The cell membrane is also known as a selectively permeable membrane because it allows selective substance to move inside the cell. It also helps in the recognition of certain chemicals.
Further Explanation:
The plasma membrane is the outermost layer of the cell. It forms the boundary between the intracellular and extracellular components. The main components of the plasma membrane are phospholipids, proteins, and carbohydrates. The phospholipids are arranged in a double-layer structure in which the head is present on the outside (water-loving) and the tail part is present inside the cell (water-hating). Proteins are present between phospholipids bilayer. These transmembrane proteins allow the molecules that could not enter the cell directly. The molecules pass by forming the channels, pores or gates. It also plays an important role in cell recognition, signaling and enzymatic activity. Carbohydrates are also present in the membrane, most of its part is found as glycoprotein. It helps in cell adhesion (cell attach to each other).
The functions of the cell membrane are:
1. It acts as a physical barrier: it physically separates the cytoplasm that makes up the cell from the extracellular fluid. It also allows separate activity to occur inside and outside the cell.
2. It allows selective permeability. The certain molecules can through them. Water, oxygen and carbon dioxide can easily move through the membrane. It does not allow ions such as potassium and sodium and other polar molecules to pass through them.
3. It also helps in facilitating the communication and signaling between cells.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Structure ofCell
Keywords:
Cell membrane, selective, permeable, recognition, intracellular, extracellular, phospholipids, protein, carbohydrate, enzymatic, signaling, glycoprotein
Expectations for a herniated lumbar disk include pain and muscle weakness due to spinal nerve compression from the protrusion of the nucleus pulposus after the weakening of the anulus fibrosus.
Expected assessment findings for a herniated lumbar disk include pain and/or muscle weakness in the corresponding body regions supplied by the affected spinal nerve. Specifically, for a lumbar herniation, patients might present with sciatica, characterized by pain radiating from the lower back down the thigh and into the leg. The herniation occurs due to a weakening of the anulus fibrosus, leading to protrusion of the nucleus pulposus and subsequent nerve compression. Lifting a heavy object further increases pressure on the disk, exacerbating the protrusion and potentially increasing pain and dysfunction.
The mineral that is a coenzyme involved in energy metabolism and assists in the synthesis of bone tissue and cartilage is
How do bacterial species build antibiotic resistance
In an interrupted mating experiment, the purpose of plating cells on a selective medium is
Plating cells on a selective medium in an interrupted mating experiment allows for the isolation and study of specific microorganisms by inhibiting the growth of undesirable ones.
Explanation:In an interrupted mating experiment, plating cells on a selective medium has the purpose of allowing only certain microorganisms to grow while inhibiting the growth of others. The selective medium contains specific additives that favor the growth of the desired microorganisms, allowing for their isolation and study. For example, MacConkey agar is a selective medium that inhibits the growth of gram-positive bacteria and promotes the growth of gram-negative bacteria.
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You are reading a scientific article about cheetahs that have stripes down their backs instead of spots. the article refers to this as a genetic mutation. though they have no negative impact on the cheetahs' fitness, why are the stripes nevertheless considered a genetic mutation?
The stripes are as yet considered a genetic mutation because of the way that a cheetah's unmistakable checking is their spots which is a hereditary quality, and having stripes is anomalous for the species.
Further Explanation:
Depiction of a cheetah:
The cheetah is one of the most effortless individuals from the feline family, and one of only a handful couple of feline species which depends on speed rather than stealth when chasing. Cheetahs are in reality the quickest land warm blooded animals on Earth, arriving at velocities of 110-120 km/h.
Genetic mutation:
A genetic mutation is a perpetual adjustment in the DNA arrangement that makes up a quality, with the end goal that the succession varies based on what is found in a great many people. Transformations run in size; they can influence anyplace from a solitary DNA building square (base pair) to a huge section of a chromosome that incorporates various qualities.
Case of genetic mutation:
Some notable acquired genetic issue incorporate cystic fibrosis, sickle cell pallor, Tay Sachs infection, phenylketonuria and visual weakness, among numerous others. These clutters are brought about by the change of a solitary quality. The p53 quality makes a protein that prevents transformed cells from separating.
Subject: biology
Level: High School
Keywords: Depiction of a cheetah, Genetic mutation, Case of genetic mutation.
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Whenever a treatment condition affects a second treatment condition differently than it does when it follows any other treatment conditi?
2 theories together account for color vision. the young-helmholtz theory shows that the eye contains __________, and the hering theory accounts for the nervous system's having ______________.
The ___________ controls vital functions like breathing, heart rate, digestion, and awake/alert arousal.
If a cut on the palm becomes infected the __________ will enlarge
If a cut on the palm becomes infected the tissue will enlarge
what are the types of tissues ?A “tissue” in simple terms is a bunch of similar cells. The human body is basically made of four different types of tissues.
