Answer: Calix's cells have more DNA
Explanation: Mutation is the reason for the more DNA in the Calix's cells.
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Answer: hypertonic, hypotonic, isotonic
Explanation:
Answer:
hypertonic hypotonic isotonic
Oxygen binding is monitored for a solution of hemoglobin. During the experiment, the curve changes from sigmoidal to hyperbolic. Which of the following may be the reason for the change?
A positive allosteric effector was added.
A negative allosteric effector was added.
The protein dissociated into individual subunits.
The protein denatured.
During experiment, curve changes from sigmoidal to hyperbolic, the following may be the reason for the change : The protein dissociated into individual subunits.
How does oxygen bind to the hemoglobin?Hemoglobin molecule has four binding sites for oxygen molecules, iron atoms in the four heme groups and thus, each Hb tetramer can bind four oxygen molecules. From molecular weight of Hb, it is calculated that 1 g of Hb can combine with 1.39 ml of oxygen.
Oxygen is one of the substances transported with assistance of red blood cells and RBC contains a pigment called hemoglobin and each molecule of which binds four oxygen molecules. Oxygen molecules are carried to individual cells in the body tissue where they are then released.
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A cell is placed in a hypertonic solution. Which will most likely occur as homeostasis is maintained in the cell?.
Answer:
shrivel and die
Explanation:
A cell placed into a hypertonic solution will shrivel and die by a process known as plasmolysis. An isotonic solution is any external solution that has the same solute concentration and water concentration compared to body fluids. In an isotonic solution, no net movement of water will take place.
Work in a small group or alone to complete this exercise. Use your own body (in anatomical position) to identify the following bones and features of the skeleton. Name the specific bone(s) (and feature(s) if possible for each. 1. Your chin 2. The bump behind the bottom of your ear 3. The dip at the bottom midline of your neck between your two collarbones | 4. The tip of your elbow 5. The sides of your elbow 6. The protrusion or bump on the back of your wrist 7. The protrusion or bump on the back of your wrist
Mandible -chin bone. The bump behind the bottom of your ear- mastoid bone. The suprasternal notch, is The dip at the bottom midline of your neck between your two collarbones . The olecranon or “tip of the elbow” is part of the ulna. The sides of your elbow- lateral epicondyles. The protrusion or bump on the back of your wrist- carpel boss.
Describe mandible.
The largest bone in a person's cranium is called the mandible. It helps with chewing, forms the lower jawline, and holds the lower teeth in position. The mandible is subordinate to the maxilla and is made up of a body and ramus. The lower jawline is formed by a part of the body that is horizontally curved.
The upper border of the manubrium of sternum is where the jugular notch (also known as the suprasternal notch or presternal notch) is located. Just behind the ear is where the mastoid bone is situated. An inflammation of the bony air cells in the mastoid bone, which is found directly behind the ear, is known as mastoiditis.
The lateral epicondyle is the lump on the outside of the elbow. The prominence on the outside of the elbow is painful and tender due to the disease known as lateral epicondylitis. A carpal boss, also known as a carpometacarpal boss, is an enlargement of the carpal bones that make up the wrist. A hard lump forms on the wrist's back as a consequence of the overgrowth.
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Depressants are drugs that?
Answer:
Depressants are drugs that slow down the central nervous system, leading to reduced brain activity, decreased heart rate, and relaxed muscles.
Explanation:
which of the following nutrients must be supplied by the foods we eat to support the chemical processes of human physiology?
Proteins, lipids, vitamins & minerals are the foods eat to support the chemical processes of human physiology.
What is human physiology?
The study of how the human body works in both health and sickness is known as human physiology. A degree in human physiology offers good preparation for jobs or graduate school in the health professions, biomedical research, or allied fields.
The study of how organisms carry out their essential activities is known as physiology and comes from the Ancient Greek word phusiologa, which means "natural philosophy."A study of how a muscle contracts or the force that contracting muscles place on the skeleton are two examples.
Several forms of human physiology can be distinguished:
The primary area of human physiology in which we examine cell functioning is called cell physiology. Special physiology is a discipline of physiology where we research the operations of particular organs.To know more about human physiology, check out:
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A Biology student is investigating DNA replication in peony flowers; which of the
following is a specific and testable question that could guide their research?
A. What is the complementary DNA strand sequence of a peony flower?
B. What is the rate of error in DNA replication?
C. What is the error rate in complementary DNA strand sequences of peony flower
after replication?
D. What is the DNA sequence of a peony flower?
Answer: C. What is the error rate in complementary DNA strand sequences of peony flower after replication?
Explanation: This is a specific and testable question because the student can analyze the DNA sequence of a peony flower before and after replication, and compare the two sequences to determine the error rate in the complementary DNA strands.
your brother has a bacterial infection. he tells you he going to the gym where he plans to sit in the sauna for an hour. he thinks that this will cure his infection, because the heat in the sauna will denature the enzymes of the bacteria making him ill. you are a nursing student who is currently studying microbiology. you tell him that
Answer: His Plan with not work to fix that
Explanation: Homeostasis will keep his body temperature constant even in the sauna, so the bacteria (and his normal microbiota and body cells) will not be impacted.
Which of the following are ways in which protein lateral mobility can be restricted in the plasma membrane?
[Multiple answers]
A) Proteins can be tethered to the cell cortex inside the cell.
B) Proteins can be tethered to the extracellular matrix molecules outside the cell.
C) Proteins can be tethered to proteins on the surface of another cell.
D) Diffusion barriers can restrict proteins to a particular membrane domain.
E) None of the above
Proteins are attached to the extracellular matrix, the cell cortex, and obstacles such tight junctions.
