Answer:
The difference between the cellular make - up of a living organism and aluminum can is the ability to use energy .
Skeletal muscle is controlled by the organism.
Which best describes what this means in terms of movement?
Answer:
Voluntary
Explanation:
Because some of the muscle attached to the skeleton is voluntary
How do temperature and concentration of monounsaturated phospholipids change the rate at which molecules permeate the plasma membrane?
Answer: At low temperatures the fluidity of the membrane decreases and it favors fluidity. The higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable).
Explanation:
The plasma membrane is a lipid layer that delimits the entire cell, dividing the extracellular medium from the intracellular (the cytoplasm of a cell). They are composed of phospholipids, which are molecules composed of glycerol, a phosphate group and two lipid chains (such as fatty acids). Glycerol is a three-carbon molecule that functions as the backbone of this membrane. A geometry is formed that allows the phospholipids to line up side by side to form broad sheets. They are insoluble in water, but their unique geometry causes them to aggregate in layers without any energy input, as they possess a hydrophilic phosphate head and a hydrophobic tail consisting of the two fatty acid chains. The hydrophilic heads of the phospholipids in a bilayer membrane face outward and are in contact with the aqueous fluid inside and outside the cell. Because water is a polar molecule, it readily forms electrostatic (charge-based) interactions with the phospholipid heads.
Selective permeability is a property of the plasma membrane and other semipermeable membranes that allow only certain particles to pass through them. In this way, those particles that are needed by the cell can enter the cell and those that are not useful to the cell are prevented from entering. In the same way, the cell can eliminate the particles it has produced as waste. In this way, the entry and exit of substances through the membrane is regulated and the correct functioning of the cell is achieved.
For a particle to be able to cross the plasma membrane it must have a size equal to or smaller than the pores of the membrane, it must have the opposite charge to the charge of the membrane or simply have a neutral charge, and if it is larger than the pores it must be dissolved in a solution, decreasing its size and thus be able to enter the cell through the membrane.
Plasma membranes are fluid and this fluidity depends on their lipid composition and temperature. Depending on the temperature, membrane lipids can be found in two different states or phases: gel (solid-like, with more rigid hydrocarbon chains) and liquid crystal (more fluid, with more mobile hydrocarbon chains). At low temperatures the fluidity of the membrane decreases and in these conditions the increase of its concentration favors fluidity. The temperature at which the transition from one state to the other occurs is the phase transition temperature (Tc). At values below Tc, the bilayer is in the gel state and at higher values it passes to the liquid crystal. It should be noted that there is an equilibrium between the gel state and the liquid crystal state and that the characteristics of the lipids of the bilayer condition the transition temperature. In the case of bilayers consisting of only one type of lipid, the Tc is well defined. But biological membranes are complex lipid mixtures and the transition from one state to another occurs over a range of temperatures. The presence of short-chain or unsaturated fatty acids reduces the transition temperature, while saturated fatty acids and the increase in the length of the hydrocarbon chains cause this temperature to rise. Then, phospholipids with unsaturated fatty acid tails cannot bind as tightly due to the bent structure of their tails. For this reason, a membrane of unsaturated phospholipids remains fluid at lower temperatures than a membrane of saturated phospholipids.
The fluidity of a membrane is the ability of a molecule to move through it. In short, the higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable) the membrane will be even at low temperatures. However, at low temperatures the fluidity of the membrane decreases (lower permeability) but the effect will depend on the composition of the fatty acids. To determine the exact permeability, it is necessary to relate the concentration of unsaturated bonds and the length of the fatty acids in the phospholipids and the temperature.
What are genetic crosses
Answer:
1:2:1 is the genetic crosses
what are the examples of facultative carnivores?
Explanation:
Facultative carnivores are those that include significant amounts of plant material in their diet. Most dogs (canids), for example, are facultative carnivores, though gray wolves and African wild dogs (painted hunting dogs) are hypercarnivorous.
NOT A QUIZ: 10 POINTS!
Answer:
a. (black fur): phenotype
b. (AA, Aa, aa): genotypes
c. (Aa): heterozygous
d. (aa): hom0zygous recessive
e. (AA): hom0zygous dominant
Explanation:
help needed asap please :(
Answer: its the top one
Pls someone help me ASAP
See the attached image, please!
16 points!
Answer:
Explanation:
From what I can see I think......
