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MEIOSIS I
TYPE
Homologous
chromosomes
pair up forming
a tetrad
FIR
Spindle fibers
attach to
chromosomes
KX
88
Name and match the Description of
the Phases of Meiosis I...
& Cytokinesis
DNA
Replication
occurs
Two new nuclear
membranes form.
Two new cells are
formed.
Answers
Homologous chromosomes link up to create tetrads during the prophase stage of the cell cycle. Synapsis is another name for the development of tetrads. Tetrads play a crucial role in the process of crossing over, which involves the exchange of DNA segments across homologous chromosomes.
What is phase of meiosis does a tetrad form?The two processes of cell division are meiosis and mitosis. Gametes, such as egg and sperm cells, are created during the cell division process known as meiosis. There are haploid gametes. This indicates that there is just one set of chromosomes present in humans as opposed to two. Because it enables the sexual reproduction necessary for genotype recombination, the generation of gametes is crucial. Therefore, sexual reproduction can boost genetic diversity, which can improve an organism's chances of surviving to produce offspring. Variable fitness brought on by genetic variety can increase a species' chances of surviving and reproducing in the future.Let's examine the meiosis process itself now that we have a clearer understanding of it on a wider scale:An initial parent cell is used. There are two copies of each chromosome in this cell, as you can see. An organism's chromosomes are genetic material bundles that contain genetic information for various parts of the body. Two chromosomes, one from each set, that have the same genetic code are said to be homologous. The chromosomes in question are homologous. In addition to having genes that code for the same things, they are roughly the same size and form. Although they are not the same. Various alleles for particular genes may be present.To Learn more About tetrads refer To:
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Related Questions
caught in or between hazards are related with excavations t or f
Answers
False - caught in or between hazards are associated with excavations.
The hazards deemed to be the most dangerous are caught in or between hazards.
Important body parts are highly vulnerable to being cut or completely disabled in 'caught in or-between' hazards if proper safety measures are not used.In most cases, the only treatment available after an accident is amputation.As a result, it is absolutely necessary to plan the work ahead of time, to remain alert and attentive throughout the work process, and to implement all necessary safety measures."Caught in-between" hazards kill workers in a variety of ways. These include: cave-ins and other excavation hazards; body parts pulled into unguarded machinery; standing within the swing radius of cranes and other construction equipment; and being caught between equipment and fixed objects.
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Which process allows glycolysis to continue in the absence of oxygen?
A. Chemosynthesis
B. Photosystem 1
C. Cellular respiration
D. Fermentation
Answers
D. Fermentation, Glycolysis can proceed in the lack of oxygen thanks to fermentation.Fermentation is a crucial technique for producing ATP without the use of oxygen.
Inside the absence of oxygen, glycolysis continues through what process?Pyruvate will go through a procedure known fermentation when oxygen is absent.The NADH + H+ produced glycolysis would be recirculated to NAD+ during fermentation, allowing glycolysis to proceed.NAD+ is oxidized during glycolysis to create NADH + H+.
What is the name of oxygen-free fermentation?Anaerobic respiration is the term for respiration that occurs without oxygen.Another name for it is fermentation.Anaerobically breaking down glucose in this mechanism results in the production of two ATP.
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When were enzymes first isolated?
Answers
Answer:
1833
Explanation:
it was in 1833 by Anselme payen
Sumner found that urease crystals consisted entirely of protein, and he postulated that all enzymes are proteins. In the absence of other examples, this idea remained controversial for some time.
competitive inhibition vs noncompetitive inhibition
Answers
Competitive inhibitors compete for the binding site in protein with the actual ligand, whereas non-competitive inhibitors do not.
A competitive inhibitor competes with the substrate for binding at the enzyme's active site. A noncompetitive inhibitor binds at a site other than the active site.
Competitive inhibition occurs when molecules that are very similar to the substrate molecules bind to the active site and prevent the actual substrate from binding. Penicillin, for example, is a competitive inhibitor that inhibits the active site of an enzyme used by many bacteria to build their cell... In repression.
Noncompetitive inhibition, a type of allosteric regulation, is a type of enzyme inhibition in which an inhibitor binds to an allosteric site, resulting in decreased enzyme efficacy. An allosteric site is simply one that differs from the active site—the location where the substrate binds.
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what do the sign and magnitude of the δg of a reaction tell us about the speed of the reaction?
