MCQ

CH9 - GAS EXCHANGE AND SMOKING

In the lungs, movement of dissolved carbon dioxide out of the capillaries occurs in one of two ways:• by diffusion through the endothelial cells of ...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

How are alveoli adapted to their function?

2024 Summer

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

What maintains the steep concentration gradients needed for successful gas exchange in the lungs?1. Air flow in the alveoli is in the opposite directi...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

The diagram shows oxygen diffusing from the space inside an alveolus into the blood through the gaseous exchange surface.What would increase the rate ...

2024 Summer

6

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Where is cartilage tissue always found in the human gas exchange system?

2024 Summer

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Which tissues are present in a bronchus? [Table_1]

2024 Summer

5

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Scientists compared the density of goblet cells in the lungs and the density of mucus in the lungs of three groups of people: • people who do not s...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Steep concentration gradients must be maintained for efficient gaseous exchange to occur in the human lungs. Which row correctly describes how steep ...

2024 Summer

7

MCQ

CH9 - GAS EXCHANGE AND SMOKING

What is the function of cilia in the gas exchange system?

2024 Winter

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Which tissues are present in the walls of a trachea and an alveolus? [Table_1: tissue table with epithelium with goblet cells and smooth muscle prese...

2024 Winter

4

MCQ

CH1 - CELL STRUCTURE

A student used a light microscope to observe a blood smear on a microscope slide.An eyepiece graticule was used to measure the diameter of a white blo...

2024 Spring

4

MCQ

CH1 - CELL STRUCTURE

Which statement explains why it is necessary to use an electron microscope to see the cristae of a mitochondrion?

2024 Spring

4

MCQ

CH1 - CELL STRUCTURE

Some stains can be used to identify cell structures in living cells.A dilute solution of one stain causes the whole cell to appear blue.The blue colou...

2024 Spring

4

MCQ

CH1 - CELL STRUCTURE

When mucus is secreted from a goblet cell, these events take place.1 addition of carbohydrate to protein2 fusion of a vesicle with the cell surface me...

2024 Spring

3

MCQ

CH1 - CELL STRUCTURE

The diagram shows four biological features. Which biological features are present in typical prokaryotes?

2024 Spring

3

MCQ

CH1 - CELL STRUCTURE

Which row shows features that occur in dicotyledonous plant cells and also in typical bacterial cells?key✓ = found in dicotyledonous plant cells and...

2024 Spring

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which flow chart outlining the test for non-reducing sugars is correct?

2024 Spring

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which diagrams show the release of a water molecule during the formation of a glycosidic bond?[Image_1: Shows three chemical diagrams each illustratin...

2024 Spring

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which molecules have a structural formula that contains C=O bonds? 1. amino acids 2. fatty acids 3. glycerol 4. protein

2024 Spring

5

MCQ

CH2 - BIOLOGICAL MOLECULES

Which statement about triglycerides is correct?

2024 Spring

3