Define
What is tropisms?
the movement of part of a plant towards a stimulus
False, also in the roots
What is the difference between respiration and respiratory surface?
respiration = breakdown of glucose to release energy
respiratory surface = site for gas exchange
Which part of the nephron carries of ultrafiltration
a) proximal convoluted tubule
b) Bowman's capsul
c) glomerulus
c) glomerulus
Predict whether a chocolate stain will be removed with a biological washing powder that contains pepsin.
It won't, because chocolate contains lipids and pepsin breaks down proteins.
What is the word equation for photosynthesis?
water + carbon dioxide ----(sunlight, chlorophyll)-------> glucose + oxygen
Phloem transports sucrose and amino acids
True, even though glucose is produced in photosynthesis, it is transported as sucrose then converted back to glucose.
Explain the difference between egestion and excretion.
egestion = removal of undigested material
excretion = removal of metabolic waste
What test would you choose for a positive identification of a biomolecule in potatoes?
a) Benedict's
b) Iodine
c) Biuret
b) Iodine
Potatoes are rich in starch, iodine tests for presence of starch
What connects the gut to the liver?
What is an enzyme?
A biological catalyst that speeds up chemical reactions without being changed
Bile is an enzyme true or false.
False, bile carries out emulsification which breaks down lipids into smaller droplets.
Explain two adaptations of villi to enhance their function of absorption.
- many villi to increase sa
- microvilli to increase sa
- 1 cell thick to reduce distance for absorption
- rich blood supply to maintain steep concentration gradient
What blood type would be safe for transfusion for a patient with B- blood.
a) B+
b) AB-
c) O-
c) O-
Which has a moon-shaped nucleus?
a) phagocytes
b) platelets
c) lymphocytes
a) phagocytes
duodenum
vena cava->left atrium-> left ventricle-> pulmonary vein-> lungs-> pulmonary artery-> right atrium->right ventricle-> aorta
vena cava->right atrium-> right ventricle-> pulmonary artery-> lungs-> pulmonary vein-> right atrium->right ventricle-> aorta
What three features do red blood cells have that adapt them for their function?
- spongy
- biconcave
- no nucleus
The loss of oxygen bound to haemoglobin, with a high percentage of carbon dioxide dissolved in the blood plasma is called
a) oxyhaemoglobin
b) carboxyhaemoglobin
c) deoxyhaemoglobin
c) deoxyhaemoglobin
What is the name of the valve located between the right atrium and the right ventricle?
tricuspid valve
What is a limiting factor?
A factor that controls a process. When this factor is in low concentrations the rate of reaction will not be able to increase
Humidity increases the rate of transpiration.
a) true
b) false
b) false
there is not much difference in water inside and outside plant, so less water lost by transpiration
Explain inhalation.
diaphragm flattens
chest goes up and out
intercostal muscles contract
volume increases
pressure decreases
air enters
In which plant layer is the vascular bundle within veins located?
a) spongy mesophyll
b) palisade mesophyll
c) upper epidermis
a) spongy mesophyll
How is homeostasis achieved in the kidneys?
low water in body, pituitary gland releases ADH, reabsorbs water from collecting duct in nephron, water level returns to normal