Explain why a eukaryotic cell needs membrane-enclosed lysosomes and peroxisomes
What will be an ideal response?
Answer: The structures both contain high concentrations of enzymes that serve as a localized region to perform specific reactions. Enclosed membranes provide a barrier to maintain conditions within the lysosomes and peroxisomes that are unlike those in the cytoplasm, which is important because environmental conditions for these processes to be optimal are often different than the conditions in the cytoplasm.
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Antigen bearing particles in the blood travel to the ____, while those in solid tissues travel to the ____
a. spleen; bone marrow b. thymus; bone marrow c. spleen; lymph nodes d. lymph nodes; spleen e. bone marrow; thymus
Which of the following would be least likely to form a fossil?
a. an animal with an exoskeleton b. an animal with an endoskeleton c. a marine organism d. an organism in the tropical rain forest e. an organism living in a lake
There are many enzymes that are involved in the copying and repair of DNA. which enzymes listed below are associated with the processes of replication and repair?
A) Helicase B) Methylase C) DNA Polymerase D) Ligase E) All of the Above
What is happening to the relative frequency of the lighter fur color allele_________?
Fill in the blank(s) with correct word