A symporter is a transporter molecule that moves two or more molecules in the same direction across the membrane.
What are symporters?
Symporters, often known as cotransporters, are a type of transporter that moves two or more molecules across the membrane in the same direction. Symporters are classified as secondary active transporters since they do not directly use ATP as an energy source, instead relying on a concentration gradient generated by the primary active transport of another molecule, such as sodium.
These transport only one kind of molecule. Symporters: These move two or more molecules across the membrane in the same direction.
How do symporters differ from antiporters?
Antiporters, as opposed to symporters, move molecules in the opposite direction. They transport two or more molecules in opposite directions across the membrane. Sodium-potassium pumps are examples of antiporters that generate an ion gradient, which can be used by symporters to transport other molecules across the membrane.
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the histology of tissue how tissues are specialised and adapted to carry out a particular function. using your biological drawing and any other sources showing how tissues are adapted for particular functions, explain each of the following statements: The histology of compact hard bone shows adaptations that are related to the function of: •bone for storage of calcium• the skeleton for support of the body
Answer:
•bone for storage of calcium: the body only gets the calcium it needs through the food you eat, or from supplements. Bones store calcium, a mineral that can be released into the bloodstream when calcium is needed elsewhere in the body.
The amounts of some vitamins and minerals we take in, especially vitamin D and calcium, directly affect the amount of calcium we store in our bones.
• the skeleton for support of the body: bones provide support for our bodies and help give them shape. Although they are very light, the bones are strong enough to support our full weight.
1. which of the following statement describe how the prokaryotic cells appear compared to the eukaryotic cells? A. the prokaryotic cells have cell membrane will the aquatic cells do not. B. the prokaryotic cells have a nucleus while the aquatic cells do not. C.the prokaryotic cells are much smaller than the aquatic cells D. the prokaryotic cells have cytoplasm and ecori attic cells do not.
2. Does a prokaryotic cell have a cell wall?
The prokaryotic cells appear much smaller than the aquatic cells when compared to the eukaryotic cells.
Prokaryotes are one of the oldest groups of living organisms on the planet, with fossil records dating back nearly 3.5 billion years. Prokaryotic cells are those that lack a true nucleus or membrane-bound organelles. These are microbes with one cell. Bacteria and Archaea are examples of prokaryotes, while cyanobacteria are examples of photosynthetic prokaryotes.
Eukaryotes are larger and more complex than prokaryotes. Except for Kingdom Monera, they include almost all of the major kingdoms.
Eukaryotes have a cell wall, which supports and protects the plasma membrane. The plasma membrane surrounds the cell and regulates the entry and exit of various substances.
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Meditation is a practice of sitting still and quiet for minutes or even hours. It has been practiced for thousands of years and is even a part of religious practices for some people. Carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that helps people connect with their current surroundings and activities.
Are claims about the effects of meditation most likely scientific or pseudoscientific?
(Answer:) this is most likely to be scientific, (Explanation:) because, if you look at the question it says 'are the effects of medditadion scientific?... ect', and if you look back on your description of meditation, in the third sentence, they certainly state information based on scientific study!
Answer:
scientificExplanation:, because observations of brain growth and chemicals are made carefully and repeatedly
Just took the test.
A theory that the cell is the fundamental structural and functional unit of living matter
what happened when a grapes is placed in a hypotonic solution
Answer:
It will swell
Explanation:
water will move down the concentration gradient from high concentration to low concentration (causing it to swell)
Answer:
When the grapes is placed in water,a water hypotonic solution,water will move down the concentration gradient from high concentration(the water)to low concentration(in the grapes),causing in to swell.
What are prostaglandins?
a) steroids modified
b) amino acids
c) carbohydrates
d) modified
e) fatty acids
f) peptides or proteins
They are fatty acids. Prostaglandins are the group of physiologically active lipid compounds called eicosanoids which having diverse hormones like effects in animals.
They are unsaturated fatty acids that contains cyclopentane ring and drives from 20-carbon , poly-saturated fatty acid precursor arachidnoic acid.During pain there are high concentration can causes by direct action upon nerve endings.
