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Answer:

The Sarcomere: The Basic Contractile UNIT of Muscle

A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for MUSCULAR CONTRACTION. The most popular model that describes muscular contraction is called the sliding FILAMENT theory. In this theory, active force is generated as actin filaments slide past the myosin filaments, resulting in contraction of an individual sarcomere.

Explanation:

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a) Mitochondria

b) Ribosomes

c) CHROMOSOMES (genes)

d) Nucleus

e) Lysosomes

f) CELL membrane

Answer:

1) It is the outer most LAYER of plant body

2) Thick CUTICLE PREVENT from INJURIES

PLS ASK QUESTION CLEARLY......

Each myosin filament has numerous heads, and each actin filament has numerous binding SITES. This is important because in order for a sarcomere to maximally contract, numerous POWER strokes must occur.

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ANSWER:

false

false

false

true

true

false

true

true

true

false

false

true

Answer:

Hypotension.......... is the medical term for LOW blood pressure (less than 90/60). A blood pressure reading appears as two numbers. The first and higher of the two is a MEASURE of systolic pressure, or the pressure in the arteries when the heart beats and fills them with blood.

about heart disease.....

Heart disease is caused by damage to all or part of the heart, damage to the coronary arteries, or a poor supply of NUTRIENTS and OXYGEN to the organ. Some types of heart disease, such as hypertrophic cardiomyopathy, are GENETIC. These, alongside congenital heart defects, can occur before a person is born

Answer:

It cannot be DIRECTLY PROCESSED; RISK of LIFE; virues can be transferred to blood

Answer:

1.true

2.false

3.false

4.true

5 true

6.false

7.true

8.true

9.true

10.true

11.false

12.true

13.false

✒Answer:

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Your answer here !

1. FALSE

2. False

3. False

4. True

5. True

6. False

7. True

8. True

9. True

10. True

11. False

12. False

13. True.

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Ptyalin DEFINITION, an ENZYME in the saliva that CONVERTS starch into DEXTRIN and maltose.

ANSWER:

This is the PROCESS through which any PERSON can excreate WASTE PRODUCT out ....

ANSWER:

this PROCESS is down with the HELP of ROOTS.

ANSWER:

गग्जफड़4व5के2र58सज्वबम्म्ब्ज़ास्कीक्जग

Explanation:

xटिकवगकसजगजग जगबम

ANSWER:

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Answer:epiglottis is a elastic cartilage BASED flap like structure which is covered with mucosa and attached to the inner surface of laynx

FUNCTION :EVERY TIME we swallow a bolus of food or water down our throat the epiglottis closes the laynx to avoid the entry of food or water in WINDPIPE .to avoid blockage to windpipe which can GIVE rise to suffocation and death.

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Answer:

HI friend

Here is your answer

If we breath we will supply OXYGEN from our nasal tube to lungs to HEART which makes the hearth pump majorly is air.

Thank you

1. Pistal And Stamin

2. Anther

3.don,t now

4. Farmer

5.

ANSWER:

the main difference between MILK TEETH and permanent teeth is,

that milk teeth comes when we at age of 8-9 MONTH born and they are weak.

but permanent teeth are STRONGER and they comes after milk teeth was broke, at age of 5-6years.

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Answer:

a)--- 5

b)---4

c)---2

d)--3

e)----1

Answer:

upper EPIDERMIS contain LARGE number of stomata, while lower epidermis contain LESS number of chloroplast.

Explanation:

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Answer:

1.macro,2.nitrite,nitrate 3.nitrogen, phosphorus, POTASSIUM, zinc, calcium and MAGNESIUM 4.micronutrients such as zinc,IRON ETC

Answer:

In the case of the isotonic SOLUTION, there was roughly an equal amount of SOLUTES in the corn SYRUP/water solution than there was in the egg, so there was no net movement in or out of the egg. It stayed the same size. ... So, water flowed into the egg, and as a result, it grew in size.

In the case of the hypotonic solution, there were more solutes in the egg than in the pure water. So, water flowed into the egg, and as a result, it grew in size.

In the case of the hypertonic solution, there were more solutes in the corn syrup than there were in the egg. So, water flowed out of the egg and into the corn syrup, and as a result the egg shriveled up.

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Answer:

1)- Cheek Tissue- The buccinator muscle's function is to hold food boluses in the mouth against the TEETH during mastication. The three bony structures that HELP form the cheek are the zygomatic bone, the maxilla bone, and the mandibular bone.

2)- Single layer of cell- Simple epithelium is a single layer of CELLS with every cell in direct contact with the BASEMENT membrane that separates it from the UNDERLYING connective tissue. In general, it is found where absorption and filtration occur. The thinness of the epithelial barrier facilitates these processes.

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ANSWER:

ATP -- ADENOSINE TRIPHOSPHATE

Answer:

ENERGY generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known a non-conventional energy. All these sources are renewable PROCESS of energy generation and do not cause environmental pollution. Our country has been ENDOWED with adequate NATURAL resources.

: Root pressure is the force that drives water and NUTRIENTS into xylem upwards through plants. An experiment that can be used to demonstrate this force is by simply cutting a potted plant near the ground level and what is seen is water gushing out from the DECAPITATED plant.

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Answer:

reflex is MADE simple by NEURAL pathway CALLED reflex arc.

they can act on an impulse reaches the brain.

