Final answer:
A macromolecule is a large molecule essential for life, made up of smaller organic molecules. The four major types found in all living things are proteins, carbohydrates, lipids, and nucleic acids, each contributing to cell structure and function. They are organic and often contain elements like oxygen and nitrogen.
Explanation:
What is a Macromolecule?
A macromolecule is a very large molecule necessary for life, typically composed of thousands or more atoms, and created by polymerization of smaller subunits (monomers). There are four major classes of biological macromolecules present in all living things: proteins, carbohydrates, lipids, and nucleic acids. Each of these macromolecules plays a crucial role in the structure and function of cells. They are built from smaller organic molecules and perform a wide array of functions within organisms.
Common Characteristics:
All four types of macromolecules are organic, meaning they contain carbon atoms covalently bonded to hydrogen, and often include other elements such as oxygen, nitrogen, and phosphorus. Proteins function as molecular machines and structural components of cells, carbohydrates provide energy and structural support, lipids serve as building blocks of membranes and energy storage molecules, and nucleic acids (DNA and RNA) store and transmit genetic information.
Why would water have to have appeared on earth before life?
Two descriptions for a sub-atomic particle are listed below:
Description 1: Revolves around the nucleus of the atom
Description 2: Has the least amount of mass
Which sub-atomic particle or particles fit these descriptions?
Electrons only
Protons only
Electrons and neutrons
Protons and neutrons
The answer to that question is electrons and neutrons
The sub-atomic particle or particles fit these descriptions is :
Electrons and neutrons
What are 3 types of subatomic particles?There are 03 subatomic particles:
Protons, Neutron and Electrons.Two of the subatomic paricles have electrical charges: protons have a positive charge while electrons have a negative charge
.
Thus, option "C" is correct.
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What microscope do you use to examine the internal structure of a nucleolus?
When a body had the odor of almonds, it usually suggests what kind of poisoning?
Answer:
Cyanide poisoning
Explanation:
Cyanide poisoning results from exposure to various forms of cyanide. Potential routes of exposure includes places involved in certain insecticides, metal polishing, the medication nitroprusside etc. Symptoms can be seen usually within few minutes that includes slow heart rate, low blood pressure, seizures, loss of consciousness and cardiac arrest. Decontamination and antidote are two ways of treating the cyanide poisoning.
Compare the basic treatments for type 1 and type 2 diabetes.
Type 1 diabetes represents 10% of all cases of diabetes, it is usually diagnosed in children and adolescents, and sometimes, albeit rarely, in people over 40 years of age.
Patients are supported by:
- Insulin injections
- Medium intensity physical activity
-Surve one's diet
-Treatment of glycated hemoglobin (HbA1c)
- Control of blood pressure
-Surveillance of cholesterol
Type 2 diabetes occurs when the pancreas does not produce enough insulin or when the body does not use the insulin it makes properly.
Patients are supported by:
Oral antidiabetics
-Medicines that stimulate insulin production or insulin injections
-Surve one's diet
-Regular physical activity
-Treatment of glycated hemoglobin (HbA1c)
- Control of blood pressure
-Surveillance of cholesterol
Most babies born to mothers who used cocaine regularly during pregnancy: select one:
a. are born drug addicted.
b. are extremely placid and calm.
c. have abnormally low pitched and dull cries.
d. survive only a few days
The most important reason to wash, rinse and sanitize a meat slicer or knife is to:
The most important reason to wash, rinse and sanitize a meat slicer or knife is to: prevent it from harboring and breeding harmful microorganisms such as bacteria.
Washing or sanitizing a meat slicer or knife after use is very important. When a meat slicer or knife is not cleaned or sanitized regularly, meat can accumulate in it and allow harmful microorganisms such as bacteria to grow. The organism (bacteria) can contaminate foods and lead to foodborne diseases.
A forensic scientist reports that the blood type from a fight scene and that of a suspect are both blood type
a. what type of analysis was done?
I break down organic matter into simpler compounds. I am a?
How are proteins are made, packaged, and transported within the cell?
Ribosomes are the protein factories of the cells. They use the genetic instructions from the nucleus to assemble the proteins of the cell, as well as other proteins the body needs.
The nuclear membrane is connected to the endoplasmic reticulum (ER). The ER is a network of membranes in layers, sacs, and tubes where organic molecules are made. These membranes work with the Golgi apparatus, the cell's vesicles and vacuole, and are collectively known as the endomembrane system. The endomembrane system is involved in producing, sorting, and packaging materials of the cell.
