What type of mutation has occurred in the dna of people with sickle cell anemia? (look back, if you need to, to see what causes sickle cell.)?
Cyclopropane is a highly strained molecule. why? select all that apply.
The cyclopropane molecule is highly strained due to the presence of bond angle 60. Another reason that makes it highly strained is the torsional strain that leads to the formation of eclipsed conformation of the hydrogen bond.
Further explanation:
Cyclopropane is an explosive, colourless gas that is used for medicinal purpose. It is a non-irritating to the mucous membranes and also affects respiration. It is highly strained molecule as the confirmation of cycloalkanes is stimulated by torsional angle, angle strain as well as steric edge.
Cycloalkanes are composed of more than three carbon atoms that are not flat molecule and they are puckered.
The three as well as four-membered ring compound consists of angle strain and also minimise the internal bond angles. Angle strain is formed due to the deviation of bond angles from an optimum tetrahedral angle such as 109.5ᴼ. Torsional stress is formed due to the eclipsing interactions while a steric strain is formed when the carbon atoms are forced towards each other.
Learn more:
Learn more about the treatment of eukaryotic cell with a drug https://brainly.com/question/10767798 Learn more about the proteins synthesis in a cell https://brainly.com/question/1420458 Learn more about exchange of gases by blood cells https://brainly.com/question/1213217
Answer Details:
Grade: Senior School
Subject: Chemistry
Chapter: Organic chemistry
Keywords:
Cycloalkanes, angle strain, torsional strain, puckered, tetrahedral angle, carbon atoms, deviation.
Which is an example of an abiotic factor interacting with a biotic factor? Insects carry seeds to new places, which allow new plants to grow. People plant trees in a city park. A drought dries up a river, so deer have less water to drink. A fungus causes a grove of trees to die.
An example of an abiotic factor interacting with a biotic factor is a drought affecting the water supply for deer. Abiotic factors like temperature and water availability significantly influence the dynamics of ecosystems, affecting both the living organisms and the environment they reside in.
An example of an abiotic factor interacting with a biotic factor is a drought drying up a river, which consequently leads to deer having less water to drink. In this instance, the abiotic component (drought) has a direct impact on the biotic component (deer). Ecology examines these interactions extensively, noting that abiotic factors like temperature and water availability significantly affect the life and behavior of organisms within an ecosystem.
Additionally, an increase in rainfall would dramatically alter the ecosystem by affecting both abiotic and biotic components. Increased rainfall might enhance soil moisture and potentially support more aquatic habitats, which could lead to the growth of certain plant species, in turn influencing the types and numbers of animals that inhabit the area.
electron transport chain : _____ production :: Calvin cycle : _____ production
An oxygen atom with a charge of (+2) has ______________________.
a. two more protons than the neutral atom
b. two fewer protons than the neutral atom
c. two more electrons that the neutral atom
d. two fewer electrons than the neutral atom
Why is a single base-pair deletion mutation within a protein-coding sequence more likely to be harmful than a single base-pair change mutation?
Who reviews articles for peer-reviewed journals
Final answer:
Peer-reviewed journals utilize expert scientists to review articles, maintaining objectivity and advancing the field's knowledge; this system, while imperfect, is essential for vetting scientific research.
Explanation:
Articles for peer-reviewed journals are evaluated by other scientists, who are experts in the subject matter of the article. These peer reviewers rigorously assess the article's rationale, methodology, ethical standards, and the validity of its conclusions. Such a review process is crucial as it helps in advancing the discipline's knowledge and prevents the duplication of research findings, ensuring that each research article contributes new information to the scientific community.
The peer review system is maintained in anonymity, meaning that both the authors and the reviewers are unaware of each other's identities. This anonymity helps to maintain objectivity and reduce bias, which is especially important when high personal or financial stakes are involved. Instances of fraud, while not common, highlight the system's imperfections, emphasizing the need for integrity and honesty in scientific publication.
Peer review is not only a standard for scientific articles but also for grant proposals. This peer evaluation by qualified individuals ensures that the scientific work is original, significant, logical, thorough, and adds value to the field. While most scientific communication occurs through these rigorous channels, it is important to note that not all journals use a peer-review system; hence, the reliability of studies published without this process can be questionable.
