Facilitated diffusion is the process by which molecules diffuse across the plasma membrane with the assistance of membrane proteins like channels and carriers.
What main function of facilitated diffusion in membrane?Diffusion is the flow of chemicals across a biological membrane from an area of higher concentration to one of lower concentration, and it is facilitated by the usage of a transport molecule.
Because substances move in the direction of their concentration gradient, chemical energy is not directly needed.
Solutes diffuse through transport proteins in the plasma membrane when their diffusion is facilitated. A form of passive transport is facilitated diffusion.
Therefore, facilitated diffusion across a biological membrane requires transport proteins and moves a substance down its concentration gradient.
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What enzyme unwinds or unzips the
parent strand in DNA?
Answer:
Helicase
Explanation:
To begin DNA replication, unwinding enzymes called DNA helicases cause the two parent DNA strands to unwind and separate from one another.
If a coil is placed in pure water (0% concentration), using osmosis describe what will happen. Keep in mind there are concentrations of solutes in cells
Red blood cells will osmotically absorb water from a solution (such as pure water) that has a greater water concentration than their contents, swell up, and rupture. A higher concentration of water outside the cell will diffuse into a lower concentration of water inside the cell.
What impact does water concentration have on osmosis?Osmosis happens when there is an inverse relationship between the concentration of solutes and the gradient in water concentration across the membrane. Osmosis continues to take place until the water concentration gradient is zero or the hydrostatic pressure of the water equals the osmotic pressure.
An animal cell would swell and explode if it were put in a drop of 100 percent pure water. This would occur because osmosis is permitted by the semi-permeable nature of the cell membrane.
At normal pressure and temperature, the water potential of pure water is always assumed to be zero. The kinetic energy that water molecules contain may be used to explain it.
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What adaptation allows the conifers to grow so much taller than the ferns?
The adaptation that allows the conifers to grow so much taller than the ferns is the presence of vascular tissues such as the xylem and phloem.
What are the xylem and phloem?The xylem and phloem are two fundamental plant tissues only present in higher plants that are required to transport nutrient products in arborous vascular plants such as angiosperms and gymnosperms.
Therefore, with this data, we can see that the xylem and phloem are two plant tissues that play essential roles in transporting nutrients to all plan tissues in higher vascular plants.
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4. Identify What forces
act on the dead organisms in
sediment, transforming these
materials into oil and gas?
cocos
Natural gas may also be produced from organic material at high enough pressure. The two basic factors that convert biological matter into fossil fuels are heat and pressure.
What transforms extinct animals into crude oil and natural gas?Algae and plants inhabited shallow oceans millions of years ago. The organic material was buried when it perished and sank to the bottom, where it mingled with other materials. The remnants of these animals were converted into fossil fuels over millions of years under extreme pressure and heat.
Layers of clay and sand have been covering dead creatures that were buried in the water millions of years ago. These decomposing organisms became petroleum and natural gas as a result of the lack of air, the high temperature, and the high pressure.
Only carbon and hydrogen are necessary for the conversion of organic matter (OM) into petroleum.
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A hockey puck with a mass of 0.12 kg is traveling across the ice at a velocity of 150 m/s downfield. What is the momentum of the
hockey puck? (1 point)
OM 18 kg* m/s
OP 8*10-4 kg * m/s
OP 18 N
O P = 18 kg* m/s
Hey there! Lets begin!
1. Which of the following best describes the sum of all forces acting on an object?
Net force, which is a vector sum.______________________________________________________
2. Suppose a man is sitting on a chair and exerting 100 N of force downward, while a spring beneath the chair exerts 150 N of force upward. If you assign a negative value to the downward force, what is the net force of this system?
50 N_______________________________________________________
3. During a game of pool, a cue ball travels to the left with 70 N of force and collides with the four ball moving with a force of 50 N to the right. If you assign a negative value to the force moving to the right, what is the net force of this system?
20 N_______________________________________________________
4. Recall that the formula for momentum is:
P=mv
Which of the following correctly shows momentum being calculated?
45 kg * m/s = (9 kg)(5 m/s)_______________________________________________________
5. A hockey puck with a mass of 0.12 kg is traveling across the ice at a velocity of 150 m/s downfield. What is the momentum of the hockey puck?
P = 18 kg * m/s_______________________________________________________
Hope this helps! Good luck!
Answer:
(Question) Which of the following best describes the sum of all forces acting on an object?
(Answer) net force, which is a vector sum
(Question) Suppose a man is sitting on a chair and exerting 100 N of force downward, while a spring beneath the chair exerts 150 N of force upward. If you assign a negative value to the downward force, what is the net force of this system?
(Answer) 50 N
(Question) During a game of pool, a cue ball travels to the left with 70 N of force and collides with the four ball moving with a force of 50 N to the right. If you assign a negative value to the force moving to the right, what is the net force of this system?
