Select the three layers of the human eye.

a. sclera
b. choroid
c. retina
d. all of the above


Ans: d. all of the above

Biology & Microbiology

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Crossing over is more likely to occur between genes that are ______ on a chromosome

A. Close together B. Far apart

Biology & Microbiology

Arthropod exoskeletons are composed primarily of

A. chitin. B. calcium carbonate. C. collagen. D. cartilage. E. sclerotin.

Biology & Microbiology

For human races to be considered valid biological groupings, the genetic diversity within the group would have to be _________ the genetic diversity between groups.  

A.  lower than B.  equal to C.  higher than Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about human races? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Cellular respiration occurs in two main parts, glycolysis and aerobic respiration. What are the reactants needed for aerobic respiration in eukaryotic cells?

A) lactic acid and oxygen B) glucose and water C) glucose and oxygen D) carbon dioxide and water

Biology & Microbiology