Answer:
A cell membrane is made of two layers.
The cell membrane is composed by a phospholipid bilayer where the interior side is hydrophobic and non-polar, while the outside is hydrophilic and polar
Pores and proteins in the cell membrane allow passage through it.
The pores and proteins in the cell membrane have several functions such as, for example, cell signaling (proteins) and selective transport (pores)
Pores and proteins in the cell membrane allow passage through it.
A cell membrane is made of two layers.
A botanist created a linear model to predict plant height from soil acidity (pH level) for a certain type of plant. The slope of the model was 2.5 centimeters per pH level, the standard deviation of the sample of plant heights was 4 centimeters, and the standard deviation of the soil acidity was 1 pH level. What is the value of the correlation coefficient?
Answer:
0.625
Explanation:
The slope (m) of a linear regression line is ...
[tex]m=r_{xy}\cdot\dfrac{s_y}{s_x}[/tex]
Then we have ...
[tex]2.5=r_{xy}\cdot\dfrac{4}{1}\\\\\dfrac{2.5}{4}=r_{xy}=0.625[/tex]
The value of the correlation coefficient is 0.625.
Here, we are required to find the value of the correlation coefficient given the slope of the regression model and the standard deviation of the dependent and independent variables.
The value of the correlation coefficient is 0.625
and it is dimensionless.
The relationship between the slope of a regression model and the correlation coefficient is given by;
m = r (Sy/Sx)
where
m= slope of the regression model = 2.5cm/pH.r = the correlation coefficient = ?Sy = The standard deviation of the dependent variable i.e Plant height = 4cmSx = The standard deviation of the independent variable i.e soil acidity(pH level) = 1pHTherefore;
2.5 = r × (4/1)
r = 2.5/4
r = 0.625
P.S: It is important to know that the correlation coefficient is a dimensionless parameter.
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Which observation about the phosphorus tracer supported the researchers' conclusion that DNA, and not proteins, transmits genetic information? A. It was in the supernatant only. B. It was in the pellet only. C. It was in both the pellet and the supernatant. D. It was in neither the pellet nor the supernatant.
Answer:
Hershey and Chase demonstrated that genetic material is contained in the DNA molecule. By using bacteriophages they observed that DNA, but not proteins, contains the genetic material. These researchers tagged DNA with radioactive phosphorus and then separated bacteria and protein phages by centrifugation, observing that bacterial pellet was radioactive
The radioactive phosphorus tracer was found only in the pellet (option B), indicating that DNA transmits genetic information.
Explanation:The observation that supports the researchers' conclusion that DNA, and not proteins, transmits genetic information is that the radioactive phosphorus tracer was found only in the pellet, which contained the heavier bacterial cells, and not in the supernatant.
This indicates that the genetic material, which carries information to produce more phage particles, is present in the pellet along with the bacterial cells. Since phosphorus is found in DNA but not proteins, the presence of the radioactive phosphorus in the pellet confirms that DNA is indeed the genetic material.
What is the main difference between the Grasslands and the Savanna?
Which muscles is involved in normal quiet inspiration?
Answer:
The muscles that contribute to quiet breathing are the external intercostal muscles and the diaphragm.
Explanation: When drawing breath, the external intercostal muscles and diaphragm contract simultaneously.
Which of the following is NOT true about cells? (PLEASE ANSWER ASAP!!)
A. Cells never change.
B. Cells come from pre-existing cells.
C. The time it takes a cell to complete the cell cycle depends on the type of cell that is diving.
D. A cell spends most of its life in interphase.
The statement which is not true about cells is cells never change. Thus, option A is correct.
What is cell?The cell function of an animal cell that has been to perform like the hormone and it engage the production of the energy for the cells. The cell function of a plant cell is to carry out all of the functions necessary for survival.
Animal cells are the eukaryotic cells which has been surrounded by the plasma membrane. It contains the nucleus, and the organelles that are membrane bound. Plant cells are the basic building block of plant life and they include the cell wall and central vacuole which works together to give the cell rigidity.
Therefore, The statement which is not true about cells is cells never change. Thus, option A is correct.
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which statement best describes a climax community
Answer:
Climax communities contain few species, including those with large body sizes. Climax communities contain few species and include only those with small body sizes. Climax communities contain many species, including those with large body sizes.
Explanation:
1. Which of these terms means scratches in rocks caused by glaciers?
2 points
A. Striations
O
B. Stripes
O
C. Stratosphere
O
D. Stretch marks
Answer:
A. Striations
Explanation:
Final answer:
A. Striations are grooves or scratches in rocks caused by glaciers. They provide evidence for the direction and force of past glacial movements and are formed through glacial erosion processes like abrasion.
