NUCLEUS

Question 1

the largest organelle , It is usually spheroid to elliptical in shape , and typically about 5 μ in diameter .

Answer 1

the nucleus

Question 2

Most cells have a single nucleus, but there are exceptions

Answer 2

a nuclear / multinuclear

Question 3

no nucleus

Answer 3

a nuclear

Question 4

several nucleus

Answer 4

multinuclear

Question 5

It contains the chromosomes inside it and is responsible for the transmission of genetic traits and controls cell division and cellular functions and activities , Inside the nucleus is a small body known as the nucleus , The nucleus is surrounded by a membrane with small nuclear holes that act as a means of transport and exchange from the nucleus between the cytoplasm .

Answer 5

the nucleus

Question 6

Nuclear envelope , Nucleolus , Nucleoplasm

, Chromosomes

Answer 6

contents of the nucleus

Question 7

It consists of two layers of membranes surrounding the contents of the cell , It has holes that allow specific molecules to pass outside the nucleus .

Answer 7

nuclear envelope

Question 8

It is a dark and dense region that forms RNA
A place to manufacture (ribosomal RNA (rRNA)).
It fades upon cell division

Answer 8

nucleus

Question 9

It is the substance or liquid inside the nucleus

Answer 9

nucleoplasm

Question 10

They are convoluted bodies which are condensed chromatin , It contains the genetic material that is transferred from parents to children during reproduction

Answer 10

chromosomes

Question 11

DNA , Gene or allele , Chromatin , Chromosome

Answer 11

they are the genetic materials

Question 12

consist of a nucleotide replicate

Answer 12

nucleic acids

Question 13

ribose sugar , nitrogenous bases , phosphate group

Answer 13

contents of the nucleotide

Question 14

When nucleotide is bound together in chains it is known as

Answer 14

polynucleotide

Question 15

Ribose sugar plus nitrogen base equal to

Answer 15

nucleoside

Question 16

A nitrogenous base consisting of two rings

Answer 16

purines

Question 17

A single-ring nitrogen base

Answer 17

Pyrimidines

Question 18

deoxy ribonucleic acids

Answer 18

DNA

Question 19

ribonucleic acids

Answer 19

RNA

Question 20

in nucleus can leave

Answer 20

DNA

Question 21

leave the nucleus , its function at cytoplasm

Answer 21

RNA

Question 22

have two double helix nucleotide chains

Answer 22

DNA

Question 23

one nucleotide chains

Answer 23

RNA

Question 24

A.T.C.G. nitrogenous bases

Answer 24

DNA

Question 25

A.U.C.G. nitrogenous bases

Answer 25

RNA

Question 26

Deoxyribose sugar

Answer 26

DNA

Question 27

Ribose sugar

Answer 27

RNA

Question 28

Codes for synthesis of RNA and proteins

Answer 28

function of DNA

Question 29

Carries out instructions in DNA, assembles proteins

Answer 29

function of RNA

Question 30

one type only

Answer 30

DNA

Question 31

have three types

Answer 31

RNA

Question 32

mRNA , tRNA , rRNA

Answer 32

types of RNA

Question 33

Polynucleotide strands are found in the nucleus and mitochondria, which have a Thymine base

Answer 33

DNA

Question 34

have a complementary and antiparallel

Answer 34

DNA

Question 35

Nitrogenous bases are bound together by hydrogen bonds , which links nucleotide are phosphatic links

Answer 35

complementary of DNA

Question 36

Means that each thread is in the opposite direction

Answer 36

antiparallel

Question 37

Is the bond between the phosphate of one nucleotide 5’ and the hydroxyl group of the next nucleotide 3’

Answer 37

Phosphodiester Bond

Question 38

It is a single strand of polynucleotide found in the nucleus and cytoplasm having a base of Uracil instead of Thymine.

Answer 38

RNA

Question 39

Transferring the genetic code, storing the genetic information and passing it on from one generation to another, and gives the code to be translated into a protein in the cell by mRNA.

Answer 39

DNA function

Question 40

Storage and transmission of genetic information , Stimulus , The rRNA syntax , Protein synthesis .

Answer 40

the function of the RNA

Question 41

It carries messages in 'codon' form . to manufacture protein

Answer 41

m RNA

Question 42

AUG

Answer 42

its the start codon

Question 43

UAA,UAG, UGA

Answer 43

they are the terminal codon

Question 44

3 nucleotides

Answer 44

codon , anticodon

Question 45

Holds the code 'anticodon'

Answer 45

t RNA

Question 46

part of the ribosome structure and it has a role in protein synthesis

Answer 46

r RNA

Question 47

It is the genetic material during cell division and DNA folds and condenses in the form of a chromosome, and the length of one DNA molecule reaches about 2 meters and the diameter of the nucleus does not exceed 10 microns, so it takes a space inside the nucleus and wraps more than 16 thousand times (super coiled) .

Answer 47

chromosome structure and nature

Question 48

Each chromosome has a region associated with the spindle, at the centromere cell division Each chromosome consists of 2 chromatids when dividing two lengths in the Centromere region Each Chromatid has two Telomere arms The first is short over the Centromere called p arm The other is long below the Centromere called q arm

Answer 48

chromosome structure and nature

Question 49

Acrocentric 'Terminal' , Submetacentric 'Near medial' , Metacentric 'medial' , Telocentric 'final' .

Answer 49

terms according to length and position of centromeres

Question 50

similar pairs of chromosomes

Answer 50

homologues chromosomes

Question 51

there is two types of chromosomes

Answer 51

sex chromosomes , autosomal chromosomes

Question 52

XX sexual chromosomes

Answer 52

females sexual chromosomes

Question 53

XY sexual chromosomes

Answer 53

males sexual chromosomes

Question 54

Shape and number of chromosomes in eukaryotic cells are different depending on the type

Answer 54

karyotype

Question 55

It is the genetic material outside the cell division, that is, in the interphase, which is a complex structure of protein and DNA that is not coiled without condensation

Answer 55

chromatin

Question 56

euchromatin and heterochromatin

Answer 56

they are types of chromatin

Question 57

the active part (copies and synthesizes protein)

Answer 57

euchromatin

Question 58

the inactive part is usually dense ( neither used nor copied, found in (Telomere - Centromere) area . )

Answer 58

heterochromatin

Question 59

The DNA strand binds to both histone and non-histone proteins , Nucleosome = DNA + Histone proteins , Histone proteins work by tightly regulating and wrapping DNA and converting it from chromatin filaments to chromosomes inside the nucleus of real cells , Non-histone proteins regulate gene activity and support their synthesis

Answer 59

DNA binding to proteins

Question 60

Nucleosome = DNA + Histone proteins , Histone proteins act on bundles of eukaryotic genetic material and are in the form of Histone octamer. These octets consist of H3, H4, H2B, H2A except for H1

Answer 60

Nucleosome

Question 61

DNA is the complete combination of

Answer 61

genome

Question 62

it is part of the DNA in the chromosome In eukaryotes It has a special place on the chromosome The place assigned to it is called locus Each gene has its own code, which is a special sequence of amino acids that is transcribed by rRNA, tRNA, and mRNA.

Answer 62

gene