The estrogen based food is consume, the more likely uterine lining become abnormally thick. They play very important role in generation of the inflammatory response. Prostanglandins biosynthesis is significantly increased in inflamed tissue and they contribute to the development of cardinal of acute inflammation.
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Explain how an unbalanced diet and lack of exercise could lead to an atheroma formation
Answer:
An unbalanced diet and lack of exercise can lead to high levels of bad cholesterol (LDL) and triglycerides in the blood, which can contribute to the formation of an atheroma. An atheroma is a fatty deposit that forms within the walls of arteries.
When levels of LDL and triglycerides are high, they can accumulate in the walls of blood vessels, causing plaque buildup. This buildup can lead to atherosclerosis, which is the hardening and narrowing of arteries over time. As the plaque buildup increases, the diameter of the artery becomes smaller, and the blood flow to vital organs, like the heart and brain, is reduced.
Over time, the atheroma can grow and become unstable. When it ruptures, blood clots can form on the surface, further blocking blood flow and possibly leading to a heart attack or stroke.
A balanced diet and regular physical activity can help maintain healthy blood cholesterol and triglyceride levels, reducing the risk of atheroma formation. A diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats can help lower bad cholesterol levels. Exercise helps increase good cholesterol (HDL) levels, which helps remove excess bad cholesterol from the bloodstream.
Which of the following is a function of the cell wall? (from khan academy~ need asap~ will make brainiest)
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
To package proteins
(Choice B)
B
To give the cell a rigid structure
(Choice C)
C
To carry out photosynthesis
(Choice D)
D
To provide energy for the cell
According to the research, the correct option is (Choice B). A function of the cell wall is to give the cell a rigid structure.
What is the cell wall?It refers to an extracellular structure composed of proteins that has an important structural role in prokaryotic cells and plant cells.
In this sense, they serve as mechanical support and provide rigidity to the cell, which in turn allows it to withstand variations in tension, which protects the content of the cell and is responsible for the mediation between the cell and its environment.
Therefore, we can conclude that according to the research, the correct option is (Choice B). A function of the cell wall is to give the cell a rigid structure.
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Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?
They both contain three lone pairs of electrons around the central atom.
They both contain three atoms around the central atom.
The central atom of the trigonal planar molecule has two lone pairs around it, but the central atom of the trigonal pyramidal molecule has only one.
The central atom of the trigonal planar molecule has two atoms around it, but the central atom of the trigonal pyramidal molecule has only one.
The statement that best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape is as follows: They both contain three atoms around the central atom (option B).
What is hybridisation in chemistry?Hybridisation is the linear combination of atomic orbitals in a molecule to form hybrid orbitals. A chemical compound can possess either a trigonal pyramidal shape or trigonal planar shape.
Trigonal pyramidal is a chemical form that occurs when the central atom in the molecule has three bonds and one lone pair. Sp³ hybridization occurs at the centre atom of molecules with tetrahedral electron pair geometries. The molecule ammonia has a trigonal pyramidal shape.
A trigonal planar molecular geometry compound has a centre atom that is bonded to three additional atoms or groups. The three groups to which it is connected form a triangle around the core atom, with bond angles of 120 degrees, because it has no lone pairs of electron pairs.
The major difference between these two molecular geometry is that trigonal planar geometry has no lone pair of electrons while trigonal pyramidal geometry has lone pair of electrons.
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why mitosis is important to every living thing?
Which of the following is an example where natural selection is most likely
to occur?
Short-legged lizards can outcompete the long-legged lizards for
resources on an island
A population of snails with different shell colors all have an
equal chance of surviving and reproducing
A human only plants seeds from the five spiciest chili peppers in
their garden each year
A person lifts weights so they can pass the trait of large muscles
down to their future offspring
The example where natural selection is most likely to occur is "Short-legged lizards can outcompete the long-legged lizards for resources on an island."
Natural selection is a fundamental mechanism of evolution in which certain traits become more or less common in a population over time. It occurs when certain individuals possess advantageous traits that increase their chances of survival and reproduction, leading to the transmission of those traits to future generations.
