# 0.3 Measurements and the metric system

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Measurements and the Metric System
Measurement Unit Abbreviation Metric Equivalent Approximate Standard Equivalent
Length nanometer nm 1 nm = 10 −9 m
• 1 mm = 0.039 inch
• 1 cm = 0.394 inch
• 1 m = 39.37 inches
• 1 m = 3.28 feet
• 1 m = 1.093 yards
• 1 km = 0.621 miles
micrometer µm 1 µm = 10 −6 m
millimeter mm 1 mm = 0.001 m
centimeter cm 1 cm = 0.01 m
meter m
• 1 m = 100 cm
• 1 m = 1000 mm
kilometer km 1 km = 1000 m
Mass microgram µg 1 µg = 10 −6 g
• 1 g = 0.035 ounce
• 1 kg = 2.205 pounds
milligram mg 1 mg = 10 −3 g
gram g 1 g = 1000 mg
kilogram kg 1 kg = 1000 g
Volume microliter µl 1 µl = 10 −6 l
• 1 ml = 0.034 fluid ounce
• 1 l = 1.057 quarts
• 1 kl = 264.172 gallons
milliliter ml 1 ml = 10 −3 l
liter l 1 l = 1000 ml
kiloliter kl 1 kl = 1000 l
Area square centimeter cm 2 1 cm 2 = 100 mm 2
• 1 cm 2 = 0.155 square inch
• 1 m 2 = 10.764 square feet
• 1 m 2 = 1.196 square yards
• 1 ha = 2.471 acres
square meter m 2 1 m 2 = 10,000 cm 2
hectare ha 1 ha = 10,000 m 2
Temperature Celsius °C 1 °C = 5/9 × (°F − 32)

there are 3 trimester in human pregnancy
I don't know answer of this question can u help me
ROHIN
yes
Bisa
what is a cell
what is genetic
I join
Janet
what are the branchas of biology
zoology, ecology
Millicent
biochemistry,cytology,herpetology...etc
R0se
genetics, microbiology,botany and embryology
what is a cell
cell is smallest unit of life. cells are often cell the building blocks of life...
the first twenty element
what are the characteristics of living things?
R0se
growth,respiration,nutrition,sensitivity, movement,irritability, excretion,death.
Obinna
What is the difference between adaptation and competition in animals
What is biology
Zamiil
Biology is the bronch of science which deals with the study of life is called biology
Aziz
what is the x in 300 stands for?
the properties of life
response to the environment, reproduction, homeostasis, growth,energy processing etc.....
Pushpam
hello.
Daniela
hi
MacPeter
Good
Thomas
what is reproduction
Tims
Reproduction is a fundamental feature of all known life,each individual organism exist as a result of re production.....or else Multiplying...
R0se
a complete virus particle known as
These are formed from identical protein subunitscalled capsomeres.
Pushpam
fabace family plant name
in eukaryotes ...protein channel name which transport protein ...
in bacteria ...chromosomal dna duplicate structure called
Pushpam
what is a prokaryotic cell and a eukaryotic cell
There are two types of cells. Eukaryotic and Prokaryotic cells. Prokaryotic cells don't have a nucleus or membrane enclosed organelles (little organs within that cell). They do however carry genetic material but it's not maintained in the nucleus. Prokaryotic cells are also one celled.
juanita
Prokaryotic cells are one celled (single celled).
juanita
Prokaryotic cells are Bacteria and Archea
juanita
Prokaryotic cells are smaller than Eukaryotic cells.
juanita
Eukaryotic cells are more complex. They are much bigger than Prokaryotic cells.
juanita
Eukaryotic cells have a nucleus and membrane bound organelles.
juanita
Eukaryotic cells are animals cells which also includes us.
juanita
Eukaryotic cells are also multicellular.
juanita
nice explaination
Amna
eukaryotic cells are individual cells .. but eukaryotes are multicellular organisms which consist of many different types of eukaryotic cells
Will
also eukaryotic cells have mitochondria. prokaryotic cells do not
Will
Good
John
in prokaryotes only ribosomes are present... in eukaryotes mitochondria ...glogi bodies ..epidermis .....prokaryotes one envelop but eukaryotes compartment envelop....envelop mean membrane bound organelles......
Pushpam
prokaryotic cell are cells dat have no true nuclei i.e no cell membrane while eukaryotic cell are cell dat have true nuclei i.e have cell membrane
Divine
grt
Thomas
we have 46 pair of somatic cell and 23 pair of chromosomes in our body, pls can someone explain it to me. pls
we have 22 pairs of somatic chromosomes and one pair of sex chromosome
Amna
thanks
Matilda
we have 23 pairs of chromosomes,22 pairs of somatic and one pair of sex chromosomes
Amna
23 chromosomes from dad & 23 chromosomes from mom 23 +23=46 total chromosomes
juanita
X & Y chromosomes are called sex cells, the very presence of a Y chromosome means the person is Male.
juanita
XX Female XY Male
juanita
If a Karyotype has more than 46 Chromosomes then nondisjunction occured. For example, having an extra chromosome 21 will cause Down Syndrome.
juanita
in mammal state the different vertebrae and their location in the body