Part a label the structures of an animal cell. drag the appropriate labels to their respective targets.
Animal cells are eukaryotic cells protected by a semipermeable membrane, and composed of several organelles immersed in the cytosol. Genetic material is in the nucleus.
What is an animal cell?These are eukaryotic cells. They carry their genetic material in the nucleus and mitochondria. Their organelles are located in the cytosol, and the whole cell content is protected by a flexible semipermeable cell membrane.
Among the organelles, we can mention,
Vesicles and vacuoles whose function is to store water, ions, and waste intracellular substances. Mitochondria in charge of energy productionThe endoplasmatic reticulum and Golgi complex are involved in protein synthesis, maturation, and transport.There are also structures like microtubules and actin filaments that provide structure, shape the cell, and are involved in intracellular transport.
Animal cells also have pigments that provide color to tissues like the hair, the skin, or the eyes.
Depending on the cells and their function, we can also find cilia, flagella, or microvillus on their surface. Microvilli are fingerlike projections.
Now, we can laber each structure of the animal cell. You will find the image in the attached files.
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Answer:
Explanation:this is the answer guide
A mutant strain of e. coli produces βâgalactosidase in the presence and in the absence of lactose. where in the operon might the mutation in this strain occur, and why?
The mutation might occur in the operator region, thereby altering its ability to bind the repressor of Escherichia coli.
What is the operator region?The operator region is a nucleotide DNA sequence that plays regulatory functions capable of binding both activators and inhibitors.
The operator region is located in the operon, which is a cluster/group of different genes modulated by only one promoter region.
In conclusion, the mutation might occur in the operator region, thereby altering its ability to bind the repressor of Escherichia coli.
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When using the netcat command to test a network port, which option will provide output that is not useful for scripting, but is useful for the human eye?
When using the netcat command to test a network port, the option that will provide output that is not useful for scripting, but is useful for the human eye is The "-v" flag,
This netcat command is necessary for human understanding as it stands for verbose and is used to test network ports.
However, it should be noted that it is not useful for scripting.
What is a Program Command?This refers to the set of lines that are translated into machine-readable format and used to give instructions to the computer.
Hence, we can see that when using the netcat command to test a network port, the option that will provide output that is not useful for scripting, but is useful for the human eye is The "-v" flag, which stands for verbose
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Why did Eric Kandel get the Nobel Prize for poking sea slugs?
Aplysia cortex is exceptionally easy to study
He characterized the whole molecular genome of the aplysia, which proved invaluable for making it a model organism
He discovered the physical underpinnings of a behavior
Aplysia feature the strongest neurons in the animal kingdom
Eric Kandel get the Nobel Prize for poking sea slugs because Aplysia cortex is exceptionally easy to study.
Kandel's work with Aplysia, or more particularly, his study on the biological principles of memory preservation, earned him the 2000 Nobel Prize in Physiology or Medicine.Because of its basic neural system, which allows individual sensory neurons (which detect changes) to only create synapses with single motor neurons, the Aplysia sea slug's reflexes are frequently employed to study memory (which control muscles).The biggest benefit of Aplysia is its enormous neurons, which make it easier to conduct studies on physiology, biochemistry, and genomics at the level of individual cells and their compartments.Because Aplysia has a basic neural system with individual sensory neurons (which only sense changes) it is frequently used to investigate memory.learn more about Aplysia here: https://brainly.com/question/14441890
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Which muscles are typically underactive with knee valgus during the overhead squat?
Gluteus maximus and medius muscles are typically underactive with knee valgus during the overhead squat.
The gluteus maximus is the maximum superficial gluteal muscle that paperwork the prominence of the gluteal place. The gluteus maximus works with the semitendinosus and semimembranosus muscle groups to increase the hip.
The gluteus maximus is the predominant extensor muscle of the hip. it's far the most important and outermost of the 3 gluteal muscular tissues and makes up a big part of the form and appearance of every factor of the hips. it is the single biggest muscle in the human frame.
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______ are geologic considerations when identifying physically safe places for human habitation.
The strength of the underlying geology, steepness of hillsides and faults in the Earth's crust which can potentially cause earthquakes are the geologic considerations during the identification of physically safe places for human habitation.
Geology basically deals with the study of the Earth and it finds a vital application in understanding the physical features of an area before it is inhabited by humans.