In the case of the short-legged lizards outcompeting long-legged lizards for resources on an island, natural selection is likely to occur. Short-legged lizards may have an advantage in accessing or acquiring resources such as food, shelter, or mates. Their ability to compete more effectively in these areas increases their chances of surviving and reproducing compared to the long-legged lizards.
Over time, the short-legged lizards will pass on their genetic traits associated with short legs to their offspring, while the long-legged lizards will be less successful in reproducing. This differential reproductive success leads to a gradual increase in the frequency of short-legged lizards in the population. Eventually, the population may become dominated by short-legged lizards due to their competitive advantage.
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Which gland is named for a nearby prominent cartilage?.
Answer:
thyroid cartilage I think
Explanation:
The thyroid cartilage is a hyaline cartilage structure that sits in front of the larynx and above the thyroid gland. The cartilage is composed of two halves, which meet in the middle at a peak called the laryngeal prominence, also called the Adam's apple.
Which type of muscle tissue is controlled by pacemaker cells?
Smooth muscle tissue is controlled by pacemaker cells. acemaker cells are responsible for initiating and regulating contractions in smooth muscle tissue.
These cells are found in the walls of organs, such as the stomach, intestines, bladder, and blood vessels. They are known for their ability to generate rhythmic electrical signals that stimulate the muscle fibers to contract and relax in a coordinated manner.
Smooth muscle tissue is involuntary, meaning it is not under conscious control. It is found in the walls of many internal organs, such as the digestive tract, blood vessels, and reproductive organs.
This type of muscle tissue is characterized by its spindle-shaped cells, lack of striations, and single central nucleus.Smooth muscle tissue plays an important role in the body by controlling the movement of various substances, such as food, blood, and waste products, throughout the body.
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The eon is divided into three shorter eras (Paleozoic, Mesozoic, and Cenozoic) of varying lengths based on the characteristics of their fossils. a. Archean b. Proterozoic c. Phanerozoic No answer text provided.
The eon is divided into three shorter eras (Paleozoic, Mesozoic, and Cenozoic) of varying lengths based on the characteristics of their fossils. These eras belong to the Phanerozoic eon.
An era is a geological timescale unit that is longer than a period and shorter than an eon. Eras are generally defined by their characteristic rock layers and fossils. Eras are frequently used to evaluate geological time periods and are defined by significant changes in climate and the environment, as well as the evolution and proliferation of various organisms.
There are three eras within the Phanerozoic eon, which is separated from the Precambrian eon by the Phanerozoic–Precambrian boundary. These eras are the Paleozoic era, the Mesozoic era, and the Cenozoic era.The Paleozoic era, which lasted from 541 to 252 million years ago, is characterized by the appearance of hard-shelled invertebrate organisms and fish.
The development of land plants is also a feature of this period. The end of this era is marked by the largest extinction event in Earth's history.The Mesozoic era, which lasted from 252 to 66 million years ago, is characterized by the rise of the dinosaurs and their eventual extinction, as well as the appearance of birds and mammals.
This period is divided into three periods: the Triassic, the Jurassic, and the Cretaceous. The Cenozoic era, which began 66 million years ago and continues to the present day, is characterized by the rise of mammals and the eventual emergence of humans. This era is divided into two periods: the Tertiary and the Quaternary.
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A population of 2000 seals produces 950 young in one year. In the same period of time, 150 seals die. If 50 seals leave the population, and 30 seals join the population, what is the overall population change of this seal population?
The total population change of this seal population is 780.
What is Population change?Population change refers to the difference in size of a population over a
given period of time which is usually one year.
Population size = 2,000
Offspring= 950
Death = 150
Immigration= 30
Emigration= 50
Population change+ Offspring + Immigration - Death - Emigration
2000+ 950+ 30 - 150 - 50 = 2,780
Population change= Final population- Initial population
=2780 - 2000
=780
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carbon from glucose is essential for the formation of amino acids. which process is responsible for the production of glucose in plants?(1 point) citric acid cycle citric acid cycle dehydration synthesis dehydration synthesis photosynthesis photosynthesis glycolysis
Carbon from glucose is essential for the formation of amino acids the process which is responsible for the production of glucose in plants is photosynthesis.
