Answer:
c
Explanation:
it moves with the concentration gradient and it is the movement of water. It is a passive transport and it requires no energy.
A
B
Nucleus
The nucleus is almost like a mini cell within the
cell. It even has a membrane similar to the cell
membrane called the nuclear envelope.
What is the function of the
nuclear envelope?
Performing photosynthesis
Regulating movement in and out of the nucleus
Answer:
The nuclear envelope is responsible for regulating movement in and out of the nucleus. It is a double membrane that surrounds the nucleus and controls what goes in and out.
Explanation:
Give me Brainliest if that helped! :)
How do mass extinction events influence subsequent species composition and diversity?.
Mass extinction events influence subsequent species composition and diversity by reducing competition among surviving organisms.
What caused the most extinction-level change?Around 252 million years ago, the end of the Permian epoch was marked by the greatest extinction in Earth's history. Our world was home to a variety of flora and creatures long before the emergence of dinosaurs, most of which were wiped off by a series of enormous volcanic eruptions in Siberia.How is humanity contributing to the next extinction event?According to the report, this mass extinction is different from others because human activity—changes in land use, temperature, pollution, hunting, fishing, and poaching—is the sole reason. Both on land and in the oceans, the absence of these powerful predators has had an impact.
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A cell containing a certain concentration of salt is placed in a solution. the cell neither shrinks nor swells. therefore, the solution is said to be:________
A cell with a certain salt concentration is immersed in a solution. The cell does not shrink or swell. The solution is thus said to be isotonic to the cell.
What exactly is an isotonic cell?A cell in an isotonic solution is in harmony with its surroundings, which means that the concentrations of solutes within and outside are comparable (iso means equal in Latin). Because there is no concentration gradient in this state, hence there is no substantial movement of water in or out.
What exactly are hypotonic cells?A solution outside a cell is said to be hypotonic if it contains a lower solute concentration than the cytoplasm. Water diffuses into cell as a result of osmotic pressure, and the cell frequently appears turgid, meaning bloated.
What is the distinction between isotonic, hypotonic, and hypertonic fluids?Hypotonic fluid has less fluid, carbohydrates, plus salt than blood. Hypertonic fluid contains more fluid, carbohydrates, and salt then blood. Isotonic fluid, carbohydrates, and salt concentrations are similar in blood.
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Please write in 4 full sentences listing 2 similarities of prokaryotic and eukaryotic cells. write the 3 differences between prokaryotic and eukaryotic cells.
Answer:
A similarity is that they both have cytoplasm. Another similarity is that they both contain ribosomes. A difference is that prokaryotes have no nucleus. Finally, 2 differencea are that prokaryotes have a plasmid loop and the prokaryotes contain no mitochondria.
Why are thick or dense smears less likely to provide a good smear preparation for microscopic.
Thick or dense smears less likely to provide a good smear preparation for microscopic because it will diminish the amount of light that can pass through making it difficult to visualize the morphology of single cells under the microscope. Some times the stain can't penetrate all of the bacteria.
What is a microscopic smear?A smear is a microscopic specimen.A swab or loop, or the edge of another slide, is used to spread the sample to be examined, such as blood or microbial culture, thinly and unevenly across the slide.Smear preparation involves spreading a small amount of sample on a slide and air drying the film before staining and microscopy.The conventional method, blood film method, drop and rest method, and water-wash method are the four types of smearing methods.Smear microscopy entails collecting a biological sample (typically sputum or other clinical material), fixing it thinly on a glass slide, and staining it with a dye that binds specifically to mycobacteria (making them easier to identify under a microscope).To learn more about microscopic smear :
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Sort the following substances based upon their ability to diffuse across a typical dialysis membrane.
According to the given statement the following substances based upon their ability to diffuse across a typical dialysis membrane are Permeable>Water>Ion>Glucose Impermeable>Glycogen>Protein.
What material makes up the membrane?Cell membranes of living things are composed of proteins and lipids. They are mostly made of lipids, therefore only select substances can pass through them. Phospholipid is the most frequent type of lipid in the membrane. Two layers make up the phospholipids' outer and inner surfaces.
What function does a membrane ?As a result, the cell membrane has two functions: first, it acts as a barrier to keep the cell's components in and undesirable materials out, and second, it acts as a gate to allow the entry of essential nutrients and the exit of waste products.
