Answer:
There are two major ways that molecules can be moved across a membrane, and ... is trying to be evenly distributed everywhere, like dropping food coloring in water. ... These channels are almost always specific for either a certain molecule or a ... When a molecule moves down its concentration gradient is it participating.
When a solute particle from the region of high concentration travels towards the region containing the lower solute particle is called passive transport. It is transported easily without spending energy.
Bacteria ensures that the food molecule from the surrounding will transport through the passive transport system by the concentration gradient as molecules can get in the cell by two processes.
Concentration gradient allows the movement of food from the region of high concentration towards the region of low concentration that is in the bacterial cells.
Bacterial membrane permits the movement of food molecules across its membrane easily.
Therefore food is transported to the bacteria through passive transport.
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In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix. In what direction do protons flow during chemiosmosis in chloroplasts
Answer:
Protons flow from the thylakoid space into the stroma of the chloroplast
Explanation:
Chemiosmosis is one of the two events that occur in oxidative phosphorylation (the other being electron transport chain). Chemiosmosis, which occurs to synthesize ATP in both cellular respiration and photosynthesis, is the process whereby protons (H+) move across a membrane via osmosis. In other words, chemiosmosis builds the proton gradient required to power ATP synthesis via the aid of an enzyme called ATP synthase.
In cellular respiration, chemiosmosis occurs when protons flow from the intermembrane space into the matrix while in PHOTOSYNTHESIS, cheniosmosis occurs when protons flow from the thylakoid space into the stroma of the chloroplast.
The flow of protons takes place from the thylakoid space into the stroma of the chloroplast during the chemiosmosis in chloroplasts.
What is chemiosmosis?It is one of the events, which takes place during oxidative phosphorylation. It generally takes place to produce ATP in both the process of photosynthesis and cellular respiration. In the process, the protons move across a membrane through osmosis.
It can also be stated that building of the proton gradient for the synthesis of ATP takes place by chemiosmosis with the help of an enzyme known as ATP synthase.
Chemiosmosis takes place when flow of protons takes place from the intermembrane space into the matrix during cellular respiration. While in photosynthesis, chemiosmosis takes place when flow of protons takes place to the stroma of the chloroplast from the thylakoid space.
Thus, in chloroplasts, chemiosmosis takes place when flow of protons takes place from the thylakoid space into the stroma.
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The state of Georgia has seen their water table become lower. What does this mean?
A. The amount of groundwater is increasing.
B. Their groundwater is flowing to confined aquifers.
C. The amount of groundwater is decreasing.
D. heir groundwater is being recharged by rain.
Answer:
The amount of groundwater is decreasing.
Explanation:
The water table is the top of the groundwater in the Earth. The greater its depth in the Earth, the less groundwater is in the aquifer below.
Which of these is one characteristic of topographic maps? A mountain peak. B location of a ravine. C steepness of a slope. D distance between two areas.
Steepness of a slope (C) is one characteristic of topographic maps.
"The more closely spaced the contour lines, the steeper the slope. You can find out exactly how steep the slope of the area you are interested in by subtracting the lowest elevation from the highest, and dividing the result by the horizontal distance."
How are catastrophic events related to changes in geological timelines?
A. They aren't related to changes in the geological timeline because they don't change the
overall population dynamics.
B. They aren't related to changes in the geological timeline because the timeline is dictated
by temperature cycles.
C. They cause significant changes that disrupt the equilibrium of the earth and lead to
natural separation points.
D. They define geological periods because scientists use them as reference points for
tracking the history of the earth.
PLEASE ONLY ANSWER IF YOU KNOW-
Answer:
D. They define geological periods because scientists use them as reference points for tracking the history of the earth.
Explanation:
Catastrophic events related to changes in geological timeline are very useful in defining geological periods.
These events have very significant appearance in the geological record and can be used to determine the history of the earth.
The catastrophic events usually culminates into extinction cycles or termination of some organisms from the earth surface.
Geologists use these events that are often wide spread to delineate geological periods.
help please TvT. Which one is it?
Answer:
a
Explanation:guess
Answer:
its A
Explanation:
some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese. But infectious bacteria can make you ill.
The bases in DNA that can pair together are called;
A.
Complementary bases
B.
Purines
C.
Nucleotides
D.
Pyrimidines
Answer:
A. Complementary bases.
Explanation:
i think im right...
Answer:
A
Explanation:
Its complementary because the other 3 are all singular, and A is a pair of 2, so from that alone you know its the answer. But additionally, since they can pair together, they are complementary.
Kim and Julio go to a raceway to watch Julio's older brother, Raul,
compete. Raul's car covers the 2.5 km in 12 seconds, reaching a speed of
180 km/h. Use the equation below to determine the rate of acceleration
of Raul's car.
In this equation, a is acceleration, Vf is the final velocity, v; is the initial
velocity, and t is time. (Hint: The initial velocity is 0 km/h.)
