Selectively permeable membranes are important in cell function. What makes a membrane selectively
permeable?
A
The ability to remove bacteria from the cell.
B The ability to use energy to make proteins used in the cell.
The ability to modify, sort and package proteins and lipids for storage or
C
transport out of the cell.
The ability to allow needed materials to enter and wastes to exit as well as the ability to block
unneeded materials from entering the cell.
D
Answers
Answer:
The ability to allow needed materials to enter and wastes to exit as well as the ability to block unneeded materials from entering the cell.
Explanation:
A selectively permeable cell membrane only allows some things to go through it, therefore this answer choice is the correct one because it is explaining how it is selectively permeable.
Related Questions
4. Mutations that occur in gametes:
A. May be passed on to future generations
B. Can be important in the evolution of a species
C. Affect the functioning of the gene in which they occur
D. All of these are correct.
Answers
Answer:
Technically C is not entirely correct. But the answer is probably D
Explanation:
Mutations that occur in gametes:
A. May be passed on to future generations
-Correct mutation in gametes(sex cells) can be passed onto future generation.
B. Can be important in the evolution of a species
-Yes, it can lead to different phenotype that may be important to evolution of a species.
C. Affect the functioning of the gene in which they occur
->it can affect the functioning of the gene, but it can be silent mutation or mutation in intron
D. All of these are correct.
A group of chemicals that have local effects instead of being released into the blood are known as:
Answers
The group of chemicals that have local effects instead of being released into the blood are known as "paracrine" substances.
Paracrine signaling involves the release of signaling molecules, called paracrine factors or autacoids, which act on nearby cells to elicit a response.
Examples of paracrine substances include histamine, prostaglandins, and cytokines.
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Genetic counseling should accompany dna analysis of _____.
a. all criminal suspects
b. dna laboratory workers
c. health insurance applicants parents seeking disease screening for their newborn
Answers
Genetic counseling should accompany DNA analysis of parents seeking disease screening for their newborn.
What about parents seeking disease screening for their newborn?All states mandate newborn screening, however the majority let parents to object for religious reasons.Since newborn screening is intended to safeguard the baby's health, any decision to decline or deny testing should first be reviewed with a healthcare expert.Conditions that may have an impact on a child's long-term health or survival are found during newborn screening.Children can achieve their full potential when they receive early identification, diagnosis, and intervention.The following newborn screening tests are possible (PKU).A protein called phenylalanine cannot be metabolized by the body in PKU, a hereditary condition.Hypothyroidism that is inherited.Learn more about seeking disease screening here:
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each of the following terms is a descriptive term for a muscle's action except each of the following terms is a descriptive term for a muscle's action except sartorius. levator. extensor. pronator. adductor.
Answers
Each of the following terms is a descriptive term for a muscle's action except quadriceps. Large fleshy muscle group encompassing the front and sides of the leg is called the quadriceps femoris.
The rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius are its four component sections. They begin at the ilium (the top of the pelvis, or hipbone), the femur (the thighbone), the patella (the kneecap), and the tibia (where they insert and are joined) (shinbone). These muscles are crucial for standing, walking, and nearly all other leg-related actions because they extend the legs at the knee.
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Cladograms are scientific hypotheses that can be overturned by new data. True False Angiosperm plants did not appear until after the extinction of the dinosaurs. True False The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". True False In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. True False The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". True False An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. True False
Answers
An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. This statement is false. An ichnofossil is a trace fossil, which is any indirect evidence of past life, such as tracks, burrows, and feces. It is not part of the hard skeleton left behind by a vertebrate.
Cladograms are scientific hypotheses that can be overturned by new data. This statement is true. Cladograms are diagrams that show the evolutionary relationship between organisms based on various traits. New data can cause changes to be made to cladograms which can result in a change to the interpretation of the evolutionary history of organisms.
Angiosperm plants did not appear until after the extinction of the dinosaurs. This statement is false. Angiosperms, also known as flowering plants, appeared in the fossil record at least 140 million years ago. Although the dinosaurs went extinct around 66 million years ago, angiosperms were already widespread and diversifying by that time.
