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Scientific inquiry
control, inference, hypothesis, quantitive data, bar graph, qualitative data, scientific law, line graph
22
Biology
10th Grade
11/28/2009

Additional Biology Flashcards

 


 

Cards

Term

 





Control



 

 

Definition


The CONTROL is the part of the experiment in which the conditions are kept constant. An unchanging variable in an experiment.

 

 


 


Term

 

 

 

Hypothesis

Definition

A HYPOTHESIS? is a possible answer to a scientific question.

Term

 

 

Haploid

Definition



A cell that only contains one set of chromosomes. Meiosis produces haploid cells. Human sperm cells, 

egg cells. contains only one set of chromosomes

Haploid = 1n

 

Term

 

 

Mitosis

Definition

-Division of the nucleus

-Process by which cells make a duplicate set of chromosomes 

Cell division has 2 parts: 

Division of nucleus (M Phase)

Division of Cytoplasm.

Term

 

 

Independent Assortment

Definition

During meiosis

the random distribution of genes from different chromosomes to the gametes.

(pg. 154)

Term

 

 

 

G1 Phase

Definition
First Stage of interphase Offspring cells grow to mature size (cell growth) 
Term

 

 

G2 Phase

Definition

3rd Stage of interphase.

Cell prepares for cell division.

Term

 

 

Meiosis

Definition

Meiosis only takes place in testes & ovaries  

It is the process by which sperm and eggs are formed with 1/2 the number # of chromosomes

Term

 

 

S-Phase

Definition

* 2nd stage of interphase.

-Cell DNA is copied.

Term

 

 

 

Asexual Reproduction

Definition

Producing offspring from ONE parent.

Does not usually involve meiosis or union of gametes:

**** Genetically identical to parent.

Term

Sexual Reproduction

Definition

Producing offspring 

[Through meiosis and the union of sperm & egg]

with combination of genetic material from 2 parent organisms. (pg. 156)

Term

 

 

Diploid

Definition

1n + 1n=2n 

2n=diploid

a cell that contains both  chromosomes of homologous pair.

-cells that have 2 SETS of chromosomes all normal human cells (except reproductive cells)

Term

 

 

 

Binary Fission

Definition

division of prokaryotic cell (lacks a nucleus and membrane bound organelle)

into 2 offspring cells:

1) prokaryotic cell

2)copied 

3) cell begins to divide

4)2 identical haploid cells

Term

 

 

 

Anaphase

(always)

Definition
3rd phase of mitosis in which chromosomes separate at the centromere and slowly move centromere first toward opposite poles of dividing cell. 
Term

Telophase

(tristan)

Definition

4th Final phase of MITOSIS 

chromosomes lengthen chromosomes reach opposite poles of the cell and the cytoplasm begins to divide.

Term

 

 

 

Oogenisis

Definition

production of eggs.

Term
What are the phases of the cell cycle? Describe each .
Definition

-G           cell growth


- S          DNA replication


-G2        preparation for cell division

Term

 

 

 

Autosome

Definition

chromosomes in body cells 

44- are autosomes 2 are sex chromosomes

A chromosome that is not a  SEX chromosome is a autosome.

Term

 

 

 

 

Spermatogenesis

Definition

 

 

 

Production of sperm.

Term

 

 

 

Crossing over

Definition
 crossing over is a way that chromosomes randomly mix up genetic traits.
Term

 

 

Cytokinesis

Definition

The division of the cytoplasm of the cell.

 

Cyto= Cytoplasm


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