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tion:Animal cells are generally smaller than plant cells. Another defining characteristic is its irregular shape. This is due to the absence of a cell wall. But animal cells share other cellular organelles with plant cells as both have evolved from eukaryotic cells.A typical animal cell comprises the following cell organelles:Cell MembraneA thin semipermeable membrane layer of protein and fats surrounding the cell. Its primary role is to protect the cell from its surrounding. Also, it controls the entry and exit of nutrients and other microscopic ENTITIES into the cell.NUCLEAR MembraneIt is a DOUBLE-membrane structure that surrounds the nucleus. It is also referred to as the nuclear envelope.NucleusIt is an organelle that contains several other sub-organelles such as nucleolus, nucleosomes and chromatins. It also contains DNA and other genetic materials.CentrosomeIt is a small organelle found near to the nucleus which has a thick centre with radiating tubules. The centrosomes are where microtubules are produced.Lysosome (Cell Vesicles)They are round organelle SURROUNDED by a membrane comprising of digestive enzymes which help in digestion, excretion and in the cell renewal process.CytoplasmA jelly-like material which contains all the cell organelles, enclosed within the cell membrane. The substance found within the cell nucleus, contained by the nuclear membrane is called the nucleoplasm.Golgi ApparatusA flat, smooth layered, sac-like organelle which is located near the nucleus and involved in manufacturing, storing, PACKING and transporting the particles throughout the cell.Detailed Reading: Golgi ApparatusMitochondrionThey are spherical or rod-shaped organelles with a double membrane. They are the powerhouse of a cell as they play an important role in releasing energy.RibosomeThey are small organelles made up of RNA-rich cytoplasmic granules and they are the sites of protein synthesis.Endoplasmic Reticulum (ER)This cellular organelle is composed of a thin, winding network of membranous sacs originating from the nucleus.VacuoleA membrane-bound organelle present inside a cell involved in maintaining shape and storing water, food, wastes, etc.NucleoporeThey are tiny holes present in the nuclear membrane which are involved in the movement of nucleic acids and proteins within the cell.Animal Cell TypesThere are numerous types of animal cells, each designed to serve specific functions. The most common types of animal cells are:Skin CellsMelanocytes, keratinocytes, Merkel cells and Langerhans cellsMuscle CellsMyocyte, Myosatellite cells, Tendon cells, Cardiac muscle cellsBlood CellsLeukocytes, erythrocytes, plateletNerve CellsSchwann cell, glial cells etcFat CellsAdipocytesMark me as a brainlist thankyou....

tion:The CELL was first discovered and named by Robert HOOKE in 1665. He remarked that it looked strangely similar to cellula or small ROOMS which monks INHABITED, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscopeMark me as a brainlist thankyou

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ometersMicrometre, also called micron, metric unit of measure for length equal to 0.001 MM, or about 0.000039 inch. Its symbol is μm. The MICROMETRE is commonly EMPLOYED to measure the thickness or diameter of MICROSCOPIC objects, such as microorganisms and colloidal particles

In genetics, an insertion (also called an insertion mutation) is the ADDITION of one or more nucleotide base pairs into a DNA SEQUENCE. This can often happen in MICROSATELLITE regions due to the DNA polymerase slipping.sExplanation:

Explanation:Hunting Adaptations All spiders are predatory creatures. As such, their variegated hunting practices are adapted to suit their particular environment and the organisms they feed on. For instance, most spiders use webs to hunt, but not all of them. Some use camouflage to hide on plants – flowers, often – and wait for unsuspecting prey to wander by before POUNCING. Other spiders find prey underwater and are adapted to DIVE under the surface, where most spiders fear to tread. Still others adopt behavioral adaptations suited to their environment, whether that is a cave, a tree or the underbrush. Superfluous Eating An article published in a 2001 issue of “Behavioral Ecology” examined an adaptation that involves spiders living in food-limited environments, or areas where there is a low population or availability of prey. In these areas, spiders exhibited an adaptive behavior INVOLVING superfluous killing of those prey. They capture much more prey than they require, consume some of them in a binge, and leave the rest either unconsumed or partially consumed. Spiders in areas where prey populations are high do not exhibit this behavior and, in fact, RARELY leave UNFINISHED or half-consumed prey. Defensive Webs A 2003 article published in the journal, “Ecology Letters,” posits three-dimensional spider webs are important adaptations for many spiders. Araneoid sheet web weavers, the types of spiders who adapted to weave three-dimensional webs rather than two-dimensional orb webs, are now the most widespread aerial spider groups. These webs are an adaption in two ways. First, they are able to capture prey in a more efficient manner, leading to increased populations of the spiders. Secondly, they act as a defensive measure, particularly against predators like mud dauber wasps. As an effective defensive tool, three-dimensional webs allowed for the diversification of araneoid sheet web weaver species. Social Spiders and Prey In tropical environments, spiders have adapted to living in various habitats defined by elevation. In a 2007 article published in the “Journal of Animal Ecology,” researchers noted that social spiders tend to populate lowland tropical habitats, while congeneric subsocial species occurred at higher elevations and/or latitudes. One reason for this is the size of insects available at different levels. They tend to be larger in lowland habitats, which restrict social spiders to hunting at that level.

Explanation:These phases are PROPHASE, prometaphase, METAPHASE, anaphase, and telophase. Cytokinesis is the final PHYSICAL cell division that follows telophase, and is therefore sometimes considered a sixth phase of MITOSIS

During puberty, hair appears on the labia majora. The labia minora (literally, small LIPS) can be very small or up to 2 inches wide. The labia minora lie just inside the labia majora and surround the openings to the vagina and URETHRA. A rich SUPPLY of blood vessels GIVES the labia minora a pink color.hope it helps

paper.14metal.2 16glass.4 plastic.6 7 8 10 18 20 11 19 organic.1 2 3non recycle.5 13 15Explanation:5

Explanation:All living organisms need nutrients to survive. While plants can obtain nutrients from their roots and the energy molecules required for cellular function through the process of photosynthesis, animals obtain their nutrients by the consumption of other organisms. At the cellular level, the biological molecules necessary for animal function are amino acids, lipid molecules, nucleotides, and simple sugars. However, the food CONSUMED consists of protein, fat, and complex carbohydrates. Animals must convert these macromolecules into the simple molecules required for maintaining cellular function. The conversion of the food consumed to the nutrients required is a multistep process involving digestion and absorption. During digestion, food particles are broken down to smaller components, which are later absorbed by the body. This happens by both physical means, such as chewing, and by chemical means. One of the challenges in human NUTRITION is maintaining a balance between food intake, storage, and energy expenditure. Taking in more food energy than is used in activity leads to storage of the excess in the form of fat DEPOSITS. The rise in obesity and the resulting diseases like type 2 diabetes makes understanding the role of diet and nutrition in maintaining GOOD health all the more important. The Human Digestive System The process of digestion begins in the mouth with the intake of food. The teeth play an important role in masticating (chewing) or physically breaking food into smaller particles. The enzymes present in saliva also begin to chemically break down food. The food is then swallowed and enters the esophagus—a long tube that connects the mouth to the stomach. Using peristalsis, or wave-like smooth-muscle contractions, the muscles of the esophagus push the food TOWARD the stomach. The stomach contents are extremely acidic, with a pH between 1.5 and 2.5. This acidity kills microorganisms, breaks down food tissues, and activates digestive enzymes. Further breakdown of food takes place in the small intestine where bile produced by the liver, and enzymes produced by the small intestine and the pancreas, continue the process of digestion. The smaller molecules are absorbed into the blood stream through the epithelial cells lining the walls of the small intestine. The waste material travels on to the large intestine where water is absorbed and the drier waste material is compacted into feces; it is stored until it is excreted through the anus.

Blood enters the heart through two LARGE veins, the inferior and superior VENA cava, emptying oxygen-poor blood from the body into the RIGHT atrium. As the atrium CONTRACTS, blood flows from your right atrium into your right ventricle through the open tricuspid VALVE.

tion:PLANT Cell Animal Cell1. They are larger in SIZE. 1. They are smaller in size.2. Cell wall is PRESENT. 2. Cell wall is absent.3. Lysosomes are absent or very few in number 3. Lysosomes are larger in number.4. PLASTIDS are present. 4. Plastids are abseMark me as a brainlist thankyou

In physiology, RESPIRATION is the MOVEMENT of oxygen from the outside environment to the cells within TISSUES, and the transport of carbon dioxide in the OPPOSITE direction.

A divalent cation is an cation with valence of 2+. This type of ion may form TWO CHEMICAL bonds with anions.Also Known As: bivalent cationExamplesA magnesium ion, MG2+ is a divalent cation.Explanation:PLEASE MARK ME AS THE BRAINLIEST AND FOLLOW ME

I don't KNOW how to DRAW

tion: the organ which is used in the PROCESS of reproduction is KNOWN as HUMAN REPRODUCTIVE organs fertilisation.i.e. the fusion of sperm in the oven is the first step of reproduction

Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment. Older people, and those with underlying medical problems like CARDIOVASCULAR disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.The best WAY to prevent and slow down TRANSMISSION is be WELL informed about the COVID-19 virus, the disease it causes and how it spreads. Protect yourself and others from infection by washing your hands or using an alcohol based rub frequently and not touching your face. The COVID-19 virus spreads primarily through droplets of saliva or discharge from the nose when an infected person coughs or sneezes, so it’s important that you also practice respiratory etiquette (for EXAMPLE, by coughing into a flexed elbow).At this time, there are no specific vaccines or treatments for COVID-19. However, there are many ongoing clinical trials evaluating potential treatments. WHO will continue to provide updated information as soon as clinical findings become available.Stay informed:

(a) PLOUGH - It is used for TILLING of soil, adding FERTILISERS to the crop, removing. the weeds, scraping of soil.(b) Hoe - It is used for removing weeds and for loosening the soil.(c) CULTIVATOR - Used for ploughing.

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tion:Charles DRAWIN is the answer of the GIVEN QUESTION

starchExplanation:after after the photosynthesis the FOOD prepared by the LEAVES is stored as starch in the roots of the PLANT and the STEM of the plant also

chlorophyllExplanation:

tion:Anatomy of Young Stem of Pinus:It resembles the anatomy of DICOTYLEDONOUS stem in many respects. The general arrangement of the various tissues from the circumference to the centre is the same. However, it differs, from the dicot stem in having a large number of resin ducts filled with resin. These ducts are found to be distributed almost throughout the stem.The epidermis has an irregular outline. Endodermis and pericycle are like those of the dicotyledonous stem, but the pericycle contains no sclerenchyma. The vascular bundles are not wedge-shaped, as in the DICOTYLEDONS. Phloem consists of annular and spiral tracheids which are IRREGULARLY disposed TOWARDS the centre.If it helps you plz CLICK the BRAINLIEST answer and the heart

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if we KNOW LENS FOCUS than we can CALCULATE

Explanation:Heterotrophic ORGANISMS obtain their food from the bodies of other organisms. This is done in various ways. Herbivores such as cattle, TORTOISES and SPARROWS EAT plants. Carnivores such as lions, crocodiles, sharks and kestrels eat the flesh of other animalsHope it helpsPls mark me brainliestI will FOLLOW

ansmitter Criteria The chemical must be PRODUCED within a neuron. The chemical must be found within a neuron. When a neuron is STIMULATED (depolarized), a neuron must RELEASE the chemical. When a chemical is released, it must act on a post-synaptic receptor and CAUSE a biological effect.hope it's helps you ...mark brainlist answer ...thank you ...

te of satuer ➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡➡❤Saturn now BOASTS Solar System's most known moons: 82. A team led by Carnegie astronomer SCOTT Sheppard has discovered 20 new moons orbiting Saturn, pushing the ringed planet's total to a record 82 – THREE more than Jupiter's currently known 79. ➡➡➡➡➡➡➡➡➡➡➡

tion:LYSOSOMES are known as suicide bags of the cell because they contain LYTIC ENZYMES capable of digesting cells and unwanted materials.When lysosomes burst, the lytic enzymes WITHIN the organelle spill all over the cell, rupturing the cell membrane or cell wall and inducing the death of the cell.If it helps you plz click the BRAINLIEST answer and follow me.

4) all chemical reaction occuring in our body is called metabolism.Explanation:1) regeneration can be of two types ONE in which WHOLE body REGENERATES from a single part and the other in which only a damaged part is regenerated.2) biology is study of living organisms in respect of their anatomy physiology morphology etc.3)it is only possible in microorganisms performing asexual reproduction like BINARY fission in bacteria. Not in all organisms.4) the chemical reactions occurring in our body is known as metabolism. It can be catabolism and anabolism.

t of rate of a reaction is➡➡➡➡➡➡Reaction rates are USUALLY expressed as the concentration of reactant CONSUMED or the concentration of product formed per UNIT time. The units are thus moles per liter per unit time, WRITTEN as M/s, M/min, or M/h.➡➡➡➡

tion:ABDOMINAL pain is pain that OCCURS between the CHEST and pelvic regions. Abdominal pain can be crampy, achy, dull, intermittent or sharp. It's also called a stomachache. Inflammation or diseases that affect the organs in the ABDOMEN can cause abdominal pain.Mark me as a brainlist thankyou

If you do not know the pH of your soil, consider having a soil test done. A common cause of chlorosis is a deficiency of iron or manganese, both of which are PRESENT but unavailable in high pH soils (pH>7.2). Iron and manganese are needed by plants to FORM CHLOROPHYLL and to COMPLETE photosynthesis.

s: Death of tissue; PARTICULARLY LEAF tissue; is called necrosis. Necrosis is caused by the deficiency of Ca, MG, Cu and K. Deficiency of N, K, S and Mo causes stunted growth because of INHIBITION of cell division. Deficiency of N, S and Mo delays flowering....hope its HELPS you

Explanation:Heterotrophic ORGANISMS obtain their food from the bodies of other organisms. This is done in various ways. Herbivores such as CATTLE, tortoises and sparrows eat plants. Carnivores such as lions, crocodiles, sharks and kestrels eat the flesh of other animals. OMNIVORES such as HUMANS can eat both plants and animals.Hope it helpsMark me brainliestI will follow u