What would occur in a cell if the production of cyclins halted during the cell cycle?
Answers
If the production of cyclins is halted during the cell cycle, the cell would remain in the same phase (e.g.- G2) and would not be able to enter into mitosis.
The cyclins are the most important core cell cycle regulators. They are a group of related proteins, as well as there are four basic types found in humans and most other eukaryotes.
Each of the cyclin is connected with a particular phase, transition, or a set of phases in the cell cycle, which helps in driving the events of that particular phase or period.
Cell cycle arrest can occur if cyclins fail to degrade. The levels of the different cyclins vary considerably across the cell cycle. A typical cyclin is present at low levels for most of the cycle, however, it increases strongly at the stage where it is needed.
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Related Questions
In a tube of media, what type of microorganism would you expect to find at the very bottom of the media?
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In a tube of media, Obligate anaerobes would be found at the very bottom of the media.
These microbes are poisoned by oxygen, so they gather at the bottom of the tube where the oxygen concentration is lowest.
Obligate anaerobes do not possess the defenses that make aerobic life possible and therefore cannot survive in air. The excited singlet oxygen molecule is very reactive. Therefore, superoxide must be removed for the cells to survive in the presence of oxygen.
Microaerophiles will grow in a thin layer below the richly-oxygenated layers.
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An important difference between the peritubular capillaries and the vasa recta in the kidney is that?
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Vasa recta are a unique kind of peritubular capillary that feeds the kidney's medulla with oxygen and nutrients, whereas peritubular capillaries are capillaries that emerge from the efferent arteriole. This is the main distinction between the two types of capillaries.
Vasa Recta: What are they?
The unique peritubular capillaries known as vasa recta supply oxygen and nutrients to the kidney's medulla. They especially come from juxtamedullary nephrons' efferent arterioles and wind around those organelles' Henle loops. They also create a parallel series of hairpin loops inside the kidney's medulla. Vasa recta have high water and solute permeability.Peritubular Capillaries: What Are They?
The efferent arteriole that emerges from the glomerulus gives rise to the capillary network known as peritubular capillaries. The renal cortex receives nutrients and oxygen via peritubular capillaries. As a result, the renal cortex contains a greater percentage of peritubular capillaries. They encircle the distal and proximal tubules.Learn more about peritubular capillary here:
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Areas along the costal regions of continents have more moderate climates than their inland counterparts. What property of water allows this to be possible?
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Areas along costal regions of continents have more moderate climates than their inland counterparts because Water has a high specific heat.
Water has a higher heat capacity than soil and rock, so the ocean takes much longer to heat and to cool than the land. Coastal areas will generally have more moderate temperatures than inland areas because of the heat capacity of the ocean.
Large bodies of water such as oceans, seas, and large lakes affect the climate of an area. Water heats and cools more slowly than land. Therefore, in the summer, the coastal regions will stay cooler and in winter warmer. A more moderate climate with a smaller temperature range is created.
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Now conduct research on the types of organisms that live in the ecosystem you chose. note that quaternary consumers and even tertiary consumers can include land animals that rely on the animals in the aquatic ecosystem for food. collect information based on these guidelines: producers: identify 2-3 species. primary (or first-level) consumers: identify 2-3 species. secondary (or second-level) consumers: identify 2-3 species. tertiary (or third-level) consumers: identify 2-3 species. quaternary (or fourth-level) consumers: identify 1-2 species. write down the species you’ve identified for each consumer level in the ecosystem.
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conduct research on the types of organisms that live in the ecosystem you choose -
Ecosystems, or biological communities, comprise both living organisms such as animals, plants, insects, and microorganisms and nonliving components such as rocks, soil, water, and sunshine.
Producers are plants and algae that manufacture their own sustenance.Herbivores eat plants and are classified as main consumers. Secondary consumers are carnivores that devour herbivores at the third level. Tertiary consumers are predators that consume other carnivores.To learn more about ecosystem from the given link
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What feature of a phospholipid's anatomy, when incorporated into the lipid bilayer of a cell's plasma membrane, prevent ions from freely diffusing into or out of a cell?
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Anatomically, phospholipids are amphipathic molecules. This feature when incorporated into the lipid bilayer of a cell's plasma membrane prevents ions from freely diffusing into or out of a cell.
