Construct a chart to show at least five major differences between the cytoplasmic membrane and cell wall of bacteria and archaea. What are the implications of these differences?
What will be an ideal response?
Answer: Answers could include the following: the abundance or presence of amino acid stereoisomers, polysaccharides, pseudomurein and S-layers, action of lysozyme and penicillin, and type of glycosidic bonds.
You might also like to view...
Of the following combination of statements about protostomes and deuterostomes, which choice is correct?
A. Protostomes are animals in which the mouth develops from the blastopore, and the anus or anal pore develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. B. Protostomes are animals in which the anus develops from the blastopore, and the mouth develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. C. Protostomes are animals in which the mouth develops from the blastopore, and the anus or anal pore develops from the second opening. Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development. D. Protostomes are animals in which the mouth or anus develops from the blastopore, depending on the species. Deuterostomes are animals in which the mouth and anus develops from the blastopore, depending on the species.
Which of the following statements regarding animal digestive systems is false?
A) We expect that an herbivore will have a longer alimentary canal than a carnivore of similar body size. B) Meat is more difficult to digest than vegetable matter because of its protein content. C) Many herbivorous animals have cellulose-digesting microbes in their colon and cecum. D) When cows chew their cud, it helps to soften and break down plant fibers, making these more accessible to digestion by microbes.
This layer of the eye contains melanin and arteries that provide other parts with nutrients and oxygen
A) sclera B) choroid C) iris D) retina
People with high cholesterol levels often take drugs in an attempt to lower their cholesterol levels. One such drug is Lipitor. How does this drug work?
A) It prevents cholesterol from the diet from being absorbed in the small intestine. B) It acts as a competitive inhibitor by binding to the active site of enzymes that normally produce cholesterol. C) It enhances the activity of enzymes that help break down cholesterol in the body. D) It increases the activation energy of enzymes needed to produce cholesterol.