#Question id: 10256
#Unit 6. System Physiology – Plant
Both sucrose synthase and invertases can degrade sucrose for glycolysis, what will happen if one of the enzymes is absent or mutant?
#Question id: 5724
#Unit 8. Inheritance Biology
Species I is diploid (2n = 8) with chromosomes
AABBCCDD; related species II is diploid (2n = 8) with chromosomes MMNNOOPP. Individuals with the following sets of chromosomes represent what types of chromosome mutations?
A- AAABBCCDD B- AABBCCDDMNOP
C- AAABBCCDDD
#Question id: 3403
#Unit 11. Evolution and Behavior
Balancing selection is a type of natural selection that balances two or more alleles in population allows maintaining genetic diversity. Which of the following allowed to this type of selection?
A- Heterozygote has the highest level of Fitness than normal homozygote
B- If rare phenotypes are favored over common phenotypes
C- Introduction of new allele in to a population by mutation and allowed to higher fitness in individuals
D- One homozygote has a highest level of fitness than heterozygote and another homozygote
#Question id: 5060
#Unit 5. Developmental Biology
Proteoglycans are large molecules consist of core proteins with covalently attached glycosaminoglycan polysaccharide side chains. They play critically important roles in the delivery of the
#Question id: 7264
#Unit 5. Developmental Biology
The Dictyostelia social
amoebas are found in a wide range of soil habitats. They can come together to
form a fruiting structure, in which a proportion of cells are sacrificed to
build the stalk and the remainder differentiate into resilient dormant spores.
This multicellular life cycle is common to all Dictyostelids. It consists
of an interconnected programme of cell movement and cell differentiation, and
has been intensively studied in the model organism D. discoideum. Few mutants
(Column A) and phenotypes (Column B) are listed in the table given below.
Column A |
Column B |
A.
Loss of function of cAMP-dependent
protein kinase (PKA) |
i.
cell develop normally but unable to germinate |
B.
Loss of function of RegA |
ii.
Loose aggregate form |
C.
Loss of function of adenylate cyclase B |
iii.
No aggregation |
D.
Loss of function of gp80 |
iv.
accumulation of cAMP and PKA activation |