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Flashcards in DNA: The code of life Deck (156)
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1

Where do cells carry out various cellular activities?

Within the cytoplasm

2

What is the main thing that happens during cellular activities?

Useful substances such as water and nutrients enter the cell from the outside

3

What is removed from the cells?

Waste products

4

What is the cytoplasm?

A water solution that consists of a mixture of substances .

5

What substances does the cytoplasm contain?

dissolved salts
gases
proteins
carbohydrates
suspended fats

6

What are suspended in the cytoplasm of a cell?

cell organelles

7

What are ribosomes?

small, granular organelles
occur in rows on the surface of rough ER (endoplasmic reticulum) or in groups in the cytoplasm.

8

What is a ribosome made of?

RNA and Protein

9

What is the site of protein synthesis?

a ribosome

10

What is the control centre of the cell?

The nucleus

11

What activities does the nucleus control?

synthesis of proteins
transmits hereditary information into daughter cells during cell division

12

What surrounds the nucleus?

a double nuclear membrane with nuclear pores

13

What do the pores in the double nuclear membrane surrounding the nucleus do?

allow substances to move between the nucleus and the cytoplasm

14

What is nucleoplasm?

jelly-like substance that fills the nucleus

15

What does the chromatin network form during cell division?

chromosomes

16

What is the nucleolus?

the round thing inside the nucleus

17

What is the nucleolus composed of?

protein and RNA

18

What does RNA stand for?

ribonucleic acid

19

What is the stored RNA (in the nucleolus) involved in?

synthesis of proteins within the cell

20

What is the membrane which surrounds an animal cell called?

cell membrane

21

What are biological molecules that are essential for all life forms?

nucleic acids

22

What do nucleic acids include?

DNA and RNA

23

What does DNA stand for?

deoxyribonucleic acid

24

What does DNA make up?

the genes located on chromosomes

25

What is formed in the nucleus but funcitons in the cytoplasm?

RNA

26

Where is RNA formed?

in the nucleus

27

What are nucleic acids?

polymers

28

What are polymers made of?

smaller, similar building blocks called monomers

29

What are the monomers of nucleic acids called?

nucleotides

30

What three parts is one nucleotide made up of?

P (phosphate group)
S (sugar)
N (nitrogenous base)