Exam 3: Compartmentation: Cells and Tissues

If the adrenal cortex produces lipid-based hormones such as aldosterone, which organelle would be higher in cells of the adrenal cortex than in the adrenal medulla?

Which proteins assist in the movement of vesicles along microtubules?

Nutrients undergo the last stages of digestion by enzymes located on the cells of the small intestine; then the nutrients are absorbed by these same cells by way of various membrane transport processes.Adipose cells absorb and store excess food energy in the form of fat.You and the other students in the physiology lab you are taking are doing an analysis of cell membrane composition, on unknown animal tissue samples labeled A and B.All lab groups determined that sample A contained, on average, 81% protein, 18% lipid, and 1% carbohydrate.Sample B contained 85% lipid, 10% protein, and 5% carbohydrate.Sketch a graph of the class data.You now have to make a logical conclusion as to which sample is more likely to be intestine and which is adipose tissue.What do you conclude, and why?

Cells are transformed into specialized units during

The fluid substance of blood is called

Plasma is not

If a person who has not exercised regularly begins a consistent exercise routine, she will notice that her metabolism will seem to increase as her endurance improves.Why is this?

Cilia are considered which of the following?

A ribosome is considered which of the following?

Arrange the following events in protein secretion in the proper sequence. 1)The polypeptide chain enters the lumen of the endoplasmic reticulum. 2)A secretory vesicle is formed. 3)A transport vesicle is formed. 4)The polypeptide chain enters the lumen of the Golgi complex.

Which of the following is NOT a function of membrane proteins?

The function of microvilli, often seen on the apical membrane of transporting epithelia, is to

During a lab practical, Laurant examines a tissue that is composed of densely packed protein fibers that are running parallel and form a cord.There are few nuclei and no striations, and there is no evidence of other cellular structures.Laurant identifies the tissue as skeletal muscle.Why is Laurant's choice wrong, and which tissue is he probably observing?

A flagellum moves a cell through a fluid medium.What moves the fluid medium across the surface of cells that are not free to move?

Sketch a cell membrane.Label at least three components and briefly explain what each one does.

This tissue is made up of adipocytes.

Plasma is to blood as ________ is to cytoplasm.

This type of epithelia is composed of cells with membrane extensions that beat in a coordinated fashion to move fluid and particles across the tissue.

On the row of cells indicated below, match A-E to the terms in the following question(s). Figure 3.1 -Referring to Figure 3.1, which letter represents the basolateral membrane?

Increasing muscle mass and decreasing fat content in your body can increase ones use of energy.Why is this?