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24 terms

Cells!

Unit A, Chapter 1, Lesson 1-3
STUDY
PLAY
Cell Membrane
Surrounds the cells and keeps it together. It controls the substances passing into and out of the cell.
Vacuoles
Storage spaces for food and waste.
Nucleus
Directs the cells activity.
Mitochondria
Break down sugar to produce energy.
Chromosomes
Provide instructions for all the traits of the cell and organism. These are not normally visible in a normal cell.
Cytoplasm
A watery, jellylike substance that fills the cell and contains the other cell parts.
Cell Wall
Encloses the cell membrane and gives the cell a stiff shape. Only in a plant cell.
Chloroplasts
Contains chlorophyll, which absorbs energy from sunlight, allowing the plant celss to make food.
DNA
A complex chemical that contains information about every part of an organism.
Genes
Control specific cell activities and characteristics of every organism.
Mitosis
The process of cell division that produces new body cells with complete sets of chromosomes.
Meiosis
The process that forms reproductive cells.
Sexual Reproduction
Joining of male and female reproductive cells.
Dominant
Factor that determines the trait shown.
Recessive
The inherited characteristic often masked by the dominant characteristic and not seen in an organism.
Punnett Square
An easy way to find all the possible combinations of factors in the offspring of two parents.
Robert Hooke
One of the first people to study cells.
Three Parts of the Cells Theory
1. Cells are the basic building blocks of all living things. 2. All life activities take place in cells. 3. New cells are produced by existing cells.
Gregor Mendel
Was the first person to show how traits are passed from parents to offspring.
microscopes
What enabled Robert Hooke to see cells?
Plant cells have a cell wall and chloroplasts
Why do plant cells differ from animal cells?
halved
Meiosis is cell division in which the number of chromosomes is...
Dominant Traits:
Dimples, Cleft Chin, Detached Earlobes, Brown Eyes
Recessive Traits:
Widows peak, Attached Earlobes, Blue Eyes

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