Biology

13 April, 06:24

Tina asks the question "Does caffeine increase the heart rate of an earthworm?" In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm's skin and measures the rate again. In this test, the heart rate is 68 bpm. The independent variable is

+5

Answers (1)

Know the Answer?

Not Sure About the Answer?

Find an answer to your question 👍 “Tina asks the question "Does caffeine increase the heart rate of an earthworm?" In Test 1, she measures the heart rate by looking at the ...” in 📗 Biology if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.

Search for Other Answers

You Might be Interested in

Use the term osmosis in a sentence

A relationship among alleles where both alleles contribute to the phenotype of the heterozygote is

To what are greater body size and facial gracility documented in homo erectus likely related?

What is the process that released energy from food molecules by producing atp in the absence of oxygen?

What is the carrying capacity for humans on planet Earth? A) 1 million B) 6 billion C) 100 billion D) unknown

New Questions in Biology

What is the largest available source of fresh water for drinking in the hydrosphere? A. Groundwater B. Oceans C. Rivers D. Glaciers

What is an abiotic factor that can be found in a rain forest ecosystem

Explain Why, in winter, most of the meltwater produced by salting the roads will not infiltrate the soil

Which processes are directly responsible for the presence of the different species of wheat and corn shown in the diagram above?

Which diseases are caused by viral infection? Anthrax West Nile Measles Hepatitis A Chicken Pox Tetanus Rabies Bubonic Plague Influenza (flu) Hepatitis B Mononucleosis Gonorrhea Lyme Disease Cholera Whopping Cough Common Cold