An amphipathic molecule contains both a hydrophilic (water-loving) as well as a hydrophobic (water-hating) region. A single phospholipid molecule contains a phosphate group on one end which is called the “head,” and two side-by-side chains of fatty acids that form the lipid “tails”.
Phospholipids are able to form cell membranes due to the fact that the phosphate group head is hydrophilic while the fatty acid tails are hydrophobic.
The lipid bilayer thus, acts as a barrier to the passage of molecules and ions into and out of the cell.
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The direct pathway to the amygdala is _____ and conveys _____ detail than the indirect pathway to the amygdala.
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The direct pathway to the amygdala is faster and conveys less detail than the indirect pathway to the amygdala.
The centre for integrating emotions, emotional behaviour, and motivation is the amygdala. The amygdala plays a crucial role in the circuits that process fear. It mediates the arousal of fear and the link between a stimulus and fear. As a result, two channels allow information to reach the amygdala when a tone indicates danger.
Since one channel is quickly processed, the amygdala receives only approximate information about an emotional signal coming from the thalamus. The amygdala receives information about an emotional stimulus from the thalamus indirectly, through the brain. As a result, the information received via the indirect pathway is processed at a higher level and arrives at the amygdala with a short delay.
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The risk of schizophrenia among biological relatives is greatest for identical twins.
a. true
b. false
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The risk of schizophrenia among biological relatives is greatest for identical twins. This is a true statement.
What is schizophrenia?Schizophrenia is a neurological disorder that causes an affected individual to lose touch of reality.
Schizophrenia can be caused by the following:
Genetics: Gene defects caused by mutation such as deletions or duplications of genetic material increases risk of schizophrenia.Environment: Urbanicity, migration, cannabis, childhood traumas, infectious agents, obstetrical complications and psychosocial factorsBrain chemistry and circuitBrain abnormalities: Impaired communication between brain regions leads to the associated symptoms and cognitive changes.According to research, the risk of schizophrenia among biological relatives is greatest for identical twins because they are genetically identical.
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What are the two main types of populations (based on their nutritional relationships)?
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The two main types of populations (based on their nutritional relationships) are:-
1.Producers- Organisms which can synthesize their own food.
2.Consumers- Organisms which cannot synthesize their food and are dependent on producers for their nutritional needs.
Producers use energy and simple inorganic molecules to make organic compounds. They are also known as Autotrophs. They can be further classified as Photoautotrophs and Chemoautotrophs.
Photoautotrophs use energy from the Sun to make food by photosynthesis. They include plants, algae, and certain bacteria.
Chemoautotrophs use energy from chemical compounds to make food by chemosynthesis. They include some bacteria and also archaea. Archaea are microorganisms that resemble bacteria.
Consumers on the other hand are called Heterotrophs. They can be Herbivores (consuming plants) e.g. deer, Carnivores (consuming animals) e.g. lion or Omnivores (consuming both plant and animals) e.g. humans.
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Blood flowing into the heart from the venae cavae flows next through the ________ valve.
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Blood flowing into the heart from the venae cava flows next through the tricuspid valve.
Our heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
Blood that passes superior vena cava and inferior vena cava empty blood into the right atrium. Blood flows through the tricuspid valve into the right ventricle. It then flows through the pulmonic valve into the pulmonary artery before being delivered to the lungs.
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A landscaper accidentally had their leg crushed by a tree. their femur was impacted with such force that a section of the bone completely shattered into fragments. what type of break is this?
Answers
Type of break is cervical and lumbar curvatures.
If there are no ossification centers, there are no osteoblasts, no osteocytes, no spongy bone, which in turn means no compact bone thus no flat bones which serves as a protection layer.
Osteoclasts are large bone cells with up to 50 nuclei. They remove bone structure by releasing lysosomal enzymes and acids that dissolve the bony matrix. Intramembranous ossification directly converts the mesenchymal tissue to bone and forms the flat bones of the skull, clavicle, and most of the cranial bones. While bone resorption is performed by large immune cells called osteoclasts, osteoblasts, a type of specialized connective tissue-related cells, is responsible for making new bone.
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Section 2: HUMAN IMPACT
In this section of your project, describe how human behaviors impact the environment. Choose your top 3 environmental impacts to describe in this section include how they affect the environment (examples: decreased water quality, increased pollution, greenhouse emissions, depletion of natural resources).
