Answer:
1) give shape to cells lacking a cell wall;
2) allow for cell movement,e.g. , the crawling movement of white blood cells and amoebas or the contraction of muscle cells;
3) movement of organelles within the cell and endocytosis;
4) cell division
Explanation:
The answer should be true. As long as both forces are unbalanced, an object is going to move in the direction where the most force is being applied.
Answer:
Plasmid DNA play a important role for survival of a prokaryotic cell.
Option D is correct one.
Explanation:
In addition to the chromosome, many prokaryotes have plasmids, which are small rings of double-stranded extra-chromosomal ("outside the chromosome") DNA. Plasmids carry a small number of non-essential genes and are copied independently of the chromosome inside the cell. They can be transferred to other prokaryotes in a population, sometimes spreading genes that are beneficial to survival.
For instance, some plasmids carry genes that make bacteria resistant to antibiotics. (These genes are called R genes.) When the plasmids carrying R genes are exchanged in a population, they can quickly make the population resistant to antibiotic drugs. While beneficial to the bacteria, this process can make it difficult for doctors to treat harmful bacterial infections.
The correct answer is option lysosome and vacuole.
Both the type of cell, the plant as well as animal cells do have the lysosome and the vacuoles. The vacuoles in the plant cells are prominent and very important organelle, a central large occupies a lot of volume of the plant cell. In the animal cells, the vacuoles are smaller and large in number. Lysosomes are also present in both animal as well as the plant cell.
A cell wall is a specific feature of the plant cell. Centrioles are not found in all plant cells, but are present in all animal cells. Chloroplast is the organelle, where the photosynthesis takes place, as animal cells do not perform photosynthesis, they do not have chloroplasts.
Answer:Una vacuola es un orgánulo celular presente en todas las células eucariotas vegetales. También aparece en algunas células procariotas y eucariotas animales. Las vacuolas son compartimentos cerrados o rodeados por la membrana plasmática ya que contienen diferentes fluidos, como agua o enzimas, aunque en algunos casos puede contener sólidos, por ejemplo azúcares, sales, proteínas y otros nutrientes. La mayoría de las vacuolas se forman por la fusión de múltiples vesículas membranosas. El orgánulo no posee una forma definida, su estructura varía según las necesidades de la célula en particular.
La célula vegetal inmadura contiene una gran cantidad de vacuolas pequeñas, que aumentan de tamaño y se van fusionando en una sola y grande a medida en que la célula va creciendo. En la célula madura, el 90 % de su volumen puede estar ocupado por una vacuola, con el citoplasma reducido a una capa muy estrecha junto a la pared celular.
Explanation:
