What component of membrane contains a hydrophobic region and acts as the primary barrier to most foreign substances?
Phospholipids are the component of membrane contains a hydrophobic region and acts as the primary barrier to most foreign substances.
What is hydrophobic region?A typical monomeric globular protein has a single, sizable, interconnected hydrophobic region that makes up around 60% of the solvent-accessible surface area. This region is generated from the faces of apolar atoms. The distribution of acyl chains and sterols in the hydrophobic area affects membrane stiffness and fluidity.
The primary constituents of the bilayer of phospholipids that composes the plasma membrane. Because they are amphipathic, or have both hydrophilic and hydrophobic areas, they are well suited for this function.
Thus, phospholipids are the component of membrane contains a hydrophobic region and acts as the primary barrier to most foreign substances.
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Which is not an input into the Calvin-Benson cycle? A. NADPH B. CO2 C. ATP D. H20
Answer: D. H₂0
Calvin-Benson cycle is a set of chemical reactions that takes place in chloroplast during the process of photosynthesis. This is a light- independent cycle as the light energy is already trapped in light dependent cycle of photosynthesis. It utilizes NADPH and ATP products of light dependent reactions for synthesis of trios sugar glyceraldehyde-3-phosphate as product of Calvin-Benson cycle.
Molecules such as polypeptides are too large to travel through transport proteins and must enter or leave cells through ____________ transport.
Explain whether a conformer or a regulator could tolerate a wider range of conditions.
What is the acceleration of a 45 kg mass pushed with 15 N of force? What is the acceleration if the force changes to 25 N? What if the mass changes to 70 kg?
Answer:
A= 0.33m/s
A=0.56m/s
A=0.21m/s
A= 0.35m/s
Explanation:
To calculate acceleration, you will use the formulae,
Force=mass ×acceleration.
F=MA.
If the force is 15N, Mass is 45g , acceleration ?
15=45 × a
15=45a.
Divide through by 45 to get a
a=15/45
Acceleration is 0.33m/s
B) acceleration if forces changes to 25N.
F=MA
F= 25, M= 45 a=?
25=45 × a
25= 45a
Divide through by 45 to get a.
a= 25/45
Acceleration is 0.56m/s
C) Acceleration if mass changes to 70N.
F= MA
15= 70 × a.
15= 70a
Divide through by 70
15/70= a
Acceleration is 0.21m/s
If the Force is 25N, Mass is 70kg, acceleration will be.
F=MA
25=70 × a
25=70a
Acceleration= 25/70
Acceleration is 0.35m/s
Explain how our respiratory and circulatory systems relate to cellular respiration and ATP.
Trace the steps involved in ecological succession in an area completely destroyed by a catastrophic event, such as a volcano. WHAT ORDER?
-Climax community of deciduous hardwood tree species becomes established.
-Herbaceous plants and small shrubs enter the area.
-Pioneer species, such as lichen and moss enter soil-less area.
-Grass species move into the area.
-Pioneer species help break down rocks present to form soil.
-Small trees and evergreens become established.
1.
2.
3.
4.
5.
6.
Final answer:
The steps involved in ecological succession in an area completely destroyed by a catastrophic event, such as a volcano, are: 1) Pioneer species, such as lichen and moss, enter the soil-less area. 2) Pioneer species help break down rocks present to form soil. 3) Grass species move into the area. 4) Herbaceous plants and small shrubs enter the area. 5) Small trees and evergreens become established. 6) Climax community of deciduous hardwood tree species becomes established.
Explanation:
Pioneer species, such as lichen and moss, enter the soil-less area.Pioneer species help break down rocks present to form soil.Grass species move into the area.Herbaceous plants and small shrubs enter the area.Small trees and evergreens become established.Climax community of deciduous hardwood tree species becomes established.After a volcanic eruption, ecological succession begins with pioneer species like lichens, which help form soil for other plants. Herbaceous plants and grasses follow, after which small trees and evergreens establish, leading eventually to a climax community of hardwood tree species.
Explanation:Stages of Ecological Succession After a Volcanic EruptionPioneer species, such as lichen and moss enter soil-less area. These are the hardy species that can colonize the new land formed by lava from a volcanic eruption.Pioneer species help break down rocks present to form soil. As they grow and die, they contribute to soil formation, making the environment more suitable for other species.Herbaceous plants and small shrubs enter the area. They are less hardy than pioneer species but more so than larger plants and can establish themselves once some soil is available.Grass species move into the area, which indicates a more stable soil environment capable of supporting diverse plant life.Small trees and evergreens become established. These intermediate species contribute to ongoing soil development and nutrient cycles.Climax community of deciduous hardwood tree species becomes established. This is the final stage, where a stable and mature ecosystem is formed, and it typically remains until the next disturbance.Where are drainage pads most often needed during post mortem care?
