who should have access to your cells
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Which of the following statements is true about the diagram below A. H+ ions are moving into the cell by facilitated diffusion B. The concentration of H+ ions is increasing inside the cell C. H+ ions are moving out of the cell by active transport D. The H+ ions are moving down the concentration gradient
Answers
\(H^+\) ions are moving out of the cell by active transport. Option C.
What is active transport?Active transport is a form of cell transportation that requires the expedition of energy, usually in the form of ATP.
An example of active transport is ion transport across the cell membrane as depicted in the image. When materials are moved from the side of higher concentration to the side of lower concentration, the materials are moved along their concentration gradients.
When materials move from the side of a lower concentration to the side of a higher concentration, the materials are said to be moved against their concentration gradients.
From the image, one can see that \(H^+\) ions are moving from the cytoplasm across the cell membrane to the external environment. It can also be seen that this movement of ions requires ATP. Thus, it can be concluded that \(H^+\) ions are moving out of the cell by active transport.
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Since a pump carrier protein is carrying H+ from the lower-concentration side to the higher-concentration side using ATP, we can assume the true statement about the diagram is C) H+ ions are moving out of the cell by active transport.
What is active transport?Active transport is a cellular transmembrane type of transport together with passive transport and simple diffusion.
Active transport acts against the electrochemical gradient, so it does need energy to transport substances. It carries molecules from a low-concentration side of the membrane to a high-concentration side.
The energy used comes from ATP (Na-K bomb) or the membrane's electric potential.
The transmembrane proteins involved in active transport are Carrier proteins.
In the exposed image you can see
A higher concentration of H+ in the extracellular space.H+ being pumped against their electrochemical gradient (from the lower concentration side to the higher concentration side)ATP is mediating this transportA H+ pump is carrying H+.This is active transport. Option C.
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according to the fluid mosaic model,plasma membrane are mainly composed of phospholipids and proteins.Explain how structures S and T play the roles in the plasma membrane,which function as a selective barrier. please help me with this question
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Answer:
The plasma membrane is a thin layer of lipid molecules that surrounds the cell and separates the inside from the outside. The fluid mosaic model describes the structure of the plasma membrane as a two-layered structure of phospholipids with embedded proteins. This model explains how the structure of the plasma membrane allows it to act as a selective barrier, regulating the movement of substances in and out of the cell.
Structure S in the plasma membrane is represented by the phospholipids, which form a lipid bilayer with hydrophilic heads facing outwards and hydrophobic tails facing inwards. The hydrophilic heads are in contact with the extracellular fluid and intracellular fluid while the hydrophobic tails are in the middle of the membrane. The phospholipid bilayer provides a barrier that separates the inside and outside of the cell, restricting the movement of hydrophilic and large molecules through the membrane while allowing the passage of small and hydrophobic molecules.
Structure T represents the integral membrane proteins that are embedded in the lipid bilayer. These proteins have different functions, such as transport of molecules, cell signaling, and catalyzing chemical reactions. The proteins also contribute to the selective permeability of the membrane by regulating the movement of specific molecules in and out of the cell. For example, channels and carrier proteins regulate the movement of ions and larger molecules through the membrane while receptor proteins receive signals from the outside of the cell and relay them to the inside of the cell.
In summary, the plasma membrane is mainly composed of phospholipids and proteins according to the fluid mosaic model. The phospholipids form a lipid bilayer that acts as a barrier, while the proteins embedded in the bilayer regulate the selective permeability of the membrane by facilitating the movement of specific molecules in and out of the cell.
Explanation:
3. With regard to environmental management of waste
rock dumps, what is AMD, how is
it formed and how will you manage dump construction to minimize its
impact on the
environment? [6%]
Answers
AMD stands for Acid Mine Drainage. It is formed when sulfide minerals in rocks are exposed to air and water, resulting in the generation of sulfuric acid and dissolved metals. This acidic and metal-rich drainage can have detrimental effects on the environment, including water pollution and damage to aquatic ecosystems.
To manage dump construction and minimize the impact of AMD on the environment, several measures can be implemented:
Prevention: One of the primary approaches is to prevent or minimize the formation of AMD in the first place. This can be achieved by implementing proper waste management practices, including selecting suitable waste rock materials, limiting the exposure of sulfide minerals to air and water, and employing effective cover systems.
Neutralization: Implementing neutralization techniques can help mitigate the acidity of AMD. This involves treating the drainage with alkaline substances, such as lime or limestone, to raise the pH and reduce its harmful effects on the environment.
