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Platelets and Blood Clotting

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Questions and Answers

Which of the following is a function of platelets?

Producing red blood cells

Initiating blood clot formation (correct)

Filtering waste products from the blood

Transporting oxygen in the blood

Where are platelets derived from?

Megakaryocytes (correct)

Lung cells

Red blood cells

White blood cells

In which group of animals are platelets found?

All vertebrates

Birds and amphibians only

Invertebrates

Mammals only (correct)

What is the first step of platelet function in hemostasis?

Adhesion Signup and view all the answers

What happens to platelets during hemostasis if the interruption is physically too large?

They connect to each other Signup and view all the answers

Which of the following best describes a regulatory enzyme?

An enzyme that regulates the activity of other enzymes in a biochemical pathway Signup and view all the answers

What is the main role of regulatory enzymes in a biochemical pathway?

To control the amount of product generated by the pathway Signup and view all the answers

Which enzyme is commonly the first enzyme in a multienzyme system?

Regulatory enzyme Signup and view all the answers

What is the relationship between substrate concentration and the activity of regulatory enzymes?

Changes in substrate concentration can increase or decrease the activity of regulatory enzymes Signup and view all the answers

What is the function of regulatory enzymes in metabolism pathways?

To regulate the activity of the pathway Signup and view all the answers