The value that stays the same as long as there are no signals in the neuron is known as resting potential.
Neurons are the nerve cells. These are the longest cell in the human body. The structure of a neuron comprises of a cell body from which arise the various branch-like extensions called the dendrites. From one end emerges the axon that ends at the axon terminal.
Resting potential is the potential difference of ions across the plasma membrane when the cell is resting and no nerve impulse is being conducted. The value of resting potential is approximately -70 mV in majority of the neurons.
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Amphipathic phospholipids arrange themselves into a(n) ______ to form the plasma membrane multiple choice question.
Amphipathic phospholipids arrange themselves into a bilayer to form the plasma membrane
Amphipathic refers to holding property of both water affinity and it's phobia. Thus, amphipathic compound will have structure suitable for both. Same is the condition with lipids. Lipids have hydrophobic tail that are made up of fatty acids. They also have hydrophilic head which is phosphate group. It is polar in nature and hence easily interacts with water.
The two layers of lipid come together to form plasma membrane. Here, the hydrophilic head remains outside while the hydrophilic tails remain inside the bilayer. Both phosphate and fatty acids are attached to glycerol. Other carbohydrates may attach to lipids forming glycolipids, which play different significant roles in functioning of cell.
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Which four of the following entities are generally included in the field of microbiology? multiple select question. yeasts animals prions plants bacteria viruses
Yeasts, bacteria, viruses are generally included in the field of microbiology
The study of various living things that are not visible to the eye, such as bacteria, fungi, and other tiny organisms, is known as microbiology. Despite being little, these organisms are the foundation of all life on earth.
Famous microbiologists like Jenner, who developed a vaccine against smallpox, Fleming, who discovered penicillin, who discovered a connection between Helicobacter infection and stomach ulcers, and zur Hausen, who discovered a connection between the papilloma virus and cervical cancer, have made some of the most significant discoveries that have supported modern society.
Maintaining food, water, and energy security for a healthy people on a habitable earth is only one of the many present global objectives and concerns that microbiology research has been and continues to be crucial in addressing.
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A function of the large intestine is to absorb:_________
a) vitamins and minerals
b) fats and proteins
c) water and minerals
d) proteins and carbohydrates
6. What is the density of a cube of water measuring 2cmX4cmX1cm, with a mass of
8g?
Plsss helpppp fasttt
Answer:
1 g/cm³
Explanation:
To find density we need to know the mass and the volume. We already know that the mass is 8 g. Now we need to know the volume using the dimensions above, so all we need to do is
2cmX4cmX1cm to give us 8cm³
Now that we know both the mass and the volume all we have to is to divide the mass(8g) by the volume(8cm³) to give us 1g/cm³(which btw is almost always the constant density of water)
What are the two MAJOR types
PROKARYOTIC cells?
of
A. plant and animal
B. plants and animals
C. archaea and bacteria
Answer:
C. Bacteria and archaea
Explanation:
Bacteria and archaea are the two types of prokaryotes.
One of the primary functions of sebum is: ________
a. protection against infection
b. hair growth
c. tissue repair
d. scar development
e. excoriation
One of the primary functions of sebum is : protection against infection.
Sebum is an oily substance that the sebaceous glands produce. It combines with lipid molecules, which are fat molecules, to create a protective layer on the skin's surface. These lipids aid in hydrating the skin and shielding it from pathogens like bacteria and fungi that could be harmful.
Sebum helps in providing infection protection in the following ways:
90% of the lipids, or fat molecules, on the skin's surface are contributed by sebum. These lipids keep the skin moist and shield it from UV rays and other irritants.Fat-soluble antioxidants, like vitamin E, are also transported to the surface of the skin by the sebum. By taking this action, skin oxidative damage might be avoided.Atopic dermatitis and staph infections are both brought on by the Staphylococcus aureus bacteria, which is also fought off by sapienic acid and other fatty acids in sebum.Squalene and many of the fatty acids found in sebum, as well as other sebum constituents, have anti-inflammatory properties.Find more on Sebum at : brainly.com/question/10723558
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Pathologic anatomy examines all anatomic changes resulting from _____________.
