____ are slender threads inside of a cell’s nucleus that carry genes. chromosomes ribosomes golgisomes dna strands
During rem sleep, your skeletal muscles are relaxed because messages from the motor cortex are blocked by the
Answer:
Brainstem
Explanation:
During REM sleep , the electrical activity of our muscles get reduced or paralysed which is primarly due to blocking of messages by the brainstem.
Trigeminal motor neurons found in the brain cell helps in moving the muscles but during REM sleep, the two neurotransmitter receptors namely GABAA and glycine are paralysed by the brain stem and hence no muscle activity could be observed during the REM sleep
Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is causing global warming?
choose the answers that best fit
Because the Earth goes through periodic cycles of cooling and warming.
Because the levels of carbon dioxide being released by humans has not increased since the past.
Because climate is so complex that the two cannot be definitively related.
Because the statistics are not clear about how much additional carbon dioxide input would be required to raise global temperatures.
Answer: Because the statistics are not clear about how much additional carbon dioxide input would be required to raise global temperatures.
Explanation:
Global warming can be define as the increase in temperature worldwide due to increase in abundance of greenhouse gases in the atmosphere. These gases are responsible for trapping the heat energy from sunlight.
Carbon dioxide is also a greenhouse gas which is chiefly responsible for global warming. There is a controversy that human beings are responsible for global warming as release of carbon dioxide into the atmosphere is due to burning of fossil fuels and deforestation on the large scale. But volcanic eruption and other natural factors are also responsible for such increase in abundance. Therefore, a proper statistical account for release of carbon dioxide in the environment has not been framed.
Need help asap The relationship between bacteria and legumes that results in nitrogen is best described as _______.
a.
parasitic
b.
mutualistic
c.
commensalistic
d.
none of the above
The relationship between bacteria and legumes that results in nitrogen is best described as mutualistic.
What do you mean by mutualistic relationship?Mutualism describes the ecological interaction between two or more species where each species has a net benefit. Mutualism is a common type of ecological interaction.
A mutualistic relationship is when two organisms of different species "work together," each benefiting from the relationship.
Mutualism is a type of symbiotic relationship where all species involved benefit from their interactions. While mutualism is highly complex, it can be roughly broken down into two types of relationship.
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Explain how hunter-gatherers affected the environment in which they lived.
Dna consists of coding sections (known as ________) and non-coding sections (known as _________). exons / protons introns / protons exons / introns introns / exons
DNA consists of coding sections (known as exons) and non-coding sections ( known as Introns ).
What is exons ?The coding section of DNA or RNA that code for proteins The exons are involved in formation of mature mRNA ( messenger RNA ) by covalent bond to one another.What is introns?The non-coding sections of section of a tRNA ( RNA transcript) or DNA The introns are not expressed in final messenger RNA (mRNA) product.learn about DNA,
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Cells such as neurons, which rarely if ever divide, can be explained as
A(n) ___________ is a cut in which a portion of the skin or other soft tissue is partly or completely torn away, exposing fat or muscl
A laceration is a tear or cut in the skin that may expose underlying tissues such as fat or muscle, with a risk of infection. Cleaning and proper care are necessary to promote healing, often involving the excision of damaged tissue and possibly suturing.
A laceration is a cut in which a portion of the skin or other soft tissue is partly or completely torn away, exposing fat or muscle. This type of injury can penetrate through various layers of skin, including the hypodermis, which is the subcutaneous layer of skin composed mainly of loose connective and fatty tissues. Lacerations are different from an incision, which is a precise cut made in the body to perform surgery. When the skin is broken, there is a high risk of infection because bacteria can enter through the wound and potentially spread to other parts of the body.
Care for a laceration typically involves cleaning the wound to prevent infection, which might include the excision of damaged tissues and cell debris from the wound or burn to promote healing. In some cases, the wound might require suturing to close the wound edges, and procedures such as dermabrasion, surgery, or ablation may be involved, depending on the severity and nature of the injury.
To help sort out those bacteria that have the vgp gene, scientists first attempt to grow the bacteria both in a medium with ampicillin and in a medium without ampicillin. demonstrate your understanding of this step by sorting the four bacterial classes based on where they will grow.
the main method of heat transfer occurring within the water is called
The process of viewing the entire length of the small intestine using an ingestible video camera with a light source, which is enclosed in a capsule about the size of a large vitamin pill, is known as a capsule
Which type of cells in a plant normally have the most chloroplasts?
The site of communication between two neurons is called the
The natural or human-induced reduction in the potential ability of the land to support crops or livestock is
The largest component of the neuron, which coordinates the information-processing tasks and keeps the cell alive, is the: axon. cell body. synapse. nucleus.
the main function of vitamin e in the body is to act as a(n) ____.'
Vitamin E serves as a potent antioxidant in the body, protecting cells from oxidative damage by scavenging free radicals. It helps maintain cellular integrity and has a role in regulating enzyme activities and neurological functions. It's found in vegetable oils, nuts, and spinach.