Containment: Constructing and maintaining effective containment systems is crucial to prevent AMD from infiltrating surrounding soils and water bodies. This can include using impermeable liners, such as clay or synthetic materials, to prevent the leaching of acidic drainage.
Water management: Proper water management is essential to control the movement and accumulation of AMD. This may involve implementing diversion channels, collection systems, and treatment facilities to contain and treat the acidic drainage before it enters the environment.
Monitoring and maintenance: Regular monitoring of water quality, pH levels, and metal concentrations is necessary to detect any potential AMD issues and take appropriate corrective measures. Ongoing maintenance and management of dump sites are crucial to ensure the effectiveness of preventive and mitigation measures.
AMD, or Acid Mine Drainage, refers to the acidic and metal-rich drainage that is formed when sulfide minerals, typically found in rocks associated with mining activities, come into contact with air and water. The exposure of sulfide minerals to oxygen and moisture leads to chemical reactions, resulting in the generation of sulfuric acid. This acid then dissolves metals present in the rocks, such as iron, zinc, and copper, which further contributes to the contamination of water bodies and soil.
The management of waste rock dumps is essential to minimize the impact of AMD on the environment. Dump construction should incorporate measures that aim to prevent the formation of AMD, neutralize its acidity, contain its spread, and manage water flow effectively. These strategies help to minimize the release of acid drainage and metals into the environment, protecting water quality and ecosystems.
The management of waste rock dumps is critical in mitigating the formation and impact of Acid Mine Drainage (AMD). By implementing preventive measures, neutralization techniques, containment systems, effective water management, and regular monitoring, the environmental impact of AMD can be minimized. Adhering to best practices and regulations ensures responsible waste management and helps safeguard water resources and ecosystems.
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just clarifying questions, how is there genetic variation from both parents in babies? does meiosis (for crossing over) occur before or after fertilization (egg and sperm combine to form zygote)? if its before, how is there combination of genes from both parents if crossing over (meiosis) doesnt occur after it gets chromosomes from parents ?
thank you!
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Genetic variation in babies is the result of the combination of genetic material from both parents during sexual reproduction. During sexual reproduction, specialized cells called gametes (sperm in males and eggs in females) are produced through meiosis.
Meiosis is a type of cell division that reduces the number of chromosomes in half, producing gametes that contain only one set of chromosomes (haploid). During meiosis, the chromosomes can exchange genetic material through a process called crossing over, which creates new combinations of genes on the chromosomes.
Meiosis (including crossing over) occurs before fertilization. The sperm and egg produced through meiosis each carry a unique combination of genetic material, resulting in genetic variation in the offspring.
When the sperm and egg combine during fertilization, they create a zygote that contains genetic material from both parents, resulting in even more genetic variation in the offspring.
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at the current rate of growth, earth's human population will double in about 50 years. which of the following is the least viable strategy for ensuring adequate nutrition for a population of this size? responses increasing the number of new food crops from the great diversity of plant species increasing the number of new food crops from the great diversity of plant species doubling the area of arable land on a global basis
Answers
Answer: responses increasing the number of new food crops from the great diversity of plant species
Explanation: 34^5 kids in my basement
The independent variable is the variable that is changed in an experiment. a True b False
Answers
True.
Explanation:
An independent variable is what is changed by the scientist experimenting, or you. An easy way to remember this is that independent starts with an "I", which "I" am the one that manipulates the variable. A good experiment only has one independent variable.
A dependent variable is the data of the experiment. This could be the impact a drug has on individuals, how much a plant has grown, test scores of students, etc. What is measured at the end of an experiment is the dependent variable.
A control variable is something that is stayed constant throughout the experiment. This could be the amount of water, type of soil, amount of light, the color of light, etc. These things are not changed.
Give this super villain science property’s
Answers
The element is Gadolinium
Symbol=Gd
Group=Group 2
Period=6
Electronic configuration:-
\(\\ \sf\Rrightarrow [Xe]4f^75d^16s^2\)
Block=s-block
Type=Alkaline earth metal
Done
Answer:
Hope it will help you a lot.
Why do capillaries need to be thin walled?
so only a few nutrients can pass through
so only a small amount of blood can flow through
so they can go through the small spaces within the body
so the exchange of gases and nutrients can happen
Answers
Answer:
so the exchange of gases and nutrients can happen
Explanation:
so the exchange of gases and nutrients can happen
thin walls = less distance for gases and nutrients to travel
Answer: so the exchange of gases and nutrients can happen
In the food web shown below, which of the organisms can be classified as a producer?
