which statements accurately reflect the permeability of the cell membrane? choose all that apply
Answers
Answer:
The hydrophilic part of the cell membrane is A, the phosphate head.
Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane.
C, the lipid tails, are hydrophobic and repel water.
Explanation:
Related Questions
Respond with at least 120 words.
Find a scientific or news article that provides examples of
selective breeding and let us know why you chose it.
Answers
I have chosen an article titled "Selective Breeding in Livestock: Advantages, Limitations, and Applications" published in the journal Frontiers in Genetics.
The article "Selective Breeding in Livestock: Advantages, Limitations, and Applications" offers a valuable exploration of selective breeding practices in livestock. It discusses the advantages of selective breeding, such as the improvement of desirable traits, increased productivity, and disease resistance. The article also addresses the limitations and challenges associated with selective breeding, including reduced genetic diversity and potential negative effects on animal welfare in GMO technologies. Moreover, the article presents various real-world examples of selective breeding in livestock, ranging from dairy cattle and poultry to pigs and sheep. These examples highlight the practical applications of selective breeding techniques in achieving specific breeding goals and meeting the demands of the livestock industry.
I chose this article because it provides a comprehensive and scientifically grounded examination of selective breeding in the context of livestock. It offers a balanced view by discussing both the benefits and limitations of this practice. Additionally, the inclusion of real-world examples adds practical relevance to the topic. Overall, this article serves as a reliable and informative resource for understanding the concepts and applications of selective breeding in livestock.
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Select ALL the correct answers.
Which statements correctly describe mutations in gametes and mutations in somatic cells?
Mutations to somatic cells are transferred to daughter cells,
ODOS O
Mutations to gametes can be passed on to an organism's offspring,
Mutations to gametes do not involve changes
in the DNA.
Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
Mutations to somatic cells will be inherited by an organism's offspring
Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
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Answers
HELPPP
what happens when an atom loses an electron?
a. it has a decrease in the number of neutrons.
b. it has an increase in the number of protons.
c. it becomes a positive ion.
d. it becomes a negative ion.
Answers
Answer:
A
Explanation:
The Neutrons and electrons have to be the same
What is the largest problem with implementing CRISPR based technologies for therapy, and
also a major headache for researchers using CRISPR for making animal models for human
diseases:
A. Technique is very laborious
B. Off-target editing events at loci with imperfect sequence matching
C. Sequence of RNA guides is very expensive
D. Require a transfer with potentially oncogenic viral vectors
E. All of the above
Answers
The largest problem with implementing CRISPR based technologies for therapy and a major headache for researchers using CRISPR for making animal models for human diseases is B) off-target editing events at loci with imperfect sequence matching.
While the other options listed (A. Technique is very laborious, C. Sequence of RNA guides is very expensive, and D. Require a transfer with potentially oncogenic viral vectors) are also concerns, the risk of off-target effects is considered the most significant challenge in using CRISPR for therapeutic and research purposes.
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2.2 If you are going to plant the following, which minerals/ nutrients will need to be modified and how? (Refer to theme 7 for requirements) (20) Eragrostis curvula, 3.2 Lolium multiflorum, 3.3. Cenchrus ciliaris. 3.4 Medicago sativa
Answers
Among the plant species mentioned, only the Medicago sativa species needs soil modification for its planting.
Eragrostis curvulaCultivated in full sun, but tolerates partial shade. Rustic, not developed in terms of soil, it adapts to poor, dry or humid soils.
Lolium multiflorumThis weed can occur at various times in wheat
Cenchrus ciliarisPlanting is usually carried out by seeds, being a manual in general. Sowing can be carried out in pots, furrows or by casting, when carried out in the rainy season.
Medicago sativaFlat areas marked by deep, fertile, well-drained soils, free of ponds and pH between 6.7 are the forage's preferred.
