thickened cell walls
Cells in the stem, needed for support, develop thickened cell walls. These specialized cells are called collenchyma cells.
After suffering a head injury, amanda was taken to a medical clinic where recording electrodes were placed directly on amanda's scalp to monitor her brain waves. the clinic was making use of a(n)
Which statements are true for dna and rna? check all that apply?
Answer:
It's A, C and E on Edge.
What is a characteristic of a minerals
A medium has an antibiotic added that inhibits the growth of most bateria. only one species of bacteria can grow on this medium. based on this information, the medium would be functionally classified as
What is the main purpose of scientific models?
Answer:
The scientific models specifically have a role in determining the outcomes in the circumstances where it would not be possible to perform experiments or treatments in order to obtain a result. These models utilize logical deduction and information in order to instigate some of the factors and formulate an outcome on the basis of the input. While these models are hypothetical, they rely upon the proven scientific information and can be close in determining the natural process.
this kind of cell from a multicellular organism does not have a large central vacuole
Answer: Animal cell
Explanation:
Animal cells have a nucleus and other membrane-bound organelles. And they form multicellular organisms because they depend upon many different cells for all of its functions.
Plant cells also exists as multicellular organisms, although some of the plants are unicellular. They have a large central vacuole, which is the largest organelle in the cell responsible to maintain the pressure within the plant cell to provide structure by storing water. While animal cells vacuoles perform other functions, assisting in exocytosis and endocytosis. So the main function of vacuoles in animal cells is to remove waste products. There are many small vacuoles in the animal cell, and they scattered everywhere within the cell.
Tissue found in the ____________ that contains ____________ cells is called nervous tissue.
Final answer:
Nervous tissue consists of neurons and glial cells, specialized for sending and receiving electrochemical signals in the CNS and PNS. It includes gray matter and white matter, with neurons being the primary communicators supported by glial cells.
Explanation:
Tissue found in the central nervous system (CNS) and peripheral nervous system (PNS) that contains neurons and glial cells is called nervous tissue. Nervous tissue is unique because it is capable of sending and receiving electrochemical signals that provide the body with information. Neurons are responsible for communication through electrical signals and are supported by glial cells, which maintain the environment around the neurons to ensure proper function.
Nervous tissue is characterized by two types of regions within the nervous system structures: gray matter, predominantly containing cell bodies and dendrites, and white matter, composed largely of axons. The myelin sheath, a lipid-rich substance, insulates the axons and gives white matter its characteristic color. This structural organization is essential for the communication function of the nervous system, making neurons the more functionally significant cells.
which kind of bond is created by a weak electrical attraction between polar molecules
how many electrons does calcium have
Answer: 20 electrons
Final answer:
A neutral calcium atom has 20 electrons, but when it forms a calcium ion (Ca²⁺), it loses two valence electrons, resulting in 18 electrons.
Explanation:
Calcium, with an atomic number of 20, has 20 electrons when it is in its neutral state. However, when calcium forms a cation, it tends to lose all of its valence electrons to achieve the stable electronic configuration of the noble gas that precedes it in the periodic table, which in this case is argon (Ar). As calcium is a group 2 element, it has two valence electrons in its outermost shell (4s²) and when it loses these two electrons, it forms a Ca²⁺ ion with 18 electrons and a 2+ charge. These two electrons can be donated to other elements, such as chlorine, creating ionic compounds like calcium chloride (CaCl₂). Therefore, a neutral calcium atom has 20 electrons, but the calcium ion Ca²⁺ has 18 electrons due to the loss of the two valence electrons.
Surface area = 4πr2;
where r is the radius of the sphere;
π is a constant that is roughly equal to 3.
Using the simple approximation above, calculate the surface area of a sphere with a radius of 5 meters.
Answer:
300 square meters
Explanation:
The formula for surface area of a sphere is
[tex]A=4\pi r^2[/tex] .... (1)
where, r is the radius of the sphere and π is a constant that is roughly equal to 3.
It is given that the radius of the sphere is 5 meters..
Substitute π = 3 and r=5 in equation (1).