Pathologic anatomy examines all anatomic changes resulting from disease
Disease is the condition of the body when normal conditions are absent that is hindering the normal functioning of the body.
Anatomy is the field of biological sciences that are concerned with internal structures of the living organisms. It is divided into many branches- microscopic anatomy, human anatomy, embryology, comparative anatomy, phytotomy, zootomy, etc.
Pathologic anatomy is a branch of anatomy that deals with the examination of the diseases based on macroscopic as well as microscopic examination of the cells and the tissues.
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Any enzyme that adds an inorganic phosphate (pi) group to another organic molecule is known as a(n):_________
The enzyme phosphokinase (PK), also known as creatine kinase (CK), aids in controlling the amount of adenosine triphosphate (ATP) in a cell.
What is inorganic phosphate (pi) ?When in equilibrium with water, the unstable molecule ATP hydrolyzes to form ADP and inorganic phosphate. The two high-energy phosphate bonds in this molecule are what give it its high energy.
Phosphodiester bonds are the name for the bonds that bind phosphate molecules together.
Pi, an inorganic phosphate, is a crucial ingredient for all living things. It is essential for several biological processes, such as bone mineralization and osteoblast differentiation.
Low phosphate/phosphorus levels could indicate that you: When you have hyperparathyroidism, your parathyroid gland overproduces parathyroid hormone.
Therefore, phosphokinase (PK) adds an inorganic phosphate (pi) group to another organic molecule.
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Cilia are found in certain:__.
a. protozoa.
b. algae.
c. fungi.
d. bacteria.
e. all of these choices are correct.
Cilia are found in certain a. protozoa.
In the field of biology, cilia can be described as thread-like projections which are membrane-bound, found in mammals and various microorganisms referred to as ciliates.
Protozoa are eukaryotic organisms that are single-celled. The protozoa can either live freely or choose a parasite to live in.
Cilia are present in certain protozoa in order to help the protozoa in movement. The cilia also help the protozoa in gathering food for nutrition. The cilia also make it possible for protozoa to attach to a surface. Sensations in a protozoa can also be generated through cilia.
The cilia cover the entire surface of the protozoa cell.
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Creating a formula by _____ to the specific cells that are to be part of the formula is more accurate than typing the cell references.
Creating a formula by pointing to the specific cells that are to be part of the formula is more accurate than typing the cell references.
This is further explained below.
What are cell references?Generally, When working with Excel, you may refer to the value of a separate cell or cell range on the same worksheet or on a different worksheet inside the same spreadsheet by using something called a cell reference.
In a formula, a cell reference may stand in for a variable if the need arises.
In conclusion, Rather than manually putting in the cell references, it is more accurate to create a formula by pointing to the individual cells that need to be included in the formula.
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Phagocytosisthe ribosomal rna studies that led to the division of prokaryotic organisms into the bacteria and the archaea were begun by?
The ribosomal RNA studies that led to the division of prokaryotic organisms into the bacteria and the archaea were begun by Woese.
Ribosomal RNA makes the maximum portion of RNA in the cells. However, it is not translated into proteins. But it plays a major role in the translation of m-RNA. They are responsible for deducing the order of the amino acid sequence and linking the amino acids together to form the polypeptide.
Archaea are a group of organisms that are similar to bacteria, yet have evolutionary differences. They are found in extreme locations like hot spring, salty water bodies, or areas where methane if formed. Therefore, they are also known as extremophiles.
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1. cats are the only host in which toxoplasma can sexually reproduce. therefore, cats are the _______ host for this protozoan.
Cats are the primary/definitive host for this protozoan.
There are different types of interactions between two species like mutualism, predation, parasitism, commensalism, etc.
Parasites are the organisms that live in/on another organism (host) and derive benefits like food and shelter from it.
The parasites usually harm the host, in some cases even causing their death.
Most of the parasites are species-specific. They can survive only inside the host of a particular species.
But some parasites require more than one host to complete their life cycle. Usually, in such cases, they reproduce asexually in one host and sexually in the other host/hosts.
The host in which they reproduce sexually is known as the primary/definitive host and the host in which they reproduce asexually is known as the secondary/intermediate host.