John and Pat are identical twins with identical DNA. John works in a movie theater, and Pat works as a lifeguard. They have very different skin pigmentation. Which is the best explanation of the difference?
The answer is:
A) Skin color, a polygenic trait, is also determined by environmental factors.
Hope it helps!
2.What simple infection control procedure helped Dr. Ignaz Semmelweis save a number of lives in the 1800s?
Answer:
The correct answer is the - hand washing before lunch and clinical process.
Explanation:
Dr. Ignaz Semmelweis was a Hungarian physician that is known as father of the infection control by the hand washing. He is also known as the saviors of mothers as at that time mothers were dying after childbirth due to the infection.
Dr. Ignaz suggested the hand wash procedure before clinical procedures and eating helps in the saving life by preventing infection due to unhygienic hands.
Thus, the correct answer is - hand washing before lunch and clinical process.
- How "sartans" like Cardiosartan act in the renin-angiotensin-aldosterone system?
Bacillus anthracis, the bacterium that causes the deadly disease anthrax produces thick endospores. What is the significance role of spore formation in the reproductive cycle of this bacterium?
Because the bamboo plant on which the panda feeds is now scarce naturalists are worried about their chances of survival
Final answer:
The subject of the question is the impact of bamboo scarcity on panda survival due to deforestation and other human activities, which is a matter of biological and environmental concern.
Explanation:
Human activities such as deforestation, pollution, hunting, and overpopulation are causing alarming declines in various species' populations. Bamboo, vital to the diet of pandas, is a monocarpic plant that flowers once after multiple years. Once flowering occurs, the bamboo plant dies, severely impacting the food source for pandas. These unique plants can take up to 70 years to reach this stage, forming extensive clones in the process. The scarcity of bamboo due to human-driven habitat destruction means that pandas could face difficulties in finding enough food to survive, which is a significant concern among conservationists.
Many species, such as tigers, gorillas, pangolins, and rhinoceroses are also suffering due to human activities. Contacting local wildlife organizations can be a crucial step in contributing to the conservation efforts necessary for the survival of these species.
What can we conclude about p. caudatum from this experiment?
When you hyperventilate (breathe too fast), respiratory alkalosis (elevated blood ph) can occur, which can cause you to faint. a common but potentially dangerous method to reverse respiratory alkalosis is to hold a paper bag over your mouth and take normal breaths, thereby rebreathing the exhaled air. how might this method reverse respiratory alkalosis?
Which of the following statements is true?
a.Slow, deep breathing makes less gas available for gas exchange.
b.Breathing rate and depth do not affect gas exchange.
c.Rapid shallow breathing can reduce the amount of gas exchange without changing the total amount of gas moved in a minute.
d.Normal breathing rates and depth provide the most oxygen for exchange.
This chart shows the types of ground tissue and their functions. mc012-1.jpgmc012-2.jpg Which row (A, B, C, or D) best matches each ground tissue with its function? A B C D
The right answer is A.
Let's resume Plant tissues and their roles:
* Meristems are devolved to growth by cell multiplication;
* The covering fabrics ensure the protection of the organs vis-à-vis the
external environment;
* Parenchyma represent the bulk of the organ volume; they are
formed of poorly differentiated cells and perform various functions:
chlorophyll assimilation, storage of reserves ...
* Support tissues are made of thick-walled cells of lignin or
cellulose, giving the organs a certain rigidity;
* The conductive tissues ensure the circulation of the sap, to the organs
aerial for raw or ascending sap, to underground organs for
sap developed or descending;
* The endoderm and the pericycle are two cellular bases surrounding the
central cylinder;
* The secretory tissues release various substances (nectar, latex ...).
The right answer is A.
Stable isotopic analysis of oxygen from ice cores dating to the holocene indicates that:
The results of gel electrophoresis are shown below with four different strands of dna labeled which strands of dna is the shortest
The strand of DNA which is the shortest is 1 and is denoted as option A in this scenario.