Answers
The amplitude and sign both influence the reaction's quickness and spontaneity. The size of G determines how quickly a response happens; the sign does not matter.
Which part of the equation ΔG δh tδs tells you if a process is spontaneous?As indicated, the response is spontaneous if G° is negative, which it is. The sign of G° is dependent on the magnitude differences between the H° and TS° terms because S° and H° for this reaction have the same sign.Exergonic reactions are those with a negative G that liberate free energy. Energy is Exiting the System, which is a helpful mnemonic for the phrase "exergonic." The beginning state, the reactants, contain more free energy than the final state, the products, when the G is negative.A reaction's rate can be influenced by any one of the following five general properties:How much of each reactant is present. The rate increases with increasing concentration.Temperature, the physical condition of the reactants, the presence (and concentration/physical form) of a catalyst (or inhibitor), and light are all factors in the reaction.To Learn more About spontaneity refer to:
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5 animals or more, mammals, adorable
Answers
Answer:
5 adorable mammals,
1. Dogs & Cats
2. Horses
3. Whales
4. Ferret
5. Cows
Mammals are a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young.
a cell contain 98% water in its cytoplasm is place in a 2% salt solution. it should
Answers
Answer:
• The cell would neither lose nor gain water
Explanation:
The condition does not permit diffusion. The concentration of salt in the internal environment and the surrounding environment is in equilibrium.
What value of n makes the number sentence, n times 9 = 0 true Answers ⬇️ below
-9
0
1
9
Answers
9 x 0 = 0
The rest of these amount to 9, 81 and -81
hormones are released into the _______ space surrounding endocrine cells and then diffuse into the bloodstream.
Answers
Hormones are released into the extracellular space space surrounding endocrine cells and then diffuse into the bloodstream.
Hormones are chemical messengers that are produced by endocrine cells and released into the bloodstream to regulate various physiological processes in the body.
When an endocrine cell is stimulated, it releases hormones into the extracellular space surrounding it. These hormones then diffuse into the bloodstream, where they can travel to target cells and tissues throughout the body. The hormones bind to specific receptors on the surface of target cells, triggering a response.
The endocrine cells are found in various endocrine glands such as the pituitary gland, thyroid gland, adrenal gland, pancreas and gonads. Each gland produces specific hormones that regulate a variety of physiological processes, such as growth and development, metabolism, and reproduction. Hormones also play a role in maintaining homeostasis, which is the balance of internal conditions in the body.
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the gastrointestinal tract is _____________ft long
Answers
The gastrointestinal tract is 18 ft long.
The digestive system's path from the mouth to the anus is known as the gastrointestinal tract (GI tract, digestive tract, alimentary canal). All of the major digestive systems organs, such as the esophagus, stomach, and intestines, are located inside the GI tract in both humans and other animals.
The digestive system is made up of the liver, pancreas, and gallbladder as well as the gastrointestinal tract, commonly known as the GI tract or digestive tract. From the mouth to the anus, the GI tract is made up of several hollow organs connected by a protracted, twisted tube.
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1.08 Lab: Natural Selection
Biological evolution is the process by which populations of organisms change over time. In this lab, you were able to observe how a population of peppered moths can change based on their environmental surroundings. Why do these types of changes/adaptations occur?
Answers
Answer: These types of changes/adaptations occur in order for the peppered moths to camouflage which gives them a higher chance of surviving and producing offspring.
Explanation: When the environment changed, due to pollution, the color of the moth population shifted because light-colored moths became easier to see so they were eaten more often. The darker moths were better camouflaged and more likely to survive and produce offspring. Organisms that survive have a better chance of reproducing so the population continues to grow.
Which of the following methods of plant reproduction ensures the highest levels of genetic diversity?
A. layering
B. sexual reproduction
C. asexual reproduction
D. grafting
Answers
Hope this helps you!
Groundwater can be _________ by landfills and septic tanks.
emptied
drained
contaminated
filled
Answers
Answer:
contaminated
Explanation:
Groundwater can be contimated by landfills and septic tanks
Which observation suggests that eukaryotes may share a more recent common ancestor with bacteria than with archaea?Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes.
Answers
Many yeast metabolism related genes resemble bacterial genes more so than archaeal genes.
Do both bacteria and archaea share any genes in common?
