Biology 1 Flashcards Preview

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Flashcards in Biology 1 Deck (48):
1

Human and animal cells have which parts?

Nucleus, Cytoplasm, Cell membrane, Mitochondria, Ribosomes

2

Function of the Nucleus

Control activities in the cell

3

Function of the Cytoplasm

Where chemical reactions take place

4

Function of the Membrane

Controls the passage
of substances into and out of the cell

5

Function of the Mitochondria

Where most energy is
released in respiration

6

Plant and algal cells have which extra parts

Chloroplasts, Cell wall, Permanent vacuole

7

Function of the Cell Wall

Strengthen the cell

8

Function of the Chloroplasts

Absorb light energy to
make food

9

Function of the Vacuole

Store cell sap

10

Bacterial cells consist of what parts

Cytoplasm, membrane, cell wall

11

Describe the nature of how genes are located in bacterial cells

The genes are not located within a nucleus

12

Yeast consist of what parts

Cytoplasm, membrane, cell wall

13

Describe diffusion in terms of the movement of particles and the nature

Diffusion is the spreading of the particles of a gas, or
of any substance in solution, resulting in a net
movement from a region where they are of a higher
concentration to a region with a lower concentration.
The greater the difference in concentration, the faster
the rate of diffusion.

14

How does oxygen pass through cell membranes

Via diffusion

15

A tissue is made up of what

cells

16

Muscular tissue has what function

contract to bring about movement

17

Glandular tissue has what function

Produce substances such as enzymes and hormones

18

Epithelial tissue has what function

Covers some parts of the body

19

What are organs made from

tissues

20

what tissue does the stomach contain

Muscular, glandular, epithelial

21

Why does the stomach have muscular tissue

to churn the contents

22

Why does the stomach have glandular tissue

to produce digestive juices

23

why does the stomach have epithelial tissue

to cover the outside and inside of the stomach

24

Name an organ system

Digestive system

25

Name two glands in the digestive system

Pancreas and salivary glands

26

Why does the digestive system have glands

To produce digestive juices

27

What function do the stomach and small intestine both serve to the digestive system

To digest

28

Why does the digestive system have the liver

To produce bile

29

What does the small intestine specifically do

Absorbs soluble food

30

What does the large intestine do?

Absorbs water from undigested food, producing faeces

31

Name 3 plant organs

Stems, roots and leaves

32

Name 3 examples of plant tissue

Epidermal, Mesophyll, Xylem and ploem (they have the same function)

33

Function of epidermal tissues

Cover the plant

34

Function of mesophyll

Carries out photosynthesis

35

xylem and phloem

Transport substances around the plant

36

Green plants and algae use light energy mainly for what

food

37

They obtain the raw materials for photosynthesis from where?

Air and the soil

38

Reproduce the equation for photosynthesis

carbon dioxide+water ---> glucose + oxygen (note that there should be light energy above the arrow)

39

Light energy is absorbed by what substance

Chlorophyll

40

Where is chlorophyll found

chloroplasts

41

How is the light energy used in photosynthesis

light energy is used by converting carbon dioxide
(from the air) and water (from the soil) into
sugar (glucose)

42

Name the 3 limiting factors of photosynthesis

shortage of light
low temperature
shortage of carbon dioxide.

43

Glucose produced in photosynthesis may be converted into what

insoluble starch for storage

44

Glucose produced in photosynthesis may also be used during what

Photosynthesis for respiration

45

Glucose in plants and algae is used for 3 things

To produce fat or oil for storage, Produce cellulose which strengthens the
cell wall and produce proteins

46

What other ingredient is required for plants to produce proteins and where does the plant acquire it from

Nitrate ions that are absorbed from the soil

47

Name 5 physical factors than affect organisms

temperature
availability of nutrients
amount of light
availability of water
availability of oxygen and carbon dioxide

48

What are the two methods to obtain quantitative data on the distribution of organisms

random sampling with quadrats
sampling along a transect