(Answer) 20 N
(Question) Recall that the formula for momentum is: P=mv Which of the following correctly shows momentum being calculated?
(Answer) 45 kg*m/s=(9 kg) (5 m/s)
(Question) A hockey puck with a mass of 0.12 kg is traveling across the ice at a velocity of 150 m/s downfield. What is the momentum of the hockey puck?
(Answer) P=18 kg*m/s
Explanation:
I just finished the quick check UwU
Two life functions performed by all living organisms are nutrition and respiration.
Identify two other life functions that are essential for the survival of all living organisms.
Explain how each of the two life functions you identified maintains homeostasis. Life function 1:
Life function 2:
Life processes are the fundamental tasks carried out by living things to maintain their own existence. Apart from nutrition and respiratIon other live functions performed by living things include; Excretion and MOVEMENT
Relationship between life functions and homeostasis
Homeostasis is a self-regulating process that controls internal factors needed to maintain life. In other terms, homeostasis is a system that maintains a constant environment inside an organism despite changes in the outside.
Excretion
All living things produce poisonous materials as a result of various metabolic processes. These wastes are eliminated from the body by excretion. Animals mostly create carbon dioxide and nitrogenous wastes as waste products (ammonia, urea, uric acid).
In order to maintain internal stability waste Produced by cellular metabolism are excreted
MOVEMENT
Mammals, fish, amphibians, birds, advanced invertebrates, and reptiles (excluding snakes) have organs for locomotion. Animals move around in order to find food, avoid predators, and survive unfavorable environmental conditions.
Joints and muscle contractions allow animals to move their body parts
Some organisms, like the tentacles of a sea anemone, are fixed in position but can move their individual sections.
Plants use their roots to cling to the soil.
DURING MOVEMENT living thing especially animals make use of the Nervous System to carry out homeostasis such as the Cranial nerves, spinal nerve which helps to transport sensory data from the CNS to motor impulses, the Cerebrum which helps to maintain consciousness, creativity, thinking, morals, and memory, Mindfulness, originality, ideas,
In conclusion living thing need to be stable while carrying out life function, other functions include, sensitivity ,growth, reproduction
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Here I have a list of NATURAL CAUSES of deforestation Can you list anything else?
Some natural causes of deforestation are:
- Earthquakes (cutting down trees when in the higher scales);
- Biological pests;
- Dessertification process;
- Natural climates changes (seasonality and geological change can lead to natural climate change).
The warmest climate according to the Koppen climate classification system is Type ____.DAEC
The warmest climate is A because in this classification type A is the one that includes tropical climates (this climate extends northward and southward from the equator).
The disappearance of the Mayan civilization from the Yucatan Peninsula in Mexico is a mystery that archacologists have been trying to solve. Scientists have collected data from theformations in caves, sediment, and tree rings. Analysis of the data resulted in the following graphs.Which explanation is supported by the data as to the disappearance of the Mayan people?A.The increase in sulfur in the sediment caused acid rain. Acid rain killed all of the crops. Without an ample source of food, the Mayan population decreased as a result of starvation.B. Pure oxygen is deadly to living organisms. The rise in oxygen levels caused the surrounding organisms to die. This left any surviving Mayan people without a source of food.C.The Mesoamerican peoples of the Postclassic era fought with and defeated the Mayans. The Mayan population was greatly reduced. Any remaining Mayans assimilated with thevictorious peoples.D. A change in the regional climate resulting in a period of drought, as indicated by the increase in oxygen and sulfur in the tested samples, caused the failure of the Mayan civilization.
The correct option is D. A change in the regional climate resulting in a period of drought, as indicated by the increase in oxygen and sulfur in the tested samples, caused the failure of the Mayan civilization. Both variables, oxygen and sulfur, increased prior to Mayan collapse. Their increase could underlie climatic changes that led to Mayan people disappearance.
Read each example and decide what the resulting effect on the gene pool of that population would be.
A zebra migrates to join a different herd of zebras.
Competition for sunlight leads to taller trees.
The DNA of a snake changes to make its venom stronger.
A grassfire randomly sweeps through a population of buffalo
and kills most of the animals.
Being a migratory mammal, the zebra moves to several herds as it acquires newer alleles from other populations.
Taller trees result from the fight for sunlight, which may benefit particular alleles. New alleles may be produced from DNA when a snake's DNA is altered to make it deadly. Buffalo rushed across the grass, picking random alleles.
What impact do changes in a population's gene pool have?The size of a population's gene pool is assumed to have some bearing on its capacity for adaptation and evolution. For instance, a population's potential for future adaptability to shifting environmental conditions may be increased by a broad and diversified gene pool.
Genetic variety can be increased by new genes and alleles being created as a result of gene duplication, mutation, or other events.