However, researchers later found that bacteria and archaea differ significantly in terms of molecules. Genetic studies have also shown that Domains Archaea and Eukarya are more closely related each other than to Genus Bacillus in terms of phylogeny.
What distinguishes bacterial from archaeal cells?
In contrast to archaeal cell walls, which are made of polysaccharides, bacteria cell walls are made of peptidoglycan, a mixture of proteins and carbohydrates sugars. Their cell walls' composition is also different from that of eukaryotic cell walls seen in fungi, insects, or plants cellulose chitin.
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Complete question
Which observation suggests that eukaryotes may share a more recent common ancestor with bacteria than with archaea?
a. behavioral traits
b. the tree that represents the fewest evolutionary changes, in either DNA sequences or morphology
c. gross morphological traits
d. Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes.
the high speed signals that pass along the axons of nerve cells ia the function of ?
Answers
The high speed signals that pass along the axons of nerve cells is the function of A. Motor neuron; B. Sensory neuron; C. Relay neuron.
An electrical impulse in a neuron moves from the dendritic end to the axonal end. Chemicals released from one neuron's axonal end travel across the synapse and cause an electrical impulse of a similar nature to be produced in the dendrite of another neuron. A neuron transmits electrical impulses to muscle and gland cells in addition to other neurons.
A nerve impulse is a form of intercellular communication used by neurons. A nerve impulse, also known as an action potential, is primarily produced by electrical signals travelling along dendrites. Ions entering and exiting the cell cause the action potential.
From the dendritic end to the axonal end, a nerve impulse moves. A comparable electrical impulse is produced in a dendrite of another neuron when chemicals released from one neuron's axonal end cross the synapse. A neuron can provide electrical signals to muscle and gland cells in addition to other neurons.
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nitrogen in the air
to
A
nitrate in soil
decay
B
decay
ammonium compounds
(b) Describe what happens at A, B and C
(6 marks)
(c) How are some plants like the garden pea able to survive in soil deficient in nitrates?
(3 marks)
(d) Describe how nitrates are leached from the soil (3 marks)
(e) Nitrogen is a vital component of every living organism. Give ONE importance of nitrogen
to animals and ONE importance to plants. (2 marks)
Answers
Remains of plant and animal waste as well as soil organic materials serve as a constant source of nitrogen recycling. Crops, gaseous loss, runoff, erosion, and leaching all deplete the soil's nitrogen content.
How long does nitrogen stay in the soil?Until there has been sufficient rainfall to cause crop removal or losses due to extremely high rainfall. Nitrogen can be lost after it has been integrated into the soil by crop removal, leaching, or denitrification. In order for plants to develop, crop removal is necessary.Due to the fact that plants require a lot of it, nitrogen is the nutrient that is used most frequently to restrict plant development (10-60 g per kg of plant mass, to be exact). Furthermore, it does not linger in the soil for very long. It instead winds up in areas where we don't want it: in groundwater, bodies of water, and even the atmosphere.To Learn more About soil organic materials refer To:
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crystallization process diagram
Answers
Explanation:
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On what factors does numbers of sweaters a factory owner produces depend?
Answers
They are employed in the creation of goods and services. Land, labor, capital, and entrepreneurship are the four categories of components of factory production that economics distinguish between.
What are the four production factors used for?The factors of production are the resources needed to produce a good or service in order to earn money. The four elements of production are land, labor, capital, and entrepreneurialism, according to economists. An economy could be said to be built on them.
What are the four production factors?Land, labor, capital, and entrepreneurship are the four categories into which economists generally divide the components of production. Natural resources are referred to as "land," "labor" is defined as "work effort,” and "capital" is everything created that is used to create anything else.
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direct gene activation involves a second-messenger system.
Answers
Direct gene activation is a mechanism by which hormones and other signaling molecules can directly bind to receptors on the DNA and activate or repress the transcription of specific genes
This type of gene regulation does not involve a second-messenger system. A second-messenger system is a cascade of reactions that amplifies and amplifies the signal generated by a hormone or other signaling molecule. This system is typically triggered by a hormone or other signaling molecule binding to a receptor on the cell membrane. This binding causes a conformational change in the receptor, which in turn activates an intracellular signaling cascade that ultimately leads to changes in gene expression or other cellular responses. Second messengers are small molecules like cAMP, cGMP, IP3, DAG, and Calcium that are produced in response to the binding of a hormone or other signaling molecule to the receptor.