As the cats are the only host in which toxoplasma can sexually reproduce, therefore, cats are the primary/definitive host for this protozoan.
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The majority of the plasma membrane can be described as a bilayer of with associated proteins.
The majority of the plasma membrane can be described as a bilayer of Phospholipids with associated proteins.
What is the plasma membrane?It is a double layer of phospholipids and proteins, which perform functions of connection, transport and catalysis, which covers and delimits the cells, serving as a border between the inside and the outside of it.
In this sense, one of the peculiarities of phospholipids is that they are amphipathic, their molecules have a part that is soluble in water (that is, hydrophilic) and another that is not (hydrophobic), these lipids are primarily cholesterol, phosphoglycerides and sphingolipids.
Therefore, we can conclude that according to the research, the correct option is phospholipids. The majority of the plasma membrane can be described as a bilayer of phospholipids with associated proteins.
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Why other species of shellfish that existed around the same period of time are not considered index fossils
Other shellfish were not as widespread as ammonites.
What is shellfish?Crustaceans and mollusks are marine animals that fall under the category of shellfish. Examples include snails, shrimp, crabs, lobster, squid, oysters, and crabs. An allergy to shellfish is rather frequent. While some persons with shellfish allergies react to all shellfish, others just to specific varieties.
What is the difference between shellfish and fish?Fish and shellfish vary primarily in that fish have bones while shellfish are invertebrates without bones. In order to sustain their survival, they also have organs and means of movement.
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The type of leukocyte that will migrate in the blood and take up residence in the tissues as a macrophage is a(n):__________
The type of leukocyte that will migrate in the blood and take up residence in the tissues as a macrophage is a : monocyte .
Monocytes can be thought of as a subtype of leukocyte, or white blood cell. They can differentiate into macrophages and typical dendritic cells, making them the largest type of leukocyte in blood. Involved in tissue repair and innately adaptive immune responses in vertebrates.
Leukocytes of the monocyte type enter tissues as macrophages after leaving the bloodstream. And, based on their phenotypic receptors, the monocyte subclasses in human blood are at least three.
Function: The precursors of tissue macrophages that are actively phagocytic are termed as monocytes, which circulate in the blood. For one to three days, monocytes circulate in the blood before migrating into body tissues, where they further develop into macrophages.
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Which organ is super important in helping you in both conserving heat and cooling your off?
A. Skeletal System
B. Excretory System
C. Respiratory System
D. Integumentary (skin) System
Please please help ASAP
a.The rate of photosynthesis can be measured as the volume of oxygen released by a
plant per minute. The number of bubbles of gas released per minute from waterweed is
counted.
The rate of photosynthesis can be measured as the volume of oxygen released by a plant per minute. The number of bubbles of gas released per minute from waterweed is counted. In this experiment the solution used is sodium.
what are the factors affecting photosynthesis ?The process by which autotrophic plant convert light energy into chemical energy, prepare glucose as the food, water and carbon dioxide are the major source and stored as a sugar molecule.
Photosynthesis occur in chloroplasts of leaf surface of the plant which contain the pigments like chlorophyll a, chlorophyll b, carotene and xanthophyll which use sunlight and synthesize nutrients.
several factors influence photosynthesis like increase in light intensity , Higher concentration of carbon dioxide
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Diffusion is the movement of molecules across the cell membrane from __________ to __________ concentration.
Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. For cell transport, diffusion is the movement of small molecules across the cell membrane.
What is Diffusion ?The transfer of particles from a region of higher concentration to one of lower concentration is known as diffusion. The total result equalises focus across the board for the medium.
Passive diffusion is the most basic method for molecules to penetrate the plasma membrane. A molecule simply dissolves in the phospholipid bilayer during passive diffusion, diffuses through it, and then dissolves in the aqueous solution on the opposite side of the membrane.Diffusion is the passage of tiny molecules across the cell membrane during cell transport. The term "concentration gradient" refers to the differential between the two places' molecule concentrations. The molecules' kinetic energy causes random motion, which causes diffusion.Learn more about Diffusion here:
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In addition to proteins, which substance helps maintain bubbles and promote foam?
In addition to proteins, bitter acids helps maintain bubbles and promote foam.
Proteins are the polymers of amino acids. These are long chain of amino acids joined together with the peptide bond, which can further exhibit various levels of structure like secondary, tertiary or even quaternary. The properties of proteins that help in stabilizing the bubbles and foam are: intermolecular forces, conformation and stability.
Bitter acids are the prenylated polyketides. They are produced by the lupulin gland of the hop plant. The examples can be humulone, adhumulone, etc. They are also known to maintain the bubbles and foam stabilization.
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Determine whether the variable is qualitative or quantitative. explain your reasoning. eye color
Qualitative variable because it is an attribute characteristic. The 'eye shadeation of a pupil' is an characteristic of an person and is an instance of qualitative data; the 'numbers of scholars with every eye shadeation' is a variable such as quantitative data.
Eye shadeation is qualitative variable, additionally referred to as a specific variable. The classes aren't ordered. Such a variable is likewise referred to as nominal.The variable is quantitative due to the fact it's miles a numerical measure. A variable which could count on best a countable and normally finite, range of values.
Gender and eye colour are examples of specific variables, due to the fact they region every person right into a class, which include human beings with blue eyes. Categorical variables may be summarized to reveal how regularly every class occurs. Another sort of variable is a numerical variable.
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An iris diaphragm is a set of overlapping metal plates that expand out to allow more light or fold in on each other to reduce the amount of light.
A. true
B. false
It is true that an iris diaphragm is a set of overlapping metal plates that expand out to allow more light or fold in on each other to reduce the amount of light.
What is Iris Diaphragm?Iris Diaphragm is an adjustable diaphragm of thin opaque plates that can change the diameter of a central opening usually to regulate the aperture of a lens. It is an adjustable shutter that allows us to adjust the amount of light passing through the condenser.
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An advantageous mutation is more likely to get fixed in a population through genetic drift than is a deleterious mutation. true/ false
False: an advantageous mutation can get fixed in a population through genetic drift than a deleterious mutation.
A mutation is a change in the sequence of DNA of an organism. It can be a result of errors in the replication of DNA during cell division, exposure to mutagens, or any infection.
Genetic drift: The fluctuations in the number of variations in genes of a population are called genetic drift. It takes place when the occurrence of variant forms of a gene, called alleles. Which increases or decreases by chance over time.
Deleterious mutation: An alteration of genetic material that increases an individual's susceptibility to a certain disease or disorder. In this mutation, the protein product of a gene is not produced, and if it is produced it does not function, or if produced it interferes with normal function.
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permeability is a property of permeability is a property of solutes. ions. solvents. proteins. membranes.
Proteins is a property of permeability is a property of solutes. It can be expressed in a variety of ways. A solution's ligative qualities are determined only by the total quantity of dissolved particles in solution, not by their chemical identity. Vapor pressure, boiling point, freezing point, and osmotic pressure are examples of ligative qualities.
We will look at four important colligative properties: vapor pressure depression, boiling point elevation, freezing point depression, and osmotic pressure. These are known as colligative qualities. We will look at four important colligative property: vapor pressure depression, boiling point elevation, freezing point depression, and osmotic pressure.
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What is the most appropriate unit of measurement for macromolecular complexes including ribosomes and microfilaments?
Nanometer is the most appropriate unit of measurement for macromolecular complexes including ribosomes and microfilaments.
One billionth of a meter, or [tex]10^{-9}[/tex] meters, is the size of a nanometer, which is a measure of spatial measurement. It is frequently employed in nanotechnology, which involves creating incredibly small machines. Because it is [tex]\frac{1}{10}[/tex] of a micron (micrometer), the nanometer was previously known as the millimicrometre, or more popularly, the millimicron. It was frequently represented by the symbol m, or (less frequently and confusingly, because it conceptually should represent to a millionth of a micron). The thickness of a typical human hair is 60,000 nanometers. Light wavelengths and the separations across atoms in molecules can both be measured using nanometers.
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Whch of the following describes an organism that lacks linear chromosomes but has peptidoglycan cell walls? multiple choice
A. bacteria
B. eukarya
C. archaea