BIO 4

What is the function of the nucleus? to manufacture ribosomes all of these to contain the hereditary blueprint of the cell to make DNA

- to manufacture ribosomes - to make DNA - to contain the hereditary blueprint of the cell

A researcher made an interesting observation about a protein made by the rough endoplasmic reticulum and eventually used to build a cell's plasma membrane. The protein in the membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the _____. Golgi apparatus smooth endoplasmic reticulum mitochondrion nucleus

Golgi apparatus Correct. Vesicles carrying proteins from the ER fuse with the Golgi apparatus, where the proteins may be altered.

The nuclear envelope is composed of ______. carbohydrates chromatin a double membrane genes

a double membrane

A hormone that will be secreted from the cell is manufactured by ribosomes _____ inside the nucleus attached to the endoplasmic reticulum attached to the plasma membrane attached to the Golgi apparatus

attached to the endoplasmic reticulum

The contractile vacuole _____. eliminates excess water from the cytoplasm of freshwater protists converts light energy to chemical energy contains trapped bacteria to be digested by the lysosomes contains the cell sap

eliminates excess water from the cytoplasm of freshwater protists Correct. It keeps the freshwater protists in osmotic balance.

Mitochondria and chloroplasts are similar in that they both ______; they are different in that chloroplasts, but not mitochondria _________> deal with energy transformations...are found only in eukaryotes have many internal membranes that increase their internal surface area...are found in plants have an inner membrane and outher membrane...carry out photosynthesis have a double membrane...contain DNA

have an inner membrane and outher membrane...carry out photosynthesis

Phospholipids _______. -form a scar around a cell through which anything can pass -consist of a glycerol attached to three fatty acids -have hydrophilic phosphate groups and hydrophobic fatty acid tails -consist of a steroid with a phosphate group

have hydrophilic phosphate groups and hydrophobic fatty acid tails

Information is transferred from the nucleus to ribosomes via ______. DNA rough endoplasmic reticulum mRNA Chromosomes

mRNA

The concept of a membrane as a fluid mosaic reflects the ability of ______. carbohydrates to drift into and out of the membrane structure most proteins but not phospholipids to drift about in the plane of the membrane phospholipids but not proteins to drift about in the plane of the membrane phospholipids and most proteins to drift about in the plane of the membrane

phospholipids and most proteins to drift about in the plane of the membrane

Chloroplasts are found in _____. animal cells only both plant cells and animal cells neither plant cells nor animal cells plant cells and some protists

plant cells and some protists

Many antibiotic drugs are effective against bacteria without hurting humans because the antibiotics rely upon differences in the structure of human and bacterial ______. ribosomes chromosomes DNA lysosomes

ribosomes

Which of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes in the small intestine? lysosomes smooth ER rough ER mitochondira

rough ER

You would expect a cell with an extensive Golgi apparatus to ______ make a lot of ATP make a lot of proteins secrete a lot of material store large quantities of food

secrete a lot of material

The term "resolving power" refers to which of the following? the source of illumination the apparent increase in the size of the object the clarity of the image the depth of focus

the clarity of the image

Membrane proteins are synthesized by ribosomes that are attached to _____. the nucleolus the endoplasmic reticulum the Golgi apparatus lysosomes

the endoplasmic reticulum

Most of the DNA in an eukaryotic cell is in _________. the endomembrane system the nucleolus none of these the nucleus

the nucleus

To enter or to leave a cell, substances pass through ________. the ribosome the nucleus the plasma membrane a microtubule

the plasma membrane