Human habitation on steep hillsides can be risky due to potential landslides and soil erosion which may occur due to rainfall or by rivers. It is also important to judge the strength of the underlying geology to ensure stability to the structures and buildings made to support habitation. The faults in the Earth's crust and the movement of the tectonic plates are responsible for causing Earthquakes. Seismic activity can lead to swaying of the structures and result in their instability which happens to risk human lives.
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After being shot in the head in Iraq, what type of glial cells began to restore the barrier between Brandon's brain and blood
The type of glial cells that began to restore the barrier between Brandon's brain and blood is the astrocytes.
What are glial cells?The glial cells are does cells that are non-neuronal cells found within the nervous system which helps to provides physical and metabolic support to neurons.
An example of glial cells is the astrocytes which are the building blocks of the brain neurotransmitters that aids in brain injury recovery.
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Do you think microwave ovens, electromagnetic fields, and ultrasound, as energy transmitters, would induce cellular injury?
No these do not emit ionizing radiation and would have a low likelihood of resulting in cellular injury.
Are microwaves harmful electromagnetic waves?Non-ionizing radiation includes radio waves, microwaves, and visible light. UV light is the only non-ionizing radiation that can cause cancer. In conclusion, microwaves are safe to use and do not harm human health in any way, including the development of cancer. In order to heat the water in meals, microwave ovens use electromagnetic waves at a frequency of 2.45 GHz.
Injuries caused by hot containers, overheated food, or exploding liquids account for the majority of microwave-related injuries. Most injuries are not caused by radiation. Microwave radiation has been linked to numerous negative effects on the central nervous system, including sleep difficulties, learning disabilities, and memory loss, according to a significant body of research.
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While the nature of adenosine action on central circuits is not well understood, adenosine is thought to have an inhibitory or relaxing effect based on which observation?
Adenosine is thought to have an inhibitory or relaxing effect based on the consequences of xanthine (e.g., caffeine) blockade of adenosine receptors.
The manner that xanthine (for example, caffeine) interacts with the adenosine receptors in the neuronal membrane is largely responsible for its stimulant effects. It is a neuromodulator of the central nervous system with particular receptors. Thus, adenosine promotes sleep and widens blood arteries, likely to ensure enough oxygenation while sleeping.
As an antagonist of the adenosine receptor, caffeine. In other words, it binds to the same receptors but does not inhibit neuronal activity. As a result, the natural "braking" effect of adenosine is less effective and brain activity increases.
Therefore, Adenosine is thought to have an inhibitory or relaxing effect based on the consequences of xanthine (e.g., caffeine) blockade of adenosine receptors.
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Use what you know about the effect of heat on gases to explain why, the gases came out of the leaf when it was put into warm water.
Answer:This is due to the fact that the air in the leaf's air spaces expands and escapes through the lead epidermis's stomata.
Explanation:
This happens because when leaf are submerged it is using light to continue process of photosynthesis, this process includes the release of oxygen that we see in bubble format .
What is photosynthesis?When the leaf is put in warm water it is using light to continue the process of photosynthesis. Part of this process is to let oxygen out of the leaves. It is this oxygen that you are seeing as bubbles in the water.
Which part of the leaf the gas came from?The only way for gases to diffuse in and out of the leaf is though small openings on the underside of the leaf, the stomata.
Therefore, it can be understood that this happens because when leaf are submerged it is using light to continue process of photosynthesis, this process includes the release of oxygen that we see in bubble format .
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It is said that "animals do not have plastids, but they depend on them". explain.
Answer: because this has a relation with the food chain of lower levels like herbivores.
Explanation:
as you know plastids are the main source of food production in plants. As they meet the food requirements in plants but animals don't have it so the lower levels like deer who eat grass depend on these plastids of plants to fulfill the need for food and nutrients as animals cant process or made their food. and carnivores fed on these herbivores for their food consumption. so you can indirectly relate this statement to the food chain. and this is how animals depend on plastids found in plants.
ellow peas are dominant over green peas. Round peas are dominant wrinkled peas. Predict the outcome between two plants that are homozygous for BOTH traits.
You cannot be sure if the plant is homozygous or heterozygous as the data set is too small: by random chance, all three plants might have acquired only the dominant gene even if the recessive one is present.
