Question

1. can vesicular transport act against a concentration gradient? yes. it takes energy to do it, though.

1. ribosomes are (one or more)

the protein pumps that maintain transmembrane potential
cells that engulf foreign cells or debris
composed of rna and protein
organelles where proteins are synthesized (assembled)
chemical messengers that attract immune cells to the site of injury

1. what disease state results from uncontrolled growth or a failure of apoptosis? cancer

1. what results when normal cell-cell connections are lost? loss of function of the tissue; or metastasis of a cancerous tumor.

Explanation:

Analyze vesicular transport and concentration gradients

Vesicular transport (active transport) moves large molecules or bulk materials across membranes using vesicles. Because it requires energy (ATP), it can move substances against their concentration gradient.

Determine ribosome characteristics

Ribosomes are non-membrane-bound complexes. They are composed of ribosomal RNA (rRNA) and proteins, and they serve as the primary sites where proteins are synthesized (assembled) during translation.

Identify disease from uncontrolled growth or apoptosis failure

Uncontrolled cell division and the evasion of programmed cell death (apoptosis) are the primary hallmarks of cancer.

Determine consequences of losing cell-cell connections

When normal cell-cell junctions and connections are disrupted, tissues lose their structural integrity and physiological function, and cancerous cells can detach to migrate (metastasis).

Answer:

Question 26

Can vesicular transport act against a concentration gradient? YES. It takes energy to do it, though.

Question 27

Ribosomes are (one or more)

• composed of RNA and protein
• organelles where proteins are synthesized (assembled)

Question 28

What disease state results from uncontrolled growth or a failure of apoptosis? Cancer

Question 29

What results when normal cell-cell connections are lost? Loss of function of the tissue; or metastasis of a cancerous tumor.