cells and meiosis ect

Question 1

what is mitosis

Answer 1

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Question 2

what is meiosis

Answer 2

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Question 3

what are eukaryotes cells

Answer 3

an organism with complex cells, or a single cell with a complex structure. In these cells, the genetic material is organized into chromosomes in the cell nucleus. Animals, plants, algae and fungi are all eukaryote

Question 4

what are prokaryotes cells

Answer 4

they are unicellular organisms that lack organelles they do not have a nucleus, but, instead, generally have a single chromosome: a piece double-stranded DNA located in an area called the nucleoid.

Question 5

what is the cell cycle

Answer 5

it is body cells in multicellular organisms divide to produce new cells. The stage of the cell cycle when the cell divide is called mitosis.

Question 6

The cell cycle

Answer 6

The cell cycle
G1 phase. Metabolic changes prepare the cell for division.
S phase. DNA synthesis replicates the genetic material.
G2 phase. Metabolic changes assemble the cytoplasmic materials necessary for mitosis and cytokinesis.
M phase. A nuclear division (mitosis) followed by a cell division (cytokinesis).

Question 7

What are microscopes

Answer 7

This instrument allows a scientist or doctor to magnify an object to look at it in detail. Many types of microscopes exist, allowing different levels of magnification and producing different types of images. Some of the most advanced microscopes can even see atoms.

Question 8

Light microscopes

Answer 8

A light microscope is an instrument that uses visible light and magnifying lenses to examine small objects not visible to the naked eye, or in finer detail than the naked eye allows.

Question 9

electron microscopes

Answer 9

The electron microscope is a type of microscope that uses a beam of electrons to create an image of the specimen.gg

Question 10

What is magnification

Answer 10

is how many times bigger the image is

Question 11

What is the equation for magnification

Answer 11

magnification = measured size (divide) actual size

Question 12

what is the equation for total magnification

Answer 12

total magnification = eyepiece lens magnification x objective lens magnification

Question 13

converting magnification

Answer 13

microscopes can see such a tiny thing that it is useful to use standard for.
millimetre (mm) to micrometres (um)x 1000
micrometer (um) to nanometer (nm) x1000
nanometer (nm) to picometer (pm) x1000
to go back the other way you just divide by 1000

Question 14

gametes

Answer 14

Gametes are sex cells. The male gametes are the sperm, and the female gametes are the eggs.
Gametes contain one set of genetic information, while body cells contain two sets of genetic information.

Question 15

stem cells

Answer 15

Stem cells are a class of undifferentiated cells that are able to differentiate into specialized cell types. Commonly, stem cells come from two main sources: Embryos formed during the blastocyst phase of embryological development (embryonic stem cells) and. Adult tissue (adult stem cells).

Question 16

plant stem cells

Answer 16

in plants, the only cells that divide by mitosis are found in the plant tissue called meristems. Meristems produce unspecialised cells that are able to divide and form any cell type in the plant, they act like embryonic stem cells.