The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". This statement is true. Analogous characters are traits that have evolved independently in different groups of organisms due to similar environmental pressures and not due to a shared ancestor.
In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. This statement is true. Non-genetic changes that occur during an organism's life span are not heritable and cannot be passed on to the next generation. Only genetic changes that occur in the germ cells, such as mutations, can be passed on to the offspring.
The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". This statement is false. A monophyletic group is a group of organisms that has a single ancestor and contains all of the descendants of this unique ancestor. This group is also called a clade.
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If a period contains many fossils of species that previously weren't found, what type of event most likely took place on Earth?Natural selectionMass extinctionPunctuated evolutionPopulation equilibrium
Answers
The answer to this question is the second one: Mass extinction, and this is because, throughout the history of our planet, there have been geological events, such as meteorization that have produced the different phases of the soil, and corresponding to each layer, there's a geological time associated, and in hence, a particular fauna and flora.
If only in a particular layer we can see those species, there are high probabilities of that being because of a massive extinction.
Transport proteins located in the cytoplasmic membrane are necessary when.
Answers
Transport proteins are required when the molecules that need to be transported are hydrophilic (water-soluble) or large and cannot penetrate the hydrophobic core of the phospholipid bilayer.
The lipid bilayer of the cytoplasmic membrane, which separates the cell's interior from the external environment, is mostly impermeable to molecules larger than water (small hydrophilic molecules like water can diffuse across). Transport proteins allow for the selective transfer of molecules into and out of the cell across the membrane. In bacteria, such as E. coli, which has a single cytoplasmic membrane, transport proteins are the primary way that nutrients and waste products are transported in and out of the cell.
There are two types of transport proteins, which are primary and secondary. Primary active transport proteins use energy to move molecules against their concentration gradients, whereas secondary active transport proteins use energy to move molecules against their concentration gradients by utilizing the energy stored in an ion gradient.
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During ___________, the cell grows, makes a DNA copy, and prepares to split into two cells
Answers
Answer:
Interphase
Explanation:
PLease help asap
Which element is most likely to give away electrons?
A. lithium
B. oxygen
C. xenon
D. chlorine
Answers
The element that is most likely to give away electrons is lithium (option A).
What is a metal?A metal is a number of chemical elements in the periodic table that forms a metallic bond with other metal atoms.
Metals are generally shiny, somewhat malleable and hard and often a conductor of heat and electricity.
However, metals are known to donate electrons to nonmetals when involved in chemical reactions to form ionic bonds.
Lithium is a simple alkali metal in group 1 and the third lightest chemical element with symbol Li, therefore, it is the element that is most likely to lose electrons.
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Deep facial bones that separate the oral and nasal cavities & form the nasal septum
Answers
The deep facial bones that separate the oral and nasal cavities and form the nasal septum are known as the ethmoid bone, the vomer bone, and the maxilla bone.
These bones are responsible for maintaining the structural integrity of the face and supporting the various functions of the oral and nasal cavities. The ethmoid bone, in particular, plays a crucial role in separating the two nasal cavities and providing structural support for the nasal passages. The vomer bone, on the other hand, helps to form the lower part of the nasal septum, while the maxilla bone contributes to the overall structure of the upper jaw and helps to support the teeth and gums. Together, these deep facial bones play an essential role in maintaining the health and proper functioning of the oral and nasal cavities.
The deep facial bone that separates the oral and nasal cavities and forms the nasal septum is the "vomer" bone. The vomer is a thin, flat bone that is located in the midline of the skull and divides the nasal cavity into left and right halves. It plays an essential role in supporting the structure of the nasal cavity and contributing to the overall structure of the face.
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what type of inheritance controls blood types in humans.
Answers
Answer:
A gene l
Explanation:
In which Koppen climate do you find monsoons?DCBA
Answers
In Koppen climate classification:
- A stands for tropical, in this climate is where do you find monsoons (Am).