Explanation:

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ANSWER:

they are so MANY THINGS to be

Answer:

Plants absorb water from the soil by OSMOSIS. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are ADAPTED for taking up water and mineral ions by having a large SURFACE area to increase the rate of ABSORPTION.

ANSWER:

Some IMPORTANT QUESTIONS

Explanation:

MICROBIAL GROWTH on meat products, as well as other foods, is affected, not only by the type and level of initial contamination but also by various factors ASSOCIATED with the product (intrinsic) or its environment (extrinsic). Approaches aiming to inhibit microbial growth are mostly based on manipulation or changes in these factors. These include storage at low temperatures, DRYING (evaporation) or REDUCTION by binding of water levels (salting and sugaring) available for microbial growth (water activity), addition of acids (low pH), fermentation (low pH and production of antimicrobials), packaging under modified atmospheres such as vacuum, and use of chemical antimicrobials.

Bacteria divide and reproduce asexually. Binary Fission and everything is equally divided between the two daughter cells.

Time it takes for a single CELL to go from one division to the next: generation time or doubling time. This is also the time it takes for a population to double. For many "typical" bacteria under "ideal" conditions this doubling time may be as fast as 20 minutes.

Bacterial population increases exponentially or logarithmically. That is:

(x)(2)n , where x=initial number of bacterial cells and n=the number of generations.

[Remember that if 2n=y, then n=log2y].

This is also a geometric progression: 2, 2x2, 2x2x2, 2x2x2x2, ETC.

Bacterial Growth Curve:

When an organism is inoculated into a nutrient solution 4 distinct growth PHASES are noted:

1.) Lag Phase - where the organisms are "getting used to the medium and physical conditions" - that is they are inducing the necessary enzymes for growth.

2.) Logarithmic (LOG) Growth Phase - This is the phase where the generation time is measured. The more ideal the conditions, the faster the growth - up to the maximum growth rate for the species.

3.) Stationary Phase - during this phase the number of new cells equals the number of dead cells so that there is no net increase in viable cells. Nutrient are becoming depleted, the pH is CHANGING, toxic wastes are building up, oxygen levels are becoming depleted.

4.) Death Phase - Rate of cell death is faster than regeneration. Death may accelerate and become exponential.

Answer:

Annyeonghaseyo Samyakk oppa!!

FRAGMENTATION: 1. An organism is split into fragments and each fragment grows into complete individual organism. So it is a systematic process occurred in a specific moment in a life span during reproduction . Eg. Spirogyra sp.

2. It occurs in multi cellular organisms with SIMPLE body organization.

3. In this case an organism breaks into pieces and each piece develops into new individual.

4. No specified cells are involved in fragmentation .

5. It is always a method of asexual reproduction.

REGENERATION: 1. Regeneration is the simple process of regrowth GENERALLY occurred due to some accident ie. damaging event. In this case organism allows partial ( when not RELATED to reproduction eg. Regeneration of tail in Lizard ) or complete ( when related to reproduction eg. Planaria sp. , starfish etc.) regrowth of tissue.

2. Regeneration occurs in fully differentiated multi cellular organisms with complex body organization.

3. In this process organism if breaks into pieces each piece may or may not develop into new individual.

4. Specialised cells proliferate and form a mass of cells. The cells from the mass differentiate to form different cell types and tissues.

5. It may or may not be a method of reproduction (depending on the organism and situation

Answer:

Its because of their ability to DIVIDE as there are 4 types which helps the ORGANS if there was only one TYPE and they wouldnt be able to divide then the tissues would only be able to HELP in some functions of the body

Explanation:

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ANSWER: ABILITY to divide

So the CORRECT OPTION is A

Answer:

The blastocyst is a structure formed in the early development of mammals. It possesses an INNER cell MASS (ICM) which subsequently FORMS the embryo. The outer layer of the blastocyst CONSISTS of cells COLLECTIVELY called the trophoblast.

ANSWER:

Answer:

1. c) deforestation

2. B) conservation

3. a) & b) since both are under government.

Explanation:

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ANSWER:

EXPLANATION:

to which QUES we have to ANSWR

Answer:

......there are very changes when the girls are MATURED their Voice CHANGE.

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.....Rajputana boy (๑・ω-)～♥”L(*OεV*)E

Answer:

Centrioles are found as SINGLE structures in CILIA and flagella in animal cells and some lower plant cells. ... Centrioles are absent from the cells of higher plants but NORMAL mitosis TAKES place and with satisfactory results.

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Answer:

Climate change heavily AFFECTS polar bear and their habitiats because they are not adapted/used to the warm weather. With the temperatures rising, MANY of the dens that the mothers build are MELTING and colapsing on top of them. They build those dens to give BIRTH in and to ALSO protect their cubs.

The FAILURE of the testes to descend into the SCROTUM causes sterility because sperm FORMATION does not OCCUR at the abdominal temperature. ... Sperm production is efficient at a temperature that is lower than the body temperature.

EXPLANATION:

REFER this............

ANSWER:

SORRY I don't KNOW HINDI

ANSWER:

can you PLEASE TELL me in English please

Explanation:

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Answer:

Scientists BELIEVE that about 25 of the known elements are essential to life. Just four of these – carbon (C), oxygen (O), hydrogen (H) and NITROGEN (N) – make up about 96% of the human body.

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ANSWER:

SRY UT but which TYPE of LANGUAGE is this.