Answers
Answer: The plants
Explanation: Because the producers get their energy from sunlight
Answer:
Wheat; Plant; Flower (the bottom three)
Explanation:
Plants are producers that create their own food and are food for other organisms.
study island i got it right
What sorts of organs and tissues do bacteria have ?
Answers
Answer:
: todas las bacterias se pueden clasificar en una de las tres formas básicas: esferas (cocos), bastones (bacilos) y espirales o hélices (espiroquetas). Necesidad de oxígeno: las bacterias también se clasifican en dos grupos, según si necesitan oxígeno para vivir.
explicacion:
:-t
Why do plant cells need a high osmotic pressure?
Answers
Answer: Osmotic pressure is the main cause of support in many plants. When a plant cell is in a hypotonic environment, the osmotic entry of water raises the turgor pressure exerted against the cell wall until the pressure prevents more water from coming into the cell.
Explanation:
What is that hole in the middle of the vertebra with in it?
Answers
Vertebrae have a central opening, called vertebral foramen, that form the spinal canal and contain the spinal cord.
Thermal Energy, Heat, Temperature Summary
Bro easy points just need a 7th grade version of thermal energy, heat, and temperature just a summary.
Give you 15 points
Answers
Answer: 7th graders man I'm in 10th grade, Heat, is thermal energy transferred from a hotter system to a cooling system that is in contact.
Explanation: Temperature is a measure of the average kinetic energy of the atoms or molecules in the system. would this help :P
The cell in the diagram is dividing. What is the mitotic phase that follows the one shown on the diagram, and what events will take place during that phase?.
Answers
Answer:
Anaphase follows the pase shown on the diagram.
Explanation:
yes
The diagram shown in the image is Anaphase.
What is Anaphase?
When eukaryotic cells divide, the chromosomes are segregated to the cell's two poles during a period known as anaphase. The chromosomes are pulled to the metaphase plate, which is located in the center of the cell, during the metaphase stage before anaphase.
The chromosomes continue to condense through anaphase, despite being strongly compressed at the beginning of cell division. After the cell passes the spindle formation checkpoint, which permits the separation of chromosomes or chromatids, anaphase begins.
The chromosomes are drawn toward the centrosome and eventually form a semicircle around it as the microtubules connecting them to the centrosomes shrink. The cell repairs its nucleus and gets ready to divide during the subsequent phase of cell division, known as telophase.
Therefore, The diagram shown in the image is Anaphase.
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The diagnostic term for distended or tortuous veins usually found in the lower extremities is:
a. hemorrhoid
b. varicose tubules
c. varicose veins
d. aneurysm
Answers
The diagnostic term for distended or tortuous veins usually found in the lower extremities is c.) varicose veins.
Veins are blood vessels that are responsible for returning deoxygenated blood back to the heart. They have valves that prevent the backward flow of blood. However, when these valves malfunction, it can lead to the pooling of blood in the veins and cause them to become distended and tortuous, resulting in a condition known as varicose veins.
Appearance: Varicose veins are enlarged, swollen, and twisted veins, often appearing blue or dark purple. They occur when faulty valves in the veins allow blood to flow in the wrong direction or to the pool, leading to a distended appearance. Most commonly in the legs and feet. Cause: They are caused by weakened vein walls and valves, which can be due to a variety of factors such as genetics, age, obesity, pregnancy, and prolonged standing or sitting.Diagnosis: The diagnosis is typically made based on the appearance of the veins, as well as the symptoms reported by the patient, such as pain, swelling, and aching in the affected area. In some cases, diagnostic tests such as ultrasound may be used to confirm the diagnosis and assess the severity of the condition.Treatment: Options for varicose veins include lifestyle changes such as exercise and weight management, compression stockings, and minimally invasive procedures such as sclerotherapy and endovenous laser treatment. In severe cases, surgery may be necessary to remove the affected veins.Learn more about varicose veins here: https://brainly.com/question/20152828
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The Ambystoma tigrinum and Ambystoma maculatum are 2 types of salamanders. Ambystoma represents which taxonomic level?
Answers
Answer: he presence of neotenic populations near those with large larvae has made it difficult to identify mole salamander species. The tiger salamander complex was previously considered a single species ranging from Canada to Mexico, falling under the name A. tigrinum. Despite differences in coloration and larvae, tiger salamanders were found throughout their unbroken range, which made it difficult to delineate subspecies, let alone elevate any populations to species status. In morphological terms, tiger salamanders are all very similar, with large heads, small eyes, and thick bodies. This is probably because tiger salamanders have the primitive morphology of mole salamanders. They are also the largest of the mole salamanders and have very large larvae. All populations have similar lifestyles, and their lifecycles are identical. However, when one looks at tiger salamander populations distant from each other, different species within this complex become apparent. The ranges of these potential species overlap, and hybridization occurs, blurring the lines between species.