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Organisms that consume only plants are any/all of the following:_____.
a. first order heterotroph
b. secondary consumer
c. primary consumer
d. second order heterotroph
e. producer
f. herbivore
Answer:
I think herbivores and primary consumers
In your own words, explain what an ecological relationship is
1. How does the endosymbiotic theory support the claim that life today could have
originated from a single cell?
On the first graph, which label is on the x-axis?
A. Glucose
B. Meals
C. Blood Glucose
D. Time
Answer: I'm pretty sure its c
Explanation:
The Perennial Pepperweed was first introduced in Las Vegas during the 19th century. This weed damages the soil and makes it impossible for other plants to grow around it. It has been continuing to spread in southern Nevada and threatens many organisms in the area. The Perennial pepperweed is an example of:
(A) An endangered species.
(B) An invasive species.
(C) An abiotic factor.
(D) A non-living factor.
Perennial pepperweed is an invasive species, as shown in option B.
How to define an invasive species?Organisms that originated in one area and spread to other areas.Organisms that cause problems in the area where they invaded.Organisms compete with local species for the same natural resources.We can determine that the Perennial pepperweed is an invasive species because despite having been created in Las Vegas in the 19th century, it is invading other areas, mainly in southern Nevada, where it causes problems for local plants.
This is because the Perennial pepperweed takes over the soil, damaging it and preventing other species from growing.
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Two forms of energy capture are?
When you get a scratch, the cells in your body will multiply until?
When you get a scratch, the cells in your body will multiply until they reach the cells gathering at the other side of the wound.
What is a wound?A wound is a cut that occurs on the body. When the scratch or the wound occurs, the skin cells that are around that area are destroyed. When this occurs, the person would feel pain as the blood vessels in that area become affected and the individual begins to bleed. The bleeding that the individual experiences is in proportion to the extent of the wound that the individual has.
Having said this, we know that the cells are affected when there is a scratch on the body. The scratch depends on the impact of the object that caused the injury in the body.
Immediately the scratch occurs, the cells that are around the affected area begins to multiply. The multiplication of the cells is in order to cover the area and cause the wound to heal.
Thus, when you get a scratch, the cells in your body will multiply until they reach the cells gathering at the other side of the wound.
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The tissue that always has a free surface exposed to the internal or external environment is:________
The tissue that always has a free surface exposed to the internal or external environment is epithelia.
A group of cells that perform similar functions and have a similar structure can be referred to as a tissue. Tissues are of four types- epithelial, connective, muscle, and nervous tissue. Epithelial tissue acts as a protective sheath, connective tissue joins other tissues and keeps them in place, muscle tissues help in voluntary and involuntary movements, and nerve tissues carry signals to and from various parts of the body. Epithelial tissue are remain exposed to the internal or external environment as they protect the interior of the tissues from the damage caused by such environments.
The epithelium is an animal tissue that covers the surface of organs, blood vessels, and cavities of the internal organs. It covers the body surfaces that are exposed to the external environment and lines the body cavities exposed to the internal environment.
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Assuming that individuals with cystic fibrosis never survive to reproduce, what is the expected frequency of the cystic fibrosis allele at the equilibrium between mutation and selection?
However, an allele's frequency within a population can vary greatly. For instance, Caucasians have an allele frequency of 0.025 for the mutant cystic fibrosis allele and 0.975 for the normal allele. This has an impact on how alleles are distributed across a population as a whole.
What is cystic fibrosis ?A fatal hereditary condition that harms the lungs and digestive system.
The cells that make mucus, perspiration, and digestive fluids are impacted by cystic fibrosis. These fluids start to thicken and cling together as a result. They then block off the passages, ducts, and tubes.
Cystic fibrosis is brought on by a mutation in the CFTR gene (cystic fibrosis transmembrane conductance regulator). This gene regulates the movement of fluids and salt into and out of your cells.Learn more about Cystic fibrosis here:
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When forming a guess, you are forming a _______________________.
*Hypothesis
When forming a guess, you are forming a hypothesis and is a type of scientific methods which are used in science.
What is Hypothesis?This is referred to as the proposed explanation for a particular phenomenon and is classified under scientific method which are used by scientists. It usually comes after observation by an individual and the plural is referred to as hypotheses.
