There are many types of cancer. What do all types of cancer have in common?
shortened telomeres
uncontrolled cell division
apoptosis (programmed cell death)
uncontrolled tumor supressor genes
uncontrolled cell deivsion
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what antiviral agent is used to treat respiratory syncytial virus?
What will be an ideal response?
Which of the following situations would be best for growing most plants?
a. a soil with very small air spaces b. a soil with relatively large air spaces c. a soil with air spaces filled almost entirely with water d. a soil with various sizes of air spaces
All animals need oxygen gas (O2 ) for their primary cellular-level functioning. Inside the cell, O2 is split apart into oxygen atoms. Eventually, electrons that are flowing through the cell will be "received" by this oxygen
But first, the electrons combine with protons present in the cell to form a basic element that has a single proton and a single electron. Then this element combines with the oxygen to form a certain chemical compound. In this scenario, what chemical compound is produced when this element combines with oxygen? A) Bicarbonate (HCO3 ) B) Water (H2O) C) Carbon dioxide (CO2 ) D) Ozone (O3)
Which of the following statements about the cytoskeleton is false?
A) The cytoskeleton helps to support cells. B) Once laid down, the elements of the cytoskeleton are fixed and remain permanently in place. C) The cytoskeleton is composed of three types of fibers: microfilaments, microtubules, and intermediate filaments. D) The cytoskeleton plays an important role in amoeboid motion.