The bark of the pacific yew tree (taxus brevifolia) was the original source of one of the most effective drugs for treating tumors of the breast, lung, and other sites. taxol, a chemical extracted from this bark, kills actively replicating cells by inhibiting the depolymerization of microtubules. why are microtubules good targets for killing cancerous cells
Which of the following best describes the characteristics of less fertile soils, increase in disease-carrying mosquitoes, and flooding of homes and villages? effects of dams on society effects of a decreasing beaver population effects of agricultural farming effects of density-dependent factors
The correct answer is:
A. effects of dams on society
Explanation:
The exchange of a river's flow and sediment conveyor downstream of a dam often causes the greatest sustained environmental impacts. Yet even complex changes in the number and timing of water flows impact aquatic and riparian life, which can explain the biological web of a river system.
Which genotype would be considered homozygous dominant?a. Rr b.Tt c. mm
d. QQ
What happens if a bacterial cell lands in a jar of jelly?
The five distant planets are made mostly of
When the body begins to need a particular drug in order to function normally, it is called?
Why is there a delay between the ecg pattern and the resulting beat of the heart?
There would be a delay between the ECG pattern and the resulting beat of the heart because it takes time for the pulse to travel from the systole (ventricular contraction) to the radial artery. Pulse cannot be felt in the finger. It can be felt with a pulse oxymeter.
The delay between the ECG pattern and the resulting beat of the heart occurs at the atrioventricular node (AV node). This delay allows the atria to relax before the ventricles contract, ensuring efficient cardiac function.
Explanation:In the human heart, there is a delay between the ECG pattern and the resulting beat to allow for proper coordination and efficient pumping of blood. This delay occurs at the atrioventricular (AV) node, which is located between the atria and ventricles.
After the electrical signal spreads to the atria and causes them to contract, it reaches the AV node. The AV node acts as a gatekeeper, holding the signal for a brief moment before passing it on to the ventricles. This delay allows the atria to complete their contraction and relax before the ventricles contract.
The delay between the ECG pattern and the resulting beat ensures that the heart chambers work together in a synchronized manner, optimizing blood flow and overall cardiac function.
In fresh water a salt-water fish used to living in the ocean would be __________ to its new surroundings. the fresh water would move into the animal through its cell membranes in order to balance the salt concentration. therefore, ocean animals like salmon entering freshwater do not drink water.
hypertonic is the suitable word
The component of the blood that carries oxygen and carbon dioxide to and from the cells is _____
A client has vascular neurocognitive disorder. when teaching the family about the cause of this disorder, which would the nurse expect to integrate into the explanation?
Which structure(s) on the neuron in model 1 would receive a signal from either a sensory cell (taste bud, touch receptor, retinal cell) or from another neuron?
Final answer:
Dendrites with free nerve endings or encapsulated endings, as well as specialized receptor cells, are the neuron structures that would receive signals from sensory cells or other neurons.
Explanation:
In model 1 of the neuron, the structures that would receive a signal from either a sensory cell such as a taste bud, touch receptor, retinal cell, or from another neuron are dendrites with free nerve endings or encapsulated endings, as well as specialized receptor cells. Neurons with free nerve endings are found, for example, in the dermis of the skin and are responsible for sensing pain and temperature. Neurons with encapsulated endings like lamellated corpuscles respond to pressure and touch.
Additionally, specialized receptor cells like photoreceptors in the retina of the eye specifically respond to light stimuli. These cells, after receiving the stimuli, release neurotransmitters onto other cells, such as bipolar cells, which then synapse with neurons like the optic nerve. Therefore, these neuron structures are key for the transduction of sensory stimuli into neural signals that can be processed by the nervous system.
A client has had a pacemaker implanted and the nurse will begin client education upon the client becoming alert. which postimplantation instructions must be provided to the client with a permanent pacemaker?
Which two diagnostic tests are used to determine if congenital abnormalities of the nervous system are present in the fetus in utero? ct scan and mri thoracentesis and cxr ultrasound and amniocentesis ct scan and amniocentesis thoracentesis and mri?
Final answer:
Ultrasound and amniocentesis are the two main tests used to diagnose congenital abnormalities of the nervous system in a fetus, with CT scans being unsuitable due to radiation risks.
Explanation:
The two diagnostic tests used to determine if congenital abnormalities of the nervous system are present in the fetus in utero are ultrasound and amniocentesis. An ultrasound can reveal structural abnormalities and features like increased nuchal translucency, which can suggest chromosomal disorders such as Down syndrome.
Amniocentesis involves withdrawing a small amount of amniotic fluid to analyze fetal cells for chromosomal abnormalities, such as trisomy-21, enzymatic defects, and over 100 other genetic conditions.
This procedure can also be used in conjunction with FISH (Fluorescent In Situ Hybridization) to provide a more detailed genetic analysis when there's a high risk of chromosome abnormalities.
It is important to note that while CT scans can provide detailed images, especially for soft tissue, the use of CT scanning is generally avoided in prenatal diagnostics due to the exposure to high levels of radiation, which can be dangerous for the developing fetus.
Therefore, CT scans and thoracentesis, which involves removing fluid from the space around the lungs, are not typically used for diagnosing congenital abnormalities in utero.
_____ are the building blocks of protein.
Carbohydrates
Lipids
Amino acids
Nucleic acids
As the capture start increases, describe what happens to the fish population? what factors in the environment can affect the fish population?
When the capture starts to increase, the fish population from 50 capture start to 100 capture start upsurges. At 200 capture start, though, the population augmented in the beginning up until it touched 300 months where it significantly dropped.
Numerous environmental factors can affect the populace of fish. First, when there is a hurricane, the fish population will be affected because the water will move and change.
Second, pollution. When individuals pollute the ocean, it affects the fishes’ ability to live.