Examples of scientific methods include the following:
ObservationHypothesisExperimentationConclusion etc.Hypothesis is an educated guess about something and undergoes various types pf scrutiny so as to ascertain its authenticity. Different scientists replicate and test it and if proven true it is referred to as a theory and if not, it is usually discarded or modified to fit the exact finding.
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The patient is found to have liver disease, resulting in the removal of a lobe of his liver. adaptation to the reduced size of the liver leads to ___________ of the remaining liver cells.
The adaptation to the reduced size of the liver leads to (C) compensatory hyperplasia of the remaining liver cells since the patient is found to have liver disease, resulting in the removal of a lobe of his liver.
According to the medical definition of hyperplasia, this is a particular kind of biological reaction to stress. It involves a rise in cell division, which leads to an increase in the number of cells. Organs get significantly larger as a result of cell hyperplasia.
Compensatory Hyperplasia is the proliferation of cells while they retain their differentiated form and function, and it is a hyperplasia that develops in reaction to change that occurs in the body. Hepatocyte regeneration in a damaged liver is a famous illustration. The result in the adaptation to the reduced size of the liver is Compensatory Hyperplasia.
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Question correction:
The patient is found to have liver disease, resulting in the removal of a lobe of his liver. Adaptation to the reduced size of the liver leads to ___________ of the remaining liver cells.
A) metaplasia
B) organ atrophy
C) compensatory hyperplasia
D) physiologic hypertrophy
a
4
Magnesium is an alkaline earth metal with an atomic number of 12 Its in the third row in the periodic table. Which expression shows one way to find the number of
valence electrons in one atom of magnesium?
A. 12x3
B. 12 divided by 3
C. (12-8)-2
D. (12-2)+8
E. (12+2)-8
A. 12×3
Explanation:
I think
Magnesium atomic number-12
third row - 3
valence electrons in one atom of magnesium-12×3=36
Record the growth of the organisms when the water temperature averages 30°?
Answer:28496371.
Explanation:
diagram of a plant cell, what is the name of structure 2?
Excuse me but where is the picture you want me to answer???
Please indicate a picture of the diagram to answer it.
Why does sexual dimorphism exist in so many species? give a creationist answer and an evolutionary answer.
Yes, sexual dimorphism exist in so many species.
Evolutionary reason is that Divergent traits may be adaptive for the two sexes for ecological reasons, as when males and females eat different foods. An intrinsic reason for dimorphism is that both males and females have different reproductive roles.
Creationist reason- God created us with two different sexes (Creation story) with different structures
Sexual dimorphism is the difference between the males and females in a species. The difference between males and females of the same species in size of bones and musculature and for comparison we use skull and pelvis, more if available.
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What portion of the nervous system both delivers commands to the muscles directing voluntary movement and communicates information back to the central nervous system?.
Somatic nerves deliver commands to the muscles directing voluntary movement and communicating information back to the central nervous system.
The somatic nervous system is the part of the peripheral nervous system that is associated with the voluntary movements of the body.
It involves the nerves that go into muscles and skin and control the conscious movements of our body.
The somatic nerves enable to control and movement of the muscles throughout the body.
It feeds information related to our senses such as sound, taste, touch, and smell, back to the central nervous system.
Our sense of touch also uses somatic nerves to send information back to the central nervous system.
Only sight sense is the exception because the optic nerve cells are directly connected with the brain.
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Which keyboard shortcut is used to move the cursor one cell to the right of the insertion point? tab shift tab down arrow shift left arrow
Answer:
To move to the next cell to the right, Press "TAB" To move to the next cell to the left, press SHIFT + TAB. To move to the edge of a data region, press CONTROL + Arrow Keys. To move to the first cell in the row, press HOME.Answer: Tab
Explanation:
• Which of the following statements regarding the energy produced during cellular
respiration is most accurate?
b. The energy must be transferred across the cell membrane to be used.
C.
The energy produced must tle stored in specialized organelles within the cell.
The amount of energy produced is greater than the amount of energy required.
Answer:
I think it is b because when energy is produced, it is taken to cells. hope is Right
Do 1-3 please ty and do it quickly so I can turn this in
HELP ASP ILL GIVE BRAINILEST TO WHOEVER IS RIGHT AND 17 points
Bohr model and electron cloud model describes the position of electrons in an atom. Bohr model was given by Niels Bohr and electron cloud model was given by Erwin Schrödinger.
