Blog

Direct Object Pronouns: complete the following answers with the appropriate Direct Object Pronoun:  lo, la, los, las. ¿Los niños comen las zanahorias? Sí, _____________ comen

CRITICAL THINKING QUESTION: How might the use of pesticides contribute to the evolution of pest resistance, and what are some potential long-term consequences for agriculture?

While testing the effectiveness of a new antibiotic, researchers use three groups with the following treatments: Group 1– receives a placebo Group 2:  receives antibiotic A Group 3:  receives antibiotic B Which  of the groups would be considered a control group?

Which of the following best describes Natural Selection

When using the story of the peppered moths as an example of evolution by natural selection, which of the following was the selecting agent?

Figure A:  (common mushroom) Figure B: (sweet briar ) Figure C:  (Paramecium)   Figure D:  (Common Fern)   Figure E:  (English Oak)   Use the following dichotomous key to identify the scientific name of the organisms listed above. (Note:  It was not possible to italicize the scientific name in the answer list.  Sorry!)   DICHOTOMOS KEY 1a  Organism has leaves ………. go to step 2 1b  Organism does not have leaves ………. go to step 4 2a  Organism produces flowers ……….Rosa rubiginosa 2b  Organism does not produce flowers ………. go to step 3 3a  Organism produces acorns ……….Quercus robur 3b  Organism does not produce acorns ……….go to step 4 4a  Organism is single celled ……….Paramecium caudatum  4b  Organism is multicellular ……….Agaricus bisporus  

A biopsychologist is studying the effects of anabolic steroids on the aggressive behavior of female rats. 24 female rats receive daily injections of a placebo (fake drug), while 24 others receive daily injections of the steroid. Round-the-clock videotapes of the communal cages of all rats allow all aggressive encounters to be counted and timed.  What is the INDEPENDENT variable in this experiment?

The basic unit of life is 

Choose the correct order of classification from MOST inclusive to LEAST inclusive.

Which of the following domains contain the most primitive prokaryotes that live in extreme environments?