Explanation:
Answer:ur mum
Explanation:
37) Most of Oxygen resource is from
photosynthesis that happen
in ..........
A.
rainforests
B.
soil
C.
ocean
D.
river and lakes
Answers
\(\large\pink{\mid{\underline{\overline{\tt { →\:OCEAN}\mid}}}}\)
Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean.\(\purple{\rule{15mm}{2.9pt}} \red{\rule18mm{2.5pt}} \orange{ \rule18mm{2.5pt}}\)
\(\sf{\:мѕнαcкεя\: ♪...}\)
A. Rainforests
B. Soil
C. Ocean
D. Rivers and lakes
Answer: letter C
Which is not a correct comparison of cardiac myocytes to other muscle cell types?.
Answers
The correct answer is option A. Cardiac myocytes can be compared to other muscle cell types in terms of their similarities and differences. They share many similarities with other muscle cell types such as smooth muscle cells and skeletal muscle cells. For example, they both are able to contract to produce mechanical force that can move the body.
However, there are also significant differences between these muscle cell types that set them apart from each other. Cardiac myocytes have characteristics that make them unique when compared to other muscle cell types. Some of the differences between cardiac myocytes and other muscle cell types are: Cardiac myocytes are involuntary, meaning they are not under conscious control, unlike skeletal muscles. They have a longer duration of action potential than skeletal muscles, which makes them better suited to sustain contraction. Cardiac myocytes possess branched intercalated disks, which are specialized structures that help to coordinate the synchronized contraction of the heart. These structures are not present in skeletal muscles. Cardiac myocytes contain a single nucleus, unlike skeletal muscles that contain many nuclei. The force of contraction generated by cardiac myocytes is weaker than that of skeletal muscles. However, cardiac myocytes are more fatigue-resistant than skeletal muscles as they have a more significant number of mitochondria that help generate ATP. Cardiac myocytes can be compared to other muscle cell types in terms of their similarities and differences. They share many similarities with other muscle cell types such as smooth muscle cells and skeletal muscle cells. For example, they both are able to contract to produce mechanical force that can move the body. However, there are also significant differences between these muscle cell types that set them apart from each other.
Cardiac myocytes have characteristics that make them unique when compared to other muscle cell types. Some of the differences between cardiac myocytes and other muscle cell types are: Cardiac myocytes are involuntary, meaning they are not under conscious control, unlike skeletal muscles. They have a longer duration of action potential than skeletal muscles, which makes them better suited to sustain contraction. Cardiac myocytes possess branched intercalated disks, which are specialized structures that help to coordinate the synchronized contraction of the heart. These structures are not present in skeletal muscles. Cardiac myocytes contain a single nucleus, unlike skeletal muscles that contain many nuclei. The force of contraction generated by cardiac myocytes is weaker than that of skeletal muscles. However, cardiac myocytes are more fatigue-resistant than skeletal muscles as they have a more significant number of mitochondria that help generate ATP. From the given options, the option which is not a correct comparison of cardiac myocytes to other muscle cell types is given in option A, which states that they are skeletal muscles with the shortest action potential. This is an incorrect comparison as the duration of action potential of cardiac myocytes is longer than skeletal muscles. Therefore, the correct answer is option A.
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What was the purpose of using CRISPR in the Anopheles gambiae mosquitoes experiment?Group of answer choicesTo find a way to lower mosquito populations in the wild and get rid of malaria in the future.The purpose of this experiment was to create a new disease like malaria.To find a way to lower mosquito populations in the wild and increase cases of malaria in the future.To find a way to increase mosquito populations in the wild and get rid of malaria in the future.
Answers
To find a way to lower mosquito populations in the wild and increase cases of malaria in the future the purpose of using CRISPR in the Anopheles gambiae mosquitoes experiment.
Why do humans get malaria?The malaria parasite, which is spread by infected mosquitoes, multiplies inside red blood cells after entering the human bloodstream. After a few days, these cells burst, infecting other red blood cells and resulting in symptoms such as a severe headache, nausea, vomiting, fever, and coma.
What causes malaria largely?A plasmodium-genus single-celled parasite, which causes malaria. Most frequently, mosquito bites are the means of parasite transmission to people.
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What does the immune system protect the body against?
Answers
The immune system protects your child's body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together.
I got scammed last time I asked can you guys help me now pls
She/They
Answers
the combining form for the double membrane that lines the abdominal cavity is:_____.
