Which substance is not an element?

A. Chlorine
B. Oxygen
C. Carbon
D. Water
E. Hydrogen


Answer: D

Biology & Microbiology

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A seed is often described as, "a baby plant in a box with its lunch." Explain this statement using the appropriate terms

for baby plant, box, and lunch.

What will be an ideal response?

Biology & Microbiology

Unlike single-celled organisms that have direct contact with their external environment, most cells in a multicellular

organisms do not have direct contract with their external environment. How do these cells acquire nutrients and eliminate wastes?

a. by active and passive transport between the basal lamina and the interstitial fluid b. by active and passive transport between the basal lamina and the plasma c. by active and passive transport between the intracellular fluid and the interstitial fluid d. by active and passive transport between the intracellular fluid and the plasma e. through gap junctions between the intracellular fluid and the plasma

Biology & Microbiology

Obese people have a greater risk of four of the following. Which one is the exception?

A. Type 1 diabetes B. Colon cancer C. High blood pressure D. Breast cancer E. Heart disease

Biology & Microbiology

The primary structure of a protein is determined by ________

A) the sequence of amino acids B) a series of helical domains C) hydrogen bonds formed between the components of the peptide linkage D) pleated sheets E) covalent bonds formed between fibroin residues

Biology & Microbiology