Explanation:
The term that means scratches in rocks caused by glaciers is Striations. These striations, or glacial striae, are lines or grooves cut into bedrock by debris that is carried along the base of a glacier. Evidence of this geological process includes not only the striations themselves but also rock flour, which is finely ground rock produced by glacial abrasion. Glacial striations are a key indicator of past glacial movement and can be found at various scales, from microscopic to several meters in depth and length. They offer clues indicating the direction of ice flow and can be used alongside other features, such as moraines and drumlins, to understand glacial processes.
What system hosts more biodiversity than any other ecosystem in the oceans?
Answer:
The coral reef
Explanation:
The coral reef system is widely known to be, and arguably the part of the ocean/marine ecosystem that hosts more biodiversity than all other ecosystems. The coral reef has several hundreds of individual reef systems housing up to 25 percent of the total marine life. It includes marine life such as sponges, algae, fishes, various invertebrates etc. It is home to hundreds of beautiful types of corals. The largest reef in the marine habitat is the Great Barrier Reef which is found Australia, covering about 2,400 km.
The coral reef ecosystem hosts more biodiversity than any other ecosystem in the oceans. Despite making up only 1 percent of the marine habitat, coral reefs harbor about one-third of the world's marine fish species. They are vital to maintaining biological diversity and environmental balance in the marine world.
Explanation:The system that hosts more biodiversity than any other ecosystem in the oceans is the coral reef ecosystem, found in shallow ocean waters. Coral reefs are home to a tremendous variety of life and are considered underwater rainforests due to their rich biodiversity. While the deep ocean water and deep ocean surface ecosystems are also vital, supporting large numbers of plankton and krill, coral reefs surpass them in terms of biodiversity.
Coral reefs harbor about one-third of the world's marine fish species, approximately 4,000 species, despite making up only 1 percent of marine habitat. They are also crucial for aquaria, with most marine aquaria stocked with wild-caught organisms from coral reefs. While other ecosystems such as deep ocean water and deep ocean surfaces ecosystems are important for aerobic respirators around the world, coral reefs still hold the highest biodiversity in the ocean.
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When the diaphragm and external intercostal muscles contract, it
Answer:
The correct answer is: lets the air get inside the lungs.
Explanation:
The process of ventilation, or breathing, consists of two parts: inhaling and exhaling.
Inhaling is the name of the process that is responsible for the air entering the body by the respiratory tract. Exhaling is the opposite, it lets the air out. Both are equally important since they allow the gas exchange necessary for the oxygenation of the blood.
When inhaling, the diaphragm and the external intercostal muscles contract. This pulls the ribcage upwards and outwards, which increases lung volume while decreasing the air pressure inside.
Answer:
These are the mechanism of inspiration which increases the capacity of the thoracic cavity, for maximum volume of air to be inhaled during inspiration.
The contraction makes the diaphragm to move towards the abdominal cavity inferiorily creating the space for the distention of lungs during filling with air. When the external inter coastal muscles contracts, the rib cage is pushed upwards and outwards with the sternum remain fixed. This causes expansion of the rib-cage, with further widening of the thoracic cavity for maximum lung capacity.
Explanation:
Which statement best describes the function of the
heart?
O A. The heart oxygenates the blood
OB. The heart produces red blood cells
O C.
The heart circulates the blood
OD.
The heart filters toxins from the blood
Answer:
the heart oxygenates the blood
Explanation:
if the parents have ab and o blood type what type is the childs?
Answer:
parents with AB and O blood types can either have children with blood type A or blood type B. These two types are definitely different than parents' blood types!
hope i helped. if i can get brainliest that would be great
Answer:
Type A or B (only 2 highly possible blood types according to google lol)
How is blood pressure measured?
systolic - at rest
systolic - heart relaxed
systolic - heart pumping
diastolic - exercising
diastolic - heart relaxed
diastolic - heart pumping
Answer:
systolic - pumping, diastolic - relaxed
Explanation:
the period of contraction is called systole, and the period of relaxation is diastole. when measured, your systolic pressure is when the heart is pumping, and diastolic is in between beats when the heart relaxes. hope this helps :)
PLZ HELP ME I WILL MARK YOU AS BRAINLIEST
write a write a paragraph (3-5 sentences) that explains how and/or why the skull got its name and what language it comes from (like Latin, Greek, etc.) The scientific word for this is called etymology.
