of the membrane.
Active Transport: This involves the use of energy to move substances against their concentration gradient, from an area of lower concentration to an area of higher concentration. Nutrients and other molecules can be actively transported using protein pumps.
In both cases, the cell membrane is responsible for controlling what enters and exits the cell, maintaining an appropriate internal environment for cellular functions. This selective permeability ensures that essential gases like oxygen and nutrients can enter the cell while waste products can exit. Thus, the cell membrane is a crucial structure that enables the exchange of gases and nutrients required for cellular metabolism and survival.
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Which cell type would have the highest concentration of oxygen on a bright, sunny day?
Answer: The Pulmonary vein blood vessel carries oxygenated blood from the lungs back to the heart. Therefore, it carries the highest concentration of oxygen.
Explanation: i think is the answer not sure hope it help this question :)
What did Alfred Wegener try to prove with fossil evidence?
Answer:
Earth's continents were once connected in a single supercontinent.
Explanation:
v
Which structure is this statement most likely referring to
Answer:
semipermeable membrane is a large glucose molecule that requires facilitated diffusion but an oxygen molecule does not.
you don need to actually chew the bread. you can just break it up into smaller pieces. which variable will you change in your investigation?
Answer: The type of bread (independent variable)
Explanation:
You can just change the type of bread you are eating and just hold it in your mouth to test your hypothesis of not having to chew the bread. It’s the easier thing to change when making the experiment. Now your bread is your independent variable because you are not changing anything else but the type of bread. Not sure if your question is talking about the technical terms for the variable or what actual variable in the experiment, so I put down both.
All options below explain why invertebrates reproduce more fertilize eggs than needed EXCEPT that
To make sure that other animals have a food source.
Many of the eggs will not survive and hatch due to predators.
This ensures that many of the eggs will have a chance to reach its adult stage
The more eggs produced the higher the chance more will survive
The following image gives a basic diagram of a typical moss plant. Label some of the important parts of the plant, and identify which structures represent the sporophyte and gametophyte phases.
An illustration shows a moss plant. The leaf-like parts and rhizoids are labeled as C and D respectively. Together they are labeled as B. The top portion of the plant is labeled as A.
Need answers for A,B,C,D I have included the multiple choice answers below.
Answer:
for the first one its the second one i could not see the others
Explanation:
This graph shows the harbor seal population in the gulf of Maine for a twenty year period. A population of seals with unlimited
resources will continue to grow exponentially as shown in the graph above. What are some density-dependent limiting factors that
would prevent continued exponential growth? Choose ALL that apply.
es )
Answer:
Explanation:
This graph shows the harbor seal population in the gulf of Maine for a twenty year period. A population of seals with unlimited
resources will continue to grow exponentially as shown in the graph above. What are some density-dependent limiting factors that
would prevent continued exponential growth? Choose ALL that apply.
es )
The cell membrane is known as the fluid mosaic model.
True
False
Answer: the answer is true
The second atmosphere was created by volcanic activity. This atmosphere was rich
in oxygen
True
Or
False
___ help the flow of blood from atrium to ventricle. HELPPP
Answer:
the two atrioventricular valves
significance of soil air
Answer:
The soil air is responsible for influencing the availability of many nutrients. Soil air is also by many of the microorganisms that release plant nutrients to the soil. The soil air can fill soil pores as water drains or is removed from a soil pore by evaporation or root absorption.
Explanation:
Select ALL the correct answers.
A mother has blood type A and her son has blood type O. Which blood types are possible for the father?
A
O
AB
B
Answer: Blood types O, A, and B are possible for the father.
Explanation: Since the mother has type A blood, there are two possible genotypes that she can have: AA or AO. Since her son has type O blood, he only has one genotype: OO.
For blood types,
Type A - AA or AO
Type AB - AB
Type B - BB or BO
Type O - OO
* A and B are dominant over O.
Now we have to do crosses between the mother and the father:
AA mother with AB father: child with type AA or type AB blood
AO mother with AB father: child with type AA, AO, AB, or BO blood
AA mother with OO father: child with AO blood
AO mother with OO father: child with AO or OO blood
AA mother with AA father: child with type AA blood
AA mother with AO father: child with type AA or AO blood
AO mother with AA father: child with type AA or AO blood
AO mother with AO father: child with type AA, AO, or OO blood
AA mother with BB father: child with type AB blood
AA mother with BO father: child with AB or AO blood
AO mother with BB father: child with AB or BO blood
AO mother with BO father: child with AB, AO, BO, or OO blood
The father can have blood types O, A, or B.
Anything made from crude oil or natrual gas can be made from synthetic oil.
True
Or
False
Answer: True but not always
Describe the function of the following organelles a. cell (plasma) membrane
b. cytoskeleton
c. cytoplasm
d. nucleus
e. nucleolus
f. Ribosomes
g. endoplasmic reticulum (rough and smooth)
h. vesicle
I. Golgi apparatus
j. lysosome
k. vacuole
l. centrioles (centrosome)
m. Cilia
n. flagella
o. mitochondria
p. chloroplast
q. cell wall
Answer:
the answer is b
Explanation:
Because I'm learning science and I looked at the answer for a while
The bacteria that is responsible to convert ammonia to nitrates is called
Group of answer choices
E coli
denitrifying bacteria
nitrifying bacteria
Answer:
nitrifying bacteria
Explanation:
Once it reaches full size, an invertebrate is considered:
an adult
1. a nymph
2. a larvah
3. a pupa
help me please like rn :(
Which option distinguishes what a commodities trader would do with the information in the following scenario?
