There are 11 organelles in total,
vacuoles: they store water
Chloroplasts: trap energy from the sun to produce food for plant cell
Cell wall: provides support and protection to the cell membrane,
Cell membrane: thin flexible barrier around a cell, controls what enters/ leaves the cell
Nucleus: 'The control center', carries the DNA of the cell
Ribosomes: Found in all cells, their jobs are to make protein
Endoplasmic Reticulum: The internal delivery system of the cell
Golgi complex: Transports materials throughout the cell
Lysosomes: Break down food into particles the cell can use. another function is they destroy old or dying cells
Mitochondria: Breaks down food to make ATP
and last but not least cytoplasm a jelly like fluid in the cell that keeps the organelles suspended
A cell of the nervous system is <u>neuron.</u><u>.</u><u>.</u>
Answer:
Option D, has only a single opening
Explanation:
A gastrovascular cavity has only one opening. The food goes in and comes out of the same opening there by making it a two way digestive tract.
However, a digestive tube is a one way digestive tract where the food goes in from mouth (one end) and comes out of anus (second end) . It is also called as alimentary canal
Hence, option D is correct
Answer:
The preferable option will be - 1.
1. The fish using ventral fins as "feet" will be present in increasing numbers.
Explanation:
After many years, the fish who are using ventral fins as "feet" will be present in increasing numbers because -
We know that
- These pools are temporary pools made up of rainwater. These pools do not last for longer times.
- Some fish have developed their ability to use their ventral fin as feet and can travel from one temporary pool to others.
- So, after many years, more and more fish will develop that ability to survive.
- As we all know about "the survival of the fittest" theory so some of them won't be able to make it.
- To develop their ventral fin as their real feet will take thousands of years and some genetic modification. So, that won't happen in many years.
Answer:
Nowadays, liposomes have become very popular in carrying numerous molecules in cosmetic and pharmaceutical industries. In addition, in food and farming industries, it has been extensively studied that the use of liposome encapsulation to develop delivery systems. The new delivery system can entrap unstable compounds (such as antimicrobials, antioxidants, flavors and bioactive elements) and shield their functionality.
In recent years, liposomes are designed for advanced biotechnology product delivery systems, including antisense oligonucleotides, cloned genes, recombinant proteins and drugs. The delivery system using liposome has many benefits. For example, the solubility of lipophilic and amphiphilic drugs can be improved by loading them in liposomes.
Currently, because of severe side-effects and toxicity, quite a few drugs on the market can only be used in the direst situations. Many of these drugs have exceptional antimicrobial effect, however, the poor pharmacokinetic and pharmacodynamic properties limit their use. Drug encapsulation using liposomal or lipid drug delivery system can improve the problems mentioned above to such an extent. Therefore, the drugs can be brought into regular use with improved pharmacokinetic and pharmacodynamic properties.
Explanation:
https://www.creative-biostructure.com/pclass-liposomes-products-5.htm