What is DNA?
DNA, or deoxyribonucleic acid, is a molecule that carries most of the genetic instructions used in the development, functioning, growth, and reproduction of all known living organisms and many viruses.
It is often referred to as the "molecule of life." DNA consists of two long strands that coil around each other to form a double helix. Each strand is made up of nucleotides, which are composed of a sugar (deoxyribose), a phosphate group, and one of four nitrogenous bases.
From the chart we can deduce that the shortest strand and most appropriate choice is 1.
The missing diagram is in the image attached below.
A neuron can fire up to a limit of about ____________ times per second
In a lab you are conducting tests with various chemicals and neurotransmitter receptors. you notice that exposed frog muscle cells depolarize when you add the chemical nicotine to the acetylcholine (ach) receptors. what does this tell us about the relationship between neurotransmitters and their receptors?
Imagine that you are given some chemoorganotrophic bacteria to grow. what should you use as a source of energy for this type of bacteria? imagine that you are given some chemoorganotrophic bacteria to grow. what should you use as a source of energy for this type of bacteria? methane ammonia sugar hydrogen sulfide light
Unlike the somatic nervous system, the autonomic nervous system
A. is part of the motor division of the peripheral nervous system.
B. controls movement of the skeletal muscles under conscious control.
C. consists of a sympathetic and parasympathetic nervous system.
D. regulates voluntary activities.
The autonomic nervous system, unlike the somatic nervous system, consists of a sympathetic and parasympathetic nervous system, controlling involuntary body functions. In contrast, the somatic system handles voluntary skeletal muscle movements. option c.
Explanation:Unlike the somatic nervous system, the autonomic nervous system corresponds to the option C. consists of a sympathetic and parasympathetic nervous system. The somatic nervous system is responsible for carrying sensory and motor information to and from the central nervous system, and it is involved in controlling voluntary movements of the skeletal muscles. On the other hand, the autonomic nervous system controls involuntary body functions. It is subdivided into the sympathetic and parasympathetic nervous systems, which respectively manage the body's fight-or-flight response and rest-and-digest or feed-and-breed functions.
Learn more about Nervous System here:https://brainly.com/question/34443446
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How important is homeostasis in the study of anatomy?
what measurement best describes the results of a scientific experiment regarding volume
During the Cambrian period on Earth, the ___________ layer developed along with the massive production of oxygen.
A) ozone
B) ocean
C) mantel
D) carbon dioxide
Answer:
A) Ozone
Explanation:
I just took the test
Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley? a. Their numbers will soon increase. b. Their numbers will soon decrease. c. They will move to the tops of the mountains. d. They will remain unchanged.
Answer:
A predator is an organism which kills other organism to obtain it as food, whereas as a prey is the inferior organism which is incapable of defending itself and being killed by the predator.
The group of bobcats being predating the prey at the top of the mountain when moves to valley below is likely to decrease the population of the prey in the valley because although the bobcat change the location of their habitat the urge for getting food by hunting will be retained in them.
The Milky Way is a _____ galaxy.
Answer:
Barred Spiral.
Explanation:
A barred spiral galaxy is a type of spiral galaxy which has a bar-shaped structure in the center which is made up of stars.
The milky way is a barred spiral galaxy because its appearance conforms to the classification of galaxies given by Hubble.
The milky way has spiral arms and a bulge in the center and one or more bars radiate out from this central bulge and hence it is a spiral barred type of galaxy.
Why are some oil tankers being built with two hulls? a. to make the tankers heavier b. to make the tankers easier to steer c. to help prevent nonpoint-source pollution d. to help prevent oil spills
Answer: Option d
Explanation: Some of the oil tankers are being built with two hulls in order to prevent the oil spillage.
The main problem that is associated with the transportation of the oil is its spillage because it is harmful for the environment, human beings, animals and moreover for the aquatic animals.
To prevent from these problems the oil tankers are being built with two hulls.
Sodium chloride is made up of a positive sodium ion and a negative chloride ion. Therefore, it is an example of
Vision can be affected by drugs and alcohol making __________ especially difficult to distinguish.