Question

part a
which organelle is responsible for processing and packaging proteins destined for export from the cell?
golgi apparatus
peroxisomes
lysosomes
endoplasmic reticulum

60.
part a
myocardium (cardiac muscle tissue) must rhythmically contract for a lifetime. this requires a considerable amount of energy production by the cells. you would expect to see a relatively high amount of which organelle in these cells?
cytoskeleton
mitochondria
lysosomes
smooth endoplasmic reticulum

61.
part a
beta cells in the pancreas produce and secrete the protein hormone insulin. you would expect to see a relatively large amount of which organelles in these cells?
cytoskeleton, and peroxisomes
golgi apparatus, rough endoplasmic reticulum
mitochondria, and cilia
smooth endoplasmic reticulum, and lysosomes

62.
part a
apoptosis is programmed cell death; cancer cells do not undergo this process.
true
false

63.
part a
telomeres are the regions of chromosomes that code for the protein ubiquitin.
true
false

Explanation:

• For the first question, the Golgi apparatus modifies, sorts, and packages proteins for secretion.
• For the second question, mitochondria are the power - houses of the cell and produce energy (ATP), which is needed for the rhythmic contraction of cardiac muscle.
• For the third question, beta cells in the pancreas need rough endoplasmic reticulum for protein synthesis (insulin is a protein) and Golgi apparatus for processing and packaging the protein for secretion.
• For the fourth question, apoptosis is programmed cell death and cancer cells often evade this process.
• For the fifth question, telomeres are repetitive DNA sequences at the ends of chromosomes and do not code for ubiquitin.

Answer:

1. Golgi apparatus
2. mitochondria
3. Golgi apparatus, rough endoplasmic reticulum
4. True
5. False