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ایمیل

شماره موبایل

Bacteria are:

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only Filamentous

multicellular

protophyte

unicellular

Eukaryotes

The terminal part of the large intestine is

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the descending colon

the pylorus

the Cecum

the duodenum

the rectum

RNA is made up of:

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nucleotides- nucleus

glycides

enzymes

vitamins and carboxylic acids

fatty acids

Mitochondria are important:

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incellular respiration

in cellular secretion

in phagocytosis

in cellular digestion

in protein synthesis

The process by which a change takes place in a gene heritable, it is said:

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splicing

nick translation

alternative splicing

mutation

transduction

The advantage of sexual reproduction:

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it consists in having spread the plants on the emerged lands

consists in the fact that it occurs more frequently than asexual reproduction

does not exist

consists in the fact that it increases genetic variability organisms

it is less than that of asexual reproduction

what is the product of anaerobic glycolysis starting from a molecule of glucose?

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2 molecules of pyruvic acid

2 molecules of glycerol

3 molecules of acetyl Coenzyme A

3 molecules of lactic acid

a molecule of citric acid

Blood arrives at the left atrium:

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from the inferior vena cava

slightly oxygenated

from the aorta

very oxygenated

rich in carbon dioxide

The male reproductive organs of the flower are called:

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stomata

petals

pistils

sepals

stamens

Two successive cycles of cell divisions not separated by a phase of DNA synthesis are called:

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double mitosis

mitosis

meiosis

interphase

anaphase

In the circulatory system there are the following in order:

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distribution, pump, collection vessels

pump, collection, distribution and exchange vessels

pump, distribution, collection and exchange vessels

pump, exchange, distribution and collection vessels

pump, distribution, exchange and collection vessels

If the function of ribosomes in a cell is selectively blocked, there is an immediate arrest of:

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breathing

translation

DNA duplication

glycolysis

transcription

Steroid hormones:

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they are produced by the pancreas

they are exclusively testosterone and progesterone

are produced by the adrenal cortex, gonads and placenta

they are produced exclusively by the gonads

They are produced by the adrenal medulla and the thyroid gland

Fatty acids consist of:

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exose and pentose

long chains of amino acids

triglycerides

acetic acid and uric acid

hydrocarbon chains

Consider a phospholipid consisting of a head and two tails. Which of the following statements is incorrect?

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The head is always positively charged

the head contains a phosphate group

the tails are hydrophobic

the head is hydrophilic

the head contains a glycerol molecule

What is meant by the term orbital?

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the position of the electron

a circle around the atom

the maximum distance of the orbit with the most energy

the orbit described by the electron around the nucleus

the region of space in which the probability of find the electron

Identify, among the following substances, the strong acid:

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acetic acid

carbonic acid

sodium hydroxide

oleic acid

hydrochloric acid

The water molecules are:

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none of the other answers

apolar

totally dissociated into ions

polar

acidic

What is meant by organic chemistry?

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the study of nitrogen compounds

The study concerning the relationship between chemistry and the kingdom mineral

The study of carbon compounds

The study of the processes that take place in animal organs

The study of the relationship between chemistry and the kingdom animal and vegetable

Transfers always take place in redox reactions

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nucleons

neutrinos

electrons

neutrons

protons

A millimole is:

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a

b

c

d

e

The compound KH corresponds to:

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potassium hydronium

potassium hydride

crypto hydroxide

potassium hydroxide

potassium hydrate

The chemical properties of an atom are determined by its:

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atomic weight

atomic number

number of neutrons

metallic character

mass number

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it does not reduce or oxidize

yields two electrons

is reduced because it acquires two electrons

oxidizes and shrinks at the same time

oxidizes

Two electrons in the same orbital differ in

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their quantum spin number

their principal quantum number

their speed

their mass

the quantum number of the angular momentum

What are the bonds between the carbon atoms in alkalies

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A

B

C

D

E

Indicate in which of the following substances the binding is mainly due to electrostatic forces

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Br2

sodium

diamond

sodium chloride

hydrochloric acid

Indicate for the equation of state of ideal gases the definition cor straight:

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it is valid for small molecules

it is valid only for one mole of gas

is valid for point-like molecules that do not interact

is valid for reacting gases

it is valid for gases dissolved in water

Which of the following solutions has the lowest pH

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0.2 M HCl

0.1 M NaOH

0.1 M HCl

0.8 M HCl

0.01 M HCl

Hydrogen sulfide is:

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H2SO4

HNO3

H2SO3

H2S

HNO2

Necessary and sufficient condition for a quadrilateral to be in writable in a circumference is that

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the sum of the opposite angles is 120°

the adjacent corners are complementary

the opposite corners are complementary

the opposite corners are supplementary

he adjacent corners are additional

Can the decimal logarithm of a number be negative?

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Yes, if the number is less than 1/10

Yes, if the number is less than base 10

Yes, if the number is negative

Yes, if the number is positive and less than 1

No, never

For which values of X we have:

x²>36

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x>-6

-6

x6

x>36

x>6

What are the coordinates of the intersection points of the curve of equation

y²=x+24

with the line of equation x= 1?

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a

b

c

d

e

The arithmetic mean of the numbers 3, 4, 5, 6, 7 is:

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3

2

5

0

1

The cosine of the 110 ° angle is:

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positive

greater than the sine of the 110 ° angle

negative

equal to the cosine of the angle of 290

greater than 1/2

The expression:

---

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7,350

4,735

7,354

4,530

4,537

A power difference is applied to a resistance of 150 ohms le of 15 V. The current flowing through the resistance is

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1mA

0.1mA

1A

0.1A

10A

Two kilograms of water at a temperature of 80 ° C come in in a calorimeter containing one kilogram of water a 20 ° C. The equilibrium temperature reached after a certain time in the calorimeter is

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20°C

30°C

33°C

60°C

50°C

The mega prefix is equivalent to

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a

b

c

d

e

The third law of dynamics states that:

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body moving with uniform rectilinear motion is subject to a null force

each action of body A on body B corresponds to a reaction of body B on body A equal in intensity and opposite in verse

the weight force is a conservative force

a body subjected to a force acquires an acceleration proportional to this force

a body maintains its state of stillness or reptilian motion uniform mole until a force acts on it

Avogadro's number represents the number of molecules contained

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in one m3

in a mm3

In a mole

in a dm3

in one cm3

Stevino's law allows us to calculate

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the force of attraction between two bodies in a liquid state

the radius of curvature in a uniform circular motion

the centripetal acceleration in a parabolic motion

the relative displacement between two bodies moving uniformly accelerated

the pressure existing at a certain depth within one fluid column

When a body moves with uniform rectilinear motion:

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acceleration is variable

its speed is constant

its acceleration is constant other than zero

the force applied to the body is constant

its speed is zero

Three sailors peel a sack of potatoes in 1, 2 and respectively 4 hours.

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10hours

7hours

6hours

12hours

3hours

What number does the following series integrate

22-29-25-32-28-?

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39

38

29

35

What was the total turnover in Italy and Germany (France excluded) in the second semester of Year 1?

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About 130 million euros

About 90 million euros

About 40 million euros

About 60 million euros

About 70 million euros

Which of these arguments is correct from one point of view deductive

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Anna goes to the gym. Most of the children ne who go to the gym are brunette. So Anna is brunette.

If Anna went to the gym, and if all the other girls of the gym were brown, then Anna would be brown.

Anna is 6 years old. All 6-year-old girls are brown. So Anna is brunette.

Anna is 6 years old. Girls over 6 are non-brown. So Anna is brunette.

Anna is 6 years old. Girls over 6 are brown. So Anna is not brunette.

Which pair of numbers correctly completes the following figure

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a

b

c

d

e

A survey is conducted among all 1000 inhabitants of the town of Sparagna who are older than 55. The results show that 40% of them own a fridge, 25% of them own a TV, and 15% of them own both. Therefore, in the town of Sparagna

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among those who are younger than 55, less than 40% owns a fridge

among those who are older than 55, less than 45% owns a TV or a fridge

among those who are older than 55, 50% does not own a TV nor a fridge

among those who are younger than 55, more than 25% owns a TV

among those who are older than 55, more than 50% owns a TV or a fridge

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