Photosynthesis is the process by which plants or other organisms transforms light energy into chemical energy. During the process of photosynthesis, plants need three basic things to live: water, sunlight and carbon dioxide.
Photosynthesis is the process by which a plant produces its food using energy from sunlight, carbon dioxide from the air and water from the soil. The word photosynthesis can be separated to make two smaller words: ‘photo’ which means light ‘synthesis’ which means putting together
In this process, light energy from the Sun is absorbed by the green substance, called chlorophyll, present in leaves. This energy allows the production of glucose (food) by the reaction between carbon dioxide and water. Oxygen is also produced as a by-product.
Carbon dioxide + Water → Glucose + Oxygen
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which is structure is correctly paired with its ploidy level? group of answer choices megaspore: diploid microsporangium: haploid megasporocyte: diploid microspore: diploid
The ploidy level is correctly paired with
a. microsporangium: haploid
This is because the microsporangium as a spore is haploid cell but it is derived from a diploid cell.
Here megaspore should be haploid
Microspore: haploid
Megasporocyte: haploid
Hence the correct answer is a. Microsporangium: haploid.
What are the different ploidy levels of an ovule?
The nucellus, a collection of parenchymatous cells, makes up the ovule's body. comparable to megasporangium (2n). A diploid(2n) cell called a megaspore mother cell, also known as a megasporocyte, goes through meiosis to create a linear tetrad of four haploid megaspores (n). The only functional megaspore often found is the chalazal megaspore, with the other three degenerating.
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A spring was at its resting position where it is attached to a wall at its left side and a block at its right side as shown below. The spring constant is k=75.0\,\dfrac{\text N}{\text m}k=75.0
m
N
k, equals, 75, point, 0, start fraction, start text, N, end text, divided by, start text, m, end text, end fraction. The block is moved leftwards and the spring's right end is displaced from the position of 0.250\,\text m0.250m0, point, 250, start text, m, end text to 0.150\,\text m0.150m0, point, 150, start text, m, end text where it is held in place. All positions are measured from the origin OOO of the wall.
Answer:
The force of spring will be "3.75 N". The further explanation is given below.
Explanation:
The given values are:
Spring constant, K = 75.0 N/m
x₁ = 0.200 m
x₂ = 0.150 m
So that,
⇒ \(x=x_{1}-x_{2}\)
⇒ \(=0.200-0.15\)
⇒ \(=0.05 \ m\)
Now,
Force of spring will be:
⇒ \(F=K\times x\)
On putting the estimated values, we get
⇒ \(=75\times 0.05\)
⇒ \(=3.75 \ N\)
Answer:
−8.25N
Explanation:
Hooke’s law says the restorative spring force is directly proportional to the change of the spring length x on top, but is opposite in direction to the change in spring length.
in which procedure for cardiac diagnosis are radiopaque catheters placed in a peripheral blood vessel and advanced into the heart to measure pressures and oxygen levels in heart chambers?
The procedure you are referring to is called cardiac catheterization. In cardiac catheterization, radiopaque catheters (also known as angiographic catheters) are inserted into a peripheral blood vessel, typically through the femoral artery or radial artery, and advanced into the heart.
This invasive diagnostic procedure allows for the measurement of pressures and oxygen levels in the different chambers of the heart, as well as the visualization of the coronary arteries and blood flow. Contrast dye may be injected through the catheter to enhance the visibility of the blood vessels and help identify any blockages or abnormalities.
Cardiac catheterization is commonly used to diagnose and evaluate various cardiac conditions, including coronary artery disease, heart valve abnormalities, and congenital heart defects.
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A mutation that occurs in a sperm cell has the potential of being passed on to the next generation. True or false
Answer:
true
Explanation:
a mutation and a sperm cell will pass on to the next generation because the jeans from the sperm cell are mutated and will
Fill in the blank
According to biologists _____ millions different species have been identified, but ____ of millions remain to be discovered. And _______________ new species are discovered every year.
Answer:
According to biologists 1.2 millions different species have been identified, but 8.7 of millions remain to be discovered. And 18,000 new species are discovered every year.
Explanation:
Hope it helped!
how do you think the endocrine system and the nervous system work together to control communication in the body?