Answer:
Middle English scolle ; of unknown origin; compare with Old Norse skoltr . Skull came from both Greek and Roman but I'm pretty sure it originated from Greeks. The word skull is derived from the Middle English word skolle, which in turn is probably a form of the Old Norse word skalli, which means a bald head.
Explanation:
Distinguishing between Rotation
Explain the difference between rotation and revolution.
Then use these terms to explain how Earth, the moon,
and the Sun move relative to one another.
Answer:
For example, put a table in the middle of your room and spin around while going in a circle around the table going round the table is revolution spinning around by yourself without going around something is rotation. Another example is the Earth revolves around the sun while rotting on it's axis and the Moon revolves around the Earth. Just like the saying the world doesn't revolve around you. It means that the world isn't based off you. :) Hope this helped.
Explanation:
Brainliest
_________ are a variety of genes that have the potential to subvert the cell's own activities and push it to the malignant state. They encode proteins that have various functions in a cell's normal activities and can be converted to ________.
Answer:
The preferable options for the fill in the blanks will be -
Proto-oncogenes, oncogenes
Explanation:
Proto-oncogenes are a variety of genes that have the potential to subvert the cell's own activities and push it to the malignant state. They encode proteins that have various functions in a cell's normal activities and can be converted to oncogenes.
A proto-oncogene is a normal gene that becomes an oncogene when it is altered by mutation. Oncogenes causes cancer. Some Proto-oncogenes give signals during cell division. Other proto-oncogenes regulate apoptosis (programmed cell death).HELPPPPPP PLEASEEEEEEEEE!!!!! ASAP!!!!
Answer:
2nd one
Explanation:
The alpha bonds of carbohydrates are broken down during digestion by specific enzymes. Lactose contains a beta bond, which is digestible by lactase. Most carbohydrates that contain beta-glycosidic bonds are not digestible because humans lack the enzyme needed to break down the bond. Which of the following carbohydrates contain alpha bonds that are digestible by humans? a) pectin and stachyoseb) cellulose and hemicellulosec) amylose and amylopectind) raffinose and beta-glucan
Answer:
Amylose and Amylopectin contain alpha bonds therefore, CAN BE DIGESTABLE BY HUMANS.
NOTE:
It isn't much detailed because those are options and they have to be chosen I have just given the answer and not a fully detailed paragraph on it.
Heart disease, diabetes, cancer, alcoholism, and many mental illnesses can best be described as __________. answer correct the results of an unhealthy lifestyle simple mendelian disorders multifactorial disorders with a possible polygenic component the symptoms of huntington's disease infectious diseases caused by microorganisms
Answer:
The preferable option for fill in the blanks will be-
Multifactorial disorders with a possible polygenic component
Explanation:
Heart disease, diabetes, cancer, alcoholism, and many mental illnesses can best be described as multifactorial disorders with a possible polygenic component.
The complex or multifactorial disorders are common medical problems like heart disease, type 2 diabetes, and obesity. These disorders do not have a single genetic problem because they are associated with the effects of multiple genes (polygenic). The polygenic effect combines with our lifestyle and environmental factors.Kendra often has her hair in her hands and pulls at it. When she is nervous, she tends to pull some of it out, which helps her feel better. Most of the time she does not even realize she is doing this. Which diagnosis would Kendra likely receive?
True / False.
Answer:
The correct answer is trichotillomania.
Explanation:
A hair-pulling disorder also termed as trichotillomania refers to a mental condition that comes under Obsessive-Compulsive and associated disorders. The person suffering from the condition has an irresistible desire to pull hair from different parts of the body like eyebrows, scalp, and eyelids.
The condition results in partial or complete removal of the eyelashes and eyebrows, while if one pulls hair from the scalp it can lead to different degrees of hair loss patches. The condition often interferes with the occupational and social functioning of the individual.
What shows a brain structure correctly paired with one of its primary functions?
Answer:
What shows a brain structure correctly paired with one of its primary functions? frontal lobedecision making
Explanation:
Frontal lobedecision making shows a brain structure correctly paired with one of its primary functions. Frontal lobes and limbic system are involved in he establishment and expression of emotions. Temporal and frontal lobes, for example, are the part of the brain actively involved in writing activities. Short-term memory information processing usually causes changes in the hippocampus.
Answer:
Possible options:
A) frontal lobedecision making
B) occipital lobecontrol of skeletal muscles
C) temporal lobevisual processing
D) cerebellumlanguage comprehension
E) occipital lobespeech production
Answer is A) frontal lobedecision making
Explanation:
The frontal lobes are involved in motor function, problem solving, spontaneity, memory, language, initiation, judgment, impulse control, and social and sexual behavior.