Drainage pads are required during post mortem care to manage bodily fluids in areas affected by gravity or trauma, such as the mouth, nose, or any incisions. They are particularly important in forensic cases with trauma evidence to maintain the integrity of the remains for potential legal proceedings or further examinations.
Drainage pads are most often needed during post mortem care in areas where bodily fluids are likely to leak due to the effects of gravity after death. These areas can include the mouth, nose, ears, and any incisions made during an autopsy or resulting from trauma. Particularly in cases where there is evidence of trauma before or around the time of death, such as injuries from sharp objects or gunshot wounds, the care of these wounds requires attention to prevent leakage.
For instance, cuts to the bone made by sharp implements, which often follow a straight line as seen in various forensic studies, indicate a need for careful management during post mortem procedures. Similarly, the attending person might need to dress wounds or clean areas affected by complications such as gangrene. The containment of fluids and the preservation of the remains are critical, especially if the case may proceed to legal investigations or require further medical examinations, hence the importance of a correct and professional approach to post mortem care.
A client presents to the ed reporting anxiety and chest pain after shoveling heavy snow that morning. the client says that nitroglycerin has not been taken for months but upon experieincing this chest pain did take three nitroglycerin tablets. although the pain has lessened, the client states, "they did not work all that well." the client shows the nurse the nitroglycerin bottle; the prescription was filled 12 months ago. the nurse anticipates which order by the physician?
The "essential nutrients" for proper human nutrition include _____.
Final answer:
Essential nutrients necessary for human nutrition include carbohydrates, proteins, lipids, water, vitamins, and minerals. These are categorized into macronutrients needed in larger amounts and micronutrients required in smaller amounts but are vital for body processes like tissue maintenance and blood clotting.
Explanation:
The essential nutrients for proper human nutrition include six major classes: carbohydrates, proteins, lipids (fats), water, vitamins, and minerals. These substances are deemed essential because they cannot be synthesized by the body and must be obtained from food.
Carbohydrates, proteins, and lipids are considered macronutrients, which the body requires in larger quantities for energy and body building. Conversely, vitamins and minerals are categorized as micronutrients, needed in smaller amounts but crucial for various body processes, including maintaining connective tissue and enabling blood clotting with the help of vitamins such as vitamin A and vitamin K, respectively.
It is important to note that while the body cannot store micronutrients, they must be consumed regularly to support bodily function. Vitamins and minerals are critical for ensuring regulation and good health, aiding in processes such as maintaining a stable nervous system and blood clotting.
Remembering how to ride your bike is an example of a __________memory.
Having the ability o remember how to ride a bike is an example of a long term memory. This is procedural memory; knowing how to do something, having the skills and the formation of simple associations. These skills are able to be recalled at any time.
Answer: Procedural
Procedural memory helps people understand how stuff works. It is primarily involves in knowing new motor skills like learning how to ride a bike or play a piano. The brain begin building and assigning interneuron pathways for cerebellum and basal ganglia to outflow muscle information to the legs or hands developing motor coordination.
Moreover, procedural memory is part of the long-term memory that is responsible for storing information on how to perform certain procedures.
The fibrous connective tissue that makes up the outside covering of the diaphysis is the
Answer: fibrous periosteum
The diaphysis is the main shaft of a long bone which is made up of cortical bone which contains bone marrow and fats. It is covered by a fibrous connective tissue called the fibrous periosteum. The cells in this layer are densely packed and contain blood vessels, nerve endings and lymphatic.
Researchers have identified a neurotransmitter called _____ that works like thc, the active ingredient in marijuana. excessive use of marijuana has been shown to reduce the production of this neurotransmitter.
A feature unique to human teeth and found generally in hominini teeth is:
A 19-year-old primigravida at 38 weeks' gestation, in active labor for the past 8 hours, is admitted to the hospital accompanied by her mother. on admission, the client's cervix is 5 cm dilated, her blood pressure is 120/84 mm hg, and she is breathing rapidly, feeling dizzy and light-headed. the nurse determines that the client is most likely experiencing effects of which factor?