When individuals leave their family unit or herd to join other populations, this is known as gene flow in animals. New alleles are introduced into populations when people move in and out.
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Answer:
1. B
2. D
3. A
4. C
Explanation:
hope i helped :)
Ligament hold A. Bone to boneB. Bone to muscles C. Tendons to bonesD. Cartilage to tendons
Answer: A.
Explanation: A ligament is a fibrous tissue that connects bone to bone. Usually holds to serve as a structure together and keep them stable.
Each offspring must have 1 copy of each
chromosome, either S or s, T or t.
What possible combinations could form from this offspring?
The possible combinations form from an offspring in which parents have ST and st genotypes is SSTT, SSTt, SStt, SsTT, SsTt, ssTT, ssTt and sstt, it is supposing that S and T genes are not linked.
How genes are inherited in offspring?In offspring, genes are inherited as independent units in the case that genes are not located on the same chromosomes. This law is known as the principle of independent segregation.
In this case, parents may form all types of gamete combinations and therefore offspring may exhibit any combination.
Therefore, with this data, we can see that parents in this case may form different gamete combinations for S and T genes that will be inherited in offspring.
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is neurofibromatosis 1 a dominant or recessive trait?
Neurofibromatosis 1 has an autosomal dominant inheritance pattern.
Unlike other types of autosomal dominant conditions, for which one copy of the dominant gene is enough to express the trait/ sickness, for this condition the individual should carry both dominant alleles to trigger the formation of the tumors.
Which of the following decreases the life expectancy of a population?I. High infant mortalityII. Poor sanitationIII. Adequate healthcare
The correct answer is II. Poor sanitation. This increases transmission of infectious disease which harms life expectancy. In the worst cases it creates epidemics that decimate populations, like black death in the eighteen century.
If all planets were the same distance from the sun, which would have the largest gravitational force between itself and the sun? Why?
Answer: Jupiter
Explanation:
Jupiter has the greatest mass when compared with the other planets in the solar system. According to the attached gravity formula and considering the only variable is the mass of the planet in this example then it has the greatest gravitational force.
What is the name of the southern part of South America?
Answer:
I think Andes
Question #1
Long Text (essay)
Pretend you are a financial counselor and the Johnsons have come to you for help with constructing an estate plan. You will make
recommendations to them for an estate plan to protect and prepare themselves and their family in the event of their passing. Your
recommendations will take the form of a two-page report, listing areas of concern and action items.
Answer: An estate plan is a collection of documents and includes a will, guardianship designations, healthcare power of attorney, beneficiary designations, durable power of attorney, and a personal letter of intent, outlining your wishes, should you die or become incapacitated.
Explanation: i tryed my best
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How do humans obtain the minerals needed for the body to function properly?
A.They get them from the water they drink.
B.They take mineral supplements daily.
C.They eat small amounts of rocks to get what they need.
D.They eat healthy foods like meats, vegetable, fruits, and dairy
Answer:
Explanation:
You are supposed to pick D, but that does not eliminate B. Some people do take mineral supplements to keep their mineral needs balanced. Things like Magnesium, Iron Calcium, and others are not in every food you may choose has every ingredient you may need.
I think I would answer D, but don't be surprised if the poser of the question says it is B.
4. Which of the following is most true of fungi?O a They are single celledO b. They are eukaryotesO c They are multicelledO d. They are prokaryotes
The correct option is b. They are eukaryotes
What is the number of different genetic combinations available in a given gene pool?A) Genetic combinationsB) Genetic diversityC) Genetic variationD) Genetic assortment
The correct answer is B) Genetic diversity.
Genetic diversity i
Which statistical test is common
for genetics and tests observed
data against the probability of
those values?
A. standard deviation
B. chi-square test
C. ANOVA
The statistical test that is common for genetics and tests observed data against the probability of those values is the chi-square test.
A statistical technique called the chi-square test is used to compare actual outcomes with predictions. The goal of this test is to establish whether a discrepancy between observed and expected data is the result of chance or a correlation between the variables you are researching.
What is studied in genetics?
The study of genes and heredity, or how particular characteristics or traits are passed from parents to offspring as a result of changes in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or more molecules that support bodily function.
Therefore, the chi-square test is a statistical test that is common for genetics and tests observed data against the probability of those values.
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What scale is generally used to measure global temperatures?A. KelvinB. FahrenheitC. IsobarsD. Celsius
The correct answer is D. Celsius. Celsius scale to measure temperature is an international standard.
The infraspinatus muscle is included in the __________ muscles.
The infraspinatus muscle is included in the rotator cuff muscles.
Infraspinatus muscle are found on the dorsal surface of the scapula, deep to trapezius, and parts of the deltoid. The infraspinatus is a portion of the rotator cuff muscles composed of the supraspinatus, infraspinatus, teres minor, and subscapularis. These muscles act to stabilize the glenohumeral joint.