It can be up four types such as Epithelial tissue, Connective tissue Muscular tissue, Nervous tissue.
This epithelial tissue is the uppermost tissue covering all the organs or bodies. It is based on need, is of different types as simple epithelium, squamous epithelium, columnar epithelium, etc.
This epithelial tissue is further classified as Stratified epithelium. Simple epithelium
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How are the scale like parts of hair formed?
From your text, you may recall that there are 20 amino acids. how many of these amino acids would be considered essential to an adult human?
In some cases the epiphyseal plate of the long bones of children closes too early. what might be the cause
Which process occurs only in autotrophic organisms?
Which of these species is not endangered today thanks to successful conservation efforts? bald eagle polar bear Bengal tiger leatherback turtle
Definition: this is the main energy storage and transfer molecule in the cell.
ATP-this is the main energy storage and transfer molecule in the cell
Name the 3 chemical products of the light reactions. which two get passed on to the calvin cycle? which one leaves the leaf?
The light-dependent reactions in photosynthesis produce ATP, NADPH, and oxygen. ATP and NADPH are passed to the Calvin cycle, and oxygen is released from the leaf.
Photosynthesis occurs in two main stages: the light-dependent reactions and the Calvin cycle.
The light-dependent reactions produce three primary chemical products: ATP, NADPH and Oxygen (O₂)Among these, ATP and NADPH are passed on to the Calvin cycle, while oxygen is released as a waste product and leaves the leaf.
The chemical energy stored in ATP and NADPH, produced during the light reactions, is utilized in the Calvin cycle to drive the synthesis of glucose from carbon dioxide.The reactants are carbon dioxide (CO₂), ATP, and NADPH.The main product is glucose (C₆H₁₂O₆).Name 2 ways the diffusion of popular customs can adversely affect the environment
The two main ways through which the diffusion of popular customs can adversely affect the environment are depletion of scare natural resources and pollution of landscape.
What is depletion and pollution of landscape?The diffusion of popular customs can adversely impact the environmental quality in two different ways which include depletion of scarce natural resources and pollution of the landscape. Diffusion of popular customs increases the demand for raw materials. It increases the demand for some products which can strain the capacity of the environment.
Depletion in the natural resource accounting for renewable resources, refers to those parts of the harvest, logging, catch and above this sustainable level of the resource stock. For non-renewable resources, the quantity of natural resources can be extracted.
Land pollution refers to the deterioration of the Earth's land surface, at the ground and below ground levels. This causes the accumulation of solid and liquid waste materials that can contaminate groundwater and soil particles.
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most plants appear green because chlorophyll
Plants appear green due to chlorophyll, the main pigment in plants, reflecting green light while absorbing most other colors for photosynthesis.
Explanation:Most plants appear green because chlorophyll, the primary pigment in plants, absorbs light most efficiently in the blue and red parts of the electromagnetic spectrum and less efficiently in the green part. Essentially, green light is reflected, not absorbed, by the plant, giving it a green appearance. This ability of chlorophyll to absorb light energy is vital for the process of photosynthesis wherein plants convert light energy, water, and carbon dioxide into oxygen and glucose.
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A client prescribed pain medication around the clock experiences pain one hour before the next dose of the pain medication is due. which is the most appropriate action by the nurse?
A client is experiencing acute alcohol withdrawal. what complication should the nurse anticipate based on the present condition?
Which process releases oxygen into the atmosphere? 1 point
A. Aerobic Respiration
B. Anarobic Respiration
C. Photosynthesis
What molecule is used to charge the battery of our cells? 1 point
A. ATP
B. Glucose
C. Water
D. DNA
What process is radiant energy converted into chemical energy? 1 point
A. Cellular Respiration
B. Fermentation
C. Photosynthesis
D. Chemosynthesis
Chemical Energy is stored in the bonds of molecules? 1 point
True
False
Answer:
1. Photosynthesis :The process of photosynthesis releases oxygen into the environment. It can be defined as a process by which producers make food by the help of carbon dioxide and water in the presence of sunlight. The products of this process are glucose and oxygen.
2. Adenosine triphosphate: When the cells need energy for performing all the metabolic reactions of the body,The energy stored in the bonds are used. The high energy particles that provide energy to cells is ATP.
3. Photosynthesis: The radiant energy from the sun is converted into chemical energy. The sunlight is trapped by chlorophyll and photolysis of water takes place.Then product(glucose) formation takes place using the carbon dioxide and water and oxygen is released as a by-product.
4.True: The energy is stored in the bonds of the chemical compound that is broken down to release energy from them.
Example:ATP is a high energy molecule that has energy which is used to carry the important chemical reactions that takes place in the body.
