USMLE Step 1 Mock Test 7 - Online MCQ Exam

Aphids kingdom is___________?

1 Mark(s)

Your Answer:

animalia animalia
hemiptera hemiptera
arthropoda arthropoda
aphidoidea aphidoidea

Two waves $y_1 = a \sin(\omega t - kx)$ and $y_2 = a \cos(\omega t - kx)$ are superimposed. The resultant amplitude is:

1 Mark(s)

Your Answer:

$a$ $a$
$2a$ $2a$
$a\sqrt{2}$ $a\sqrt{2}$
Zero Zero

The element with atomic number 26 will be found in group

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Your Answer:

A) 2 A) 2
B) 8 B) 8
C) 6 C) 6
D) 10 D) 10

The electrical energy supplied by charge Q in t seconds is:

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Your Answer:

V x I x t V x I x t
V x I V x I
I x t I x t
V x t V x t

Collenchyma cells provide:

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Your Answer:

Rigid support Rigid support
Water transport Water transport
Flexible support Flexible support
Photosynthesis Photosynthesis

Hepatic first pass metabolism is important in____________?

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Your Answer:

Drugs given IM Drugs given IM
Drugs taken orally Drugs taken orally
Drugs given IV Drugs given IV
None of the above None of the above

Following are used to produce silage in diary form __________?

1 Mark(s)

Your Answer:

bacteria bacteria
fungi fungi
algae algae
plants plants

In leucopenia, which cell type is predominantly involved ?

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Your Answer:

Erythrocytes Erythrocytes
Granulocytes Granulocytes
Eosinophils Eosinophils
Monocytes Monocytes

Which of the following borne on the exposed surface of fertile leaves __________?

1 Mark(s)

Your Answer:

Ovule Ovule
Seed Seed
Leave Leave
Flower Flower

The degree of dissociation of week electrolyte increases as________________?

1 Mark(s)

Your Answer:

Pressure increases Pressure increases
Dilution decreases Dilution decreases
Dilution increases Dilution increases
None None

Bacilillus subtilis is belong to following__________?

1 Mark(s)

Your Answer:

cocci cocci
Bacilli Bacilli
spiral spiral
diplococcus diplococcus

The late devonian and early carniferous seeds ferns some time collectively called _________?

1 Mark(s)

Your Answer:

Lygnopterids Lygnopterids
Cupules Cupules
Bryophytes Bryophytes
Pteridophytes Pteridophytes

Photographic plates are coated with a thin film of _________________?

1 Mark(s)

Your Answer:

AgNO3 AgNO3
AgI AgI
AgCl AgCl
AgBr AgBr

Biological organization is_____________?

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Your Answer:

simple simple
advance advance
complex complex
highly complex highly complex

During inspiration, the area of the thoracic cavity will:

1 Mark(s)

Your Answer:

increase increase
decrease decrease
contract contract
damage damage

Water from different sources has the same composition because of

1 Mark(s)

Your Answer:

A) law of conservation of mass A) law of conservation of mass
B) law of constant proportions B) law of constant proportions
C) Dalton’s theory C) Dalton’s theory
D) chemical bonding. D) chemical bonding.

The conversion of maltose into glucose is possible by the enzyme

1 Mark(s)

Your Answer:

A) zymase A) zymase
B) lactase B) lactase
C) maltase C) maltase
D) diastase D) diastase

Polychaeta species between_________?

1 Mark(s)

Your Answer:

5 to 10cm 5 to 10cm
4 to 20 cm 4 to 20 cm
2 to 10 cm 2 to 10 cm
3 to 6 cm 3 to 6 cm

About articaine, all are true except_____________?

1 Mark(s)

Your Answer:

Plasma half-life is 90 min Plasma half-life is 90 min
Is amide which is metabolized in liver Is amide which is metabolized in liver
Mandibular infiltration is more effective than nerve block in mandibular molar teeth
More breaks down causes more toxicity More breaks down causes more toxicity

In solenostele how many gaps in main cylinder __________?

1 Mark(s)

Your Answer:

One One
Two Two
Three Three
Four Four

Macracanthorhynchus hirudinaceus is__________?

1 Mark(s)

Your Answer:

40mm 40mm
60mm 60mm
80cm 80cm
90m 90m

Acoela phylum is__________?

1 Mark(s)

Your Answer:

xenacoelomorpha xenacoelomorpha
acoleomorpha acoleomorpha
animalia animalia
chordata chordata

The 10% rule in ecology states that:

1 Mark(s)

Your Answer:

All energy is transferred All energy is transferred
50% energy is transferred 50% energy is transferred
About 10% of energy transfers to the next trophic level
Energy increases at each level Energy increases at each level

The gravitational field is directed:

1 Mark(s)

Your Answer:

towards the earth towards the earth
away from earth away from earth
has no direction has no direction
in a specific direction making angle with earth

Which one of the following is polar but compound is non-polar?

1 Mark(s)

Your Answer:

H 2 O H 2 O
HCl HCl
Co 2 Co 2
NH 3 Answer NH 3 Answer

Lead and Zinc metals occur naturally as:

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Your Answer:

oxides oxides
sulphite ores sulphite ores
carbon ores carbon ores
chloride ores chloride ores

Thymosin proved effective against brain and:

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Your Answer:

liver cancer liver cancer
stomach cancer stomach cancer
lung cancer lung cancer
blood cancer blood cancer

What is the mass percent of silver in silver notrate, AgNO3?

1 Mark(s)

Your Answer:

64.5% 64.5%
65.6% 65.6%
63.5% 63.5%
61.5% 61.5%

Cell begin to pinch in middle___________?

1 Mark(s)

Your Answer:

telophase telophase
anaphase anaphase
metaphase metaphase
G phase G phase

SI unit of momentum is:

1 Mark(s)

Your Answer:

newton second (Ns) newton second (Ns)
θ θ
μ μ
λ λ

Modern periodic table has been divided in ___________ blocks?

1 Mark(s)

Your Answer:

2 2
4 4
8 8
7 7

As we move across the period the basic character of oxides:

1 Mark(s)

Your Answer:

increases increases
remains same remains same
decreases decreases
becomes zero becomes zero

A bit represents data using:

1 Mark(s)

Your Answer:

0, 1 0, 1
1, 2 1, 2
1, 10 1, 10
0, 10 0, 10

The longest earthworm in south Africa is__________?

1 Mark(s)

Your Answer:

6.7m 6.7m
8m 8m
9m 9m
2m 2m

Fungi obtain nutrients through:

1 Mark(s)

Your Answer:

Extracellular digestion and absorption Extracellular digestion and absorption
Photosynthesis Photosynthesis
Ingestion Ingestion
Chemosynthesis Chemosynthesis

The lowest energy orbital among the following is:

1 Mark(s)

Your Answer:

2s 2s
2p 2p
3s 3s
3p 3p

Maximum number of rectangular components are_____________?

1 Mark(s)

Your Answer:

1 1
2 2
3 3
4 4

The process of formation of solid mass in circulation from the constituents of normal flowing blood is called_____________?

1 Mark(s)

Your Answer:

Clot formation Clot formation
Thrombosis Thrombosis
Embolism Embolism
Infarction Infarction

If a rubber ball is taken to the bottom of a lake of depth 200m, its volume decreases by 0.1%. Bulk modulus of rubber is ($g=10, \rho=10^3$):

1 Mark(s)

Your Answer:

$10^9 Pa$ $10^9 Pa$
$2 \times 10^9 Pa$ $2 \times 10^9 Pa$
$10^8 Pa$ $10^8 Pa$
$5 \times 10^8 Pa$ $5 \times 10^8 Pa$

During depolarization of a neuron, which ions rush into the cell?

