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A particular function is CARRIED out by a group of cells at a definite place in the body. SIMILARLY, DIFFERENT functions are carried out by different GROUPS of cells in an organism and this is known as division of labour inmulticellular ORGANISMS.

HEYA,,.....GN
The Average Tidal Volume of Human Respiration is 500ML. And it includes DEAD SPACE air of 150 ml and 350 ml of Alveolar Air.
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Please MAKE it as brainliest....

hey BUDDY here is ur ans.............................just constantrate on ur STUDIES,nd daily just study 4 to 5 hours take nap in between nd I suggest u to delete this app nd make a time table nd also if u have any doubt then SOLVE it with ur book or take help with ur teacher don't use mobile to solve ur doubt,if u will it will destrect ur MIND have light meals before studying nd take breaks in between
ALL THE BEST FOR UR NEET PREPARATION.....

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Mitochondria Definition

Mitochondria (singular: mitochondrion) are organelles within eukaryotic cells that produce adenosine triphosphate (ATP), the main energy molecule used by the cell. For this reason, the mitochondrion is sometimes referred to as “the powerhouse of the cell”. Mitochondria are found in all eukaryotes, which are all LIVING things that are not bacteria or archaea. It is thought that mitochondria AROSE from once free-living bacteria that were incorporated into cells.

Function of Mitochondria

Mitochondria produce ATP through process of cellular respiration—specifically, aerobic respiration, which requires oxygen. The citric acid cycle, or Krebs cycle, takes place in the mitochondria. This cycle involves the oxidation of pyruvate, which comes from glucose, to form the molecule acetyl-CoA. Acetyl-CoA is in turn oxidized and ATP is produced.

The citric acid cycle reduces nicotinamide adenine dinucleotide (NAD+) to NADH. NADH is then used in the process of oxidative phosphorylation, which also takes place in the mitochondria. Electrons from NADH travel through protein complexes that are embedded in the inner MEMBRANE of the mitochondria. This set of proteins is called an electron transport chain. Energy from the electron transport chain is then used to transport proteins back across the membrane, which power ATP synthase to form ATP.

The amount of mitochondria in a cell depends on how much energy that cell needs to produce. Muscle cells, for example, have many mitochondria because they need to produce energy to move the body. Red blood cells, which carry oxygen to other cells, have none; they do not need to produce energy. Mitochondria are analogous to a furnace or a powerhouse in the cell because, like furnaces and powerhouses, mitochondria produce energy from basic components (in this case, molecules that have been broken down so that they can be used).

Mitochondria have many other functions as well. They can store calcium, which maintains homeostasis of calcium levels in the cell. They also regulate the cell’s metabolism and have ROLES in apoptosis (controlled cell death), cell signaling, and thermogenesis (heat production).

Structure of Mitochondria

Mitochondria have two membranes, an outer membrane and an inner membrane. These membranes are made of phospholipid layers, just like the cell’s outer membrane. The outer membrane covers the surface of the mitochondrion, while the inner membrane is located within and has many folds called cristae. The folds increase surface area of the membrane, which is important because the inner membrane holds the proteins involved in the electron transport chain. It is also where many other chemical reactions take place to carry out the mitochondria’s many functions. An increased surface area creates more space for more reactions to occur, and increases the mitochondria’s output. The space between the outer and inner membranes is called the intermembrane space, and the space inside the inner membrane is called the matrix.T

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C. lifespan

The rate of APPEARANCE of new forms is linked to the life cycle or the life span of an organism, is BASED on the theory of natural selection. For EXAMPLE, Microbes that divide fast have the ability to multiply and become millions of individuals within hours

The ANSWER is OPTION D i.e. LAMARCK ....

Hii, here is ur ans

wrong and is:
4]sautopsids are not present in evolutionary LINE of mammals

reason: Sauropsida is a GROUP of amniotes that includes all existing BIRDS and reptiles as well as their fossil ancestors among the amniotes and also the extinct descendants of these ancestors. Large land ANIMALS are EITHER in this group or in its sister group, Synapsida, which includes mammals and their fossil relatives.

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The body of the fish is stremlined that is like BOAT shape is for swimming in water. when it moves it strikes the water so that it would MOVE front.
IF YOU THINK IT IS REALLY RELAVENT ANSWER DON'T ADD TO BRAINLIST INSTEAD THANK ME I'LL BE VERY HAPPY FOR THAT
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It will MESS with the FOOD chain and it will EVENTUALLY effect the population.

