Short Question Practice ( Question 1.2)

Question 1

the organelle in cytoplasm which is the site of protein synthesis

Answer 1

Ribosome

Question 2

The name of the bond that forms between amino acids in a protein molecule

Answer 2

Peptide

Question 3

The process by which DNA makes identical copies of itself

Answer 3

Replication

Question 4

The process when homologous chromosome pairs fail to separate during meiosis

Answer 4

Non-disjunction

Question 5

The permanent disappearance of species from Earth

Answer 5

Extinction

Question 6

A testable statement that may be accepted or rejected

Answer 6

Hypothesis

Question 7

The type of nucleic acid that carries a specific amino acid

Answer 7

tRNA

Question 8

an allele that does not influence phenotype when found in the heterozygous condition

Answer 8

Recessive

Question 9

Section of DNA molecule that codes for a specific characteristic

Answer 9

Gene

Question 10

The production of a genetically identical copy of an organism using biotechnology

Answer 10

Cloning

Question 11

Manipulation of genetic material of an organism to get desired changes

Answer 11

Genetic engineering

Question 12

Deliberate breeding of organisms for desired characteristics selected by humans

Answer 12

Artificial selection

Question 13

Explanation that a species will under go a long period without physical change followed by a short period of rapid physical change

Answer 13

Punctuated equilibrium

Question 14

Phase of meiosis where homologous chromosomes separate and start moving towards opposite poles

Answer 14

Anaphase 1

Question 15

Defect in cell division that leads to down Syndrome

Answer 15

Non disjunction

Question 16

Chromosomes that carry the same set of genes

Answer 16

Homologous

Question 17

2 or more alternative forms of a gene at the same locus

Answer 17

Alleles

Question 18

Structure responsible for pulling chromosomes to poles of an animal cell during cell division

Answer 18

Spindle fibres

Question 19

Phase in cell cycle that occurs before cell division

Answer 19

Interphase

Question 20

A diagramatic representation showing possible evolutionary relationships between different species

Answer 20

Phylogenetic tree

Question 21

Type of vision shared by apes and humans that allow for depth perception

Answer 21

Stereoscopic/ Binocular

Question 22

Genetic crossing involving 2 different characteristics

Answer 22

Dihybrid cross

Question 23

Genetic disorder characterised by the absence of a blood clotting factor

Answer 23

Haemophillia

Question 24

Present day distribution of organisms

Answer 24

Biogeography