- B stands for arid.
- C stands for temperate.
- D stands for continental.
- E stands for polar.
Permanent loss of forests can contribute to all the following problems except:
a. A wamer climate
b. Extinction of animal species
C. Higher levels of CO2
d. Higher levels of Oz
Answers
Only need answers.
1) Which of the following statements are 1 point true for filament winding process? 1. It is not possible to produce parts with reverse curvature (female features). 2. Fiber direction cannot be changed within a layer of winding. 3. Composite product configuration should be such that it should facilitate in mandrel extraction. 1 and 3 1 and 2 2 only All 1,2 and 3 2) flakes are commonly employed in 1 point paints and other coatings to enhance quality of finished surface. Mica Silver Aluminum Copper 3) Assertion (A): Moldings made from SMC1 point have higher mechanical properties as compared to moldings made from DMC Reason (R): SMC contains longer as well as more fibers as compared to DMC Both A and R are true and R is the correct explanation of A Both A and R are true but R is NOT the correct explanation of A A is true but R is false A is false but R is true 4) Ceramics are very sensitive to thermal 1 point stresses. These materials have High Young's modulus and Low elongation capability. Low Young's modulus and High elongation capability. High Young's modulus and High elongation capability. Low Young's modulus and Low elongation capability. 5) In bag molding process, bleeder plies 1 point are used to act as a path way for air bubbles and volatile materials to exit out absorb excess resin protect against contaminating agents ensure that the part does not get stuck to the mold plate 6) is the most suitable fiber for the 1 point production of personal armor. Glass Fiber Carbon Fiber Ceramic Fiber Aramid Fiber 7) Match List I with List II and select the 1 point correct answer. List I a) Tungsten carbide in cobalt matrix b) Chromium carbide in cobalt matrix c) Titanium carbide in cobalt matrix d) Oxide based cermet List II 1. Turbine parts, Torch tips and Hot mill parts. 2. Thermocouple protection tube. 3. Wire drawing dies, Precision gauges. 4. Valve parts, Nozzles, High load bearings
a−3,b−4,c−1,d−2
a-3, b-4, c-2, d-1
a-2, b-1, c-3, d-4
a-2, b-1, c-4, d-3
8) Identify the fabrication process from the 1 point following diagram. Resin Transfer Molding Filament Winding Pultrusion Infusion 9) Which of the following statements are 1 point true for Spray Lay-Up process? 1. Laminates tend to be very resin-rich and therefore excessively heavy. 2. Short as well as long fibers can be incorporated by this method. 3. Resins need to be low in viscosity. 1 and 2 2 only 1 and 3 All 10). is a suitable resin for vacuum 1 point bag molding process. Polyesters Epoxy Vinylester None of these.
Answers
Filament winding is a manufacturing process used to produce composite structures, typically cylindrical or spherical shapes, such as pipes, pressure vessels, and rocket motor casings. Hence the correct option is D.
The filament winding process involves the precise winding of continuous fibers, typically made of materials like carbon or fiberglass, onto a rotating mandrel or mold.In filament winding process, it is possible to produce parts with reverse curvature, contrary to statement 1. Fiber direction can be changed within a layer of winding, so statement 2 is false. Composite product configuration should facilitate mandrel extraction, which is stated correctly in statement 3.
During the process, the fibers are impregnated with resin, which acts as a binding agent, providing strength and structural integrity to the final product. The winding pattern can be customized to achieve specific design requirements, such as varying fiber orientations or thicknesses in different sections of the structure.
Hence the correct option is D.
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NEED HELP
Match the related items.