16) True
17) False
What is the role of the fungus in the food web shown?
boa constrictor
beetle
- coati
poison dart frog
sloth
strangler fig
fungus fruit bat
A. To recycle molecular building blocks
a
B. To break down photons
C. To gather green light
O D. To convert light energy into chemical energy
Answer:
OptionA because decomposers are associated
Explanation:
The role of the fungus in the food web shown is to recycle molecular building blocks. The correct option is A.
What is food web?A food web is a diagram that depicts the interconnection of various organisms in an ecosystem via the exchange of energy and nutrients.
The food web is made up of several interconnected food chains that represent the flow of energy from one organism to the next.
Fungi are decomposers that play an important role in breaking down organic matter and recycling nutrients in many ecosystems.
The fungus in the food web is most likely breaking down dead plant or animal matter, releasing nutrients like carbon, nitrogen, and phosphorus back into the soil.
These nutrients are then absorbed by plants, which are then consumed by herbivores such as the coati and sloth.
Thus, the correct option is A.
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What type of organisms make up the majority of life on the surface of the pelagic zone?
chemosynthetic bacteria and invertebrates
seaweed and fish
mollusks and seaweed
plankton and algae
The types of organisms that make up the majority of life on the surface of the pelagic zone are plankton and algae. That is the last option, as plankton and algae are the primary producers in the surface layer of the pelagic zone.
What are the zones of water?
The pelagic zone is the open ocean area that comprises the largest ecosystem on Earth. It is divided into different layers depending on the depth and amount of sunlight that penetrates the water. The surface layer of the pelagic zone, also known as the photic zone, is the layer that receives enough sunlight for photosynthesis to occur, and it is where most of the ocean's primary production takes place.
Hence, the types of organisms that make up the majority of life on the surface of the pelagic zone are plankton and algae, which is the last option.
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where's ATP produced in a cell and how?
The energy released during respiration is stored in the form of compounds called ATP molecules. They are produced by the enzyme ATP synthesis which converts ADP to ATP. It is located in the membrane of the cellular structures called mitochondria.
Answer:
Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.
Explanation:
BRAINLIEST PLZ
Which of these cell organelles are NOT found in plant cells?
Centrioles
Cell wall
Chloroplasts
Vacuoles
Answer:
centrioles
Explanation:
I hope it's helpful for you ☺️Answer:
Centrioles
Explanation:
They aren't found in plant cells.
Differentiate between communicable and non-communicable diseases. Give one example of each
Answer:
hope this helps helps you a lot
my handwriting is bad sorry for that bhai
help can be needed please
Is it possible to know the genotypes of the three children in generation III? _________________________ Should their shapes be shaded? ____________________________ Explain your answer to both questions
Answer: Some data related to your question is missing attached below is the data.
answer:
It is possible to know their genotypesthe shapes should be shaded as wellExplanation:
It is possible to know the genotypes of the Children ( three of them ) and their genotypes are ; Hh, Hh, Hh
Their shapes should be shaded as well and this because the (3) children posses the dominant allele H in their genotype composition .
Some records associated with your query is lacking connection underneath are the records.
It is feasible to recognize that their genotypes shapes have to be shaded as properly.
It is feasible to recognize the genotypes of the Children (3 of them) and their genotypes are; Hh, Hh, HhTheir shapes have to be shaded as properly and this is due to the fact that the kids possess the dominant allele H of their genotype composition.What are genotypes?Genotype is an individual's series of genes. The time period can also talk over with the 2 alleles inherited for a selected gene. The genotype is expressed whilst the records encoded withinside the genes' DNA are used to make protein and RNA molecules.
Thus it is clear that the above answers are well explained.
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Nitrogen fixation converts nitrogen gas to usable nitrogen for plants?
True
False
Answer:
True, nitrogen fixation converts atmospheric nitrogen into nitrogen that can be used by plants.
Explanation:
Think about water. There's plenty of water on Earth, but very few is actually drinkable, at least for humans. So we have to fix it by filtering out dangerous bacteria in the water and other dangerous stuff before being able to actually drink it. Same with atmospheric nitrogen. It must be "fixed" before plants can actually use them.
Regarding fluid shifts and dehydration, when ADH secretion increases to regulate sodium balance by means of increased water retention without additional water consumption (i.e., you lost water but retained electrolytes and didn't drink water], the end result is:
Answer:
increase Na+ levels in ECF compared to the original condition.
Explanation:
The increase in ADH secretion increases to regulate sodium balance. The will be increase sodium levels in ECF compared to original conditions. The is no additional water consumption in the reaction and electrolytes will be retained.
