Some organisms living in a vacant lot include grass, dandelions, mice, grasshoppers, and slugs. Collectively these organisms represent

(A) an ecosystem.

(B) a community.

(C) a population.

(D) a mutualism.

(E) a biome

You conduct an experiment by incorporating purple fluorescent dNTPs early in S phase, followed by gold fluorescent dNTPs late in S phase.

Produces the hormone insulin and glucagon, which controls the level of glucose in the blood

As a scientist working for an anti-bioterrorism task force, you are asked to evaluate some biological samples for the presence of Yersinia pestis, the organism that causes the plague. After confirming that the samples do contain Y.

An experiment tested the health effects of a nutritional supplement by the following procedures

A SNP is in a non-coding region of DNA that has no effect on phenotype. One of the alleles of the SNP appears to be decreasing in frequency in the population. Which of the following is the most likely explanation for this decrease in frequency? A.

What is a synonym for contention? A. Assertion B. Question C. Guess D. Thought

Which of the molecular below is the main source of energy that a cell uses to carry out its daily actions? A.) NADH B.) NAD+ C.) ATP D.) Glucose

It was a hot summer day. Mattie poured herself a glass of lemonade. The lemonade was warm, so Mattie put some ice in the glass. After 10 minutes, Mattie noticed that the ice was melting and the lemonade was cold.

Match the following items. 1. Rr ... homozygous definition 2. rr ... homozygous, recessive cell 3. identical alleles ... homozygous, dominant cell 4. unlike alleles ... heterozygous, dominant cell 5. RR ... heterozygous definition

Short hair is dominant to long hair in cats. What would be the genotype of a cat with long hair