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which of the following best explains why a hypotonic solution causes a cell to swell? multiple choice question. solutes rush into the cell water rushes into the cell water rushes out of the cell solutes rush out of the cell
Answers
The following best explains why a hypotonic solution causes a cell to swell is solutes rush into the cell
A hypotonic solution is a solution that has a lower osmotic pressure than other solutions because a hypotonic solution has a lower concentration of solutes than the concentration of solutes in other solutions
In a hypotonic solution, the concentration of solutes (eg salt and sugar) outside the cell is lower than the concentration inside the cell. This creates an osmotic gradient, which draws water into the cells, and solutes follow the water into the cells. This causes the cell to swell as the inside of the cell gets denser.
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A community has had an increase of 5% in their population within the last year. As a result, city officials have planned to build a new business center that includes clothing stores, supermarkets, and restaurants. Prior to approving the plan, what environmental effects should the local government consider? Group of answer choices The needs of the developer should be considered before the effects of the environment. The impacts of the development on endangered species do not need to be considered. The risk of a loss of biodiversity in native species due to habitat destruction should be considered The pressures from developers and environmentalists should be considered.
Answers
Answer:
The correct answer is - The risk of a loss of biodiversity in native species due to habitat destruction should be considered.
Explanation:
In order to protect the ecosystem and environment, local government bodies or authorities need to look and consider several environmental conditions that might be at risk due to acquiring land and developing a city.
These factors or impacts can result in loss of habitat due to building new buildings and cause loss of biodiversity. These officials should be looking for the impact on endangered species of this development.
Answer:the one that starts with risk
Explanation:
In cats the trait for hair length is controlled by gene S, where the dominant allele(S) results in short hair and recessives have long hair. The W gene is known as the "masking" gene because a cat that has a dominant W allele in its genotype will have an all-white coat due to a lack of melanin in its skin. Cats with a w w genotype can have a coat of any color, depending on the inheritance of other genes that determine coat color. A male with long hair and a white coat is crossed with a female cat with short hair and a white coat. The owner of the cats has heard about the masking gene and believes that the cross will produce a litter of all-white kittens, some with short hair and some with long hair. (a) is the owner's prediction accurate? Give evidence to support your response. (b) Based on the given information, determine all of the possible genotypes of the kittens in the litter
Answers
Based on the given information, the owner's prediction is not accurate. The possible genotypes of the kittens in the litter of the cross mentioned in the question are SsWW, ssWW, SsWw, ssWw, Ssww, ssww.
The possible genotypes of the male parent cat are ssWW and ssWw. The possible genotypes of the female parent cat are SSWW, SsWw, SsWW, SSWw. There are 6 possibilities in which the parent genotypes can be crossed.
1. On crossing male ssWW with female ssWw, the genotypes of all the kittens produced can be SsWW.
2. On crossing male ssWW with female SsWw, the genotypes of the kittens produced can be SsWW, ssWw, SsWw, ssWW.
3. On crossing male ssWW with female SsWW, the genotypes of the kittens produced can be SsWW and ssWW.
4. On crossing male ssWw with female SSWW, the genotypes of the kittens produced can be SsWW and SsWw.
5. On crossing male ssWw with female SsWw, the genotypes of the kittens produced can be SsWW, ssWW, SsWw, ssWw, Ssww, ssww.
6. On crossing male ssWw with female SSWw, the genotypes of the kittens produced can be SsWW, SsWw, Ssww.
Observing the results of cross 5 and cross 6, there is a possibility of kittens produced receiving recessive masking genotype (Ssww, ssww).
Hence the owner's prediction of producing a litter of all-white kittens cannot be hundred percent accurate.
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What can you determine from the principles of cross-cutting relationships?
A. Layers that cut across the most other features are youngest.
B. In a given region, all layers of sediment form at the same time.
C. The layers of sediment on the bottom are the oldest.
D. Two different types of sediment will not cut across each other.
Science A P E X
Answers
A. Layers that cut across the most other features are youngest.
Explanation:
Using the principles of cross-cutting relationships, you can determine the relative age of rocks found in the ground. The idea behind it is that the geologic feature which cuts another is the younger of the two features, and it had been around for 400 years. It's not very precise but it is good for determining relative age.
Ok, last one, and i'm done for today!
What type of bond forms between Complementary base pairs?
Answers
Answer:
hydrogen bonds form between Complementary base pairs
Explanation:
The nucleotides in a base pair are complementary which means their shape allows them to bond together with hydrogen bonds.
