IB Biology Human Physiology Chapter 6

Which row shows a valid comparison of arteries and veins?

• A

• C

• B

• D

Which statement is true for the antibiotic penicillin

• Watson and Crick developed the usage of penicillin

• penicillin blocks pathways unique to prokaryotic cells

• Viruses lack metabolism and penicillin has no effect on them

• Antibiotics cause antibiotic resistance

How can knowledge of the pinneal gland function be applied

• To restore sleep by the use of melatonin

• To trigger ovulation during an IVF treatment

• To reduce sperm production in male contraception

• To regulate blood sugar in type I dibetes

Which muscles contract to cause air to pass into the lungs through the trachea?

• Internal intercostal muscles and diaphragm

• Internal intercostal muscles and abdomen wall muscles

• External intercostal muscles and diaphragm

• External intercostal muscles and abdomen wall muscles

Which words from the table below complete the sentence correctly?

In the pancreas, ____I____ secrete glucagon, which ____II____ blood glucose levels.

• A

• B

• C

• D

Tags

NGSS.HS-LS1-3

The diagram shows part of the membrane of a neurone. What stage of the action potential does it depict?

• Depolarization

• Repolarization

• Resting potential

• Hyperpolarization

Which process is occurring in the small intestine?

• A

• B

• C

• D

Neurotransmitters are released into the synaptic cleft from the presynaptic neuron and travel to a receptor on the post synaptic neuron membrane. Which processes are required for this to happen?

• Release into synaptic cleft: exocytosis. Travel to post synaptic neuron membrane: diffusion

• Release into synaptic cleft: active transport. Travel to post synaptic neuron membrane: diffusion

• Release into synaptic cleft: exocytosis. Travel to post synaptic neuron membrane: active transport

• Release into synaptic cleft: active transport. Travel to post synaptic neuron membrane: active transport

In which blood vessels connected to the heart does the blood have the lowest carbon dioxide concentration?

• Pulmonary vein

• Vena cava

• Pulmonary artery

• Coronary vein

The picture shows a human heart. Which shows the sequence of blood flow through the heart?

• III ----> IV ----> I

• IV ----> III ----> II

• VII ----> VIII ----> I

• VIII ----> VII ----> VI