WorksheetsBiology Paper 1 2022
Total questions: 83
Worksheet time: 1hrs 2mins
A _________ is DNA tightly coiled around proteins.
gene
chromosome
trait
mutation
The 2 exact copies of DNA in a chromosome are called ________.
chromatids
genes
mutations
pathogens
A _______ is a segment of DNA that controls our traits.
gene
gamete
chromosome
chromatid
What occurs during stage 2 of the cell cycle?
the number of sub-cellular structures increases
the nucleus divides
the DNA replicates
the cell divides
A cell has four chromosomes.
During the cell cycle, how many chromosomes will the cell
have at the end of stage 1?
one
four
two
eight
Forms body cells
Mitosis
Meiosis
Forms gametes
Mitosis
Meiosis
Forms four cells
Mitosis
Meiosis
Forms two cells
Mitosis
Meiosis
Forms genetically identical cells
Mitosis
Meiosis
Forms genetically non-identical cells
Mitosis
Meiosis
Has two cell divisions
Mitosis
Meiosis
Produces diploid cells
Mitosis
Meiosis
Has one set of chromosomes
Haploid
Diploid
Body cells
None of the above
Starts with one diploid cell
Mitosis
Meiosis
Both
Neither
Which is not a source of embryonic stem cells?
umbilical cord blood
bone marrow
aborted embryos
amniotic fluid
What is meant when you say that a cell has differentiated?
cells have become enlarged
cells have specialised to complete a particular function
cells are unspecialised and can change to have any function
cells have undergone cell division by mitosis
What is the biggest disadvantage of using adult stem cells?
it involves therapeutic cloning, which is very difficult
they grow and divide very rapidly with the risk of causing cancer
it may trigger an immune response
some people may disagree for ethical reasons
What would be an advantage of using genetically identical
clones of plants created from stem cells in research?
the experiment would not need repeating
it removes unwanted variables
it removes human error from the experiment
the results would be exactly the same each time
Which is a disadvantage of therapeutic cloning?
there are concerns about the risk of cancer from rapid cell division
there is the risk of transfer of genetic diseases
the use of immunosuppressant drugs is required
cells would have different genes to the recipient
What are the levels of living organisms from smallest to largest?
Tissue - Organ Systems - Cells - Organs - Organism
Cells - Tissue - Organs - Organ Systems - Organisms
Organs - Organ Systems - Organisms - Cells - Tissue
Cells - Tissue - Organisms - Organ Systems - Organs
Which part of the digestive system had a low pH to help the enzymes with low optimum pH level
Mouth
Large Intesine
Small Intestine
Stomach
Which one of these statements about enzymes isn't true.
The active site on the enzyme has a specfic shape to only fit one substrate.
When the temperature around the enzyme is above it's optimum temperature, the enzyme will start to denature.
Enzymes can speed up reactions. Examples can be breaking down molecules, or putting molecules together.
When a enzyme is in a pH that is not in it's optimum pH range, it will die.
Denaturing is when the enzyme, and it's active site, change shape.
Protease breaks down (a) molecules.
Lipase breaks down (a) molecules.
What does Bile do in digestion?
Protects the cells in the stomach lining from the acid inside it.
Allows the lock and key model of the enzymes to work more efficently.
Creates better conditions for good bacteria to grow in digestive system.
Emulsifise (break down) fats.
Bile is made in the ______ and released from the_____.
Liver, Gall Bladder
Kidneys, Small Intestine
Pancrease, Stomach
Saliva Glands, Mouth
What are the two different names of heart chambers?
Anodes
Atriums
Lumens
Ventricles
The Valves in the heart and veins prevent ________.
Forward Flow
Cardiac Flow
Lateral Flow
Back Flow
What does the heart do to the blood.
Oxygenates the blood
Put pressure on the blood to push it around the body.
Increases the whiteblood count in the blood.
Decreases blood pressure to prevent cardiac disease.
Why are human cardiac systems referred to as 'Double Circulatory Systems'?
The heartrate can be doubled to pump more blood around the body when exercising.
There are two 'dubs' (dub-dub) in one heart beat.
The blood moves through the heart twice to be pressurized twice.
Becasue there are two different kinds of blood vessels that are attached to the heart (arteries and veins).
Why do arteries have very thick and elastic walls.
The protect the blood inside.
To prevent coronary heart disease,
So substance like oxygen can't move through the walls.
To withstand the large amount of pressure in the blood they carry.
Capillaries are really thin so substances like oxygen, carbon dioxide and glucose can move in and out of the vessel. How thick are they?
Roughly the same thickness of a hair
One cell thick
1 Micrometres
5 Micrometres
Which of these are not found in blood
Red Blood Cell
White Blood Cell
Bile
Platetes
Cornary heart disease (CHD) is when arteries on the heart become blocked with fatty deposits. What isn't a signifcant factor that increases the chance CHD.
Blood Chloesterol Levels
Genetics
Diet and Exercise
Testerone Levels
What treatment for Coronary Heart Disease does this picture show?
Stent
Statin
Heart Transplant
By-Pass
What part of the heart has been replaced in the picture?
Atrium
Ventricle
Valve
Septum
Cancer is a disease of ______
Uncontrolled cell growth
The slowing of the nervous system
Genetic destruction
Reducing the immune system
The most dangerous type of cancer is (a) , because it can spread around the body.
enzymes
Which parts of the diagram is the small and large intestine?
A~ small intestine
E~ large intestine
D~ small intestine
E~ large intestine
C~ large intestine
B~ small intestine
A~ large intestine
C~ small intestine
E~ small intestine
D~ large intestine
Identify structure A in the diagram
muscle
nerve
capilary
The villi shown in this diagram absorb the products of digestion by?
dialysis
diffusion
osmosis
breathing
What organ is shown by the letter Z?
stomach
pancreas
small intestine
liver
What organ is shown by the letter X?
stomach
pancreas
small intestine
liver
Which letter represents the organ where enzymes such as lipase are made?
X
Y
Z
Which food contains the most protein?
A
B
C
D
E
Which food when digested would result in the most glucose being absorbed in the small intestine?
A
B
C
D
E
Which food would result in the most LIPASE being secreted?
A
B
C
D
E
The pulmonary artery is the artery that carries the blood to your heart from your lungs.
True
False
Which blood vessel carries blood away from the heart?
Veins
Arteries
Capillaries
Which blood vessel carries blood toward the heart?
Arteries
Veins
Capillaries
Which chamber in the heart collects oxygen poor blood?
Right Atrium
Right Ventricle
Left Atrium
Left Ventricle
Which chamber in the heart collects oxygen rich blood?
Right Atrium
Left Ventricle
Left Atrium
Right Ventricle
Which chamber in the heart pumps oxygen poor blood to the pulmonary artery?
Right Ventricle
Left Ventricle
Aorta
Right Atrium
Which chamber of the heart pumps oxygen rich blood to the aorta?
Pulmonary Artery
Left Atrium
Left Ventricle
Right Ventricle
Which type of tumor is being described:
Slow growing Not dangerous Does not spread
Malignant
Benign
Which type of tumor is being described below:
Spreads Dangerous Grows quickly
Benign
Malignant