Apply the concept of sustainable development to harvesting
trees in the timber industry. How could trees be cut down without drastically impacting the forest ecosystems?
Answers
Answer:
You can cut down the trees without hurting the trunk
Explanation:
Trees can regrow from their trunks.
Answer:
timber industries needs to plant more trees to replace the ones they destroyed
what happens to the oxygen that is metabolized within the mitochondria?
Answers
Answer: The oxygen is combined with hydrogen to form water
Explanation:
When oxygen is metabolized within the mitochondria, it is used in a process called oxidative phosphorylation to produce energy in the form of ATP.
This process involves the transfer of electrons from molecules like glucose to oxygen, which ultimately results in the creation of a proton gradient that is used to power the ATP synthase enzyme. As a result, the oxygen molecules are converted into water molecules, which are then released as waste products.
Additionally, some of the oxygen molecules may react with other molecules within the mitochondria, such as reactive oxygen species (ROS) that are generated during the process of oxidative phosphorylation. These ROS can cause damage to the mitochondria and other cellular structures if they are not properly neutralized by antioxidants.
Overall, the oxygen that is metabolized within the mitochondria plays a crucial role in the production of energy for the cell, but it must be carefully managed to avoid any negative effects on cellular function.
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What is the hope that induced pluripotent stem cells provide? Choose as many as apply.
a. the use of these cells would lower the chance of rejection of the organ/tissue.
b. patients would not have to wait for an organ/tissue donation.
c. a doctor could produce an organ or tissue from a patient's own stem cells.
Answers
Induced pluripotent stem cells (iPSCs) are adult cells that have been genetically modified to resemble embryonic stem cells. a, b, and c, option are correct.
Their introduction has opened up new therapeutic options for various illnesses, including heart disease, Parkinson's disease, and diabetes mellitus. What are the benefits of using induced pluripotent stem cells?The following are the benefits of using induced pluripotent stem cells:a. The use of these cells would lower the chance of rejection of the organ/tissue.b. Patients would not have to wait for an organ/tissue donation.c. A doctor could produce an organ or tissue from a patient's own stem cells.
Therefore, the hopes that induced pluripotent stem cells provide include a, b, and c, as stated above.
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For pea plants,inflated pods are dominant to constricted (tight) pods. Cross two heterozygous pea pods (Ff and Ff) what are the genotypes and phenotypes of the offspring?
Answers
Answer:
just go with b i had this it was b
Explanation:
caffeine is known to alter transmembrane movement of ca 2. what are two possible sites at which caffeine is acting? (again, this is a nerve and muscle preparation.)
Answers
Caffeine is known to alter the transmembrane movement of Ca⁺², the two possible sites at which caffeine is acting are the voltage-gated Calcium channel and the adenosine receptors.
It is well known that caffeine has the ability to modify the transport of Ca⁺² across membranes. On the basis of this knowledge, the voltage-gated calcium channel is a possibility for functioning as the binding site for caffeine.
The adenosine receptors that are in the body are targeted by caffeine's effects. The inhibition of the activity of these receptors leads to the activation of neurotransmitter-containing vesicles. The neurotransmitter is released into the synaptic cleft by the vesicles in question. Dopamine and glutamate are two of the neurotransmitters that are made accessible after adenosine receptors have been inhibited.
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which sugar is the sweetest and its found in...........
Answers
The sugar that is the sweetest and found in fruits is fructose.
Fructose is a natural sugar that is most commonly found in fruits, honey, and vegetables. In terms of sweetness, fructose is the sweetest among all other types of sugar. Sucrose, which is found in granulated sugar, is made up of glucose and fructose. The fructose part of sucrose is what makes it sweet, but it is not as sweet as pure fructose itself. Fructose is a monosaccharide, which means it is a simple sugar that cannot be broken down into smaller sugar molecules. In the body, fructose is processed in the liver, unlike glucose, which is processed in other cells of the body. Consuming too much fructose can lead to health problems such as weight gain, type 2 diabetes, and fatty liver disease.
