The plasma membrane's capacity to let some chemicals through while preventing others is known as selective permeability.
What causes permeability in cells?A phospholipid is a type of lipid composed of glycerol, two fatty acid chains, and a group that contains phosphate. The hydrophilic (water-loving) head is made up of the phosphate group, and the hydrophobic (water-fearing) tails are made up of the fatty acid chains.
Function of PhospholipidsA stable partition containing phospholipids separates two water-based compartments. The inside of the membrane is formed by the hydrophobic tails attached to it. The hydrophilic heads on the opposite end, which face outward, are exposed to aqueous fluids both within and outside of the cell.
To know more about Phospholipids, visit-https://brainly.com/question/20561742
#SPJ4
which of the following does not occur due to the effects of aging on the joints? select one: a. decreased range of motion b. decreased flexibility and elasticity c. increased production of synovial fluid d. weakening of muscles e. decreased tissue repair
Increased production of synovial fluid does not occur due to the effects of aging on the joints
Bones do not directly touch one another in a joint. They are padded by articular cartilage, which lines your joints, synovial membranes around the joint, and lubricating fluid inside your joints (synovial fluid). The amount of lubricating fluid inside your joints diminishes as you aging, and the cartilage gets thinner, making joint movement stiffer and less flexible. Joint stiffness is also often caused by the tendency of ligaments to shorten and lose some flexibility.
Lack of exercise is a major contributor to many of these joint changes that come with ageing. The fluid is kept moving by joint movement and the corresponding "stress" that comes with it. The cartilage contracts and stiffens with inactivity, decreasing joint mobility.
Learn more about Aging here:
https://brainly.com/question/479364
#SPJ4
Which organism from the video is the least useful for relative dating?
answer: scallop
this is possibly because scallops are still common vs. any other option that was prehistoric [ferns, trilobite, dino, sycamore leaf]
The organism that is least useful for the process of relative dating: scallop.
Relative dating is a technique or method in Geology that is deployed in order to ascertain the relative sequence of events that have occurred in the pasts. Relative dating is helpful as it can tell about the relative order of past events without the estimation of their absolute age. Relative dating techniques help in determining the relative age of a particular item of interest in comparison to other objects found at a particular site.
The question is incomplete. The complete question is:-
Which organism from the video is the least useful for relative dating?
Hints:-
sycamore leaf
scallop
dinosaur
fern
To learn more about scallop here
https://brainly.com/question/9574679
#SPJ1
If you pinch your nose while you are putting a piece of food into your mouth, what are you going to experience?.
If you pinch your nose while putting food in your mouth, you may experience lack of taste in the food.
It did appear that smell had an impact. However, the ability to taste was not completely impaired by nose plugs. Chewing certain foods allows aromas to reach the nose through the back of the mouth even when the nostrils are closed because the nose and throat share essentially the same airway.
Molecules from your food travel up your throat to the olfactory epithelium, where they activate odor receptors, when you eat.
Retronasal olfaction, as opposed to orthonasal olfaction, which occurs when you sniff through your nose, is prevented by pinching your nose. Retronasal olfaction is very important to your sense of flavor, which many other people mistake for "taste.", we can demonstrate this with jelly beans: you can still taste the sweetness of the jelly bean by pinching your nose, but you can't tell the difference between a strawberry and a grape. One of the most common complaints made by people who have lost their sense of smell is that food no longer "tastes" good because it lacks a lot of flavor.
Know more about Sense of smell here: https://brainly.com/question/13153033
#SPJ4
One of the difficulties of Earth science is that
Answer: A
Explanation:
most aec consoles permit activation of a. all three cells simultaneously. b. all three cells in any combination. c. the outer cells when the center cell is inactivated. d. the center cell and either outer cell.
Most AEC (Automatic Exposure Control) consoles permit activation of (b) all three cells in any combination.
An Automatic Exposure Control (AEC) console is a tool that is found on most of the advanced radiographic units. It helps the radiographer in ascertaining the radiation exposure (in terms of quantity) in order to create a quality image.