Which disease most commonly results in yellowing of the skin?
A: Hepatitis
B:HIV
C: Viral Hemorrhagic Fever
D: Common Cold
Answer:
A is your Answer just did the quiz
(date I did the quiz on the bottom)
Explanation:
3 - 24 - 2021
The bumpy surface of the tongue is actually peg-like projections called __________.
is a sting ray a herbivore, carnivore, or omnivore
Which food should be eaten in order to enhance the bioavailability of iron?
Wisely selecting food combinations and getting enough vitamin C are methods to increase the amount of iron available for use in the body. Vitamin C can be lost because of heat from cooking and long storage so select fresh, raw sources most of the time. Meat-eaters should pay attention on combining animal-based foods with plant sources of iron for improved absorption.
These foods Sources for iron:
Chicken and beef livers, Beef Turkey and chicken, tuna, Fermented soy-based like tofu, Lentils, seeds, nuts, Spinach, Raisins, beans, iron fortified cereals.Which part of an amino acid gives the molecule its characteristic chemical properties?
The side chain or R-group of an amino acid gives the molecule its characteristic chemical properties.
Amino acids are composed of a central carbon atom (the alpha carbon) bonded to an amino group (NH2), a carboxyl group (COOH), a hydrogen atom, and a variable side chain known as the R-group. It's the R-group that varies among different amino acids and determines their unique chemical properties. For example, amino acids with hydrophobic R-groups tend to be nonpolar and interact with other nonpolar molecules, while those with polar R-groups can form hydrogen bonds and interact with water and other polar substances. The specific characteristics of the R-group influence the amino acid's role in protein structure, function, and interactions.
Immunological memory can be formed by exposure to an antigen which is remembered by specific leukocytes and circulating antibodies. immunological memory can be formed by exposure to an antigen which is remembered by specific leukocytes and circulating antibodies.
a. True
b. False
One of the most important characteristics of a pesticide is how long it will stay deadly in the environment, a characteristic called ____.
a. history
b. persistence
c. usefulness
d. impact
e. lethal dose
The persistence of a pesticide is an important characteristic that refers to how long it will stay deadly in the environment. Persistent organic pollutants accumulate in the environment and can be toxic. The time required to kill all microbes within a sample at a given temperature is known as the D-value.
Explanation:The subject of the question is Biology. One of the most important characteristics of a pesticide is its persistence, which refers to how long it will stay deadly in the environment. This is an important consideration because pesticides that are more persistent can stay in the environment for longer periods of time, potentially causing harm to organisms and ecosystems.
Persistent organic pollutants, or POPs, are a group of chemicals that are long-lasting and can accumulate in the environment. They tend to accumulate in higher trophic levels, such as in the fatty tissues of animals, and they are often toxic. Pesticides that are persistent organic pollutants can have long-term effects on ecosystems.
When it comes to microbes, the term used to describe the time required to kill all of the microbes within a sample at a given temperature is the D-value. This is the time it takes to reduce the population of microbes by one log (i.e., by 90%). It is an important factor to consider in processes such as sterilization and pasteurization.
Overall, understanding the persistence of pesticides, the accumulation of persistent organic pollutants, and the time required to kill microbes can help us assess the impact of chemicals on the environment and make informed decisions about their use.
A 35-year-old female client who complains of weight gain, facial hair, absent menstruation, frequent bruising, and acne is diagnosed with cushing's syndrome. cushing's syndrome is most likely caused by:
Cushing's syndrome is caused by the excessive production of the hormone cortisol, often due to a pituitary tumor. The excess cortisol influences many systems in the body leading to various symptoms like abnormal weight gain, facial hair growth, and acne. Treatments for Cushing's syndrome aim to reduce cortisol levels in the body.
Explanation:Cushing's syndrome is caused by the hypersecretion of the hormone cortisol by the endocrine system, most commonly due to a pituitary tumor leading to excessive production of ACTH. This overproduction of cortisol can lead to a wide range of symptoms including abnormal weight gain, facial hair growth, frequent bruising, acne, the characteristic moon face, diabetes, hypertension, excessive body hair, osteoporosis, and depression. Cortisol's effects on the body include high blood glucose levels, an increased risk of obesity, weakness, and fatigue, and it also leads to the slow breakdown of proteins to make glucose via gluconeogenesis.
Treatments for Cushing's syndrome focus on reducing the cortisol levels. This can be done through various methods including discontinuing the use of cortisol ointments, surgery to remove the pituitary tumor causing the overproduction, or the use of medications to regulate cortisol amounts. In cases where surgery is not suitable, radiation therapy may be used to reduce the size of the tumor or to destroy parts of the adrenal cortex.
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The most weathered and leached of all soils are the ________.
What are some major factors that are related to respiratory diseases that could affect one's vital capacity?