The endomembrane system transports materials around the cell. Some parts of the endomembrane system also participate in transporting substances out of the cell.
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What organelles found in plant and animal cells are also found in bacterial cells?
How do cardiac cells sustain a membrane potential of around 0 mv during the long plateau phase?
They are actually assisted by the Na + / Ca 2+ exchanger. This specific exchanger produces an inward (or depolarizing) current which helps sustain the membrane potential near 0 mV. This is achieved by moving 3 Na + into the cell for every 1 Ca2+ out.
Which two functions may be battling it out during sleep start, or 'hypnagogic myoclonus'?
a
your motor function and your sleep function
b
your dreams vs. reality
c
your fight or flight response
Sleep start, or 'hypnagogic myoclonus', involves a small conflict between motor function and sleep function as the brain transitions to sleep. It is a normal occurrence that can happen during this transition and is not directly related to the sympathetic or parasympathetic nervous systems in this context. Damage to the nervous system, however, can impair the fight-or-flight response.
Explanation:The phenomenon of sleep start, or 'hypnagogic myoclonus', is thought to be a battle between motor function and sleep function. During the transition from wakefulness to sleep, the brain works to inhibit muscle activity, allowing for rest. However, sometimes there can be a misfire in this transition process, resulting in a sudden twitch or sensation of falling. This is not typically a conflict involving dreams versus reality or the fight or flight response, but rather a normal process of the body transitioning to sleep that can occasionally experience a minor hiccup. Specifically, the sympathetic and parasympathetic systems, while indirectly related through the broader autonomic nervous system which manages bodily functions, are not the direct cause of sleep starts.
If a person experiences nervous system damage, several endocrine-related body functions can be affected, such as the fight-or-flight response, which is directly related to the sympathetic nervous system and can be impaired due to nervous system damage.
why do humans sweat and dogs pant
Humans sweat due to numerous active sweat glands facilitating cooling by evaporation, while dogs pant, evaporating water from their respiratory system to regulate their body temperature.
Humans sweat and dogs pant as ways to regulate their body temperature, also known as thermoregulation. Humans have developed sweat glands that secrete watery sweat, which cools us as it evaporates from the skin. On the other hand, dogs rely on panting to cool down. When a dog pants, it evaporates water from its tongue and respiratory tract, using body heat, which helps to lower its body temperature.
These differences are due to evolutionary adaptations. In humans, the loss of body hair and development of extensive sweat glands allows for efficient cooling during activities or exposure to high temperatures.
What type of graph is represented by figure 1-1?
A) bar
B)line
C)circle
D)none of the above
Answer:
B) Line.
Explanation:
A line graph is used to visualize the value of something over time. The graph consists of two axes, Horizontal-X and Vertical-Y.
In the graph showed in the question the Horizontal X-axis is the distance in time, in this case in seconds. And the Vertica Y-axis is the distance in meters.
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(Will give brainliest and thanks) Explain how earths hydrosphere and atmosphere interact during hurricane formation
When the air above the warm ocean water is warmed and evaporated in the form of water vapors. These vapors act as a fuel for the hurricane formation as it is strengthened by the latent heat released by condensation of the vast amounts of water vapor.
A challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that _____. a challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that _____. all animals develop similar embryonic gills mutations have a far more dramatic effect on embryos than on adult organisms the embryological development of many plants and animals is almost identical embryos of dissimilar organisms, such as sharks and humans, resemble each other the more advanced the a
Some patients who are given a sugar pill to treat headaches feel much better. this is an example of the:
Answer: Placebo effect
Explanation:
They believed the pill was meant to help with their headache so it did. Even though the pill was fake.
Current understanding of the evolutionary relationships among organisms _____.
In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?
The explanation regarding the given situation should be described below:
The following information should be considered:
In the case of rock layers, the fossils should be found and less than trilobite fossils, and trilobite fossils are found less than ammonite fossils.It could be measured that jelly fish should be existed prior trilobites and ammo-nites.Learn more: https://brainly.com/question/13013054?referrer=searchResults
Which of the following is an accurate description of an adult stem cell?
A. Totipotent
B. Blastocyst
C. Multipotent
D. Embryonic
Explain how the surface tension of water is important in the biological world
The type of passive transport that involves the movement of water across a semipermeable membrane from a region of high water concentration to a region of low water concentration is called what?
Water has the ability to dissolve salts and carry dissolved carbon dioxide. how does this action help the human body maintain homeostasis?