What four purposes serve the plasma membrane?Identification, communication, control of solute exchange across the membrane, and separation of the nucleus from the surrounding environment are the four primary roles of the plasma membrane.
What is a simple definition of a plasma membrane?The membrane that encloses a cell's organelles and serves as a partition between them and the outside world is referred to as the plasma membrane. Every live cell has a thin membrane called the plasma membrane that surrounds it and isolates it from its surroundings.
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In a large population of approximately 1 million E. coli , one bacterium gains a mutation that gives it a fitness advantage , with a selective coefficient of . Which of the following statements is FALSE ? s = 0.001 Given the population size , the selective coefficient is large enough to overcome genetic drift . It is possible that the mutation could be lost from the population due to genetic drift . The mutation will likely sweep through the population to fixation if the individual has offspring with the new mutation Ans = 0.001 would not be considered large given that population size .
It is considered "fixed" inside the population that once frequency of a allele reaches 100%, i.e., is the only genetic variant present in either member.
What do you name a gene that is fixed inside the population due to a mutation?December 2020) An allele is considered permanent if it is the only variety of that gene in the population. The entire population is heterozygous for a fixed allele. The term "allele" typically refers with one variant gene from out numerous that could exist for a specific Genomic region.
What impact does population size have on these alleles' time to fixation?The likelihood of fixation increases because individuals with the mutant gene are much more likely to reproduce in a population that is expanding. Since it's more rare and more apt to be established, the allele has a lower risk of being lost.
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Which of the following is a benefit of using chemical signals rather than electrical signals to send messages to the next neuron?
O Electrical signalsO interneuronO hippocampus
Electrical signals are not strong enough to get through the synaptic cleft. Neurons are too far apart for an electrical signal to travel. The variety of responses produced can be expanded due to the simultaneous release of many neurotransmitters. These are the advantages of using chemical impulses rather than electrical signals.
What are neurotransmitters?Neurons use neurotransmitters to interact with one other and their target tissues during the synaptic transmission process (neurotransmission).
Nerve endings synthesize neurotransmitters, which are then released from them into the synaptic cleft. From there, receptor proteins in the cellular membrane of the target tissue bind to neurotransmitters. The target tissue is stimulated, blocked, or otherwise functionally altered.
Among the more than 40 neurotransmitters found in the human neurological system, acetylcholine, norepinephrine, dopamine, gamma-aminobutyric acid (GABA), glutamate, serotonin, and histamine are some of the most significant.
What is synaptic cleft?The synapse contains a space called the synaptic cleft. It is a component of the neural network. It refers to the region where neurotransmitters move back and forth between neurons. The synaptic cleft, which is a component of the neural pathway, aids in facilitating communication between the brain and nervous system.
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5-fluorouracil is a chemotherapeutic agent that is used for the treatment of certain types of cancers. which of the following is a mechanism by which 5-fluorouracil might work?
Answer: preventing the replication of DNA
Explanation: overreplication of cells, or extra cells, causes cancer. Stopping the replication of cells can prevent the cancer from worsening. I’ve also had this question on my homework and got the answer correct.
Which of the following is not good direct evidence that the cell-cycle control system is conserved through billions of years of divergent evolution? (EXPLAIN YOUR RATIONAL FOR EACH ONE)
(a) A yeast cell lacking a Cdk function can use the human Cdk to substitute for its missing Cdk during the cell cycle.
(b) The amino acid sequences of cyclins in plants are similar to the amino acid sequences of cyclins in humans.
(c) The Cdk proteins in humans share conserved phosphorylation sites with the Cdk proteins in yeast.
(d) Yeast cells have only one Cdk, whereas humans have many Cdks.
Answer: The statement that is not good direct evidence that the cell-cycle control system is conserved through billions of years of divergent evolution is option (d) - "Yeast cells have only one Cdk, whereas humans have many Cdks."
Explanation:
The cell cycle control system is a highly conserved and regulated process, and the presence of similar proteins across different species is one way to demonstrate its conservation through evolution. The other three options (a, b, and c) all provide evidence of this conservation.
Option (a) indicates that the human Cdk can substitute for a missing yeast Cdk during the cell cycle, which suggests that the two proteins share similar functions and mechanisms.
Option (b) indicates that the amino acid sequences of cyclins in plants and humans are similar, further supporting the conservation of the cell-cycle control system.
Option (c) indicates that the Cdk proteins in humans and yeast share conserved phosphorylation sites, which suggests that they have similar regulatory mechanisms.
In contrast, option (d) implies a difference between yeast and human Cdks, which is not consistent with the idea of conservation. However, it should be noted that the conservation of the cell-cycle control system does not require that all aspects of the system are identical across different species
how is nitrogen obtained by animals
Answer:Animals get the nitrogen they need by eating plants or other animals that contain nitrogen.
Explanation: When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water.
Identify and construct an explanation of the main disadvantage of growing a potato crop with few variations. What could be an unwanted effect
Growing a potato crop with few variations can lead to genetic homogeneity, which means that all the plants have very similar genetic makeup.
How can lack of genetic diversity affect crops?This lack of genetic diversity can make the crop more susceptible to diseases, pests, and environmental stresses, such as drought or extreme temperatures. If a disease or pest infestation targets the specific genetic makeup of the crop, it can quickly spread and wipe out the entire crop.
In contrast, if there is genetic variation within the crop, some individuals may have genetic traits that make them resistant to the disease or pest, allowing them to survive and reproduce. This genetic diversity helps to maintain the health and resilience of the crop, and increases the likelihood that some individuals will survive and pass on their beneficial traits to future generations.
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What is the name of bacteria that inter the cell ??