Ve-V;
a =
t
A. What is the final velocity of Raul's car? (Select]
B. What is the initial velocity of Raul's car? [Select]
C. What was the total time Raul's car traveled?
[ Select]
D. Solve for the acceleration of Raul's car.
[ Select ]
Answer:
B
Explanation:
took the test
Kim and jullio go to a raceway to watch Julio's older brother, Raul compete. Raul's car cover 2.5km in 12 seconds and reaching a speed of 180km/hr.
Let us assume that following:
S=distance
U=initial velocity
V=final velocity
A=acceleration
T=time taken
Given that:-
S=2.5 km
S=2.5×1000 mtr
S=2500 mtr
T=12 seconds
V=180km/hr
=180×1000/3600 m/sec
V=50 mtr/sec
U=0 because in starting his car in rest position
Equation which use for calculations of acceleration,
S = UT + 1/2AT^2
2500 = 0×12 + 1/2A(12)^2
2500 = 0 + 1/2×A×144
2500 = 72×A
A = 2500/72
A = 34.72 m/sec^2
It means when rauls starts the race it's car is in rest position and after that it accelerate at the rate of 34.72 m/sec^2
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The Earth's tilt also causes the Sun's radiation to strike the _____ at different _____.
Answer:
hemispheres; angles
Explanation:
When a hemisphere—either northern or southern— is tilted toward the sun it has more hours of light compared to the hemisphere tilted away from the sun. Moreover, lower latitudes where the incoming solar radiation is more direct (angle closer to 90°) receive more radiation compared to higher latitudes where sunlight strikes at lower angles. The combined effect of more hours of daylight and more direct radiation in the hemisphere tilted toward the sun generates warmer temperatures compared to the hemisphere tilted away from the sun.
The size of a frog population in a pond remains fairly constant over a period of several years because of a. decreasing competition b. environmental carrying capacity c. excessive dissolved oxygen d. the depth of the water
Answer:
d
Explanation:
Hydrogen peroxide naturally breaks down into oxygen and water over time. When exposed to the enzyme catalase, hydrogen peroxide is rapidly converted into oxygen and water.
What feature of catalase most likely is responsible for the change in the rate of conversion of hydrogen peroxide into water and oxygen?
A, Catalase speeds up the conversion of hydrogen peroxide into water and oxygen by decreasing the reaction's activation energy.
B, Catalase bonds permanently with the reactants causing hydrogen peroxide to rapidly break down by increasing the activation energy.
C ,Catalase has a flexible structure that allows it to bind and convert any small hydrogen containing compound into water and oxygen.
D, Catalase remains intact, so small amounts of it convert large amounts of hydrogen peroxide into water and oxygen immediately.
Answer:
Catalase is an enzyme in the liver that breaks down harmful hydrogen peroxide into oxygen and water. When this reaction occurs, oxygen gas bubbles escape and create foam. Completely disinfect any surface that the raw liver touches during this activit.
Explanation:
hope this helps you a little have a great day sir/mam
Catalase speeds up the conversion of hydrogen peroxide into water and oxygen by decreasing the reaction's activation energy. Thus option A is correct.
What is the function of catalase ?Catalase is a common enzyme present in all living organisms.
These are tetramer molecule consisting of four polypeptide chains, each of these chains are over 500 amino acids.
In mammal it is found in liver and contains four iron-containing heme groups that allow the enzyme to react with hydrogen peroxide.
In mammalian cell, Catalase involve in decomposition of most toxic substance called hydrogen peroxide into less toxic products like water and oxygen.
It protect the cell from oxidative damage by reactive oxygen species.
The optimum pH and optimum temperature for the activity of this enzyme ranges from four and eleven depending on the species.
Thus option A is correct.
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what's the name of a chemical compound that cells use too and energy
Answer:
Adenosine triphosphate (ATP)
Explanation:
a chemical compound cells use to store and release energy. An ATP molecule consists of adenine, the sugar ribose, and three phosphate groups.
Answer:
Adenosine triphosphate (ATP) is a chemical compound cells use to store and release energy. An ATP molecule consists of adenine, the sugar ribose, and three phosphate groups.
An example of two organisms living
together is...
A. a bird gliding on wind currents.
B. a flower opening in the morning.
C. a dandelion growing in your lawn.
Answer:
c
i think
Explanation:
What are the letters of the anticodon that should be in the three boxes labeled “Question #18” in the drawing below?
Worth 20 points
Pleas help
Answer:
in high pressure it moves counterclockwise in low pressure it moves clockwise
Explanation:
Causes a mutation that is the basis for AZT, the antiviral drug used to treat HIV infections Group of answer choices UV light nitrous acid ionizing radiation benzpyrene base analog
Answer:
Ionizing radiation.
Explanation:
Mutation is the sudden change that is occur by exposing cells to the ionized radiation which change the genetic makeup of the cell. Due to mutation, the cell does not perform its normal function like before the mutation so when the mutation occurs in the cell, the genetic or DNA makeup is changed which make the environment unfavorable for the HIV virus and the virus can not cause any infection in the cell.
