Test
SB8a-c
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Preguntas del test (18)
1The collective term for all of the chemical reactions which occur in the body is [blank_start]metabolism[blank_end]. These processes produce wastes which must be excreted.
- Ametabolism
2Select two human excretory organs.
- AEyes
- BKidneys
- CLarge Intestine
- DLungs
- EToes
3Surfaces within the body which facilitate the diffusion of substances have multiple adaptations. For example, they are [blank_start]thin[blank_end], reducing the distance over which particles must diffuse. This increases rate of diffusion. They also have a large [blank_start]surface area[blank_end], which increases the room over which particles can diffuse.
- Asurface area
- Bthin
4The vessels which transport blood to and from cells are called...
- AArteries
- BCapillaries
- CLungs
- DVeins
5The smaller the SA:V ratio, the more efficient diffusion is.
- AVerdadero
- BFalso
6Large cells have the most favourable SA:V ratios.
- AVerdadero
- BFalso
7Lungs have a large surface area as they are packed with millions of [blank_start]alveoli[blank_end], which aid an increase in the rate of gas exchange.
- Aalveoli
8The particles in a solution move [blank_start]randomly[blank_end] in all directions. This causes a net movement of the solute particles, from [blank_start]higher[blank_end] concentration to [blank_start]lower[blank_end] concentration. No net movement occurs when the concentrations are [blank_start]equal[blank_end].
The [blank_start]difference[blank_end] between two concentrations forms a concentration [blank_start]gradient[blank_end]. The bigger the difference, the [blank_start]steeper[blank_end] the concentration gradient and the [blank_start]faster[blank_end] the [blank_start]rate of diffusion[blank_end].
[Text from Pearson Edexcel GCSE Student Book Biology pg 164]- Arandomly
- Bhigher
- Clower
- Dequal
- Edifference
- Fgradient
- Gsteeper
- Hfaster
- Irate of diffusion
9There is a [blank_start]linear[blank_end] relationship between different between two concentrations and the rate of diffusion.
- Alinear
- Buneven
- Cquadrilateral
- Dquadratic
- Echanging
10In the lungs, it is important that the concentration gradient for oxygen is very gradual.
- AVerdadero
- BFalso
11Rate of diffusion is [blank_start]directly proportional[blank_end] to surface area.
- Adirectly proportional
- Binversely proportional
12Rate of diffusion is [blank_start]directly proportional[blank_end] to the thickness of the membrane.
- Adirectly proportional
- Binversely proportional
13In the circulatory system, blood flows [blank_start]away[blank_end] from the [blank_start]heart[blank_end] into the [blank_start]arteries[blank_end]. These divide into narrow [blank_start]capillaries[blank_end], which form fine networks running through [blank_start]tissues[blank_end]. Blood returns to the heart in [blank_start]veins[blank_end].
[Text from Pearson Edexcel GCSE Student Book Biology pg 166]- Aveins
- Baway
- Cheart
- Darteries
- Ecapillaries
- Ftissues
14Artery walls are thick so they can withstand blood at high pressure.
- AVerdadero
- BFalso
15Arteries contain valves to prevent blood backflow.
- AVerdadero
- BFalso
16Blood cells are also known as eukaryotes.
- AVerdadero
- BFalso
17There are different types of white blood cells, including phagocytes and lymphocytes. [blank_start]Lymphocytes[blank_end] produce antibodies which bind to foreign cells. [blank_start]Phagocytes[blank_end] engulf foreign cells and digest them.
- ALymphocytes
- BPhagocytes
- CLymphocytes
- DPhagocytes
18Each platelet contains the organism's genome.
- AVerdadero
- BFalso
Información
- Descripción
- GCSE sciences Test sobre SB8a-c, creado por Oliver Zimmermann el 16/05/2018.
- Autor
- Oliver Zimmermann
- Idioma
- English
- Visitas
- 10
- Etiquetas
- Valoración
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