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

1. Animal cells are unique among all other eukaryotic groups in that they universally lack a cell wall.

2. Unlike antibiotics which target the 70S bacterial ribosomes, there are no known chemical substances which can bind to 80S eukaryotic ribosomes.

3. Cells which are active and have high energy demand will have more mitochondria than cell that are less active and have lower energy demand.


1. TRUE
2. FALSE
3. TRUE

Biology & Microbiology

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It is clear that certain traits in early primate evolution played a key role in leading to the survival and further development of members of the order. Explain how traits such as manual dexterity, upright posture, acute vision, larger brain, extended infant care, and modified teeth laid the groundwork for the evolution of humans

What will be an ideal response?

Biology & Microbiology

Aquatic organisms are unable to tolerate low pH conditions mainly because acidic waters contain high concentrations of toxic

A) sodium. B) chlorine. C) aluminum. D) carbon dioxide.

Biology & Microbiology

The complement system is _____

A) a set of proteins involved in innate but not acquired immunity B) a group of proteins that includes interferons and interleukins C) a group of antimicrobial proteins that act together in a cascade fashion D) a set of proteins that act individually to attack and lyse microbes

Biology & Microbiology

A doctor is treating a patient who has some form of anemia. First, the doctor tries to give the patient extra vitamins that contain iron, to no effect. There is no evidence of lead poisoning. The doctor tries an injection of vitamin B12, and the anemia

is under control. What type of anemia did the patient have? A) hemorrhagic anemia B) iron-deficiency anemia C) pernicious anemia D) sickle-cell anemia

Biology & Microbiology