Answers
Human behaviors greatly impact the environment by overpopulation, pollution, burning fossil fuels, and deforestation.
How human behaviors impact the environment?Humans impact the environment in many ways such as overpopulation, pollution, burning of fossil fuels, and deforestation. These changes triggered the climate change, soil erosion, poor air quality, and undrinkable water. So that's why we can say that human intervention in the environment is not good for our environment.
So we can conclude that human behaviors greatly impact the environment by overpopulation, pollution, burning fossil fuels, and deforestation.
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Kendra is studying the energy pyramid shown. Which statement is supported by the energy pyramid?
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A) The ecosystem can support fewer foxes than grasshoppers.
What is energy pyramid?An energy pyramid is also called ecological pyramid. It is a graphical representation of the energy that are found within the trophic levels of an ecosystem. The largest level of the pyramid is the producers that is present at the bottom and the shortest level is present on the top of the pyramid which is tertiary consumer that have very low in population. This make the structure like a pyramid. We know that the size of the fox is bigger than grasshopper so more energy is needed by the fox which causes fewer foxes can survive in the ecosystem.
So we can conclude that the ecosystem can support fewer foxes than grasshoppers.
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The image shows a process called vegetative reproduction, in which a new plant grows from a part of another plant. Which statement is true about the offspring formed by this process?
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The statement that is true regarding the offspring that is formed via vegetative reproduction is that the offsprings have are genetically identical to their parents.
What is vegetative reproduction?Vegetative reproduction is also called ase*ual reproduction and it is the form of reproduction that does not involve the fusion of gametes.
Vegetative reproduction as the name implies does not make use of seeds for propagating plants, rather, it makes use of any vegetative part of the plant such as;
LeafStem cuttingsRootRhizomeIn vegetative reproduction, the new plant grows from a fragment or cutting of the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules
However, the offsprings produced vegetatively are genetically similar or identical to their parent cell.
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No other cell in your body has the structure of a neuron. based on your knowledge of form and function, what can you infer from this?
Answers
It follows that no other cell in the body performs a neuron's exact functions.
What about neurons?Information is transmitted via neurons. They communicate between various brain regions and between the brain and the rest of the nervous system through electrical impulses and chemical signals.The basic building blocks of the brain and nervous system are neurons (also known as neurones or nerve cells). The cells known as neurons are responsible for receiving sensory data from the outside world, sending commands to our muscles, and converting and relaying electrical signals at various points along the road.The bulk of neurons in vertebrates are found in the central nervous system, however some are found in peripheral ganglia and many sensory neurons are found in sensory organs like the retina and ear.A neuron is made up of a cell body, which includes a nucleus and cytoplasm, from which long, thin portions that resemble hair grow. The neuron's lone long component, known as the axon, is responsible for carrying nerve impulses to various body areas. Dendrites are the short, branching components of the neuron.
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HELP! 30 points plus BRAINLIEST
Which one of the following methods is most effective in protecting the environment?
A) Finding new locations to store wastes where they are less likely to harm organisms.
B) Physically removing wastes that are in the environment.
C) Recycling materials so that fewer resources are used and less trash is produced.
D) Reducing the amount of materials used without recycling.
Answers
Answer:
you better give me brainliest
Explanation:
Recycling materials so that fewer resources are used and less trash is produced
The medulla is considered part of the brain rather than the spinal cord because it ____.
Answers
Answer:
is contained in the skull
Why do humans have a strong impact on the fast carbon cycle?
Answers
Burning fossil fuels or cement has relatively little of an influence on humans in terms of producing carbon dioxide. The general people has been duped into believing we are a major factor in the greenhouse effect.
The biggest misconception regarding the movement for people to emit no net amount of CO2 is that natural supplies of this plant nourishment dwarf our emissions. This indicates that even if all people disappeared overnight, atmospheric CO2 levels would not significantly drop.
The statistics on the steady increase in CO2 throughout the heaviest periods of the global lockdown, which significantly restricted any human-sourced emissions, will give you a decent idea of this.
As for the so-called greenhouse gases, CO2 naturally occurs in water vapor, which makes up more than three times as much of the GHG as CO2. This indicates that the human component of the GHG is 0.6 percent.