The main function of vitamin E in the body is to act as a biological antioxidant. Vitamin E, which is a group of compounds including tocopherols and tocotrienols, performs its antioxidant role by scavenging harmful by-products of metabolism, such as free radicals. These highly reactive molecular fragments can cause oxidative damage within the body, and vitamin E protects cells by preventing the oxidation of lipids, which is crucial for maintaining the integrity of cell membranes.
As a chain-breaking antioxidant, vitamin E interacts with free radicals to form a tocopheryl radical, which is then reduced back to its original state by another antioxidant such as vitamin C. This process not only protects the body's cells and tissues from oxidative stress but also prevents the oxidation of fats in foods, keeping them from becoming rancid. The activity of vitamin E extends to inhibiting certain enzyme activities and playing a role in neurological functions.
Sources of vitamin E include vegetable oils, nuts, and spinach. A deficiency of this vitamin can lead to issues like anemia and retinal damage, while excessive intake beyond recommended amounts may lead to toxicity.
The nurse is ready to begin the physical examination of an 8-month-old infant. the child is sitting contently on the mother's lap, chewing on a toy. what should the nurse do first?
A client with impaired peripheral pulses and signs of chronic hypoxia in a lower extremity has a femoral angiogram. what is the priority nursing action after the angiogram?
I dentify four threats to the biodiversity in your own environment and briefly explain each threat
How would a muscle injury surrounding a broken vessel effect hemostasis?
If you encounter an animal on the roadway, it's best to
A circular opening cut into the skull to reveal brain tissue and decrease intracranial pressure is called a
The body region typically referred to as the elbow is anatomically called
The anatomical term for the elbow is the elbow joint, which comprises the articulation between the trochlea of the humerus and the trochlear notch of the ulna, as well as the capitulum of the humerus and the head of the radius.
Explanation:The body region commonly known as the elbow is anatomically referred to as the elbow joint. This joint is formed by the articulation between the trochlea of the humerus and the trochlear notch of the ulna, along with the joint between the capitulum of the humerus and the head of the radius. The forearm, located between the elbow and wrist joints, contains the ulna medially and the radius laterally. The elbow's complex structure allows for flexion and extension movements essential for upper limb function.
A population of hummingbirds is composed of individuals with short or long beaks, which they use to reach nectar inside flowers. A flowering trumpet vine that produces many deep, bell-shaped flowers is introduced to the region, resulting in fewer short-beaked and more long-beaked hummingbirds. Which of the following conditions most likely caused this shift in the hummingbird population?
Hummingbird predators avoided areas where the trumpet vine grew.
Hummingbirds that compete for nectar were more successful with long beaks.
Hummingbirds with short beaks overproduced offspring with longer beaks.
Hummingbirds starved because the trumpet vine limited the food supply.
Answer: Hummingbirds that compete for nectar were more successful with long beaks.
Explanation:
Adaptation is a change that helps an organism to survive in it's environment. These changes may occur in the genetic make up, physiology, morphology and behavior.
The hummingbirds compete for nectar are of two morphological types such as short and long beaks. Both of these hummingbirds compete for the same resources. Therefore, the hummingbirds with long beaks will be able to obtain nectar from bell shaped flowers. Hence, these will be able to produce more number of offsprings and the adaptation of long beak will become prominent in subsequent generations.
Why did redi carry out another experiment with three jars?
Francesco Redi performed an experiment with three jars to disprove the theory of spontaneous generation by showing that maggots did not randomly appear but were born of flies' eggs.
Explanation:Francesco Redi was a 17th century Italian physician who conducted an experiment with three jars to disprove the then-prevalent theory of spontaneous generation, which claimed that living organisms could arise from non-living matter. Each jar had meat in it. The first jar was left open, the second was covered with gauze, and the third was sealed. Flies were able to lay eggs on the meat in the open jar, resulting to maggots. For the second jar, flies were attracted to the meat but were unable to reach it due to the gauze, hence no maggots were found. And for the sealed jar, there were no flies nor maggots observed. This experiment established that the maggots did not spontaneously appear but were born of the flies' eggs.
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The bony roof of the mouth is formed by the ________ bone(s).
A survey on the Pacific coastline of California shows that kelp is currently being harvested faster than it can grow back. How would this resource be classified?
This question is not complete
Complete question:
A survey on the Pacific coastline of California shows that kelp is currently being harvested faster than it can grow back. How would this resource be classified?
a. renewable
b. nonrenewable
c. potentially renewable
d. primarily nonrenewable
Answer:
c. potentially renewable
Explanation:
A renewable resource can be defined as the resource that is always available and easily replaceable in nature no matter how much we use or utilise it.
Examples of renewable resource is
a. heat from the sun which can be used for solar energy
b. Oxygen
c. Water
d. Aquatic organisms
e. Trees such as Bamboo
Before administering an intermittent tube feeding through a nasogastric tube, the nurse checks for gastric residual volume. which is the best rationale for checking gastric residual volume before administering the tube feeding?
The word carbohydrate is derived from carbon and water (hydrate). explain why this combination correctly describes this chemical group.
To treat certain brain tumors, doctors can use small beams of _____ that are focused to kill only the tumor cells.