Examples of second-messenger systems include the cyclic AMP (cAMP) system and the phosphoinositide system. These systems are used by hormones such as adrenaline, glucagon, and thyroid hormones to regulate gene expression and other cellular responses.
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The neuroectoderm is induced by the notochord to form a _________. ___________
Answers
The neuroectoderm is induced by the notochord to form a neural; neural crest
What is neural?Neural refers to the structures in the body related to the nervous system. This includes the brain, spinal cord, and nerves that run throughout the body. Neural tissue is composed of nerve cells (neurons) and supportive cells, such as glial cells, which provide a protective insulation for neurons. Neurons communicate with each other and other cells in the body through electrical and chemical signals. Neural networks are complex systems of interconnected neurons that work together to process and interpret information from the environment. Neural networks play an important role in controlling behavior, cognition, and emotion. They are also responsible for the regulation of motor functions, vision, and hearing.
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What limits cell size How can the limitation of cell size be overcome?.
Answers
A cell's surface area grows as the square of its radius as the radius rises, yet its volume grows as the cube of its radius (much more rapidly). Thus, a cell's surface area to volume ratio drops as it grows in size.
A limited amount of cytoplasm can be under the control of each nucleus. This is one of the restrictions on certain biological cells' sizes. By possessing many nuclei, certain cells are able to get beyond this particular restriction. These unique cell types have multiple nuclei.
In biology, a cell is a basic membrane-bound entity that houses the building blocks of life and is the basic building block of all other living entities. As in the case of bacteria or yeast, a single cell is frequently an entire organism in and of itself.
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Oberve: The rider have mae of 10 gram (top), 100 gram (middle), and 1 gram (bottom). Drag the 100-gram rider to 300. At thi poition it balance a 300-gram ma. What happen to the pointer?
Answers
The pointer goes down as the rider have masses of 10 gram (top), 100 gram (middle), and 1 gram (bottom) when drag the 100-gram rider to 300.
Levers of a particular kind are used to measure mass, or the quantity of substance in an item, such as a triple beam balance. On the measurement tray is placed a thing with an unknown mass. To balance the object, a group of sliding weights known as riders slide on beams on the opposite side of a fulcrum. The triple beam balance is a common tool for determining an object's mass. It consists of three beams, each of which has a single sliding weight whose size matches the notches on the notched scales of the beams.
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rounded knob on the humerus that articulates with the radius
Answers
Located on the distolateral end of the humerus, the capitulum (Capitulum humeri) is a tiny, knob-like projection. It joins with the head of the radius bone at the elbow.
What is Anatomy of the Humerus bone?The shoulder girdle, also known as the pectoral girdle, which is made up of the scapula and clavicle bones, connects the humerus' distal end to the axial skeleton. The glenoid fossa, or scapular hollow, accommodates the rounded humeral head. The shoulder joint is given a lot of mobility but also loses some stability due to this small dip on the lateral side of the scapula.The picture descriptionmiddle portion of the humerus is a long, cylindrical shaft. Except for the deltoid tuberosity, which is situated close to the lateral margin's midway, the surface of the shaft is mostly smooth. Numerous muscles that move the upper arm and lower arm link to the shaft at this location.The trochlea of the humerus and the trochlear notch of the ulna, which resembles a pulley, make up the humero-ulnar joint. The concave surface of the radial head's superior surface and the humerus' rounded capitulum combine to form the humeroradial joint.To Learn more About humerus refer to:
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which of the following fire-management methods reduces outbreaks of pests and diseases?A. preventing firesB. suppressing a fire altogether C. suppressing a fire at earl
Answers
Controlled burning is an ordinary practice used to acchieve different goals. Controlled burning is a fire-management methods that reduces outbreaks of pests and diseases. Option D is correct.
When talking about controlled burning, we are referring to the use of fire in an ecosystem by an expert team. Controlled fires must be done under specific meteorological conditions. These include temperature range and humidity, among others, to avoid fire expansion.
The expert team must control the fire dimensions and guide it to an end point, which might be a water flow, rocks, a road, among others.
Some ecosystems depend on natural fires to remain stable. When the practice of controlled fire is well-done, it helps to restore these ecosystems' health and to avoid future damages. Controlled fire practice has several land management goals.