The supraspinatus muscle abducts the upper arm. The infraspinatus muscle externally rotates the upper arm at the shoulder. The supraspinatus muscle originates from the supraspinous fossa, which is a concave surface at the top of the scapula. The supraspinatus muscle tendon passes laterally beneath the cover of the acromion.
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i have to make a model for class and i don’t understand anything i have to do, can anyone help me complete the model?Part 2 and 3.
Answer: I think maybe you could make an illustration about the process of photosynthesis and cellular respiration. Maybe you could print some images like the sun, leaves, and molecules. In the molecules like oxygen, carbon dioxide, water, you could just make small circles. You can put it all together by adding arrows to show the next step of the process.
2. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP. Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. The bonds are broken in glucose, and this releases the chemical energy that was stored in the glucose bonds. Carbon dioxide and water are created as byproducts. This process occurs in mitochondria.
3. In the two processes, we can see that the products of one process are reactants of another – and vice versa. Glucose and oxygen – which happen to be the products of photosynthesis, are required to facilitate cellular respiration, while carbon dioxide – which is a by-product of cellular respiration, is required to facilitate the process of photosynthesis.
Why do fungi not produce egg or sperm cells?
There are no other organisms that can help fungi pollinate.
Fungi do not produce flowers or cones to make egg or sperm cells.
Fungi reproduce using spores as their reproductive cells.
Fungi are not large enough to create egg or sperm cells.
Fungi not produce egg or sperm cells because Fungi do not produce flowers or cones to make egg or sperm cells, and Fungi reproduce using spores as their reproductive cells.
Fungi- Along with plants, animals, protozoa, & monera, fungi are members of the kingdom Fungi, which is composed of eukaryotic organisms. The variety of fungi is astounding, and some of the most typical types include yeast, molds, truffles, & mushrooms.
Spores- Certain fungus, plants (moss, ferns), & bacteria create spores, which are cells. Reproduction involves spores. As a form of defense, certain bacteria produce spores. Spore walls are very thick. They can withstand extreme climatic conditions including extreme temps, humidity, and others.
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HELP PLEASEEEEEEEE!!!!!!!!!!!
Answer:
For B-
PP would have purple flowers
Pp would also have purple flowers
pp would have white flowers
For C-
Bb would not have a bobtail
bb would have a bobtail
BB would not have a bobtail present
Explanation: Trust me, bro.
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1. What lobe of the brain is located at the back of your head?
A.The temporal lobe of the cerebrum
B.The temporal lobe of the cerebellum
C.The occipital lobe of the cerebrum
D.The occipital lobe of the cerebellum
Answer: C
Explanation:
The occipital lobe is one of the four major lobes of the cerebral cortex and it sits at the back of the brain, therefore at the back of the head.
so the answer is C. The occipital lobe of the cerebrum
The occipital lobe of the cerebrum is located at the back of the head. Therefore, option C is correct.
The occipital lobe is located at the back of the head and is part of the cerebrum, which is the largest and most highly developed part of the brain. The occipital lobe is primarily responsible for processing visual information, including visual perception, interpretation of images, and color recognition.
It plays a crucial role in vision and is situated at the posterior (back) region of the cerebrum. It also contains the primary visual cortex, which is responsible for the initial processing of visual stimuli received from the eyes.
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The graph below shows the number of occupiedbald eagle nesting in North America between1960 and 2007.Which human activity most likely had the greatestinfluence on the trends shown in the graph?A. Breeding eagles in captivityB. Allowing the hunting of eagle predators innational forestsC. Releasing eagles into North American forestsfrom other continentsD.Conservation efforts, including a ban oncertain pesticides
The correct answer is D. Conservation efforts, including a ban on certain pesticides. Conservation efforts imply hunting restrictions, as well as delimiting extensive areas for their conservation and releasing captive reared individuals in its natural habitat.
suppose that you found out that a mating between a black animal and a brown animal produced all black offspring.Propose a hypothesis to explain the color of the offspring
If a mating between a black animal and a brown animal produced all black offspring, then the most likely hypothesis is that color is controlled by complete dominance and black animal parents are homozygous for this trait.
What is complete dominance?In genetics, complete dominance refers to the phenomenon for which one allele of a gene masks another allele of the same locus in order to express a given trait.
Therefore, with this data, we can see that complete dominance is caused when an allele masks the expression of the recessive allele in heterozygous individuals.
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Which of the following does not have high potential energy? atpnitrogenglucoseconcentration gradientelectrical/ion gradient
The potential energy is the energy that depends upon relative position or various part of a system and the potential charge that a molecule have. The molecules of ATP, nitrogen, and glucose have high potential energy, as well as the ion gradient in a cell membrane, however the concentration gradient does not require neregy input, since the energy stored in it is the one used to balance the concentrations.