GeneA gene is the fundamental structural and functional component of heredity. The DNA that makes up genes. In some cases, genes serve as blueprints for the creation of proteins. In contrast, a large number of genes do not encode proteins. A few hundred DNA bases to more than 2 million bases make up the majority of human genes. Humans are thought to have between 20,000 and 25,000 genes, according to the Human Genome Project, a multinational effort to decipher the human genome's sequence and catalog its genes. Every gene is present in two copies, one from each parent, in every human being. Only a small subset of genes differ somewhat between individuals; the majority of genes are the same in all persons.
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The specific place of an organism in an ecosystem is called its
Answer:
The specific place where an organism lives is called its habitat.
The cell organelle that digests molecules, old organelles, and foreign substances is the ____
The cell organelle that digests molecules, old organelles, and foreign substances is the Lysosome. The main constituent of lysosomes is hydrolase enzymes. The hydrolase enzymes of the lysosome, a membrane-bound vesicle, break down aged organelles and proteins into smaller molecules like amino acids.
Lysosomal hydrolytic enzymes are also helpful in destroying invading pathogens. Upon any bacterial/fungal/viral infection, the cell engulfs the pathogenic particle in a double membrane-bound vesicle called a phagosome, via phagocytosis. Phagosomes get fused with lysosome and hydrolytic enzymes help in the clearance of the pathogen.
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How The Earth Was Made: Video viewing guide1) According to Dr. Durda, where did the water that now covers our oceans come from?2) what were the two major gases in Earth's atmosphere 4 billion years ago?
Billions years ago ocean is formed , water is remained a gas until the earth cooled 212 degree Fahrenheit below.
According to Dr. Durda that water that comes from earth cycles from the oceans ,in earth water cycle is evaporates from the surface to the atmosphere then form clouds, then fall onto the land as a rain, after rain fall it travels to rivers, lakes and underground .
The two major gases in earth's atmosphere 4 billion year ago the most abundant naturally occcuring gas is oxygen 21% which is second most abundant gas in mature and nitrogen 78% .
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Fish in a marine environment must maintain a relatively constant ion concentration in their tissues and blood. How do the chloride cells in the gills aid fish in the removal of excess ions?
The chloride cells actively remove ions from the body and water follows by osmosis.
The chloride cells create a countercurrent system where ions are lost from the body and water is absorbed to dilute other ions (NaCl). Marine fishes can excrete salt by clusters of special cells (chloride cells) in the gills.
In euryhaline bony fish, gills usually secrete extra chlorine to maintain a constant plasma chlorine concentration in environments of different salinity. Fishes are exposed to major osmotic challenges in freshwater and marine environments.
Osmosis is the diffusion of water across a membrane in response to osmotic pressure caused by an imbalance of molecules on either side of the membrane.
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Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of?
Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of Water pollution.
Water pollution is the contamination of water bodies by substances like Cyanide, raw sewage, petroleum from shipping accidents, and detergents This makes water unfit for drinking, cooking, cleaning, and other purposes. It may provide an environment suitable for growth of bacteria, algae bloom and other parasites which even destroys the life of animals residing in the water body like fishes.
All other forms of pollution eventually make their way to water and disturb the pH of water. Biochemical Oxygen demand (BOD) is the attribute which measures the pollution in water body at surface level.
Hence,Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of Water pollution.
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The most significant threat to biodiversity today is ________________. Group of answer choices the killing of competing species the elimination of habitat the introduction of foreign species. the reduction of sperm counts. the acidification of the oceans.
Answer:
B.) the elimination of habitat
Explanation:
While all of the answer choices could decrease biodiversity, the most prevalent issue comes from habitat loss as a result of urbanization and the overuse of natural resources.
What evidence suggests that the development of schizophrenic disorders is not entirely explained by genetics?
None of the twin studies have found a concordance rate that even approaches 100 percent. This evidence suggests that the development of schizophrenic disorders is not entirely explained by genetics
Identical twins were studied for relation of schizophrenia to genetics. There is a less than 0.5 association between identical twins with identical genomes and schizophrenia. As a result, it can be concluded that schizophrenia is not solely a genetic disorder.Although schizophrenia frequently runs in families, no one gene is known to be the cause. It's more likely that particular gene combinations increase a person's susceptibility to the illness. Nevertheless, schizophrenia is not a guarantee if you have these genes.The possibility that a person may acquire the illness is influenced by environmental risk factors such as pregnancy and birth problems, childhood trauma, migration, social isolation, urbanization, and substance misuse, operating alone and in combination throughout time at various levels.learn more about schizophrenic disorders here:https://brainly.com/question/7201954
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____ are the regions where growth is initiated by the proliferation of cells.
