Which organelle contains enzymes that break down damaged cell parts?

A.) centriole
B.) lysosomes
C.) vacuole
D.) mitochondria


Ans: B.) lysosomes

Biology & Microbiology

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Endodermis cells of the root secrete a waxy

substance on

a. all of their walls. b. the walls that lead into the xylem. c. the walls adjacent to the phloem only. d. walls of the endodermis that touch each other. e. their chloroplasts

Biology & Microbiology

Which does NOT produce variation?

a. crossing over b. random alignment of chromosomes during meiosis c. mitosis d. genetic recombination of alleles e. sexual reproduction

Biology & Microbiology

Nucleotide analogs are a class of drugs that are highly effective against many types of viruses. They work by halting the replication of viral genes. They are equally effective at stopping the spread of prion diseases.

Answer the following statement true (T) or false (F)

Biology & Microbiology

What is produced in the electron transport system associated with photosystem II?

A) NADPH B) Glucose C) ATP D) O2 E) CO2

Biology & Microbiology