Explanation:
Ans. They use the help of the brain and nerves
What unit of time on Earth is based on the rotation of the Earth?
A.day
B.hour
C.month
D.year
Answer:
year
Explanation: Every year the earth rotates one time so that is right.
how do you know you have understood cells topic
Answer:
“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”
Explanation:
A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.
All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the food into energy.
Cells are complex and their components perform various functions in an organism. They are of different shapes and sizes, pretty much like bricks of the buildings. Our body is made up of cells of different shapes and sizes.
Cells are similar to factories with different labourers and departments that work towards a common objective. Various types of cells perform different functions. Based on cellular structure, there are two types of cells:
1)Prokaryotes
2)Eukaryotes
Which of the following statements about flood mitigation projects in New Orleans is true?
A) The projects resulted in a lowering of taxes for residents of New Orleans and surrounding counties.
B) Only small projects were completed because it is cheaper to fund repairs for damages from flooding than it is to fund flood mitigation projects.
C) The new and improved flood prevention structures require ongoing funding in order to be monitored and maintained.
D) The city now relies primarily on evacuation plans rather than physical barriers in the event of flooding.
Answer:
C.The new and improved flood prevention structures require ongoing funding in order to be monitored and maintained.
Explanation:
Which of these facts provides the best support for the hypothesis that plants evolved from green algae?.
The fact that provides the best support for the hypothesis that plants evolved from green algae is the presence of similar photosynthetic pigments and organelles in both organisms.
Both green algae and plants possess chlorophyll a and b, which are essential for photosynthesis, the process of converting sunlight into chemical energy for growth and reproduction.
Additionally, they both have chloroplasts, which are specialized organelles where photosynthesis occurs. The presence of a double membrane surrounding chloroplasts in both green algae and plants further supports their evolutionary relationship. Moreover, both organisms store their energy as starch, a carbohydrate, within their cells.
Another supporting fact is the cell wall composition. Green algae and plants have cell walls predominantly made of cellulose, a complex carbohydrate that provides structural support. This similarity in cell wall structure indicates a common ancestry between the two groups.
Lastly, the genetic evidence strengthens this hypothesis. DNA sequence comparisons have revealed significant similarities between green algae and plants, especially in genes associated with photosynthesis and other essential cellular processes. Such genetic similarities provide strong evidence for a shared evolutionary history.
In conclusion, the presence of similar photosynthetic pigments and organelles, cell wall composition, and genetic evidence provide the best support for the hypothesis that plants evolved from green algae. These similarities indicate a shared ancestry and a gradual evolution of plants from their green algae ancestors.
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what is the biggest great white shark ever recorded
Answer:
19.7 FT.
Explanation:
According to experts, such as J. E. Randall, the largest, reliably measured Great White Shark, was 6.0 m (19.7 ft) in length, from Ledge Point in Western Australia
6. Theo wants to model the water cycle. What should he use as the source 7 points
of energy for the water cycle?
O A. a fan
B. a lamp
C. a pan of soil
D. a spray bottle
Other
This is a required question
Identifya controversial environmental issue in your community that fits into one of the following three major categories: resource depletion, pollution, or loss of biodiversity. Discuss how the issue is being addressed and whether or not the conflicts associated with “the tragedy of the commons” are affecting solutions to the problems.
A controversial environmental issue in my community is river pollution. that the city's sewage goes to the river in the wrong way, with that all life in that river is improper, the conflicts associated with the "tragedy of the commons" are affecting the solutions to the problems, because companies want to continue throwing pollution in the rivers but the population wants.
What is river pollution?Polluted rivers are those springs that receive in their waters all kinds of polluting residues such as chemical, physical and biological agents. They are harmful to soil, fauna, flora and human activities. Freshwater sources are vital for humans, but they receive a large number of pollutants.
With this information, we can conclude that Rivers are polluted by the contamination of organic waste, including human and animal excretions, and agricultural waste resulting from plant decomposition.
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Definition of fruits
Answer:
Fruit, the fleshy or dry ripened ovary of a flowering plant, enclosing the seed or seeds
Explanation:
Hope this helps