Ecosystem health restorationNutrient recycleInvasive species controlPestes / Plagues controlSpace for new native vegetationFlammable fuels reductionIncidental uncontrolled fires reductionAmong these goals, one of the followed goals is to control the outbreaks of pests and diseases.
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Full Question ;
which of the following fire-management methods reduces outbreaks of pests and diseases?
A. preventing fires
B. suppressing a fire altogether
C. suppressing a fire at early stages
D. controlled burning
What is undigested food called?.
Answers
Undigested food is called "feces." Food is our fuel, and the nutrients it contains provide our cells with the substances and energy they need to function.
However, food must first be broken down into manageable portions that the body can absorb and utilize. Arrives at the mouth. It exits the body as feces (poop) through the anus after passing through a lengthy tube. Food is broken down into tiny molecules along the route so that the body can absorb the nutrients it requires:
Amino acids must be extracted from protein.
Simple sugars are formed when starches break down.
Fatty acids and glycerol are formed when fats are broken down.
What exits the body as feces are the food waste components that the body is unable to utilize.
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What if a human has more than 46 chromosomes?.
Answers
If a humans have more than 46 chromosomes, they will experience trisomies.
Chromosomes are fine thread-shaped structures that contain coiled DNA chains and are located in the cell nucleus. Chromosomes function as carriers of traits that can be passed on to their offspring. In humans, the number of chromosomes in a diploid cell is 46 or 23 pairs of chromosomes.
The chromosomes consist of 44 fruit chromosomes consisting of 22 pairs of body chromosomes and a pair of sex chromosomes. When someone has more than 46 chromosomes, they will experience a disorder called trisomy. Trisomy is a chromosomal disorder in which the cells in the body have three chromosomes. The cause of this excess chromosome is associated with pregnancy that occurs in women with an older age. Women who are pregnant at an old age have hormones that can affect cell division during embryonic development so as to produce extra chromosomes..
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Do clams have hearts?.
Answers
How many sister chromatids are there in the primary oocytes if there are 46 single chromosomes in the Oogonium?.
Answers
Sister chromatids are there in the primary oocytes if there are 46 single chromosomes in the Oogonium is 92 chromatids
Fertilization is the process of fusion of ovum and sperm cells to produce diploid cells. Diploid cells are cells that consist of 46 chromosomes or 23 pairs of chromosomes.
A chromatid is one of the two replicated arms of a chromosome formed by duplication of chromosomes during S phase or Interphase synthesis. The chromatids consist of two arms namely the p arm and the q arm, and during mitosis the fixed chromatids are joined to the centromere and are called sister chromatids. So that the 46 single chromosomes in the primary oocyte have 92 chromatids because each chromosome has 2 chromatid arms.
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Now choose one of the resources used for energy production that you have studied in this lesson. Describe how the way humans use or obtain this resource might impact the natural resource you described in part A. If you don't think the natural resource in part A is affected, explain why.
Answers
In general, the way humans use or obtain any resource can have a significant impact on the natural resources.
For example, if the resource is fossil fuels such as coal, oil, and natural gas, the extraction and burning of these resources can lead to pollution of air, water, and soil. It also contributes to climate change and global warming, which can have severe impacts on various natural resources such as oceans, forests, and wildlife.
What is the energy production about?Mining and drilling for fossil fuels can also lead to habitat destruction and fragmentation, which can negatively impact wildlife populations and biodiversity.
The production and transportation of these resources can also lead to spills and leaks, which can harm aquatic wildlife and their habitats.
In conclusion, the way humans use or obtain resources can have a significant impact on the natural resources, and it's important to consider the environmental impact of different energy production methods in order to make more sustainable choices.
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what surrounds the epiphysis of the bones to reduce friction?
Answers
Epiphysis of Bone is covered by a thin layer of compact tissue called articular cartilage or Hyaline Cartilage. It reduces the friction caused due to movement of Bones.
A bone has two parts Long portion called Diaphysis and Two ends called Epiphysis. Epiphysis is covered with articular cartilage that prevents the friction where the bone articulates or joints , Hyaline cartilage is present at both ends of long bone, It forms a smooth surface on bone during the Movement of joints it reduces friction. Cartilage is a connective tissue which helps in joining one bone with next bone. It gets withered as it ages and the damage in Hyaline cartilage causes painful joints and results in Osteoarthritis.
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