Fructose is the sweetest among all other types of sugar, and it is found naturally in fruits, honey, and vegetables. However, it is important to consume it in moderation as too much fructose can lead to negative health effects.
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chest pain secondary to oxygen deprivation to the myocardium is
Answers
Chest pain secondary to oxygen deprivation to the myocardium is called angina pectoris.
Chest pain known as angina pectoris develops when the heart muscle doesn't get enough oxygen-rich blood. It is frequently a sign of underlying atherosclerosis or coronary artery disease.
A squeezing, pressure-like discomfort in the chest that can also affect the arms, shoulders, neck, jaw, or back is the hallmark of angina. Physical effort, emotional stress, or exposure to low conditions can all cause pain. Angina symptoms are frequently treated with rest and drugs like nitroglycerin.
Angina should not be disregarded because it may be an early indicator of a heart attack. In order to effectively manage angina and lower the risk of cardiovascular events, lifestyle modifications, proper diagnosis, and medication therapies are essential.
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Correct question:
Chest pain secondary to oxygen deprivation to the myocardium is called _______.
An animal can wound a tree by scratching away the bark.. The tree can respond to the wounded many ways. Usually sapped quickly covers the wound, and then the tree covers the wound with new growth.
The diagram below shows a cross-section of the tree with a healed wound. What process works most directly with the transport system to heal the wound.
a. cellular reproduction
b. photosynthesis
c. water intake
d. carbohydrate system
Answers
Answer:
the answer is A, cellular reproduction.
Explanation:
because cellular reproduction is a process by which cells duplicate their contents and then divide to yield multiple cells with similar, if not duplicate, contents, basically reforming itself again.
what would happen to the fox population if the mouse population increases?
Answers
They would get more meals.
Sorry if this is incorrect.
If the mouse population increases, the fox population is likely to increase as well since foxes rely on mice as a major food source. This is because with more mice, the foxes will have more food to hunt and will be able to reproduce more successfully.
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If light color is a recessive trait and the trees stay dark forever, could the light colored moths eventually become extinct? Why or why not?
Answers
Answer:
The light moths could become extinct eventually
Explanation:
If trees stay dark forever the light moths are easier to prey upon and eventually negative selection pressure will decrease the population of light moths until it is virtually nonexistent.
For a real life case of this, look into pepper moths and the Industrial Revolution.
If the light-colored trait is truly recessive, the moths may still carry the gene and could reappear in future generations.
What is a recessive trait?A recessive trait is a genetic characteristic that is only expressed when an individual inherits two copies of the recessive gene, one from each parent. In other words, a recessive trait is only observable when the dominant version of the gene is absent.
For example, if a person inherits a dominant brown-eye gene from one parent and a recessive blue-eye gene from the other parent, they will have brown eyes, as brown is the dominant trait. However, if both parents pass on the recessive blue-eye gene, the individual will have blue eyes, as there is no dominant gene present to override the recessive gene.
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prokaryotic ribosomes differ from those present in eukaryotic cytosol. because of this, which of the following is correct? a. some selective antibiotics can block protein synthesis of bacteria without effects on protein synthesis in the eukaryotic host. b. eukaryotes did not evolve from prokaryotes. c. translation can occur at the same time as transcription in eukaryotes but not in prokaryotes. d. some antibiotics can block the synthesis of peptidoglycan in the walls of bacteria. e. prokaryotes are able to use a much greater variety of molecules as food sources than can eukaryotes
Answers
The following statement is true: Prokaryotes can consume a considerably wider diversity of chemicals than can eukaryotes.
Why do ribosomes found in bacterial cells differ from those found in eukaryotic cytosol?While the majority of eukaryotic ribosomes are membrane-bound, prokaryotic ribosomes are found loose in the cytoplasm. The two subunits known as the big and small subunit are present in both varieties of ribosomes. Ribosomes in prokaryotes and eukaryotes differ primarily in size and placement within the cell.
How do bacterial and eukaryotic cells' ribosomes differ?In prokaryotes, ribosomes are smaller, only found in free form and not in any other organelles. They are composed of three different types of three-stranded rRNA and fifty different forms of protein. In eukaryotes, ribosomes can be found in other organelles (like mitochondria) or in free form.
