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1
how many human chromosomes comprise a chemical substance called "DNA" "Deoxyribonucleic Acid"
23 pairs
2
each nucleotide contains three different components
phosphate group , 5 carbon sugar, nitrogen bases
3
one phosphorus with 4 oxygen
phosphate group
4
five carbon sugar
deoxyribose
5
a nitrogen-containing base
pyrimidines (CT), purines (GA)
6
nucleic acids
DNA, RNA
7
is a large molecule composed of carbon, hydrogen, oxygen, nitrogen, and phosphorus.
nucleic acid
8
the building blocks of nucleic acids
nucleotides
9
A nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms
DNA (double stranded)
10
one of the three major macromolecules (along with the DNA and proteins) that are essential for all known forms of life.
RNA (single strand)
11
made a contribution to studying and analyzing the DNA of many different living things.
Erwin Chargaff
12
He found out that the DNA of all organisms had the same bases but the proportions differs from organism to another organism.
Erwin Chargaff
13
is the sequence of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) that determines the amino acid sequence of proteins.
genetic code
14
A sequence of three consecutive nucleotides in a DNA or RNA molecule that codes for a specific amino acid.
codon
15
Certain ____ signal the start or end of translation.
codons
16
When the DNA is copied during cell cycle, the process is called
replication
17
cell cycle
G1 (11 hours), S phase (8 hours), G2 (4 hours), M (1 hour)
18
Enzymes and other proteins are responsible for the process of replication.
dna polymerase
19
An enzyme begins the process by unzipping the double helix to separate the strands of DNA.
dna polymerase
20
(group of enzymes) is responsible to bond the new nucleotide together.
dna polymerase
21
When the complete process is done, it formed two complete molecules of DNA, each exactly the same as the original double strand.
dna polymerase
22
takes place in the cytoplasm of prokaryotes and in the nucleus of eukaryotes.
dna replication
23
is the most structurally varied molecule in which the human body contains at least 10, 000 different kinds of proteins.
protein
24
that occur in the body are large, complex molecules composed mainly of oxygen, hydrogen, carbon, and nitrogen.
proteins
25
are an essential part structure of cells.
proteins
26
are the building blocks of protein, which are made up of long chains of chemical units.
amino acids
27
there are __ different amino acids
20
28
regulate many physiological processes like insulin, which affects glucose transport into cells.
protein hormones
29
in the blood help as a blood clotting factor and transport molecule. For instance, hemoglobin.
proteins
30
acts as ion channels, carriers, and receptor molecules in the cell membrane.
protein
31
3 kinds of RNA in protein synthesis
messenger RNA (mRNA), ribosomal RNA (rRNA), transfer RNA (tRNA)
32
is a type of molecule of RNA that travels from the nucleus of the ribosomes in the cytoplasm, where the information in the copy is used for a protein product.
messenger RNA
33
is the RNA component of the ribosome and a cell's protein factories in all living cells.
ribosomal RNA
34
It provides a mechanism for decoding mRNA into amino acids and interacting with RNA.
ribosomal RNA
35
is an adaptor molecule composed of RNA, typically 73 - 93 nucleotides in length that brings amino acids from the cytoplasm to a ribosome to help make the growing protein.
transfer RNA
36
processes of producing protein from DNA
transcription , translation
37
DNA must be transported to the ribosome in the cytoplasm where protein synthesis takes place.
transcription
38
The ____ process occurs when the nucleotide sequence along the DNA is copied into a strand of mRNA.
transcription
39
The RNA polymerase is responsible for the alignment and binding together of the ribonucleotides that will create the RNA molecule.
transcription
40
In molecular biology and genetics, ____ is the process in which ribosomes in the cytoplasm or endoplasmic reticulum synthesize proteins after the process of transcription of DNA to RNA in the cell's nucleus. The entire process is called gene expression.
translation
41
the process by which DNA is copied to RNA
transcription
42
RNA is used to produce proteins
translation
43
is the permanent change in a genetic material
mutation
44
These are factors that can cause mutation such as exposure to ionizing radiations, carcinogens, or infections like bacteria and viruses.
mutagens
45
Mutation in the body or non- reproductive cells is called
somatic mutations
46
is an alteration of the nucleotide sequence of the DNA that makes up a gene.
germinal mutation
47
It refers to changes in the number of sets of chromosomes (ploidy) and changes in the number of individual chromosomes (somy) and their appearance.
chromosome mutation
48
5 chromosomal mutation
insertion , translocation , deletion , duplication , inversion
49
is a genetic material added from another chromosome.
insertion
50
happens when part of a chromosome breaks off and is combined to another chromosome.
translocation
51
This type of disorder is due to chromosomal level-mutation.
translocation
52
happens when there is a loss of part of a chromosome.
deletion
53
happens if there are extra copies of a part of a chromosome.
duplication
54
happens when the direction of a part of a chromosome is reversed.
inversion
55
genetic disorders
recessive disorders , sex-linked disorders , human genetic syndrome
56
happen when a child.receives two defective genes from each parent.
recessive disorders
57
are more common in men because they have only one X chromosome, so all defective genes on the chromosome will be expressed. For instance, blindness and hemophilia.
sex-linked disorders
58
may have few or too many chromosomes. For instance, •Cri du chat (deletion of chr.5), •William syndrome (deletion of chr.7), Down •Syndrome (Trisomy 21), •Edward Syndrome (Trisomy 18), •Patau Syndrome (Trisomy 13), •Klinefelter's Syndrome (XXY), and •Turner Syndrome (monosomy)
human genetic syndrome
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