Which of the following can a UAV do?
1. Provide information about geography
2. Provide information about soil nutrients
3. Provide information about soil hydration
4. Provide information about plant health
Answer:
Provide information about geography
Explanation:
UAVs are otherwise known as unmanned aerial vehicles or drones. They are usually remotely controlled and monitored from a screen. They can be flown over a large expanse of land to obtain geographical information such as the topography of an area, the distance between two points, the height above sea level, and so on.
Except the UAVs are specially designed and equipped with extra features, they cannot be used to obtain information relating to soil nutrients, soil hydration, or information about plant health on a field.
Hence, the correct answer would be option 1,
Answer: Provide information about geography
Explanation:
It's correct
perfect 2 minute speech on deforstation
Answer:
A warm welcome to all present here. Today I am going to give a speech on deforestation. Deforestation is the process of cutting down the forest, without replanting them again. The causes for deforestation are to obtain wood and fuel or to use the land for farming, mining or construction. From the time of civilization till now, forest wood is very essential for humans in our day to day life.Explanation:
U can add more if u like it!ASAP
In multicellular organisms, what do groups of cells form?
A. Prokaryotes
B. Homeostasis
C. Tissues and organs
D. Cell walls
Answer:
Letter c
Explanation:
tissues and organs
what was invented in the late 16th century that allowed scientists to study organisms at a new level
Answer:
compound light microscope
Explanation:
:)
The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.
Thus, The microscope revolutionized the field of biology by enabling researchers to observe and study tiny structures, cells, and microorganisms that were previously invisible to the eye.
This technological advancement marked a significant milestone in the history of science.
It paved the way for discoveries and insights into the microscopic world of living organisms.
Thus, The light microscope was in the late 16th century that allowed scientists to study organisms at a new level.
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During starch test why is leaf boiled in ethanol?
A) to kill its Protoplasm
B) to soften it
C) to extract its chlorophyll
D) to retain its starch
Answer:
think its C cause when you boil it almost loses all its colour
Is there a difference between "living" and "life"? Explain.
Answer:
in my opinion
I think that there is a difference between the both
Explanation:
since living refers to the present time as we do things , move , talk and so on ..whereas life is placed within us like we have life with us even when we sleep.. we breath in the oxygen which is the atmosphere we breath in order to live .. but both have some common similarities
Why are most of the functions of the body regulated by negative, rather than by positive feedback
mechanisms?
Answer:
Negative feedback mechanisms actually control a process; it can turn it off, whereas positive feedback accelerates the process, allowing the cell no control over it.
Explanation:
Which activity is a way engineers can control erosion?
O A. Testing a body of water near a building site to make sure that it
can support wildlife
B. Using protective barriers to hold the soil on sites exposed by
construction activities
C. Designing buildings that can be maintained using minimal water
and electricity
D. Looking for soil that contains minerals that bind with particular
pollutants
Answer:
B. Using protective barriers to hold the soil sites exposed by construction activities.
The DNA sequence ATC AGC GCT GGC CCG is part of a gene.
How many proteins are coded for by this message?
15
1
4
5
Answer:
There are 5 proteins coded for by this message.
Explanation:
For every 3 bases, a protein is coded.
IC What will be the difference in liquid pressure on their bases if bo B are filled with water completely but one of them is kept in Lumbini and another in Pokhara? Why?
Explanation:
Answer: Explanation: A will have more pressure in its base and B will have pressure half of A if they are kept in same place. ... B will have more liquid pressure because the density of the salty water is greater than the water.Oct 13, 2020
Why are sponges considered as parazoa
Answer:
Sponge parazoans are unique invertebrate animals characterized by porous bodies. This interesting feature allows a sponge to filter food and nutrients from water as it passes through its pores.
How does Earth's internal structure contribute to its magnetic field?
A. The inner core is a permanent magnet made of iron, and the liquid
iron in the outer core aligns with that magnet's magnetic field.
B. Convection currents in the core generate a magnetic field, which is
strengthened by convection currents in the mantle.
C. The crust becomes magnetic because of radiation from the sun,
and the resulting magnetic field makes all of Earth's layers
magnetic
O D. Convection currents in liquid iron in the outer core generate an
electric current, which produces a magnetic field.
i think answer D( convection currents in liquid iron in the outer core generate an electric current , which produces a magnetic field)
DNA Polymerase is responsible for:
