1720361
Frage 1
Frage
I want to light a bunsen on safety flame. What position should the "hole" be?
Antworten
-
The hole should be open to increase air flow
-
The hole should be closed to decrease air flow
-
The hole should be in the half way position
Frage 2
Frage
Which of the following are organs?
Antworten
-
Neurone
-
Stomach
-
Eye
-
Muscle
Frage 3
Frage
Which features will you only find in plant cells?
Antworten
-
Chloroplasts
-
Nucleus
-
Ribosomes
-
Cellulose Cell Wall
Frage 4
Frage
Which features will you find in a bacterial cell?
Antworten
-
Nucleus
-
Circular DNA
-
RIbosomes
-
Mitochondria
Frage 5
Frage
What is the role of the mitochondria
Antworten
-
To produce energy for the cell
-
To release energy from food molecules
-
Performs aerobic respiration to produce ATP for energy
Frage 6
Frage
How many micrometers are in a meter?
Antworten
-
1000
-
100
-
1000,000
-
10,000
Frage 7
Frage
I measured the size of a root hair cell under the microscope. It was 4cm. My magnification was 400x. How big is the actual root hair cell?
Antworten
-
10mm
-
0.1mm
-
1000 um
-
100um
Frage 8
Frage
The red blood cell is an example of a specialised animal cell. How is specialised to carry oxygen to respiring tissues?
Antworten
-
Large surface area to volume ratio because of its biconcave shape
-
No organelles so it can carry lots of haemoglobin
-
Red in colour to increase the rate of diffusion
-
Small and flexible to fit into the smallest capillaries
Frage 9
Frage
The root hair cells of plants are specialised cells. Which of the following describes their adaptation to function?
Antworten
-
Long and thin to help absorb water from between fine soil particles
-
Large surface area to volume ratio to increase rate of diffusion of water into the cell
-
Have stomata which open and close to control movement of gases in and out
Frage 10
Frage
Define diffusion
Antworten
-
Random movement of molecules from a low to a high concentration
-
Random movement of molecules from a high to low concentration
-
Random movement of molecules against a concentration gradient
Frage 11
Frage
How does oxygen get into a cell?
Antworten
-
It diffuses across the cell membrane
-
The cell breathes it in from the atmosphere
-
It moves by osmosis across the cell membrane
Frage 12
Frage
Which of the following allows diffusion to happen more quickly?
Antworten
-
A large diffusion distance
-
A good blood supply
-
A steep concentration gradient
-
A large surface area
Frage 13
Frage
WHen I breathe out which of the following happens?
Antworten
-
The diaphragm contracts and moves down
-
The intercostal muscles contract
-
The rib cage moves down and in
-
The volume of the lung space increases
-
The pressure in the lung space increases compared to outside
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.