When you take into account how little human emissions are in the grand scheme of things, you have to stop and wonder if any efforts you make to lower your emissions are in vain.
Thank you,
Eddie
When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the
upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the
trachea.
Which structures are part of the upper respiratory system? Select three options.
the larynx
0
the bronchus
the alveoli
the lungs
the pharynx
The nose
Answers
Answer:
its below
Explanation:
The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx)
Jennifer higdon’s blue cathedral opens with bell-like timbres, a style known as what?
Answers
Jennifer Higdon's blue cathedral was inspired by the grief over her brother's death. Neo-Romanticism incorporates the lush harmonic language of the Romantic era.
Jennifer Higdon's blue cathedral was inspired by the grief over her brother's death. Jennifer Higdon's blue cathedral is written for a small orchestra.
Of playing in the university orchestra, she has said Because I came to classical music very differently than most people, the newer stuff had more appeal for me than the older. While at Bowling Green, she met Robert Spano, who was teaching a conducting course there and who became one of the champions of Higdon's.
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Which complement pathway involves antibodies despite being part of the innate immune system?
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The classical pathway is complement pathway involves antibodies despite being part of the innate immune system.
Complement system represents a major part of the innate immunity. It is a cascade of soluble proteins and membrane expressed receptors and regulators, which operates in plasma, in tissues, on cell surface, and even within the cell.
The classical pathway, which is triggered directly by pathogen or indirectly by antibody binding to the pathogen surface the MB-lectin pathway and the alternative pathway, which also provides an amplification loop for the other two pathways. As part of the innate immune system, complement acts immediately to start the process of removal and resolution of the problem. Complement works with the inflammatory cells of the innate immune system and those of adaptive or acquired immunity.
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How does biological catalysts operate? Discuss an example of a mechanism that can modulate the chemical reaction to go up or down depending on the prevailing conditions.
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Enzymes, which are proteins that catalyst every chemical process that occurs in a live cell of any animal, are referred to as "biocatalysts."
Enzymes speed up the rate of chemical processes by lowering the activation energy but at a higher turnover rate than inorganic catalysts. Many biocatalysts function similarly to the one shown in the figure below. By momentarily connecting with the reactants, the biocatalyst combines them. As a result, the reactants can react with each other more readily and quickly as a result.
Conversion of glucose into ethyl alcohol is one such example. Ethyl alcohol and carbon dioxide are produced when the enzyme zymase breaks down glucose.
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Which type(s) of joint(s) lack(s) a joint cavity and is(are) held together by a fibrous connective tissue?
a) 1. fibrous joints;
b) 2. cartilaginous joints;
c) 3. synovial joints.
e) 1 only
Answers
Fibrous joints lack a synovial joint cavity, have the articulating bones held together by fibrous connective tissue, and permit little or no movement.
Functional classification of joints depends on how the joint functions and the degree of movement they allow. Lack a synovial cavity are held together by fibrous connective tissue. The bones of fibrous joints are held together by fibrous connective tissue .Three types of fibrous joints are sutures, syndesmoses, and gomphoses. In fibrous joints the articulating parts are separated by white connective tissue (collagen) fibers, which pass from one part to the other. The only examples of these joints in the human body are the articulations between the roots of the teeth and their sockets (alveoli) in the maxillae and mandible.
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Name the four layers of the digestive tract beginning from the lumen of the digestive tract.
Answers
The four layers of the digestive tract from superficial to deep are the mucosa (adjacent to the lumen), submucosa, muscularis externa, and serosa.
The digestive tract:The innermost tunic of the wall is known as the mucosa or mucous membrane layer. The digestive tract's lumen is lined with it. The mucosa is made up of epithelium, a layer of lamina propria, a loose layer of connective tissue, and the muscularis mucosa, a thin layer of smooth muscle. The mucosa in some areas produces folds that enhance its surface area. The mucosa's specific cells secrete hormones, digestive enzymes, and mucus. Other glands' ducts travel to the lumen through the mucosa.
The mucosa is surrounded by a substantial layer of loose connective tissue known as the submucosa. Blood arteries, lymphatic vessels, and neurons are also present in this stratum. This layer might contain glands.
An inner circular layer and an outside longitudinal layer make up the two layers of the smooth muscle that moves the digestive tract. The two muscle layers are separated by the myenteric plexus.