1 Mark(s)

Your Answer:

$K^+$ $K^+$
$Na^+$ $Na^+$
$Ca^{2+}$ $Ca^{2+}$
$Cl^-$ $Cl^-$

Binomial nomenclature adopted for animal by__________?

1 Mark(s)

Your Answer:

lamarck lamarck
george george
karl von Linne karl von Linne
abdul slaam abdul slaam

After the first three members, the next eight members of alkynes are:

1 Mark(s)

Your Answer:

solids solids
liquids liquids
gases gases
plasma plasma

When anyone of inputs is at 1, the value of output of OR gate will be:

1 Mark(s)

Your Answer:

2 2
1 1
3 3
0 0

The power of a water pump is 2 kW. If $g=10 m/s^2$, the amount of water it can raise in 1 minute to a height of 10 m is:

1 Mark(s)

Your Answer:

100 liters 100 liters
2000 liters 2000 liters
1200 liters 1200 liters
1000 liters 1000 liters

The standard vector symbol for flux density is ____________________?

1 Mark(s)

Your Answer:

M M
L L
H H
B B

The thick wall which surrounds each spore in sporangia is called:

1 Mark(s)

Your Answer:

sporangium sporangium
cyst cyst
gymnosperms gymnosperms
endospores endospores

A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide. She asked them to identify the test tube containing sodium hydroxide solution. Which one of the following can be used for the identification?

1 Mark(s)

Your Answer:

A) Blue litmus A) Blue litmus
B) Red litmus B) Red litmus
C) Sodium carbonate solution C) Sodium carbonate solution
D) Dilute hydrochloric acid D) Dilute hydrochloric acid

Which of the following is NOT true for a projectile motion?

1 Mark(s)

Your Answer:

Acceleration is constant Acceleration is constant
Path is parabolic Path is parabolic
Velocity is constant Velocity is constant
Total energy is conserved (ideal) Total energy is conserved (ideal)

If $\vec{A} = 2\hat{i} + 3\hat{j}$ and $\vec{B} = \hat{i} - \hat{j}$, then $\vec{A} + \vec{B}$ is:

1 Mark(s)

Your Answer:

$3\hat{i} + 2\hat{j}$ $3\hat{i} + 2\hat{j}$
$3\hat{i} - 2\hat{j}$ $3\hat{i} - 2\hat{j}$
$\hat{i} + 4\hat{j}$ $\hat{i} + 4\hat{j}$
$2\hat{i} + 2\hat{j}$ $2\hat{i} + 2\hat{j}$

Compton effect proves the________________?

1 Mark(s)

Your Answer:

Photon theory of light Photon theory of light
Dual nature of light Dual nature of light
Wave nature of light Wave nature of light
Uncertain nature of light Uncertain nature of light

What is the pH of orange juice?

1 Mark(s)

Your Answer:

0 0
1 1
2 2
3 3

Ozone depletion is caused by:

1 Mark(s)

Your Answer:

$CO_2$ $CO_2$
$O_2$ $O_2$
CFCs CFCs
$N_2$ $N_2$

The most common type of epilepsy in children is________________?

1 Mark(s)

Your Answer:

Grand mal epilepsy Grand mal epilepsy
Infantile spasm Infantile spasm
Petit mal Petit mal
None of the above None of the above

Which of the following is the use of Silver nitrate?

1 Mark(s)

Your Answer:

used as mordant in dyeing used as mordant in dyeing
used in photography and medicines used in photography and medicines
used in making green pigments used in making green pigments
All of these All of these

Which of the following used in treating asthma cough and cold ___________?

1 Mark(s)

Your Answer:

Ephedra Ephedra
Almonds Almonds
Albugo Albugo
Algae Algae

Which among the following compounds absorb carbon dioxide from air ?

1 Mark(s)

Your Answer:

lime water lime water
soda water soda water
salt water salt water
aerated drinks aerated drinks

Evaluating Your Answers

USMLE Step 1 Mock Test 7 : Question 1 of 56