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29 terms

Chapter 10 : Cell reproduction

STUDY
PLAY
chromosomes
structures in the nucleus that contain hereditary material
DNA
coded instructions that control cell activity
fertilization
the joining of an egg and a sperm
gene
segment of DNA controlling production of one protein
meiosis
nuclear division that forms sex cells
mitosis
formation of two nuclei with identical chromosomes
mutation
any permanent change in genetic material of a cell
RNA
a nucleic acid which carries the code for making proteins from the nucleus to the ribosomes
sexual reproduction
reproduction in which a new organism is produced when sex cells combine
zygote
cell that forms in fertilization
Most of the life of any cell is spent in a period of cell growth and development called______________.
interphase
Each human skin cell has _______pairs of chromosomes.
23
All of the following are composed to body cells except (bone, kidney, liver, sperm).
sperm
Human sex cells have ____________individual chromosomes.
23
In sexual reproduction, a new organism is produced when _________.
sex cells combine
By _____________, a new organism can grow from just a part of the parent organism.
meiosis
In _____________, a new organism grows from the body of the parent organism.
budding
The number of chromosomes in a sex cell of an organism is its ___________ chromosome number.
haploid
Meiosis consists of ____division(s) of the nucleus.
two
At the end of meiosis, _______cells have been produced from one cell.
four
Proteins are made of units called ________, which are linked together in a specific order.
amino acids
The code for making proteins is carried to the ribosomes by ________.
mRNA
In DNA, adenine always pairs with ____________.
thymine
Type of reproduction used to make body cells?
mitosis
Type of reproduction used to make sex cells?
meiosis
Type of reproduction that produces new cells with each having half as many chromosomes as the original cell?
meiosis
Type of reproduction that occurs in both plants and animals?
meiosis
Type of reproducion that has eight steps in cell division?
meiosis
Type of reproduction that has four steps in cell division?
mitosis