Exam 3: Cell Structure and Function

Which statement is true about cells?

The mRNA sequence that is complementary to the sequence UAG on a tRNA is

The nucleus is surrounded by a double membrane called the

Which of these transport mechanisms do not fit into the rest of the group listed?

The plasma membrane

-Identify the organelle shown in the figure,which is described as stacks of flattened membranes containing chambers.

When a protein is synthesized on fixed ribosomes,it is threaded into the lumen of which structure(s)?

Alcohol and fatty acids enter cells via

The job of a sperm cell,or spermatozoan,is to get to the egg as soon as possible and fertilize it.Sperm cells would be expected to have a lot of

In a malignant tumor,which of the following is true?

The cytoplasmic division that forms two daughter cells is called

-Identify the process featured in the image.

What is the benefit of having some of the cellular organelles enclosed by a membrane similar to the plasma membrane?

Place these steps in phagocytosis in the correct order. 1.Residue is ejected from the cell. 2.Lysome fuses with vesicle. 3.Cytoplasmic extensions of the cell surround the object being destroyed. 4.A vesicle is formed in the cytoplasm. 5.Digestive enzymes are activated.

In which type of solution would equilibrium exist?

Which of the following consists of a set of flattened membranous disks?

Modification and packaging of proteins with other molecules is done by the

Which structure leaves the nucleus during transcription of protein synthesis?

Figure 3-5 Protein Synthesis Use Figure 3-5 to answer the following question: Structure #4 is where the protein

Loosely coiled nucleosomes are known as