The adventitia is a connective tissue that makes up the digestive tract's outermost layer above the diaphragm. It is referred to as serosa below the diaphragm.
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what was Mendels Pea experiment? summary for notes
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During binary fission in a bacterial cell, a base pair is changed from adenine to cytosine. what has just occurred?
Answers
During binary fission in a bacterial cell, a base pair is changed from adenine to cytosine due to a random mutation.
Binary fission is a type of asexual reproduction through which a bacteria divides and its body is separated into two new bodies.
If during binary fission in a bacterial cell, a base pair is changed from adenine to cytosine, it is because of a random mutation. A mutation is a genetic alteration or a change in the DNA sequence which results in the generation of a variant. Mutations in the DNA sequence which occur without any specific pattern is known as a random mutation.
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Multiple arteries joined in order to serve a single capillary network are called:______.
Answers
Answer:
they are called collaterals
The origin of the frontalis muscle is the:________
a. frontal bone.
b. mandible.
c. occipital bone.
d. forehead.
e. epicranial aponeurosis.
Answers
The origin of the frontal bone is muscle is the forehead. Thus, the option D is the correct option.
What is hyoid bone?The hyoid bone has been considered as the part of the hyo-gloso-pharyngeal complex at the base of the lower jaw and at the level of the third and the fourth cervical vertebrae. The thirteen muscles has been inserted into it, the ones above are the suprahyoids that are responsible for lowering the jaw. The hyoid bone has been involved in the phonation, as well as chewing and swallowing.
Parietal bones has been paired the structure that form the roof and the side of the cranium.The parietal bones has been articulated with each other and they form suture. It articulates occipital bone posteriorly,and anteriorly with the frontal bone which form a suture called as coronal suture.
Inferiorly the parietal bone has been articulated with the sphenoid and temporal bone. Zygomatic bone has irregular shaped and the paired structure that the articulates with maxilla as well as temporal bone, sphenoid bone,and the frontal bone.
Therefore, The origin of the frontal bone is muscle is the forehead. Thus, the option D is the correct option.
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Why must the electron transport chain proteins and molecules be embedded in a membrane?
Answers
Answer:
because that way protons can be compartmentalized and form a gradient.
When the resident microbiota prevents the establishment of a pathogen, it is called _______.
Answers
Microbial antagonism is the inhibition of pathogens growth by antagonist microbiota. When the resident microbiota prevents the establishment of a pathogen, it is called Microbial antagonism.
What are antagonist microbiota?
Antagonist microbiota are the organisms, like bacteria or fungi, capable of acting as a biological control to avoid other pathogenic agents' establishment.
These organisms share three characteristics,
a) capability to quickly colonize a new surface and effectively persist on it
b) better ability than the pathogen to get nutrients
c) the capability of surviving under different environmental conditions.
These antagonists are
genetically stable, their nutritious requirements are not demanding, they are capable of surviving under adverse environmental conditions, they have a high reproductive capability, and are not pathogenic to their host.
The mechanisms these antagonists use to inhibit the pathogen growth and establishment are among others, antibiosis, competition for resources, lytic enzyme production, and parasitism.
When the resident microbiota prevents the establishment of a pathogen, it is called _microbial antagonism_.
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What would increase the amount of oxygen unloaded by hemoglobin into peripheral tissues?
Answers
Decreased pH would increase the amount of oxygen unloaded by hemoglobin into peripheral tissues.
What is hemoglobin?The iron-containing oxygen-transporting metalloprotein known as hemoglobin.The abbreviations Hb or Hgb, is found in the red blood cells of almost all vertebrates as well as some invertebrate organs. The oxygen from the respiratory organs is transported to the rest of the body by hemoglobin in the blood.Iron deficiency anemia is characterized by low hemoglobin that is brought on by low iron levels. Low hemoglobin is most frequently caused by a diet that is inadequate in iron. Low hemoglobin levels can cause headaches, exhaustion, and pale complexion. Surgery, iron therapy, and iron supplementation are all options for treating low hemoglobin.Red blood cells include the protein hemoglobin, which transports oxygen to your body's organs and tissues and carbon dioxide from those tissues back to your lungs. A low red blood cell count if a hemoglobin test finds that your hemoglobin level is lower than normal (anemia).Learn more about hemoglobin here:
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