[tex]A=4\times (3)\times (5)^2[/tex]
[tex]A=12\times 25[/tex]
[tex]A=300[/tex]
Therefore the surface area of a sphere with a radius of 5 meters is 300 square meters.
what does the comprehensive environmental response compensation and liability act (superfund) do ?
a. It encourages businesses to keep hazardous waste sites open.
b. It mandates the clean-up of abandoned hazardous waste sites open.
c. It requires local governments to keep hazardous waste sites open.
d. It allows local government s to close hazardous waste sites and leave them as they are.
The comprehensive environmental response compensation and liability act or popularly known as CERCLA or Superfund authorizes the President to respond to releases or threatened releases of hazardous substances into the environment. It was designed to fund the cleanup of sites contaminated with hazardous substances and pollutants.
Hence, the correct answer is option B.
The place in the cell where you would most likely find the highest concentration of ribosomes is the
A patient has severe rheumatoid arthritis affecting her hands. what measures can be taken to facilitate optimum nutrition?
Rheumatoid arthritis, it is the disease or disorder that affects many joint of the body which includes hands and feet.
A patient has severe rheumatoid arthritis affecting her hands. Following measures can be taken to facilitate optimum nutrition if a patient has severe rheumatoid arthritis affects on her hands is to determine her food preferences, provide adaptive utensils to her for example with large handles and attach a plate guard to the plate which allows a patient to push the food up against the plate guard.
Theophrastus was considered the "Father of Botany" in the approximate year _____. 800 B.C.
300 B.C.
500 A.D.
1500 A.D.
Identify the blood vessel marked in the angiogram
Angiogram detects a blood vessel named as brachiocephalic.
Further Explanation:
Blood vessels named as brachiocephalic is initiate from the aortic arch. It is a mediastinum artery. It is also known as the brachiocephalic trunk and innominate artery. This is because of blood flow to this artery to the neck, head, and arm. It provides blood to the right subclavian artery and carotid artery. It is a blood vessel that has a thick wall and takes blood away from the heart.
It is also referred to as a trunk because it is the support for the other two arteries. The length of the brachiocephalic artery is approximately four to five centimeters from the aortic arch to the point where it dived into the carotid artery and subclavian artery. The brachiocephalic artery is not present in the left region of the body. It varies in appearance and size.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Cardiac system
Keywords:
Artery, blood vessels, branches, subclavian, carotid, aortic arch, blood flow, length, trunk, aorta, midline, size, appearance, body, four, five, brachiocephalic artery.
What are small unopened or plugged sebaceous glands that occur in a newborn’s mouth and gums?
Francisco wrote these notes on one of the scientists who contributed to cell theory: 1838 Studied plants Used a microscope Concluded that plants are made of cells Who are these notes about? Virchow Schleiden Leeuwenhoek Schwann
Schleiden in 1838 said plants are made cells
Answer:
b
Explanation:
What is a mycotoxin
Mycotoxin may be defined as a type of toxic chemical synthesized by organisms of the kingdom fungi. Such type of toxic chemicals are capable of inducing numerous diseases and death in humans as well as other animals.
What is Fungi?Fungi may be defined as any constituent of the class of eukaryotic organisms that incorporates microorganisms such as yeasts and molds, etc.
Once the mycotoxins are taken or ingested by humans or other animals, they are known to cause immune system suppression, mutations, cancer, general toxic effects, etc.
Therefore, it is well described above.
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List a few things you would see, that you cannot see now, if your sense of vision were “better.”
The list of few things one could see, that they cannot see now, if their sense of vision were "better" are mentioned below.
Vision is the ability to see or perceive things through the eyes or the mind.
One would be able to see things that are currently too far away or too small to see with my current level of vision. Also, one might be able to see the individual details of a flower petal or the intricate patterns on a butterfly's wing.
One would have a more detailed and nuanced understanding of the world around them and would be able to appreciate the beauty and complexity of the natural world in a way that is currently beyond their reach.
Therefore, above are the certain list of what one could do if their sense of vision were" better".
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Hesi- twelve hours after sustaining full-thickness burns to the chest and thighs a client who is on nothing-by-mouth status (npo) is reporting severe thirst. the client's urinary output has been 60 ml/hr for the past 10 hours. no bowel sounds are heard. what should the nurse do?