In what ways are animals treated differently in sustainable agriculutre
The liquid portion of blood that comprises 55 of the blood's volume is called
Bacteria are excellent candidates for genetic engineering because?
These two processes help cycle carbon and oxygen through ecosystems: __________. (Points : 2)
A evaporation and condensation
B transpiration and respiration
C photosynthesis and respiration
D transpiration and photosynthesis
Photosynthesis and respiration are the two processes that help cycle carbon and oxygen through ecosystems.
Explanation:C Photosynthesis and respiration.Photosynthesis is the process by which plants and some other organisms convert light energy into chemical energy in the form of glucose. This process uses carbon dioxide and water to produce glucose and oxygen. Respiration, on the other hand, is the process by which organisms break down glucose and release energy, carbon dioxide, and water. Together, photosynthesis and respiration help cycle carbon and oxygen through ecosystems.
A primigravid client, age 20, has just completed a difficult, forceps-assisted delivery of twins. her labor was unusually long and required oxytocin augmentation. the nurse who's caring for her should stay alert for:
The actin and myosin filaments in a muscle contract with enough force to produce a contraction. They don't hold each other still while pulling inward.
Myosin heads on myosin filaments interact with actin filaments during muscle contraction.
Actin filaments are pulled inward by the myosin heads, which are then released and reattached farther down the filament in a cycle. The sliding filament mechanism is the name given to this phenomenon.
Myosin heads join actin filaments in cross-bridges as a result of ATP hydrolysis.
Thus, The actin and myosin filaments in a muscle contract with enough force to produce a contraction. They don't hold each other still while pulling inward.
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A mummy is discovered whose stone tomb includes cloth, food, and other organic remains. what dating method would most likely be used to date the tomb?
a. electron spin resonance
b. biostratigraphy
c. dendrochronology
d. carbon 14
How did Avery help build our understanding of genetics?
Answer:
The correct answer will be- He showed that transforming material was DNA in organisms.
Explanation:
Oswald Avery and colleagues worked on the experiments of Griffith on the transformation process and showed that the transforming material was DNA in Griffith experiment.
They grew the cultures of heat-killed S (virulent) bacteria and added DNases, RNases and proteases to the culture plates. Then R (avirulent) bacteria were added to the cultures. The S bacteria were not found in the cultures with DNases enzymes as DNases denatured the DNA molecule, so bacteria were not transformed.
This showed that DNA is the transforming material in the Griffith experiment.
Patty is 5 feet tall and weighs 87 pounds, yet when she looks in the mirror she thinks she is too fat. she does aerobics for two hours daily and eats very little. patty appears to suffer from _____.
There are a variety of problems that can become complications after a fracture. which is described as a condition that occurs from interruption of the blood supply to the fracture fragments after which the bone tissue dies, most commonly in the femoral head?
Your patient is an 18-year-old male who stepped on a nail in the barnyard. the nail penetrated his tennis shoe and punctured his foot. on your arrival, the patient has removed the nail and the shoe. the wound is about 2 mm in diameter with minor bleeding that has been controlled. the skin around the wound is red. the patient does not want to be transported but asks if you can give him "some ointment and a band-aid." you should explain to the patient that this type of injury is associated with an increased risk of:
The firm connective tissue in joints that covers the contacting surfaces of bones is called
WILL GIVE BRAINLEST Radon is a kind of _____.
nuclear fission byproduct
photochemical smog
nuclear fuel
indoor air pollutant
Answer: Indoor air pollutant
Air pollution can be defined as contamination of atmospheric air by wastes, which can occur in solid, liquid and gaseous form. These pollutants can affect health of humans, plants and animals. Radon is a colorless, and odorless gas. It is a potential air pollutant. It is a dense gas which sinks in the air. It is often found at the basement of homes, especially in the areas where shale and boulders are present in the soil. Radon is produced as a result of radioactive decay of radium in the soil. Radon gas gets attach to the dust and other particles present in the air. It enters inside the lungs, produces alpha and beta radiation that damages DNA, and results in lung cancer.
Determine there oxidation state of Cl in NaClO3.
I believe that the answer is 1+??, but am a little unsure.,
What is the approximate energy content in kcal per gram of most sugar alcohols?
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Which statement correctly explains the relationship between a population and a species?
A) A population is a group of the same species that all live in a particular area together.
B) A population is a group made up of different species that all live in a particular area together.
C) A population is a group of the same species that are spread out in different ecosystems and do not interact.
D) A population is a group of different species that are spread out in different ecosystems and do not interact.