Exploring Paleontology

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Which category of animal tissue lines the small intestine?

Epithelial (correct)

Nervous

Connective

Muscle

What is the function of connective tissue?

To contract and produce movement

To provide support and structure (correct)

To line internal organs

To transmit electrical signals

Which organ system is composed of groups of organs that work together?

Organ systems (correct)

Organisms

Tissues

Cells

Which of the following is NOT a process involved in food processing?

Ingestion Signup and view all the answers

What is the purpose of mechanical digestion?

To increase the surface area of food Signup and view all the answers

What is the role of pepsin in the stomach?

To break down proteins Signup and view all the answers

Which of the following is a key function of most excretory systems?

Filtration Signup and view all the answers

What is the role of angiotensin II in the kidney?

It raises blood pressure and decreases blood flow to capillaries in the kidney Signup and view all the answers

Which of the following is true about essential fatty acids?

Essential fatty acids must be obtained from food in prefabricated form Signup and view all the answers

Which organ secretes bicarbonate to neutralize the acidity of chyme in the small intestine?

Pancreas Signup and view all the answers

Where is bile produced and stored?

Liver Signup and view all the answers

What is the function of the colon in the digestive system?

To recover water Signup and view all the answers

Which hormone is secreted by the stomach wall and triggers a feeling of hunger before meals?

Ghrelin Signup and view all the answers

What is the main substrate for cellular respiration?

Lipid Signup and view all the answers

Who is the founder of taxonomy, the branch of biology that organizes species into a nested classification system of increasingly general categories?

Carolus Linnaeus Signup and view all the answers

Which type of glands have ducts that carry enzymes or secreted substances into body cavities or onto body surfaces?

Exocrine glands Signup and view all the answers

Which of the following is true about anterior pituitary hormones?

They form part of a hormone cascade Signup and view all the answers

What is the main difference between an animal that is a regulator and an animal that is a conformer?

Regulators use internal mechanisms to control internal change despite external fluctuation Signup and view all the answers

Which scientist largely developed the study of fossils?

Georges Cuvier Signup and view all the answers

What is natural selection?

A process in which individuals with favorable inherited traits are more likely to survive and reproduce Signup and view all the answers

What is homology?

Similarity resulting from common ancestry Signup and view all the answers

Which type of speciation occurs when populations are geographically isolated from each other?

Allopatric speciation Signup and view all the answers

What can develop in lab populations that are experimentally isolated and subjected to different environmental conditions?

Reproductive barriers Signup and view all the answers

Which type of speciation occurs when populations are not geographically isolated?

Sympatric speciation Signup and view all the answers

What is the presence of extra sets of chromosomes due to accidents during cell division called?

Polyploidy Signup and view all the answers

Which type of speciation is much more common in plants?

Polyploidy speciation Signup and view all the answers

What is an individual with more than two chromosome sets derived from one species called?

Autopolyploid Signup and view all the answers