1.frontal lobe
2.medulla
3.thalamus
4.cerebellum
5.cerebrum
6.cerebral cortex
7.left hemisphere
neurons
electrical relay
voluntary muscles
right body
coordination
involuntary muscles
emotions/ visual/ thought
Answers
Matching the related items with their description
1. Frontal lobe : Voluntary muscles
2. Medulla : Involuntary muscles
3. Thalamus : Electrical relay
4. Cerebellum : coordination
5. Cerebrum : emotions/ visual/ thought
6. Cerebral cortex : Neurons
7. Left hemisphere : right body
Parts of the BrainThe Medulla is a stemlike structure which makes up the lower part of the brain. It connects the spinal cord to the brain and it is cone-shaped neuronal mass, it controls autonomc functions in the human body. The cerbral cortex is the outermist of the brain which controls the mental capability of a human.
Hence we can conclude that matching each item to its decription is listed above
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3. List one advantage and disadvantage of a monocot root system.
Answers
A disadvantage is that this type of root is not favourable to the water scarce area or drought. So such plants live in the areas where water is easily available.
What is celebrated on 29th of July?
Answers
Answer:
my birthday just joking
the ans is world tiger day
Answer:
A lot of things are celebrated on 29th of July, and one thing is Global Tiger Day
Explanation:
What evidence from Wallace’s passage also supports Darwin’s theory?
Answers
Answer:
Darwin and Wallace both realized that if an animal has some trait that helps it to withstand the elements or to breed more successfully, it may leave more offspring behind than others. On average, the trait will become more common in the following generation, and the generation after that.
Explanation:
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in a study on inattentional blindness, what percentage of radiologists failed to detect the intentional insertion of the image of a gorilla in ct scans?
Answers
In a study on inattentional blindness, 83% of radiologists failed to detect the intentional insertion of the image of a gorilla in CT scans.
Inattentional blindness refers to the phenomenon where individuals fail to notice unexpected stimuli in their visual field when they are focused on a specific task or target. It has been studied in various contexts, including radiology.
One notable study that investigated inattentional blindness in radiology was conducted by Trafton et al. (2012). In this study, radiologists were asked to examine a series of lung CT scans for signs of lung nodules, which is a common task in their field. The researchers intentionally inserted an image of a gorilla into one of the scans as a distractor.
The study found that approximately 83% of radiologists failed to detect the gorilla image during their examination of the CT scans. This means that the majority of radiologists were so focused on their primary task of identifying lung nodules that they did not notice the unexpected gorilla image.
It's important to note that the specific percentage may vary depending on the study, methodology, and characteristics of the sample group. Different studies may investigate inattentional blindness in radiology using different images or tasks, leading to variations in the results.
If you are referring to a different study or have more specific details, please provide them so that I can provide a more accurate response.
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what is the function of topoisomerase? group of answer choices unwinding of the double helix elongating new dna at a replication fork by adding nucleotides to the existing chain adding methyl groups to bases of dna relieving strain in the dna ahead of the replication fork
Answers
Enzymes called topoisomerases are essential for many fundamental elements of brain activity. Their major functions—cleaving DNA strands to relieve torsional stress or untangling replicating DNA—provide crucial biological controls during transcription and replication.
Describe the purpose of a topoisomerase in this quiz.What part does the topoisomerase enzyme play in DNA replication? easing tension in the DNA that has been created before the replication fork due to the double helix's unwinding (Topoisomerases are enzymes involved in the over- or under-winding of DNA.
What does topoisomerase mean in plain English?A group of enzymes known as topoisomerases modify the way double-stranded DNA gets supercoiled. (Dna supercoils by coiling up like a telephone cable, shortening the molecule.)
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which fluorinated gasses played a large part in destroying the protective ozone layer?A. HCFCs and CFCsB. HFCsC. SF6sD. PFCs
Answers
Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun.
Answer: A
Name two potential pollinations???
Answers
Explanation:
male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.
Insect pollinators include bees, (honey bees, solitary species, bumblebees); pollen wasps (Masarinae); ants; flies including bee flies, hoverflies and mosquitoes; lepidopterans, both butterflies and moths; and flower beetles. Vertebrates, mainly bats and birds, but also some non-bat mammals (monkeys, lemurs, possums, rodents) and some lizards pollinate certain plants. Among the pollinating birds are hummingbirds, honeyeaters and sunbirds with long beaks; they pollinate a number of deep-throated flowers. Humans may also carry out artificial pollination.
A pollinator is different from a pollenizer, a plant that is a source of pollen for the pollination process.
Why do you suppose the latency differed between the median and lateral fibers?.
Answers
Answer- The Medial Giant Fiber is larger and therefore allows the transmission of action potentials down its length much faster than the Lateral Giant Fibers.
Explanation:
What are 2 things that two male polar bears might compete for in an ecosystem?
Answers
Answer:
Food and habitat resources
Explanation:
Ecosystems are communities that animals and organisms fight and survive in.
Answer:
bro ide man i can't even tell you man iExplanation:
9.What is Acceleration?
a) How long it takes me to win at fortnight.
b) The direction of an object.
c) A change in Motion.
d) How fast something is moving.
Answers
c is the correct answer
hope it helps
what is a chain of molecules linked with peptide bonds
Answers
Answer:
polypeptide chain
Explanation:
each amino acid unit in a polypeptide is called a residue. A polypeptide chain has polarity because its ends are different, with an α-amino group at one end and an α-carboxyl group at the other.
A chain of molecules connected by peptide bonds forms a polypeptide, a fundamental component of proteins. Peptide bonds are chemical bonds that link amino acids, the building blocks of proteins. This chain structure determines a protein's shape and function.
A polypeptide is made up of a series of molecules connected by peptide bonds and is an essential component of proteins. The coupling of amino acids is made easier by peptide bonds, which are produced by a condensation reaction between the carboxyl group of one amino acid and the amino group of another.
These amino acids, which are the building blocks of proteins, each have a distinct side chain, or R-group, which influences their characteristics. A polypeptide chain's amino acid composition determines the protein's three-dimensional shape, which is essential to its function. This complex link between structure and function emphasizes the importance of peptide bonds in biological processes.
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5) What is the contour interval used on this map?
Answers
The contour interval is 20 on this topographic map.
Explanation:
On this topographic map, we can see that the elevation is represented with contour lines, as is in most cases. Not all contour lines have a number next to them that tells us what is the particular elevation, but only every fifth contour line is numerically marked. The reason for this is so that there isn't too much information on the map that will obstruct the purpose of it.
The three contour lines that are numerically marked have values of 100, 200, and 300. As mentioned, the numerically marked contour lines are the fifth ones, so between the one with a value of 100 and 200, there are five contour lines. In order to get the contour interval, we simply need to divide with five the difference between two neighboring numerically marked contour lines.
100 / 5 = 20
The value of the contour interval is 20.
What two forms of energy are produced by nuclear fusion?
Answers
Answer:
Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors.
Explanation:
I got this online so I hope any of this helps. If not let me know.
Which of the following is not an advantage of asexual propagation?
Faster way to produce plants for sale.
For some plant varieties, it is the only way to reproduce.
Increases genetic diversity and benefits the health of the plant stock.
Plants are genetically identical, which is desirable in some cases.
Answers
Which enzymatic activity is primarily responsible for the proofreading step of DNA replication?
A) hydrolytic editing
B) tRNA synthetase activity
C) RNAseH activity
D) 3' to 5' exonuclease activity
E) 5' to 3' exonuclease activity
Answers
The enzymatic activity primarily responsible for the proofreading step of DNA replication is 3' to 5' exonuclease activity, option D is correct.
During DNA replication, DNA polymerases add nucleotides to the growing DNA strand in the 5' to 3' direction. However, occasionally incorrect nucleotides can be incorporated. To ensure high fidelity in DNA replication, DNA polymerases possess an exonuclease activity that allows them to remove the incorrectly incorporated nucleotides from the 3' end of the growing strand.
This exonuclease activity functions by cleaving the phosphodiester bond between the incorrect nucleotide and the preceding nucleotide, effectively excising the incorrect base. By removing the mismatched nucleotide, DNA polymerases can replace it with the correct nucleotide, thereby increasing the accuracy of DNA replication, option D is correct.
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