Answer:
(d) Cell wall
Explanation:
The cell wall is a structure located on the outside of the cell membrane in the cells of plants, bacteria, fungi, and algae. It is a resistant, tough and flexible layer, which has the vital function of supporting the osmotic pressure inside the cell, preventing the cell from lysis when water enters. Besides, it has the function of giving rigidity, support and defining the shape of the cell.
Answer:
The options
a.social moral reasoning.
b.conventional moral reasoning.
c.postconventional moral reasoning.
d.preconventional moral reasoning.
The CORRECT ANSWER IS b.
b.conventional moral reasoning.
Explanation:
The conventional level of moral reasoning is particular of adolescents and adults. To think in a conventional way is to presume the morality of actions by contrasting them to society's opinions and standard.
In this case, the morality of an action relies majorly on peer acceptance.
Take for instance: I would turn down the act of drinking and driving due to what my friends will reason of me and my perception of belittling myself.
Conventional moral reasoning judges an action by its compliance to society's rules so as to promote social order just as in this case study.
Answer:
Option D
Explanation:
Cyanobacteria preserve its photosynthetic pigments in the thylakoids which allows masking of green of chlorophyll a and other accessory pigment i.e phycobiliproteins (phycocyanin, allophycocyanin and phycoerythrin).
Chlorophyll a is mainly responsible for harvesting light for photosynthesis. Phycocyanin is blue in color, allophycocyanin is blue in color and phycoerythrine is red in color. These together harvest light in the green, yellow and orange part of the spectrum which cannot be used by other phytoplankton species
Hence, option D is correct
Answer:
c. A chromosomal mutation can change the total number of chromosomes in the cell.
Explanation:
A gene mutation affects a single gene, and replication error is the main cause of gene mutation. A chromosomal mutation affects one part of chromosome or full chromosome. error in meiosis is the main cause of chromosomal mutation. Both mutations are responsible for a change in DNA. A chromosomal mutation leads to the change in total number of chromosomes in the cell.
