Lipids absorbed in the small intestine will first enter which of the following structures?

Veins

Arteries

Lacteal vessels

Interstitial spaces

Answer and Explanation

The Correct Answer is C

Lacteal vessels. Lipids absorbed in the small intestine will first enter lacteal vessels, which are small lymphatic vessels located in the villi of the small intestine. These vessels transport the absorbed lipids to the lymphatic system, where they eventually enter the bloodstream.

a. Veins and b. Arteries are blood vessels that transport blood throughout the body. Lipids absorbed in the small intestine do not directly enter these vessels.

d. Interstitial spaces are spaces between cells and tissues that contain interstitial ﬂuid. Lipids absorbed in the small intestine do not directly enter these spaces.

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Correct Answer is A

Explanation

Perforins are immune system molecules that create holes in the cell membranes of their target cells in order to destroy the cell. Perforins are proteins that are released by cytotoxic T cells and natural killer cells.

They form pores in the target cell membrane, allowing water and ions to enter the cell and causing it to swell and burst.

The other options are not correct because they do not accurately describe the immune system molecules that create holes in the cell membranes of their target cells. Interferons, cytokines, and lymphotoxins do not create holes in cell membranes.

A. The ultraviolet rays at such a high altitude caused all his molecules to be preserved. B. The food that the person ate contained toxins that killed the bacteria that would have otherwise C. destroyed the body. D. The body was frozen in the cold temperature of the Alps shortly after he died and remained frozen until

Correct Answer is D

Explanation

It was frozen in the cold temperature of the Alps shortly after death and remained frozen until it was found. Freezing can preserve a body by slowing down or stopping the decomposition process.

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\| 1	\| 5.0 g\| 2.0 sec	\|
\| 2	\| 5.0 g\| 1.0 sec	\|
\| 3	\| 30.0 g\| 0.5 sec	\|
\| 4	\| 35.0 g\| 1.5 sec	\|

Lipids absorbed in the small intestine will first enter which of the following structures?

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Naxlex Comprehensive Predictor Exams

Which of the following immune system molecules creates holes in the cell membranes of their target cells in order to destroy the cell?

Correct Answer is A

Explanation

Hikers who found a human body at high altitude in the Italian Alps thought the man had died recently, but tests indicated he was shot with an arrow more than 5,300 years ago. Which of the following would be the best reason for prolonged preservation of the body?

Correct Answer is D

Explanation

Use the table below to answer the question. | Object | Mass | Time of Fall | | | | | | 1 | 5.0 g| 2.0 sec | | 2 | 5.0 g| 1.0 sec | | 3 | 30.0 g| 0.5 sec | | 4 | 35.0 g| 1.5 sec | Which of the following conclusions is supported by the data?

Which of the following classes of biological molecules includes enzymes?

Which of the following structures is an exocrine gland?

Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?

In which of the following regions of the body are the tibia and fibula?

An individual suﬀers severe blunt trauma to the thoracic cavity. Which of the following organs are at greatest risk from this injury?

Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the eﬀects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?

Which of the following organs filters excess solutes from the blood?