B1: Cells Flashcards Preview

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Flashcards in B1: Cells Deck (18):
1

What does the nucleus do?

It controls the activities of the cell

2

What does the nucleus contain?

The genes on the chromosomes that carry instructions for making proteins needed to build new cells or organisms

3

What is a cytoplasm?

Where chemical reactions take place

4

What does the cell membrane do?

Controls what goes in and out the cell

5

What are mitochondria?

Where aerobic respiration takes place

6

What are ribosomes?

Where protein synthesis takes place, making all the protein needed in the cell

7

What is a vacuole?

Contains cell sap

8

What do chloroplasts do?

Absorbs light to make food by photosynthesis

9

What is a cell wall?

The definite boundary or wall that is part of the outer structure in certain cells

10

What do animal cells contain?

Nucleus, cell membrane, cytoplasm, mitochondria, ribosomes

11

What do plant cells contain?

Nucleus, cell membrane, cytoplasm, vacuole, mitochondria, ribosomes, chloroplasts, cell wall

12

What do Eukaryotic cells have?

Cell membrane, cytoplasm and genetic material in a nucleus

13

What do Prokaryotic cells have?

Cytoplasm, cell membrane surrounded by a cell wall. The genetic material isn't in a distinct nucleus. It forms a single DNA loop

14

What is diffusion?

The net movement of a substance from an area of high concentration to low concentration

15

What is the rate of diffusion affected by?

The difference in concentration,the temperature and the available surface area

16

What substances move in and out of cells by diffusion?

Dissolved substances such as glucose and urea and gases such as oxygen and carbon dioxide

17

What are plasmids?

One or more small loop of DNA (normally found in Prokaryotic cells)

18

What is bacteria?

A Prokaryotic cell