Answer:
1. I’m not sure if the question is to finish the sentence. But I will give you the answer to the question if thats what you are asking.
Explanation:
Proliferation is a physiological process of cell division that occurs in almost all tissues, resulting in an increase of the number of cells. Mitosis is the main way for eukaryotes to divide cells, such as multicellular organisms in a mitotic way to increase the number of somatic cells.
The layer of the arteriole wall that can contains smooth muscle and can produce vasoconstriction is the
Tunica media is the layer of the arteriole wall that can contain smooth muscle and can produce vasoconstriction.
What is tunica media?The smooth (involuntary) muscle cells and elastic fibers that make up the tunica medium, or middle coat, are organized in roughly spiral layers. The tough tunica adventitia, also known as the outer coat, is a layer that serves as support. It is made primarily of collagen fibers.
The arterial wall's ability to support mechanical loads is also impacted by its elasticity. The etiology of atherosclerotic lesions is significantly influenced by the media's metabolic condition. Vascular SMCs, elastin, and collagen fibers are grouped in a highly ordered manner in the tunica media.
Muscular arteries typically have diameters between 0.1 and 10 millimeters. Muscular arteries are able to play a significant part in vasoconstriction due to their thick tunica media.
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A(n) ______ cell contains two sets of chromosomes, one set of chromosomes inherited from each parent.
A diploid cell contains two sets of chromosomes, one set of chromosomes inherited from each parent.
The term diploid means to the presence of two complete sets of chromosomes in an organism's cells, with each parent contributing a chromosome to each pair.
Sexually reproducing organisms are diploid.
We humans are diploid and most of our body cells (somatic cells) contain 23 pair of chromosomes. In each one of us there are total 46 total chromosomes. Half come from the mother, the other half come from the father. The two of the chromosomes X and Y determine your gender as male or female by birth.
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Select the correct answer from each drop-down menu. rna interference is a mechanism of eukaryotic gene regulation. in this mechanism, the enzyme "dicer" cuts dsrna into smaller fragments called , which form a complex with risc and degrade specific .
The dicer enzyme processes dsRNA and forms siRNAs, which suppress the expression of target genes by cutting mRNA. 1) siRNA 2) RNA.
What are siRNA fragments?
siRNA means small interfering RNA. This is a silencing RNA molecule involved in the RNA interference mechanism, intervening in the expression of a specific gene.
siRNAs are complementary double-stranded RNA molecules composed of about 20-21 nucleotides. siRNA originates from a long double-stranded RNA (dsRNA).
The dicer enzyme cuts dsRNA molecules and produces siRNA. siRNAs suppress the expression of target genes when cutting messenger RNA.
siRNAs suppress the expression of target genes by cutting the complementary messenger RNA (mRNA) into two halves. This is accomplished by the interaction of the siRNA with the RISC complex (RNA-induced silencing complex).
The two mRNA halves are later degraded by the cellular machinery, leading to the suppression of the gene expression.
siRNAs also participate in other pathways related to RNAi, such as in antiviral defense or in the chromatin structure organization.
RNA interference is a mechanism of eukaryotic gene regulation. In this mechanism, the enzyme dicer cuts dsRNA into smaller fragments called (1) siRNA, which form a complex with RISC and degrade specific (2) RNA.
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A simple protein that makes up approximately 58% of the plasma proteins. Many act as transport molecules.
Albumin
These are the most abundant and form about 60% of all plasma proteins. They contribute to osmotic pressure, help to control water balance and are involved in the transport of substances in blood including drugs.
What is Plasma protein ?Plasma protein is the collective term for the proteins present in the blood.
Plasma proteins fall into several different groups and have numerous functions, including maintaining osmotic pressure, and transporting lipids, hormones, vitamins, and minerals.Immunoglobulins help fight infection and various other small amounts of enzymes, hormones, and vitamins.Learn more about Plasma protein here:
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The triceps brachii muscle attaches to the olecranon process of the ulna crossing the posterior side of the elbow joint. that will allow the triceps to be a(n) __________ of the elbow joint.
The triceps brachii muscle attaches to the olecranon process of the ulna crossing the posterior side of the elbow joint. that will allow the triceps to be an Extensor of the elbow joint.
