F211 - Biology

Question 1

Mitosis produces what type of cells

Answer 1

Genetically identical

Question 2

Transports Solutes

Answer 2

Phloem

Question 3

Chromosomes line up along the equator of the cell in…..

Answer 3

Metaphase

Question 4

DNA is replicated in what phase of Mitosis

Answer 4

Interphase

Question 5

What joins 2 chromatids together

Answer 5

Centromere

Question 6

Channel proteins transport what type of particle across a phospholipid belayer

Answer 6

Charged particles

Eg Na+

Question 7

The water potential of pure water is….

Answer 7

0

Question 8

Stem cells are found in the _______ in plants

Answer 8

Cambium

Question 9

SA : V ratios are higher in what type of animals

Answer 9

Smaller

Question 10

Goblet cells secrete what….

Answer 10

Mucus

Question 11

Elastic fibres _______ on breathing in

Answer 11

Stretch

Question 12

Glycolipids + Glycoproteins act as what…..

Answer 12

Receptors

Question 13

Soda lime absorbs what…

Answer 13

Carbon dioxide ( CO2 )

Question 14

What records the electrical activity of the heart…..

Answer 14

Electrocardiograph

Question 15

What blood vessel has the largest lumen….

Answer 15

Veins

Question 16

Elastic fibres ______ to help push air out when exhaling

Answer 16

Recoil

Question 17

What blood vessel has folded endothelium / what does this achieve?

Answer 17

Arteries

Allow arteries to expand under high pressure

Question 18

What type of pressure forces small molecules out of the capillaries and into the tissue fluid

Answer 18

Hydrostatic

Question 19

Carbonic Acid dissociates into what….

Answer 19

Hydrogen ( H+ ) ions and Hydrogencarbonate ( HCO3- ) ions

Question 20

Transports water

Answer 20

Xylem

Question 21

Fetal Haemoglobin has a ______ ______ for oxygen than the mothers

Answer 21

Higher affinity

Question 22

Pits in Xylem allow the transport of _____ ___ ____ into and out of vessels

Answer 22

Water and ions

Question 23

Another word for one (flat) cell thick…..

Answer 23

Squamous Epithelium tissue

Question 24

The four main effectors of Transpiration rate

Answer 24

Light - Temperature - Humidity - Wind

Question 25

Chromosomes get shorter and fatter in what phase of mitosis...

Answer 25

Prophase

Question 26

Bulk transport out of cells

Answer 26

Exocytosis

Question 27

Maximum magnification of light microscope

Answer 27

x1500

Question 28

During __________ the volume of the thorax increases, and and the lung pressure decreases

Answer 28

Inspiration

Question 29

Blood only passes through the heart once in a complete circuit in a ________ circulatory system

Answer 29

Single

Question 30

The pathway where water goes through the cell walls

Answer 30

The Apoplast pathway

Question 31

Processes and packages new lipids and proteins | And makes lysosomes

Answer 31

Golgi Apparatus

Question 32

What is the reason for Xerophytic plants having a layer of hairs

Answer 32

Traps moist air around the stomata Reduces the water potential gradient between he leaf and air So the rate of transpiration is reduced

Question 33

The volume of air inspired in each breath is _______

Answer 33

Tidal volume

Question 34

Increased Carbon Dioxide ( CO2 ) causes more Oxygen to be _______ from the haemoglobin

Answer 34

Released (dissociated)

Question 35

An open circulatory system is where....

Answer 35

The blood isn't enclosed in blood vessels

Question 36

What are the reasons for staining samples?

Answer 36

Create contrast So image is clearer

Question 37

What does the QRS complex in an electrocardiograph represent?

Answer 37

The contraction of the ventricles

Question 38

Key features of sieve tube elements

Answer 38

Holes to allow Solutes through No nucleus Few organelles Thin layer of cytoplasm

Question 39

Do Xerophytic plants have more or less stomata?

Answer 39

Less

Question 40

The maximum volume of air that can be breathed in or out

Answer 40

Vital capacity

Question 41

In Xerophytic plants, how are stomata sheltered from the wind?

Answer 41

Sunk in pits

Question 42

What does a good blood supply to the alveoli achieve?

Answer 42

Maintains a steep diffusion gradient

Question 43

Name a location in a plant where growth occurs

Answer 43

Root TIP

Question 44

Name 2 function of membranes within cells

Answer 44

To separate he contents of organelles from the cytoplasm Controls what substances enter/leave

Question 45

What is transpiration?

Answer 45

The loss of water vapour from a plant

Question 46

What links the companion cells and sieve tube elements in the phloem?

Answer 46

Plasmodesmata

Question 47

The pathway where water goes through the cytoplasm - and through plasmodesmata

Answer 47

The Symplast pathway

Question 48

Why do large, multicellular animals need a transport system?

Answer 48

Small SA : V ratio So rate of diffusion too slow To provide muscles with oxygen

Question 49

Name 4 stages of budding

Answer 49

DNA replicated Mitosis Bulge is created on cell Bulge breaks off and leaves

Question 50

What is a homologous pair of chromosomes

Answer 50

Carry the same gene Same alleles

Question 51

Does transporting vesicles around a cell require energy?

Answer 51

Yes

Question 52

Why cannot all the air in the lungs be exhaled

Answer 52

As the lungs cannot be completely compressed As the trachea is held open by cartilage

Question 53

Name 2 advantages of keeping blood inside blood vessels

Answer 53

Maintain high blood pressure For fast transport around the body

Question 54

The pathway that is blocked by the Casparian Strip

Answer 54

The Apoplast pathway