Mucous membranes are quite thin and fragile. How can such delicate tissue provide defense against microbial invaders?
The mucus is a physical trap that contains a variety of antimicrobial chemicals.
The mucus contains a variety of antimicrobial chemicals and molecules.
The mucus secreted by the mucous membrane physically traps microbes.
Both the mucus and the outer layer of cells are shed frequently.
The mucus physically traps microbes, contains a variety of antimicrobial chemicals, and is shed constantly, along with the outermost layer of cells.
Answer:
The mucus physically traps microbes, contains a variety of antimicrobial chemicals, and is shed constantly, along with the outermost layer of cells.xplanation:
In which kind of solution is the concentration of solutes the same inside and outside of the cell?
-isotonic
-hypertonic
-hypotonic
-concentrated
Answer:
Isotonic
Explanation:
Hope this helps!!!
Isotonic solutions is one in which the concentration of solutes the same inside and outside of the cell.
What are solutions?Solutions are substances which are made by dissolving a solute in a solvent.
Types of solutions based on solute strength are:
hypotonic solution isotonic solution andhypertonic solutionsIsotonic solutions is one in which the concentration of solutes the same inside and outside of the cell.
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A steady increase in global temperature has been recorded between 1900 and today. Before concluding that this rise in temperature is the result of the increased burning of fossil fuels, which of the following questions would have to be answered?
A. What is the CO2 content in one metric ton of fossil fuels?B. Which gases are released when burning fossil fuels?C. What, if any, temperature rise was occurring prior to 1900?D. How have humans adapted to temperature change?
Answer:
What, if any, temperature rise was occurring prior to 1900?
Explanation:
Before concluding that that rise in temperature is the result of burning of fossil fuel, they would have check what temperature rise occurring prior to 1900 and check if there is any temperature rise prior to 1900.
A habitat contains all of the abiotic and
biotic factors an organism needs to live.
Agree or
Disagree
Answer:
Agree
Explanation:
The biotic factors of an ecosystem include all the populations in a habitat, such as all the species of plants, animals, and fungi, as well as all the micro-organisms. Also recall that the nonliving factors are called abiotic factors. Abiotic factors include temperature, water, soil, and air.
6. Feather length in a species of birds is controlled by
one gene. The L allele is for long feathers, while the
I allele is for short feathers. Write the 3 possible
genotypes found in this species of birds. Next to
each genotype, write the resulting phenotype.
rate co
Genotype
Phenotype
b.
Answer:
LL - long feathers; Ll - long feathers; ll - short feathers
Explanation:
Answer:
The world is so wired am I right
Explanation:
Train-moves I’m done wit jed
Match the following terms to their proper description:
middle ear, eardrum, inner ear, and the organ of Corti.
1. Contains fluid-filled channels set into the bones of the skull:
2. The organ of hearing:
3. Contains the hammer, anvil and stirrup:
4. Separates the outer ear from the middle ear:
The inner ear contains fluid-filled channels, the organ of Corti is the organ of hearing within the cochlea, the middle ear includes the ossicles (hammer, anvil, stirrup), and the eardrum separates the outer ear from the middle ear.
Explanation:The inner ear contains fluid-filled channels set into the bones of the skull. This region is crucial for both hearing and balance, encompassing the semi-circular canals and the cochlea.
The organ of Corti is the organ of hearing, situated within the cochlea of the inner ear. It contains hair cells that function as sensory receptors for auditory signals.
The middle ear contains the hammer, anvil, and stirrup (malleus, incus, and stapes respectively) which are the ossicles responsible for transmitting sound vibrations to the inner ear.
The eardrum or tympanic membrane is the structure that separates the outer ear from the middle ear, and it vibrates in response to sound waves.
Inner earOrgan of CortiMiddle earEardrumwhat’s gene frequency in biology?
Answer:
Frequency, or gene frequency, is the relative frequency of an allele
Explanation:
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The main source of energy for wind and ocean currents on Earth is
Answer:
the moons gravity
Explanation:
The body’s most extensive serous membrane is the ___________. Connecting its visceral and parietal layers is a double serous sheet called __________, which provides a route for blood vessels, lymphatics, and nerves. Organs behind the parietal layers are called ___________; those within this area are called ___________.
Answer:
peritoneum
mesentery
retroperitoneal
intraperitoneal
Explanation:
what’s climate change
Answer:
Climate change is, "a change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels."