exam

If I have an atomic number of 16 how many electrons are in the first shell or orbital?

A. 8

B. 18

C. 2

D. 4

C. 2

Nitrogen has an atomic number of 7. How many electrons does it have?
A. 3
B. 21
C. 7
D. 9

C. 7

The following is an example of a double covalent bond.
A. O2
B. Cl2
C. H2
D. N2

A. O2

The alkali metals have a valance charge of \____________?
A. 2
B. 1
C. 3
D. 4

B. 1

Isotopes are defined as atoms of the same element that have a different number of \_____ in the nucleus.
A. electrons
B. neutrons
C. protons
D. amazons

B. neutrons

In the periodic table the group after VIIA is the \______
A. inert gases
B. halogens
C. alkali metals
D. transition metals

B. halogens

Organic compounds always contain:
A. carbon and nitrogen
B. carbon and helium
C. carbon and oxygen
D. carbon and hydrogen

D. carbon and hydrogen

An example of monosaccharide is
A. maltose
B. starch
C. sucrose
D. glucose

D. glucose

The building blocks of proteins are
A. amino acids
B. steroids
C. fatty acids
D. soaps

A. amino acids

All refer to DNA except
A. stores genetic information
B. deoxyribose as its sugar
C. single stranded
D. helix form

C. single stranded

Acids react with metals and form
A. bases
B. salts
C. proteins
D. lipids

B. salts

The overall reaction of cellular respiration is
A. glucose + oxygen -\> carbon dioxide + water + energy
B. maltose + oxygen -\> carbon dioxide + water + energy
C. sucrose + oxygen -\> carbon dioxide + water + energy
D. lactose + oxygen -\> carbon dioxide + water + energy

A. glucose + oxygen -\> carbon dioxide + water + energy

The organelle in which the Krebs cycle occurs
A. ribosomes
B. lysosome
C. nucleus
D. mitochondria

D. mitochondria

To view bacteria for its form or shape one would use the

A. high power objective (40x)

B. low power objective (10x)

C. oil immersion objective (100x)

D. scanning objective (4x)

C. oil immersion objective (100x)

The function of this organelle is protein synthesis
A. ribosome
B. lysosome
C. plastids
D. cilia

A. ribosome

The Golgi body function as a (n)
A. warehouse and repacking plant
B. discount store
C. outlet mall
D. grocery store

A. warehouse and repacking plant

In mitosis the chromosomes are aligned in the center of the cell during

A. anaphase

B. telophase

C. metaphase

D. prophase

C. metaphase

Meiosis occurs in which organs
A. reproductive
B. digestive
C. respiratory
D. urinary

A. reproductive

A disease caused by a deficiency of thiamine is
A. anemia
B. scurvy
C. beriberi
D. thalassemia

C. beriberi

Disease caused by vitamin D deficiency
A. night blindness
B. rickets
C. scurvy
D. cramps

B. rickets

The following are all parts of the digestive system except
A. esophagus
B. pancreas
C. stomach
D. bladder

D. bladder

The blood first enters the heart through the
A. vena cava
B. pulmonary artery
C. aorta
D. left auricle

A. vena cava

The nerve leading from the eye to the brain
A. tympanic
B. optic
C. auditory
D. spinal

B. optic

Insulin is produced in the
A. kidney
B. pancreas
C. liver
D. gall bladder

B. pancreas

The knee cap is called the
A. femur
B. tarsal
C. frontal
D. patella

D. patella

The adrenal glands are closest to the
A. liver
B. kidney
C. stomach
D. ovary

B. kidney

The causative agent of cholera is
A. vibrio-cholerae
B. streptococcus
C. bordatella pertussis
D. pneumococcus

A. vibrio-cholerae

Scarlet fever is caused by
A. streptococcus
B. meningococcus
C. pneumococcus
D. salmonella

A. streptococcus

All of the following are caused by a virus except
A. cold
B. flu
C. measles
D. whopping cough

D. whooping cough

The carrier of malaria
A. fly
B. wasp
C. mosquito
D. flea

C. mosquito

Today we live in the \________ Era
A. Paleozoic
B. Mesozoic
C. Cenozoic
D. Archeozoic

C. Cenozoic

If a child is one month old he would be in his

A. neonatal

B. infancy

C. childhood

D. adolescence

B. infancy

In pea plants yellow Y is dominant over green y. A hybrid yellow plant would be written as
A. Yy
B. YY
C. yy
D. YX

A. Yy

If parents have the blood type AA and OO the children would be

A. AB

B. AA

C. OO

D. AO

D. AO

The \____ is the functional unit of the kidney
A. nephron
B. neuron
C. proton
D. neutron

A. nephron

Protein is obtained from this food group
A. meat
B. bread
C. dairy
D. fruit

A. meat

When a beam of light enters a denser medium and is bent toward the normal is called the
A. Law of reflection
B. Law of refraction
C. Law of rarefaction
D. Law of reflex

B. Law of refraction

Radio waves are at one end of the electromagnetic spectrum with \_____ rays at the other end
A. infrared
B. ultraviolet
C. gamma
D. X

C. gamma

Iron -53 has a half-life of 9 minutes. How many grams would be left after 27 minutes starting with 100 grams?
A. 50
B. 25
C. 12.5
D. 6.25

C. 12.5

When blue litmus turns red this is an indicator for
A. acid
B. base
C. salt
D. soap

A. acid

Ohms law is related to
A. talc
B. diamond
C. quartz
D. wavelength

B. diamond

Which is the acid that is the most commonly found at home?
A. H2SO4
B. HCl
C. HNO3
D. CH3COOH

D. CH3COOH

Two elements are composed of atoms with the same atomic number but different mass numbers A. compound

B. isotopes

C. neutrons

D. identical

B. isotopes

The general formula for organic acid
A. RCOOR
B. ROH
C. ROR
D. RCOOH

D. RCOOH

The bond of a water molecule is
A. covalent non-polar
B. coordinate covalent
C. covalent polar
D. electrovalent

C. covalent polar

How many kilocalories are required to change 2000 grams of H2O from 20 degrees C to 30 degrees C?
A. 20
B. 36
C. 10
D. 30

A. 20

Give the gram molecular of C6H12O6. C\=12

H\=1

The end product of the Krebs Cycle
A. CO2 and water
B. urea and bile
C. lactic acid and pyruvic acid
D. ketones and acetones

A. CO2 and water

The sex of the child is determined by the
A. male
B. female
C. either male or female
D. neither male or female

A. male

The basic unit of the lung
A. capillary
B. alveoil
C. bronchi
D. trachea

B. alveoli

The heart is composed of \______ muscle
A. smooth
B. skeletal
C. cardiac
D. striated

C. cardiac

Sperm have haploid number of chromosomes due to
A. mitosis
B. meiosis
C. fertilization
D. cleavage

B. meiosis

\________ stores starch in green plants
A. pith
B. phloem
C. xylem
D. cambium

A. pith

\________ is the top portion of the pistil
A. style
B. stigma
C. ovary
D. sepal

B. stigma

Which is most plentiful in the air?
A. nitrogen
B. oxygen
C. carbon dioxide
D. hydrogen

A. nitrogen

Passive immunity to diphtheria may be achieved by taking an injection of a (n)
A. vaccine
B. toxin
C. toxoid
D. antitoxin

D. antitoxin

The cloud that occurs at the greatest height
A. cirrus
B. cumulus
B. nimbus
D. stratus

A. cirrus

The universal blood donor is
A. AB
B. A
C. B
D. O

A. O

The universal recipient is
A. AB
B. A
C. B
D. O

A. AB

The vitamin that helps in the blood coagulation
A. C
B. D
C. E
D. K

D. K

Bacilli are bacteria shaped like
A. rods
B. beads
C. spirals
D. cocci

A. rods

The bond formed between two amino acids
A. peptide
B. covalent
C. polar
D. non-polar

A. peptide

The membrane system found in plants
A. vacuoles
B. microtubules
C. plastids
D. centrioles

C. plastids

Cell -> tissue_________ -> organ system

A. organ

B. organelle

C. population

D. community

A. organ

The Mesozoic Era is the age of the
A. fish
B. reptiles
C. amphibians
D. humans

B. reptiles

The father of the genetics is
A. Pasteur
B. Newton
C. Mendel
D. Curie

C. Mendel

Water vapor in the air is called
A. dew
B. rain
C. breeze
D. humidity

D. humidity

The boundary where two air masses meet is a
A. drift
B. current
C. front
D. stream

C. front

Which of the following bodily substances is a catalyst?
A. bile
B. water
C. enzyme
D. hemoglobin

C. enzyme

The largest part of the central nervous system is
A. cerebellum
B. medulla
C. cerebrum
D. spinal cord

D. spinal cord