Answer:
The nurse should give fluids and water to the client.
Explanation:
The nurse should give water to the patient because the absence of bowel sounds means that the person has nothing in his or her digestive system. in other words, there is no food or fluids that can help to hydrate the body and if the person is thirsty, it means that his or her body is demanding water to help with dehydration.
Besides, the patient has the skin burned, so the natural barrier to stop dehydration ( the skin), is damaged. As the client can not retain water properly in his or her body, the person dehydrates quicker, so the client needs more fluids and water
The psychiatrist credited with labeling schizophrenia as dementia praecox was _____.
Why are bacteria needed in the nitrogen cycle?
Other living things cannot use atmospheric nitrogen.
Other living things cannot use the nitrogen in plants.
Bacteria are the main nitrogen reservoir.
Bacteria are the main nitrogen transporters.
Bacteria are needed in the nitrogen cycle because other living things cannot use atmospheric nitrogen.
Nitrogen fixationAs far as nitrogen fixation is concerned, only bacteria are able to fix atmospheric nitrogen into forms usable by other living organisms.
They convert atmospheric nitrogen into chemical forms usable by plants.
Some bacteria fix nitrogen through symbiotic association with the root nodules of leguminous plants while others fix it by non-symbiotic association.
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During exercise, blood is shifted from the __________ into systemic circulation.
These are organisms where the genetic material is not bound by a nucleus. They are usually unicellular.
Answer:
Prokaroyote
Explanation:
Which of the following is not a limbic system structure
The cerebral cortex is not part of the limbic system, as shown in the letter B.
What is the limbic system?
It is a system with psychic functions.It is the system that integrates the nervous, endocrine, and immunological systems.The limbic system is responsible for processing emotions, motivated behaviors, and memory. It is responsible for the body's responses to stress, motivation, memory and even learning. This system is made up of the hippocampus, amygdala, midbrain, and hypothalamus.
Full question:
Which of the following is not a component of the limbic system?
a) Hippocampus
b) Cerebral cortex
c) Amygdala
d) Midbrain
e) Hypothalamus
what cellular components do some bacterial cells have that make them powerful pathogens ?
The __________ on the surface of a cell increase surface area, while the __________ assist with the movement of substances across the surface.
Final answer:
Microvilli increase a cell's surface area for absorption, and cilia help move substances across the cell surface. Microvilli are supported by an actin network and densely packed, whereas cilia are organelles that beat in coordination to transport materials over the epithelial surface.
Explanation:
The microvilli on the surface of a cell increase surface area, while the cilia assist with the movement of substances across the surface. Microvilli are cell surface modifications that contain an actin microfilament network, providing an increased surface for absorption without significantly enlarging the cell's size. Cilia, on the other hand, are projections from the plasma membrane that can beat in a coordinated fashion, moving liquids and particles across the cell surface, as in the epithelial cells of our airways.
Both microvilli and cilia are essential for the cell's interaction with its environment. While microvilli maximize the cell surface area to facilitate efficient nutrient absorption, cilia are involved in the transport of materials along the surface, contributing to processes such as clearing mucus. The Fluid Mosaic Model describes the plasma membrane's ability to allow proteins that help substances cross the membrane, further enhancing cellular function.
What materials formed the solar system?
why are emperor penguins a species
Answer:
They can mate and produce offspring that can mate
Explanation:
Doris’s heart suddenly races as a speeding car nearly collides with hers on the highway. which neurotransmitter is playing a role in this response?
Final answer:
In response to a near-collision, Doris’s sympathetic nervous system releases norepinephrine, a neurotransmitter that increases heart rate as part of the fight-or-flight response.
Explanation:
The neurotransmitter playing a role in Doris’s response of a racing heart when a speeding car nearly collides with hers on the highway is norepinephrine. Norepinephrine is released by the sympathetic nervous system in response to stress, activating what is known as the fight-or-flight response. This response includes increasing the heart rate, dilating the pupils, and raising blood pressure, all of which prepare the body to deal with a potential threat. The action of norepinephrine on the heart is excitatory, causing an increase in the rate of contractions, which explains why Doris’s heart started racing during the near-collision.