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What is the cellular Structures present in all living cells
Answers
Answer:
All cells share four common components:
1.) A plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment
2.) Cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found
3.) DNA, the genetic material of the cell
4.) Ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.
According to this diagram, which way would the molecules need to move in order for the figure above to represent active transport?
molecules inside and outside a cell, with more molecules outside of the cell than in
Molecules inside the cell move outside the cell.
Molecules outside the cell move inside the cell.
The molecules will not move.
Molecules will move into and out of the cell at the same time.
Answers
Answer:
Molecules inside the cell move outside the cell.
Explanation:
Direct relationship (between keystone species and other organisms):
Answers
Answer:
Keystones species are very functional in the ecosystem in which there removal or absence as predators can lead to explosion of prey populations and decrease diversity. Keystone species help define an ecosystem and without they ecosystem can cease to exist.
Explanation:
Keystone species are predators species that help regulate the populations of other species through its activities or effects on the ecosystem. Keystone species exert both direct or indirect activities on the ecosystem. An indirect interaction occurs when species influence one another through their interactions with other species. Which can be inform of competition, interaction modifications e.t.c
aquaponics best defined as?
Answers
Answer:Aquaponics is a cooperation between plants and fish and the term originates from the two words aquaculture (the growing of fish in a closed environment) and hydroponics (the growing of plants usually in a soil-less environment). Aquaponic systems come in various sizes from small indoor units to large commercial units.
Explanation:
Answer: a system of growing plants in the water that has been used to cultivate aquatic organisms
Explanation:
to determine
(1) The scientist placed a white laboratory rat in the pparatus
how quickly the rat could find its way out.
that the rat was
(2) From his observations, the scientist could _dcoule
able to learn the correct route in the maze.
(3) If you
your time wisely, you will finish your work more quickly.
(4) The sky was filled with
black clouds.
before he melted it.
(5) In the lab the scientist placed gold in a
(6)
in his white lab coat, the scientist resembled a physician.
(7) The scientist determined that the unknown metal possessed
because it could be hammered into a thin sheet.
(8) The unknown metal did not possess
because it could not be
drawn out into a wire.
(9) For centuries, men have searched for an
that would change
lead to gold.
(10) The
possessions we have on Earth will not retain their value
in Heaven.
(11) Our group, which includes people of many different races, is a
one.
(12) After assembling all the
Answer the question
Answers
A medical student is trying to visualize how the structures that make up the
valves inside the heart are positioned. Which model would be the most useful
in this situation?
A. A computer model showing the path of a red blood cell through
the body
B. A physical model of the internal parts of the heart
C. A mathematical model showing how blood pressure changes as
the heart beats
D. A conceptual model comparing the heart to a pump
Answers
where do all of the cells in the human body come from
Answers
Answer:
Every cell in the body originates from a single fertilized egg called a zygote. The zygote divides repeatedly to produce an embryo. These embryonic cells continue to divide, differentiating into all the cell types present in the body of all humans (and other mammals), from a new-born baby to an elderly adult
Answer:
The zygote
Explanation:
I'm not exactly sure what you're talking about, but this is what I found: "Every cell in the body originates from a single fertilized egg called a zygote. The zygote divides repeatedly to produce an embryo. These embryonic cells continue to divide, differentiating into all the cell types present in the body of all humans (and other mammals), from a new-born baby to an elderly adult."
Study island 7th grade
Answers
Answer:
7th grade math curriculum summary : In seventh grade, students apply many concepts that they have learnt in 6th grade but in more detail. Students will learn real world problems which involves percentage,profit and loss,interest scale drawings etc. Based on integers which the students have already learnt in 6th grade will apply properties of operations to all rational numbers.
Explanation:
whats the question??
What drives subduction at a converging plate boundary?
Answers
Answer:
The geologic features related to convergent boundaries vary depending on crust types. Plate tectonics is driven by convection cells in the mantle. ... Subduction begins when this dense crust converges with less dense crust. The force of gravity helps drive the subducting slab into the mantle