Directly affected is the common extensor tendon, which arises from the lateral epicondyle of the elbow. The common extensor tendon is made up of the extensor carpi radialis brevis (ECRB) and longus, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris.The main elbow flexors are the biceps brachii, brachialis, and brachioradialis. The main elbow extensor is the triceps brachii. Although it is also believed that the anconeus contributes to elbow extension.The proximal articular region of the ulna is called the olecranon. It creates the larger sigmoid notch, which articulates with the humerus to allow for elbow flexion and extension, together with the coronoid process.The main point of attachment for the forearm's extensor muscles is the common extensor tendon. This promotes forearm supination and allows finger extension.learn more about Olecranon process: https://brainly.com/question/5986282
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Melanin Group of answer choices occurs at high rates in individuals with light skin tone. is advantageous because it provides protection from solar radiation. develops more with age. is a chemical that decreases the possibility of a tan.
Melanin is advantageous because it provides protection from solar radiation.
The coloring of the skin and hair is caused by melanin. Additionally, it shields the skin from the sun. The cells known as melanocytes create the pigment melanin. The skin, hair, and eyes are just a few body regions where these cells can be found.Defense against UV radiation. Melanin shields your skin from damaging rays like UVA, UVB, UVC, and blue light by absorbing them.Safety against reactive oxygen species (ROS). The cell processes in your body produce reactive oxygen species as byproducts.In addition to having a higher risk of developing skin cancer, redheads and blondes have less melanin in their skin and hair, which actually intensifies the harmful effects of ultraviolet (UV) radiation.learn more about Melanin here: https://brainly.com/question/11081398
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What are anatomical modifiers? why can't just rt or lt be used for these modifiers? give an example
Anatomical modifiers identify the region or component of the body where the procedure is carried out and aid in the swift, precise adjudication of claims. For procedures carried out on paired structures, such as the eyes, lungs, arms, breasts, knees, etc.,
The modifiers LT and RT may also be used to identify uncommon situations in which a physician conducts a procedure that CPT® classifies as bilaterally but unilaterally. For instance, 58953 A bilateral procedure is, by definition, bilateral salpingo-oophorectomy with omentectomy, total abdominal hysterectomy, and radical dissection for debulking.
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Hiremagalur B, Sabban EL. Nicotine elicits changes in expression of adrenal catecholamine biosynthetic enzymes, neuropeptide Y and immediate early genes by injection but not continuous administration. Molecular brain research. 1995 Aug 1;32(1):109-15.
Nicotine, a key pharmacologically active component of tobacco smoke, is often regarded as one of the reasons responsible for cigarette smoking's negative repercussions. Nicotine stimulates the sympathoadrenal system, increasing catecholamine synthesis and release into the bloodstream.
In this work, we show that nicotine injections, both single and recurrent, enhance the expression of tyrosine hydroxylase (TH), a rate-limiting enzyme in the catecholamine biosynthesis pathway. In addition, these treatments influenced the expression of dopamine-hydroxylase (DBH) and neuropeptide Y (NPY) in rat adrenals.
Effects of Nicotine:Nicotine's influence on various transcription factors in the adrenal medulla was investigated. Injection nicotine treatment boosted CREB phosphorylation and activated c-Fos protein without altering members of the jun family. In contrast to the injection results, continuous infusion via osmotic pumps had no effect on any of these parameters.
These findings suggest that nicotine delivery modality influences the activation of many transcription factors and the production of TH, DBH, and NPY.
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Which of the following is not a characteristic that defines life? Living things
A.
grow and develop.
B.
are made up of cells.
C.
do not require energy.
D.
maintain homeostasis.
Answer:
Option c is the right answer
Explanation:
Which molecule allows for crossbridge reformation by breaking the myosin and actin crossbridge?
a) acetylcholinesterase
b) acetylcholine
c) calcium
d) atp
ATP allows for crossbridge reformation by breaking the myosin and actin crossbridge. So the correct answer is d) atp
When ATP is bound to myosin head, and the myosin, cross bridges between actin and myosin are broken up, releasing ADP and P1, and the muscle returns to its relaxed condition. The myosin globular head, which extends from a myosin filament in muscle, is held to momentarily bind to a nearby actin filament and bring it into the A band of a sarcomere between the myosin filaments to form a cross bridge.
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