Not too sure and don't wanna get it wrong
Help ASAP please! Which fuels are derived from organic matter?
Energy sources from the ocean that are derived from once-living organic matter include ________ and hydrocarbons.
The answer is a fill in the blank.
Answer:Fossil Fuels
Explanation:
Answer:
Biofuels
Explanation:
I just took the test on plato and it was correct :)
Which of the following eat producer organisms in a food chain?
A. quarternary consumer
B. tertiary consumer
C. primary consumer
D. secondary consumer
Answer:
a
Explanation:
quarternary consumer
beautiful clownfish named Bozo, a common salt water fish. Zara already has a tank with goldfish at home. Use your knowledge of diffusion & osmosis to tell Zara how to take care of Bozo.
Answer:
See the answer below
Explanation:
Zara should keep the clownfish and the goldfish in separate tanks - the goldfish in a freshwater tank and the clownfish in a salt water tank.
If the goldfish is kept in a salt water tank instead of freshwater, it may die due to dehydration because the salt water would be hypertonic to the cells of the fish. Water would move osmotically from the cells of the fish into the surrounding water and the fish may eventually die due to dehydration.
If the clownfish is kept in freshwater instead of salt water, it may die due to excessive water. The freshwater would be hypotonic to the cells of the fish and water would move osmotically from the surrounding water into the cells of the fish. Eventually, the cells would become turgid and may start lysing, leading to the death of the fish.
Green plants can make glucose.
Plants need energy to make glucose.
How do plants get this energy?
Answer:
atp or solar energy or from the sun
Explanation:
Describe the nitrogen cycle. How do organisms obtain nitrogen? (minimum 5 sentences) ILL GIVE BRAINLIEST
Answer: Plants, from their roots, suck up nitrogen compounds. These compounds are obtained by animals as they consume plants. The nitrogen compounds in the organic matter re-enter the soil when plants and animals die or when animals excrete waste, where they are broken down by microorganisms, called decomposers.
What are the lines in leaves
Answer:
Veins – The blackish lines in the leaf blade are called veins. The largest black line is the leaf's single “midvein,” running from the petiole to the leaf tip, the smaller blackish lines branching off the midvein are “secondary veins”
4. If a Red (RR) and White flower (WW) were crossbred, resulting in 100% RW, what phenotype(s) would been seen in the RW genotype according to the rules of codominance?
Answer:
Red and white in the flowers.
Explanation:
The petals should be a mix of red and white together. This may come out as dots, swirls of colors, or multiple petals of each color.
The passing of traits from parents to offspring.
A.
Genetics
B.
Replication
C.
Gene Expression
D.
Inheritance
Explanation:
The passing of traits from parents to offspring is Inheritance (D).
In erythroblastosis fetalis, only pregnant women who are ____ must be treated with injections to prevent their antibodies from attacking their baby s red blood cells
Answer:
Rh-negative
Explanation:
Erythroblastosis fetalis is a clinical condition whereby maternal antibodies begin to attack the fetal red blood cells due to incompatibility in the Rh of mother and fetus. Rh, which stands for Rhesus factor, can either be positive (Rh+) or negative (Rh-).
However, this condition (erythroblastosis fetalis) occurs in mothers/women who are Rh-negative. When an Rh- mother carries a fetus that is Rh+, the antibodies in the white blood cells of the mother identifies the blood cells of the fetus as FOREIGN, hence, begin to attack it.
However, one preventive measure is that pregnant women who are Rh-NEGATIVE must be treated with injections called Rh immunoglobulin to prevent their antibodies from attacking their baby's red blood cells.
how much does Biomass cost?
Answer:
In the United States, direct combustion is the most common method of producing heat from biomass. Small-scale biomass electric plants have installed costs of $3,000 to $4,000 per kW, and a levelized cost of energy of $0.8 to $0.15 per kilowatt hour (kWh).
Explanation:
i got this off of a website dont report mhe
Answer:
3,000 to $4,000 per kW
Explanation:
Name one part only human cells have
The component that is specific to the human cells is the genetic material.(46 chromosomes)
The jellylike substance that holds everything in place inside all cells is called the....
Answer:
Cytoplasm
Explanation:
Answer:
Cytoplasm
Explanation:
Cytoplasm is the semi fluid gel like substance of a cell that is present within the cellular membranes and surrounds the nucleus.
(I need help on math so pls lmk if your willing to help)
During DNA replication, a complementary strand of DNA is made for each original DNA strand. Thus if a portion of the original strand is tcga actca, then the new strand will be
Answer:
agcttgagt
Explanation:
DNA is a double helix molecule composed of two complementary DNA strands which are in turn composed of four different nucleotide bases: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). In the DNA molecule, G and C are bound together as a base pair, while A and T are bound together as another base pair. This complementary base pairing structure means that both DNA strands are complementary to each other. In this case, since the sequence of one strand is "TCGAACTCA", the complementary DNA strand would have the sequence "AGCTTGAGT".
HELPP me please I’ll give brainliest if two people answer!!!!