Lastly, when there is a lot of hunters that feed on fish. This may cause many fishes to be consumed and their population will be reduced.
Final answer:
Increasing capture start leads to a decrease in fish population due to dynamic growth rates that fall as population size decreases, causing overfishing. Factors affecting fish populations include predator-prey dynamics, environmental damage from industrialization, changes in marine biodiversity, and habitat destruction from fishing gear. These have contributed to a global decline in fish catches since 1996.
Explanation:
As the capture start increases, meaning the initial rate of fishing, the fish population tends to decrease. This is because the growth rate of fish is dynamic, not static, and it decreases as the population size diminishes. With increased capture rate, fishers may catch more than the growth rate, leading to a significant reduction in the fish population's ability to reproduce, a scenario known as overfishing. This unsustainable practice reduces the future potential for catches and the overall resilience of marine ecosystems.
Several factors in the environment can affect fish populations, including:
Predator-prey dynamics, where increases in predator or fishing pressure can lead to a decrease in fish numbers.The impact of industrialization, such as acid rain, that harms aquatic environments and leads to declines in fish populations.Changes in marine biodiversity, with a shift towards smaller forage fish as larger predatory fish become scarce due to overfishing.Damage to marine habitats caused by fishing gear such as trawls.The cumulative effects of these factors have led to a global decline in fish catches since 1996, signaling that current fishing practices are often unsustainable and pose a threat to future seafood supplies and prices.
Which group of proteins is used to "flag" microbes for destruction by phagocytes?
Describe the functions and properties of one or two of the macromolecules: proteins, carbohydrates, lipids, or nucleic acids. what did you find out about these molecules that you didn't know before?
The broad, fan-shaped muscle of mastication that you can feel alongside your temple as you open and close your jaw is the __________.
https://brainly.com/question/5968126 The broad, fan-shaped muscle of mastication that you can feel alongside your temple as you open and close your jaw is the temporal muscle.
Further Explanation:
The temporalis muscle is a kind of muscle that gets its name because of its position inside the body. This muscle looks like a fan-shaped muscle present at the temporal bone inside the cranium or skull. It sides bone of a skull. The temporalis muscle is attached or inserts into the coronoid process and the ramus of a mandible.
The broad fan-shaped muscle of the mastication which an individual can feel alongside their temple as an individual close or open the jaw is referred to as the temporalis. Temporalis function is to elevate and retracts the mandible. It is the chewing muscle necessary for crushing and smashing objects between the molars. The temporal mandibular joint has a unique feature that makes it able to show a unique unidirectional movement. It shows a side to side movement and forward and backward moment. These movements help in smooth chewing.
Learn more:
1. Learn more about carbohydrate monomer https://brainly.com/question/6947177
2. Learn more about core muscle stabilization https://brainly.com/question/1231927
3. Learn more about energy storage https://brainly.com/question/523624
Answer Details:
Grade: High School
Subject: Biology
Chapter: Joints and Movement
Keywords:
Mandible, muscle, temporalis, function, temporal bone, position, skull, unique, feature, fan-shaped, broad, ramus, mandibular, crushing.
Some snake venoms are harmful because they contain enzymes that increase the rate of a reaction that destroys blood cells and tissue cells. The damage caused by such a snakebite best be slowed down by
A.) applying ice to the bite area in order to decrease the temperature of the cells
B.) inducing vomiting in order to remove all of the stomach content
C.) drinking large amounts of water in order to hydrate the cells
D.) elevating the bite area in order to increase the number of blood cells present
The answer is A.) applying ice to the bite area in order to decrease the temperature of the cells - this will numb the area and stop blood flow which will slow down the effect of the snake bite.
Which of the following best describes how you meet your energy needs
How did the climate in the Eocene compare to that of today?
which statement is true about all adaptations?
A) they are learned.
B) they can be lost.
C) they reduce reproduction.
D) they enhance survival.
Correctly the spell the term that means pertaining to a disease of unknown etiology: ____________.
which of the following characteristics does the love song of j alfred prufrock share with the jilting of granny weatherall?
a. both focus on a single image or memory
b. both take place within a period of several minutes
c. both have multiple speakers and perspectives
d. both move quickly between different memories and images
The correct option is D - both move quickly between different memories and images.
The main theme of these works is the inevitability of growing older and the inevitability of death. The love song of J.Alfred Prufrock and the Jilting of Granny Weatherall, both take place within a single person's mind and have a single speaker with the same theme.
Although the incubation period for chickenpox is about 21 days, it is during the _____ days before the rash develops that the newly infected host is capable of transmitting the virus to other susceptible contacts.
Weak covalent bonds, such as ones in carbohydrates and lipids, have:
Compare and contrast prokaryotic and eukaryotic gene expression. sort each characteristic into the appropriate bin.
PLEASE ANSWER! THIS IS URGENT! 15 POINTS!
Examine the diagram of the cell cycle. Which label identifies the step labeled W?
which of the following statements is true about the structure of the cell membrane?
A. the two layers of the plasma membrane are identical
b. the plasma membrane is a rigid structure
c. the proteins on the two layers are not identical
d. proteins are found only on one surface of the membrane
A client returns to the nursing division after a procedure. the client tells the nurse that the client was awake during the procedure and recalls certain events. what is the nurse's priory intervention
Answer:
Must make a note of the client's description, further intervene it and then report it to the doctor handling the case of client
Explanation:
The nurse as a part of primary intervention must listen to the client and intervene further to look for anything unusual. Also he/she is required to make a note of the client’s explanation and condition and bring this into the notice of the doctor. In any case the nurse is not supposed to deny, neglect or dismiss the client’s feeling. In case if some mistake has occurred during the nursing session, he/she must admit it along with reporting it to the doctor for future interventions.