An AEC console is deployed to regulate invariably the quantity of radiation approaching the image receptors by terminating the length of exposure. Automatic Exposure Control (AEC) consoles are also known as automatic exposure devices. These consoles are exceptionally good at producing persistent levels of exposure if utilized accordingly.
To learn more about radiographic here
https://brainly.com/question/14526977
#SPJ1
A chemical that is toxic to snakes is accidentally released into this ecosystem.
The snakes are poisoned, sharply (dramatically) decreasing the number of snakes.
1. What will happen to the population of insects (bugs)?
2. What will happen to the population of grass ?
3. What will happen to the population of Cougars?
If snakes number will decrease then population of insects will increase. Grass population will decrease. The population of Cougars remains the same.
What is ecosystem?
An ecosystem is a place where plants, animals, and other organisms interact with the environment, weather, and other variables to form a bubble of life. In ecosystems, biotic and abiotic factors—or nonliving components—coexist.
Biotic factors include plants, animals, and other species. Abiotic factors include rocks, temperature, and humidity. Each element of an ecosystem depends on every other element, either directly or indirectly.
The kinds of plants that may thrive there, for instance, are influenced by the regular temperature variations that occur in an ecosystem.
Therefore, If snakes number will decrease then population of insects will increase. Grass population will decrease. The population of Cougars remains the same.
To learn more about ecosystem, refer to the link:
https://brainly.com/question/13979184
#SPJ1
interrupting the night with a flash of light can trigger flowering in a long-day plant. why doesn't introducing a short period of darkness during the day cause a short-day plant to flower?
to know more about flowering plants, go to:
brainly.com/question/24292840
#SPJ4
explain how the fluidity of the plasma membrane is maintained by the presence of unsaturated fatty acids and cholesterol. describe an adaptation used by organisms in cold environments to maintain a fluid membrane.
Unsaturated fatty acids increase the fluidity of membrane and cholesterol brings stability to the cell membrane.
What is plasma membrane and how is it maintained by the presence of unsaturated fatty acids?Plasma membrane is the membrane outlines the cell separating the interior of the cell from the outside environment.Unsaturated fatty acids increases the fluidity of the plasma membrane and helps to maintain the fluidity for long.Likewise cholesterol have a great significance in the fluidity of the membrane too, as it brings stability.Plasma membrane is same as cell membrane , as it outlines the cell and is selective permeable.Cholesterol stabilizes the plasma membrane helps to maintain the fluidity.To know more about plasma membrane visit:
https://brainly.com/question/14727404
#SPJ4
When an experiment is repeated and the new results are different from the original results, what could you assume to be true?
The original experiment may be inaccurate and further experimentation is needed.
The accuracy of measurements depends on the quality of the measuring equipment and the skill of the scientists involved. For the data to be considered reliable the variability of the values should be small. Repeated scientific research increases credibility. Results may change over the course of different studies or under different conditions.
It is therefore important that the experiment itself is reproducible. A reproducible experiment should but need not give the same results when performed by different people at different times and preferably under similar conditions. Repeating an experiment multiple times can help determine whether the data are random or normal. Avoid jumping to conclusions without sufficient evidence.
Learn more about An experiment here:-https://brainly.com/question/25303029
#SPJ4
(30)Can an organism with a homozygous dominant genotype have an offspring with the recessive phenotype? Explain your answer
(in depth explanation pls ;-;)
No, an organism with a homozygous dominant genotype cannot have an offspring with the recessive phenotype because when crossed with hetero/ homozygous , the offspring will contain a dominant allele.
What is a genotype?An individual's genotype, often known as their genetic make-up, refers to the genes that are responsible for a set of characteristics or qualities that are manifested in that individual.
The phenotype is the outward manifestation of how a gene is expressed. The phenotype is the sum total of all the genes in an individual that are either expressed or can be observed in their physical form.
It is only possible for the phenotype associated with recessive alleles to be expressed in an organism if that organism possesses two copies of the recessive allele, making it homozygous for the recessive allele. This indicates that the genotype of an organism that possesses a dominant phenotype might either be homozygous for the dominant allele or heterozygous for the dominant allele.
Therefore, an organism with a homozygous dominant genotype cannot have an offspring with the recessive phenotype.
Learn more about genotype, here:
https://brainly.com/question/26124553
#SPJ1
List four different Bible phrases that show how the Bible claims to be the Word of God.
40-point mark as brainly
Answer: 1. God created the heavens and the earth. 2. He sent his son to die for our sins. 3. he preforms mericles. 4. He Arose from the grave.
Explanation:
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be competent, equipped for every good work. (2 Timothy 3:16-17)
It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life. (John 6:63)
Every word of God proves true; he is a shield to those who take refuge in him. (Proverbs 30:5)
For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart. (Hebrews 4:12)
I hope this helps!
What is an advantage to the longer duration of cardiac action potential compared to the skeletal muscle action potential?.
Tetanic contraction is avoided by the longer duration of cardiac action potential, allowing the heart chambers to relax and fill with blood before the next contraction.
Compared to skeletal muscle, the refractory period of cardiac muscle is significantly longer. This avoids tetanus and guarantees that there is adequate time between each contraction for the heart chamber to fill with blood before the next one. Accordingly, cardiac muscle is benefitted with the longer duration of its action potential.
Similar to skeletal muscle, the influx of sodium ions results in an initial depolarization; however, the depolarization in cardiac muscle is sustained for a longer period of time thanks to the influx of calcium ions.
To know more about muscles, refer to the following link:
https://brainly.com/question/25066770
#SPJ4
. what is the stage of cell division in a diploid organism if you see seven chromosomes, each consisting of a pair of sister chromatids? mitosis prophase mitosis anaphase meiosis i anaphase meiosis ii prophase
The stage of cell division in a diploid organism if you see seven chromosomes, each consisting of a pair of sister chromatids meiosis II prophase. Option D.
Diploid cells have two complete sets of chromosomes. Most human cells are diploid and composed of 23 pairs of chromosomes for a total of 46 chromosomes. These are 22 pairs of autosomes and 1 pair of sex chromosomes. During telophase, sister chromatids become daughter chromosomes. Mitosis has five main stages prophase metaphase anaphase telophase, and cytokinesis.
Meiosis is the process by which diploid cells become haploid cells. The difference between haploid and diploid cells is that haploid cells contain one complete set of chromosomes, while diploid cells contain two complete sets of chromosomes. Meiosis involves the division of the diploid parent cell. When mitosis is complete, cells have two sets of 46 chromosomes, each surrounded by its own nuclear membrane.
Learn more about Diploid cells here:-https://brainly.com/question/16639332
#SPJ4
bowling ball collides with a pin and pushes the pin toward the right. Which describes the reaction force?
The pin pushes the bowling ball toward the right.
The pin pushes the bowling ball toward the left.
The bowling ball pulls the pin toward the right.
The bowling ball pulls the pin toward the left.
The pin pushes the bowling ball toward the left.
Explanation:
Because Newton's third law of motion states that for every action there is an equal and opposite reaction the only possible answer is The pin pushes the bowling ball toward the left.
Answer:
The pin pushes the bowling ball toward the left.
Reaction force is always equal but opposite in direction.
I hope this is helpful
Define and give an example of : a. Genotype: b. Homozygous c. Heterozygous d. Phenotype
a) Genotype: The genetic composition of an organism is its genotype. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.
Eg: RR,Rr,rr can be the genotype of the color of a flower.
b) Homozygous: It is a gene region where there are two identical alleles present. Two alleles with the same variation or two alleles that are normal can both be present in a homozygous genotype
Eg: BB is the homozygous gene for a dominant character like brown eyes in humans.
c) Heterozygous: It is a gene region where there are two distinct alleles present. One normal allele and one mutated allele, or two distinct mutated alleles, can make up a heterozygous genotype.
Eg: Bb is the heterozygous gene for brown eyes in humans.
d) Phenotype: It describes a person's observable characteristics. Both a person's genomic makeup (genotype) and environmental circumstances affect their phenotype.
Example: Color of human eyes like brown, blue, black
To know more about genotype, click on https://brainly.com/question/902712
Animals aresingle or multicellular?
Answer:
Animals are multicellular
Labeling the human Skeleton system and labeling nervous system
Completed! Finnnnnnnnn
the value of psi in root tissue of a plant has been found to be 4.6 bars. if you place this root tissue in a 0.2m sucrose solution at 20 c in an open beaker. what is the psi of the solution? which direction will the net flow of water be?
Water potential is calculated using the formula = S + P. The relationship between osmotic potential and solute concentration is direct. The likelihood that water in a solution may undergo osmosis reduces as a solution's solute concentration rises.
What is the potential of water?Water potential is higher in pure water. Purified water's water potential has traditionally been set at zero. This implies that any solution's water potential will always be negative.
The value of base water potential begins to decline at a temperature increase of 5 to 20 °C, whereas base water potential begins to grow at a temperature increase of 20 to 40 °C.
To learn more about potential of water refer to:
https://brainly.com/question/17887421
#SPJ1
A student is performing a chemical analysis of xylem sap. This student should not expect to find much _____.
A student is performing a chemical analysis of xylem sap. This student should not expect to find much sugar.
The plants contain two vascular bundles which are referred to as the phloem vascular bundle and the xylem vascular bundle. The xylem and the phloem flow across a plant.
The phloem is the vascular bundle that is responsible for the transportation of food from the leaves to all other parts of the plant.
The xylem is the vascular bundle that is responsible for the transportation of water from the roots to all the parts of the plant.
Hence, the food 'sugar' will not be found in the xylem sap as it will contain water. Sugar will be found in the phloem.
To learn more about xylem sap, click here:
https://brainly.com/question/14120107
#SPJ4
What is the density of seawater with a temperature of 10°C and a salinity of 35 ppt?
Answer:
P(T)=P+ a1*T+a2*T2+a3*T3+a4 *T4+a5 *T5
Explanation
Given that the temperature = 10 degrees Celsius
Salinity= 35ppt
Density of the seawater is 996.73 kg/m3
A nutrition facts label lists total fat as 10 grams and saturated fat as 4 grams. How many calories does fat provide?.
90 calories is the amount of calories does the fat consisting of total fat as 10 grams and saturated fat as 4 grams.
One of the six nutrients your body requires to be healthy is fat. Calories are produced by proteins, lipids, and carbohydrates. Protein and carbohydrates both contain 4 calories per gram. There are 9 calories in 1 gram of fat.
Similar to a teaspoon or an inch, a calorie is a unit of measurement. Calories are the units of energy used by your body during food digestion and absorption. A meal might provide your body extra energy if it has more calories. Knowing that there are 9 calorie per 1 gram of fat:
Total calories = 10 grams of fat x (9 calories/1 gram of fat)
Total calories = 90 calories
Here is another question with an answer similar to this about calorie computation: https://brainly.com/question/27327253
#SPJ4
If one nerve stimulus arrives at a muscle fiber so soon that the fiber has only partially relaxed from the previous twitch, the most likely result will be __________.
If one nerve stimulus arrives at a muscle fiber so soon that the fiber has only partially relaxed from the previous twitch, the most likely result will be paralyze.
What is nerve?The lag phase refers to the interval between a motor neuron's activation and the onset of muscle contraction (sometimes called the latent phase). A signal known as an action potential travels to the motor neuron's end during the lag period (axon terminal).
Acetylcholine is released as a result, and the motor end plate depolarizes. The sarcoplasmic reticulum releases calcium as a result of the depolarization, and calcium then binds to troponin, exposing the myosin binding site.
The actual muscular contraction that creates tension in the muscle occurs next. The contraction phase is the following stage. Actin and myosin cross-bridges form during the contraction phase. Actin is moved by myosin, which also releases and modifies cross-bridges.