A heat wave is expected to hit the central United States and cause a drought that will kill off many wheat plants.
sell off wheat supplies immediately at their highest price
immediately buy futures contracts at their current prices
cancel all options on future sales of wheat
wait until the heat wave to make wheat purchases
The commodities trader would immediately buy futures contracts at their current prices. The correct option is C.
Thus, a commodities trader would probably predict a decline in wheat supply if they learned about an anticipated heat wave and drought that may affect wheat plants. They would then buy futures contracts at their present levels in response.
By taking this move, the trader is able to protect himself against prospective price rises brought on by the decreased supply of wheat by securing the right to purchase wheat at a certain price in the future. The trader may be able to take advantage of the predicted market conditions before the impact of the heat wave is fully felt by purchasing futures contracts.
Thus, the ideal selection is option C.
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scientists have discovered a mutation that prevents the formation of which are responsible for separating chromosomes
The chromosomes are separated by a structure called the mitotic spindle. The mitotic spindle is made of many long proteins called microtubules, which are attached to a chromosome at one end and to the pole of a cell at the other end. The sister chromatids are separated simultaneously at their centromeres
Select the TRUE statement about a resting neuron. a.) The cytoplasm side of a neuron is positively charged while the outside of the neuron has no charge. b.) The cytoplasm side of a neuron is negatively charged while the outside of the neuron is also negatively charged. c.) The cytoplasm side of a neuron is more negative than the outside of the neuron. d.) The cytoplasm side of a neuron is more positive than the outside of the neuron.
Given what we know about the nervous system and resting neurons, we can confirm the cytoplasm side of a resting neuron is more negative than the outside of the neuron.
What is a neuron?Neurons are specialized cells that make up the nervous system in the body. Their primary function is to act as messengers, delivering information in the form of electrical impulses and neurotransmitters. These neurons work using rapid shifts in membrane potentials.In order to do this, the starting value or resting point of the membrane is negatively charged.Therefore, we can confirm that since neurons function using shifts in membrane potentials, the starting point or resting form of a neuron has a negatively charged membrane, meaning that the cytoplasm side of a resting neuron is more negative than the outside of the neuron.
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Sorry I have a slow mind... What word do weather forecasters use to describe water vapor that has gathered in a cloud?
Answer:
condensation
Explanation:
Condensation is when the water vapor becomes a cloud
please mark brainliest :)
What type of molecule is represented by the model below?
Carbohydrate
Steroid
Fat
Nucleic acid
I NEED HELP ASAP. Ice cream atomic theory write a summary about the topic. added scientific information definite/indefinite shape & definite/indefinite volume for solids, liquids, AND gases. PLZZZZ HELP ME
Answer:
gang gang
Explanation:
A cell that contains chloroplasts, a nucleus, and mitochondria is discovered. Biologists might decide it could
a. eukaryotic cell.
b. prokaryotic cell.
c. neither a eukaryotic or prokaryotic cell.
d. either a eukaryotic or prokaryotic cell.
Answer:
eukaryotic cell
Explanation:
because prokaryotic cells lack nucleus
Answer: eukaryotic cell
Explanation: Hope this helps :)
physiology Of Digestion Of Earthworm In Simple Word Of Mouth
Answer:
They do not have teeth. A liplike extension over the mouth helps direct food into the mouth, where the muscular pharynx (throat) grabs it, coats it with saliva and pushes it down the esophagus into the crop, where it is stored before moving on to the gizzard.
Explanation:
Which part is hydrophobic?
Tails
heads
legs
arms
Answer: the tails are hydrophobic and the heads are hydrophilic
If an invasive species emigrated from a continent to a small island near the continent, what would most likely occur on the island
Answer:
Organisms on the island would migrate to a larger island.
Invasive species can cause extinctions, reduce biodiversity, compete for resources, and modify environments.
What is an invasive species?An invasive species is a category of non-native species that has overtaken the habitat to which it was initially introduced.
Native plants and animals may go extinct as a result of invasive species, which can also decrease biodiversity, compete with native species for scarce resources, and disrupt habitats.
Preventative measures are the most practical and secure method of managing invasive species. It is far more effective to deal with invasive species early on and quickly than to try and contain an extensive infestation. The invasive species may be the target of control and management measures if eradication is not achievable.
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Virus that infect E.coli is called
Answer:
Escherichia virus T4 is a species of bacteriophages that infect Escherichia coli bacteria.
Help me solve this question please
Answer:
where is the question .....?????
What would happen if any of the biogeochemical cycles would break
Answer:
Excess phosphorus is polluting our environment while, ironically, mineable resources of this essential nutrient are limited. Globally, oxygen-depleted marine coastal 'dead zones' caused by nutrient-stimulated algal blooms continue to expand
Explanation:
In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur during meiosis?
A) prior to meiosis I
B) prior to meiosis II
C) prophase I in meiosis I
D) prior to meiosis I and meiosis II
Answer:
I guess prlor to melosis is the right answer