Answers
Answer:
peritoneum (peritone/o)
Explanation:
The combining form for the double membrane tha5 lines the abdominal cavity is peritoneum (peritone/o)
hope this helps!
Help! Science work!!
Answers
(Don’t mind this gei ixjdhheusudhehshhd)
For a certain plant, purple flowers (allele: P) are dominant and white flowers (allele: p) are recessive. A heterozygous purple plant is crossed with a true-breeding (purebred) white plant. What are the possible genotypes (allele pairs) of the offspring?
Answers
The possible genotype of all the offspring will be PP, and Pp as per the given situation.
What is genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.
The term "genotype" broadly refers to an organism's genetic make-up; in other words, it characterizes an organism's whole gene pool.
The phrase can also be used to describe to the alleles, or different forms of a gene, that an organism carries in a more specific meaning.
In the Punnett square attached, the genotype of the organism is PP and Pp, which means the generation will be having purple flower.
Thus, the possible genotype will be 50% PP and 50% Pp.
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which part of the dna molecule holds the information that determines our traits?
Answers
Gene is the part of the DNA molecule determine your traits.
Gene is a segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.
The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. Many genes do not, however, code for proteins. A few hundred DNA bases to more than 2 million bases make up a gene in a human. Humans are thought to have between 20,000 and 25,000 genes, according to the Human Genome Project, an international scientific project that aimed to decipher the human genome's sequence and identify its genes.
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Write the complimentary DNA strand for: CCGTTT
Answers
Answer:
GGCAAA is the other side of this DNA strand
Explanation:
Hope this helps!
Let's keep working to identify How about this bone? 2. III = E FL POMIE Image use with permission of Isabelle Creece O A Tibia O B Humerus O C Femur D Ulna
Answers
The given image shows a bone labeled as "III = E FL POMIE." Using this label, we can determine the possible bone that it represents. However, without more context or information, it is challenging to make an accurate identification.
One approach could be to use anatomical knowledge to narrow down the possibilities. The labeled bone is a long bone with a distinct shape and features, such as a shaft and rounded ends. The possible bones that match these criteria are the tibia, humerus, femur, and ulna.
The tibia is located in the lower leg, while the humerus is located in the upper arm. The femur is located in the thigh bone, while the ulna is located in the forearm. Therefore, based on the anatomical location, we can eliminate the humerus and femur as potential options.
Ultimately, without additional information or context, it is difficult to determine the specific bone that the label "III = E FL POMIE" refers to. However, based on the anatomical features, the tibia or ulna could be possible options.
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Based on the abbreviation given in the question, III = E FL POMIE, the bone being referred to is the femur. So the correct option is C.
The bone in the image is a femur. The femur is the thigh bone, which is the longest and strongest bone in the human body. It connects the hip bone to the knee bone and plays a critical role in movement and weight-bearing. The proximal end of the femur forms the hip joint with the acetabulum of the pelvis, while the distal end articulates with the tibia and patella to form the knee joint. The femur is composed of several parts, including the head, neck, shaft, greater trochanter, lesser trochanter, and condyles. These parts are important for muscle attachment, stability, and movement. Injuries to the femur can be serious and may require surgery to repair or replace the bone.
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what are the probable genotypes of both the first and second generations of sheep, after the black sheep are introduced?
Answers
In the first generation the sheep will most likely be all white but as you continue with then in the second generation you might be able to get a few black sheep but it has to do with the dominant and recessive genes.
What is genotypes ?A genotype is a rating of the kind of variant that is present at a specific locus (i.e., place) in the genome. Symbols are a form of representation. A specific gene variant could be represented, for instance, by the letters BB, Bb, and bb.
The term "genotype" broadly refers to an organism's genetic make-up, or, to put it another way, the entire set of its genes. The phrase can also be used more specifically to describe to a gene's alleles, or variant versions, that an organism carries.
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what happens to the chromosomes if nondisjunction occurs during meiosis one versus meiosis two
Answers
Answer:
Nondisjunction is defined as the failure in the separation of homologous chromosomes or sister chromatids during nuclear division.
Nondisjunction occurs in both phases meiosis one (I) and meiosis two (II) during anaphase but both in both phases nondisjunction is different.
In meiosis I, homologous chromosomes fail to separate while in meiosis II, sister chromatids fail to separate.
what evidence suggests that birds evolved from theropod dinosaurs?
Answers
Answer:
Feathers
Explanation:
For a long time, feathers were regarded as a uniquely avian feature. Bur recent fossil evidence suggests that feathers, too, evolved in theropods before birds.