What are the similarities and dissimilarities between Bohr Model and Electron Cloud Model?Similarities: The basic idea of movement of electrons in a specific path is common in both the models without emitting energy.
Both the models shows that electrons have energy which depends upon quantum numbers.
Dissimilarities: The Bohr Model describes the particle-nature of electron while the electron cloud model describes the wave-nature of electron.
Bohr model tells about the specific path of an electron whereas the electron cloud model tells about the regions where the probability of finding an electron is highest.
Thus, the models explains about the stability of an atom with respect to the energy of an electron.
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Found throughout the nervous system, __________ aid and support the function of neurons. a. neurotransmitters b. somas c. glia d. reuptakes please select the best answer from the choices provided a b c d
Answer:
C: glia
Explanation:
I got it right on edge
Functions of neurons supported by glial cells, which provide support and also help increase action potential, hence option c is correct.
What are glial cells?Neurons are the basic functional units of the nervous system, and they create electrical impulses referred to as action potentials, which allow them to transmit data swiftly over large distances.
Glia is also essential for nervous system function, although they primarily serve to support neurons. Despite the complex nature of the nervous system, the nervous system consists of only two main types of nerve cells: neurons and glial cells.
Glial cells clearly provide "support" both for cells such as neurons and structures such as blood vessels, they can also function to increase action potential conduction.
Therefore glia provides support to the function of neurons and helps to generate an action potential, hence option c is correct.
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What is another explanation for how bacteria could be showing up on the stomach biopsy slides?
The bacteria could be showing up on the stomach biopsy slides.
First the tissue sample is removed during the experiment called upper endoscopy. The whole experiment was done with a flexible tube and with a small camera at the end.The scope is inserted down the throat into the stomach.bacteria is a single celled organisms (unicellular) that are prokaryotes.Archaebacteria and Eubacteria comes under kingdom of bacteria Archaebacteria are ancient bacteria, lives in extreme environments (hot springs, very salty environments, can live without oxygen, some found in intestines of animals)Eubacteria Can be found nearly everywhere, live on and in your body. Some are autotrophs that help add oxygen to the atmosphere.To know more about bacteria visit : https://brainly.com/question/8008968
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Using Anthony's symptoms and initial lab results, describe how you diagnosed that the problem was kidney failure.
We were able to diagnose that Anthony's problem was kidney failure because through symptoms experienced which includes:
decreased urine output , swelling in the legs, ankles or feet, shortness of breath, fatigue, confusion, Nausea and WeaknessWhat is kidney failure?Kidney failure can be described as a condition in which the kidneys lose the ability to remove waste and balance fluids.
Certain factors contribute to kidney failures and they include:
certain acute and chronic diseasestoxic exposure to environmental pollutants or certain medicationssevere dehydrationinsufficient blood flow to the kidneysFrom Anthony's symptoms and initial lab results, we described the main symptom as the swelling in legs, ankles or feet.
The treatment goal of Kidney failure is to use Hemodialysis to filter waste products and water from your blood.
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Using Anthony's symptoms and initial lab results, kidney failure would be diagnosed through thew following below:
Decreased urine output.Swelling in the legs etc.What is Kidney?This is referred to the pair of organs which are present in the abdominal region of the body and their main function is in the removal of waste and excess fluid in the body and plays a major role in the homeostatic processes of the body.
In the incidence of the kidney having a problem, the urine output is usually reduced which leads to the build up of the fluids in parts of the body such as the legs.
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Give THREE reasons that might have influenced authorities in the Department to use a higher percentage of Nguni cattle breeds
Three reasons to use higher percentage of Nguni cattle breeds-
Parasite ResistantThey are heat and light tolerant.High reproduction rateNguni cattle can withstand both extremes of heat and cold since they are light and heat tolerant. They have good resistance to internal and external parasites as well as built-in immunity to diseases transmitted by ticks. They are versatile and robust. Cows will produce 10 or more calves because of their early maturity, fertility, ease of calving, and longevity. The cows wean calves who weigh 45–50% of their body mass with remarkable efficiency. Calves grow at a rate of about 0.70 kg per day until weaning, when their average birth weight is 22.5 kg and they wean at a weight of about 175 kg.
Due to their low birth mass, small uterus, and sloping rumps, Nguni cattle are less prone to dystocia.
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