Therefore, If one nerve stimulus arrives at a muscle fiber so soon that the fiber has only partially relaxed from the previous twitch, the most likely result will be paralyze.
To learn more about paralyze, refer to the link:
https://brainly.com/question/27369833
#SPJ1
Answer this question and ill mark
Answer: D. Data demonstrating a relationship between the amount of sun exposure and incidences of skin cancer.
Explanation:
Going through the other answers,
A doesn't seem logical as it only shows the location of DNA in a cell, which has nothing to do with inferencing the sun.
B also doesn't make sense since corelation[tex]\neq[/tex]causation. Just because someone had sunburns as a child doesn't mean they'll develop skin cancer.
C is also not the answer because many companies advocate that their products protect skin against UV rays, however Ultra-Violet radiation from the sun is hard to defend against.
Therefore, the answer is D since the amount of Sun exposure is usually a direct cause of skin cancer.
the vo2max provides a quantitative measure of a person's capacity for . . . group of answer choices anaerobic glycolysis aerobic atp resynthesis maximum lactate production none of the above
The correct answer is Aerobic ATP resynthesis.
What is vo2max ?
vo2max is the measurement of maximum amount of oxygen our body uses during exercises. Here, v represents volume, o2 is oxygen and max represents maximum.
What is Aerobic ATP resynythesis ?
It is the process of converting energy into Adenosine Triphosphate(ATP) by using oxygen present in blood. It occurs in mitochondria.
Therefore, vo2max provides a quantitative measure of a person's capacity for Aerobic ATP resynythesis.
To learn more about vo2 max from the given link
https://brainly.in/question/39767177
#SPJ4
pls help once i finish this i can sleep!!!!
Identify the brain stem in the diagram below.
C
A
D
B
The answer is A.
I wish you a restful sleep.
two structures that help E. coli move???
I NEED HELPP
PLEASE
In glycolysis, a glucose molecule is split into two molecules of ______, and energy is harvested as atp and nadh.
A glucose molecule is split into two molecules of Pyruvate molecules.
An essential molecule in biology is pyruvate. It is a byproduct of the glucose metabolism process called glycolysis. One of two processes results in the breakdown of one glucose molecule into two pyruvate molecules, which are then used to produce further energy.
Pyruvate enters the citric acid cycle under aerobic conditions and proceeds through oxidative phosphorylation, which results in the net synthesis of 32 ATP molecules. Pyruvate is converted to lactate in anaerobic conditions by anaerobic glycolysis. During anaerobic respiration, two ATP molecules are produced.
The end product of glycolysis, an anaerobic process that breaks down glucose, is pyruvate. Pyruvate can be transformed into ethanol, the amino acid alanine, fatty acids or energy through acetyl-CoA, carbohydrates through gluconeo genesis, and fatty acids or energy.
To know more about pyruvate molecules refer to the given link:
https://brainly.com/question/28904313?referrer=searchResults
#SPJ4
what medical technology have some chinese chosen to pursue in order to increase the possibility of multiple children in a single pregnancy
The use of fertility drugs is the technology used by some Chinese that can increase the possibility of multiple children in a single pregnancy.
Fertility drugs are the medications that serve various functions like production of eggs or sperms, or their quality. Some drugs can speed up the growth and maturity of egg cells, resulting in the release of more than one egg cell at the same time. This is how multiple children are born from a single pregnancy.
Pregnancy is the stage when the fusion of the male and female gamete happens and the fetus develops inside the body of the mother. For humans, this time period is of 9 months.
To know more about pregnancy, here
brainly.com/question/26430164
#SPJ1
effects of poor sanitation
Answer: diseases and it'll lead to pollution
Explanation:
The main functions of blood are to A digest food and break it down to be used as energy. B carry oxygen, nutrients, and wastes; fight disease; and regulate temperature. C carry messages through all the body to direct body movement. D carry messages to parts of cells to tell them how to develop.