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Sandra Saju asked in Science

What is placenta? Also write its TWO functions ?

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Bubblyy Bhavzz answered this
504 helpful votes in Science, Class XI-Science

Placenta is the circular organ present in the uterus of pregnant MAMMALS which is REQUIRED for the nourishment and maintenance of the fetus. It performs various function like:

1) Nutrition : It helps to transport nutrients from mother's blood to foetus for its development.

2) Respiration: It provides OXYGEN to the fetus and take CO2away from the fetus.

3) Excretion: It helps in the removal of waste products from the fetus and transfers them to mother's blood.

4) Immunity: It provides immunity to the fetus. Antibodies developed in mother passes onto fetus through the placenta.

5) Storage: Placenta can stores some fats, glycogen and iron.

6) Secretion of HORMONES: It secretes many hormones like estrogen, progesterone, gonadotropin and placental lactogen, thus functions as an endocrine gland.

Hello MATE..

I think Gorilla should be answer

As because the way they walk and ability to live on LANDS

GUTTATION :
1) loss of liquid DROPLETS
2) takes place during early morning or night time
3) droplets contains xylem sap
4) it takes place from margin of the xylem ELEMENTS ( HYDATHODE)

TRANSPIRATION:
1)loss of water vapour
2) takes during daytime night times
3)diffused vapours have only water
4)it takes place from STOMATA

Hii!! here is ur answer

Mesozoic Era, second of earth’s three MAJOR geologic eras of phanerozonic TIME. Its name is derived from the Greek term for “middle life.” The Mesozoic Era began 252.2 million YEARS ago, following the conclusion of the PALEOZOIC era , and ended 66 million years ago, at the dawn of the Cenozoic era

HENCE ur answer is
2] mesozonic and coenozoic era

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and sry for lateness..

As WOOL are HAIR of sheep and COTTON is a plant
THUS burning wool smells like burning hair and burning cotton smells like burning paper

ANSWER is 2 and it is BASED on Darwian THEORY.

The Renin-Angiotensin System and BLOOD Pressure Control. The renin-angiotensinsystem or RAS regulates blood pressure and fluid balance in the body. ... Angiotensin II stimulates the release of the hormonealdosterone in the adrenal glands, which causes the renal TUBULES to retain SODIUM and WATER and excrete potassium.

This MAKES you EASY

A GOOD QUESTION ASKED AFTER SO LONG

KINDLY REFER TO THE ATTACHMENT

Wetlands are one of the most productive ecosystems, comparable to tropical evergreen forests in the biosphere and play a significant role in the ecological sustainability of a region. They are an essential part of human civilisation meeting many crucial needs for life on earth such as DRINKING water, protein production, water purification, energy, fodder, biodiversity, flood storage, transport, recreation, research-education, sinks and climate stabilizers. The values of wetlands though OVERLAPPING, like the cultural, economic and ecological factors, are inseparable. The geomorphological, climatic, hydrological and biotic DIVERSITY across continents has contributed to wetland diversity.  Across the globe, they are getting extinct due to manifold reasons, including anthropogenic and natural processes. Burgeoning population, intensified human activity, UNPLANNED development, absence of management structure, lack of proper LEGISLATION, and lack of awareness about the vital role played by these ecosystems (functions, values, etc.) are the important causes that have contributed to their decline and extinction.  With these, wetlands are permanently destroyed and lose any potential for rehabilitation. This has led to ecological disasters in some areas, in the form of large-scale devastations due to floods, etc.

It is PROGRESSIVE EVOLUTION

Answer:

Cancer is one of the most important non-infectious or non-communicable DISEASES.

“Cancer is referred to as an AILMENT CHARACTERISED by an unrestrained growth of abnormal cells which if untreated and unchecked eventually kills the patient.”

In India nearly four lakhs of people are affected by cancer every year. Out of them two lakhs of people die. It is mainly due to late detection. Many people are not aware of the early symptoms of this disease.

The growth of multicellular animals occurs due to addition of new cells. The old or existing cells divide by mitosis to form new cells. This division is controlled and regulated by some factors. Sometimes, due to unknown reasons, some cells divide in abnormally faster rate to form a lump.

This lump increases rapidly causing ulcers. It causes serious complications in the body. These abnormal cells FIRST destroy the organ and then the whole body. These cells utilize the total food of the body. So the affected person becomes weak, looses his weight and ultimately dies. The tumors, enclosed in connective TISSUE are called benign tumor and when the tumors grow, it is called as malignant.

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The 2nd OPTION is not TRUE -- Different AGED rock sediments CONTAIN fossils of similar LIFE forms.

For decades, scientists believed that theatmosphere of early Earth was highly reduced, meaning that oxygen was GREATLY limited. Such oxygen-poor conditions would have resulted in an atmospherefilled with noxious METHANE, CARBON MONOXIDE, hydrogen sulfide, and ammonia
so I think you have setting answer

A LANDSCAPE is a mosaic of VEGETATION types, with sizes varying with the topography and other characteristics of the land. The TERM “OAK savanna landscape” refers to a natural AREA or a complex of natural areas with a wide diversity of species. The dominant trees of the oak savanna are several major species of oaks.

Hello! Mate

So..There are many reasons behind the rapid increase in growth of HUMAN population than those of animals..

1. Deforestation..Animals are deprived of their natural inhabitants.

2.POLLUTION..Due to pollution in air and water animals are having very hard TIME to survive.

3.Encroachment..humans interfare in the lives of animals they separate the BABIES from there mothers.(that's sad)

4.Hunting..Humans HUNT down animals for there meat and other uses.

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It is difficult to make antiviral medicines than making antibiotics bcos VIRUSES hav few biochemical mechanisms of their own. they enter the host CELLS and use their machinery for their life PROCESSES. so antiviral mdicines will work against the host body..
hope it HELPS U..

HI mate....

your ANSWER....

the hemoglobin  increases the oxygen carrying capacity of BLOOD. ... In humans and most other vertebrates, the most common respiratory pigment is a protein called hemoglobin. Respiratory pigments also pick up carbon dioxide from our tissues and bring it to our lungs, where we exhale it.

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2400 CALORIES in RURAL AREAS

2200calories in URBAN areas.

1. Rodents, birds and animals.

2. Insects and MICRO-organisms. Micro organisms like fungi, bacteria, yeast, moulds etc. greatly damage the stored food.

3. Enzymes. Enzymes are biocatalysts. They are found in living cells. They spoil vegetable, fruits, meat, FISH etc. When stored for an appreciable PERIOD. MOREOVER enzymes over-ripen the food which results in their SPOILAGE.

Ascariasis is a disease caused by the parasitic roundworm Ascarislumbricoides. Infections have no symptoms in more than 85% of cases, especially if the NUMBER of worms is small. ... The eggs hatch in the intestines, BURROW through the gut WALL, and MIGRATE to the lungs via the blood.

Effect of LIGHT on reproduction:

In many animals (e.g., birds) light is necessary for the activation of gonads and in ini­tiating annual BREEDING activities. The gonads of birds are found to become active with INCREASED illumination during summer and to regress during SHORTER periods of illumination in winter.

Hey! Off topic but are you a V.I.P. by any chance? (As in a BIGBANG fan?)

it CONTAIN about 8G of PROTEIN

It's dizygotic twins. Twins can EITHER be MONOZYGOTIC which SPLITS into two FORMING dizygotic

That it's a miracle and origin of this world is by brahma and Adam and EVE were the FIRST to this world

Carbohydrates are DIGESTED into SUGAR and protein into AMINO ACIDS

The two main TYPES of proteins INVOLVED in such TRANSPORT are BROADLY categorized

Adaptations to the Saline Environment. The halophytic plants are unique in their ability to TOLERATE salt, living in or close to the MARINE environment these plants have evolved to cope with HIGH SALINITY which would otherwise exclude fully terrestrial plant

Heya mate here is your answer
The most common and serious vaccine-preventable diseases TRACKED by the World HEALTH Organization (WHO) are: diphtheria, Haemophilus influenzae serotype b infection, hepatitis B, measles, meningitis, mumps, pertussis, poliomyelitis, rubella, tetanus, TUBERCULOSIS, and yellow fever.
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Seals are remarkably ADAPTED to OCEAN living. These aquatic mammals have powerful sleek bodies that are encased in BLUBBER and taper down into a tail. Their thick no-neck physiques and loosely interlocked vertebrae make them strong and flexible enough to surf the waves and navigate ice and rocky shores.

In TELOPHASE 1 of MEIOSIS