Answer:
The carbon dioxide concentration will be constant by diffusion and the salt balance occurs by osmosis in human body. The maintenance of constant internal environment is homeostasis.
Explanation:
Homeostasis is the process of keeping a constant internal environment. Here all the physiological activities should be at a constant level. This includes the maintenance of the blood sugar level, carbon dioxide concentration, salt, temperature regulation.
The salt balance is maintained in the body by aldosterone hormone or ADH hormone. It is a steroid hormone secreted from the adrenal cortex. When the salt concentration is more in the blood, aldosterone secretion will be more. It helps to reabsorb more salt by the distal convoluted tubule.
When the salt concentration is less in the body the secretion of the ADH hormone is less. This maintains the osmoregulation of the body by keeping the sodium level constant.
Another example is the maintenance of carbon dioxide concentration in the blood. In the blood, the carbon dioxide concentration is less than the oxygen. Sometimes due to physical exercise, cellular respiration increases the level of carbon dioxide.
In this situation, the medulla oblongata sends the signal to the heart. Then the heart helps carry more carbon dioxide in the blood and reaches the lungs. Thus the heartbeat and breathing rate will more. This expels out the excess carbon dioxide from the body.
This process happens by diffusion while the salt balance has done by osmosis.
Why do elodea and onion cells have more consistent shapes than human epithelial cells?
Final answer:
Elodea and onion cells have consistent shapes because of their rigid cell walls, while human epithelial cells exhibit a variety of shapes due to their flexible plasma membranes and specialized roles within the body.
Explanation:
Elodea and onion cells have more consistent shapes than human epithelial cells due to their cell walls and the environments they inhabit. Plant cells, such as those of Elodea and onion, possess rigid cell walls made primarily of cellulose. This feature gives them a fixed, often rectangular shape, allowing for a consistent cellular arrangement similar to bricks in a wall. In contrast, human epithelial cells lack cell walls and exhibit a variety of shapes due to their specialized functions and locations within the body. Epithelial cells can be flat (squamous), cube-shaped (cuboidal), or columnar (taller than they are wide), and their shapes can even change in transitional types, adapting to the specific needs of the tissue or organ they form part of. This adaptability is essential for functions such as absorption, protection, and secretion. Furthermore, the presence of a flexible plasma membrane instead of a rigid cell wall allows human cells to alter their shape, enabling processes like cell movement and tissue repair.
In all muscle cells, two kinds of protein filaments slide past each other to shorten the muscle cell and generate force. what broad theme of biology does muscle illustrate?
out of hypothesis, theory and law , which occurs before the experiment is complete?
How many stacked pennies would reach the moon? (assume that a penny is 1 mm thick.)?
explain how using antibacterial wipes could assist mutation
Using antibacterial wipes can contribute to the mutation of bacteria by applying selective pressure that favors resistant strains, which can survive and proliferate. Hyperevolution and horizontal gene transfer are mechanisms that can facilitate the spread of antibiotic resistance. While most mutations are harmful, in large populations, the few beneficial mutations can lead to antibiotic-resistant bacteria.
When bacteria come under stress from agents like antibacterial wipes, which often contain antibiotics or antiseptics, they can undergo a process that increases mutation rates as a form of self-defense. This heightened state of mutation, known as hyperevolution, allows the bacterial population a greater chance of developing mutations that could lead to antibiotic resistance. Most mutations are detrimental, but in a large population, some bacteria may acquire beneficial mutations that allow them to survive and thrive despite the presence of antibiotics, thereby increasing the frequency of resistant bacteria over time through natural selection.
Furthermore, the exposure to antibiotics does not 'cause' bacteria to become drug-resistant - the resistant genes are often already present in the bacterial population. However, the use of antibacterial substances can apply selective pressure, favoring bacteria that either already possess resistance genes or those that acquire them through spontaneous mutation or horizontal gene transfer. Horizontal gene transfer allows the exchange of DNA between bacteria, spreading resistance traits more quickly than through mutation alone.
It's also critical to understand that some bacteria can survive antibiotic treatment without being resistant by entering a state of dormancy, known as antibiotic tolerance. These 'dormant persisters' halt growth in the presence of antibiotics, avoiding being killed, but they do not possess or acquire resistance genes. Finally, the development and spread of antibiotic-resistant bacteria are major public health concerns, with CDC estimates indicating over two million infections from resistant bacteria annually in the United States.
A plant may open and close its stomata to prevent excess water loss and maintain _____.
adaptability
homeostasis
negative feedback
a system level