1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brut [27]
3 years ago
8

Hypothesis A: If heart rate is related to caffeine intake, then coffee drinkers will have higher heart rates.

Biology
2 answers:
Tpy6a [65]3 years ago
4 0
Hypotheses B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.
Katen [24]3 years ago
3 0

Answer: D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

Hypothesis A and B both are suggesting that caffeine intake is related to higher heart rate. But hypothesis B is proving it more certainly by suggesting the affects of caffeine intake on heart rate. As, heart rate of most people will be higher 30 minutes after they drink a cup of coffee is testifying the fact, that higher heart rate is related with caffeine intake.

Therefore, hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

You might be interested in
Help please!!! :( 10 POINTS
matrenka [14]

Answer:

75% i think

Explanation:

because if it is dominant its most likely always gonna be that

6 0
2 years ago
The Krebs cycle will not take place if ?
jenyasd209 [6]
If there is ATP and ADP in the Cell Cycle
3 0
3 years ago
Please answer this question + reasoning :)
kati45 [8]
The answer should be A. Active transport
6 0
3 years ago
Read 2 more answers
In pea plants, the allele for purple flowers is dominant over the allele for white flowers.
aev [14]

Answer:

the genotype is PP

the phenotype is PURPLE

Explanation:

5 0
3 years ago
Read 2 more answers
How do facilitated diffusion and active transport differ? Is osmosis an example of facilitated diffusion or active transport?
castortr0y [4]
Note that Facilitated diffusion , Active transport and Osmosis are three different ways of transporting substances across the cell surface membrane.

Facilitated diffusion is the movement of a substance from high to low concentration , similar to simple diffusion , but due to the complexity of the cell surface membrane , polar molecules and ions cannot just pass like that , so they pass through specific carrier and channel proteins in the cell surface membrane and so we call it facilitated diffusion.

For Active transport , it's the movement from low to high concentraion using energy from ATP

For Osmosis , it's totally different . You only name osmosis when its all about water . Its the net movement of water from high water potential to low water potential through partially permeable membrane .
If you're doing AS , you'll be familiar with Endosmosis and Exosmosis.
3 0
3 years ago
Other questions:
  • The __________ is the main control center for the autonomic nervous system. A. forebrain B. thalamus C. hypothalamus D. cerebrum
    9·2 answers
  • What is the main primary producer in a coral reef ecosystem?
    9·2 answers
  • In the carbon cycle, all animals must consume
    11·1 answer
  • What is the most endangered shark species
    14·1 answer
  • Which of the following best describes the flow of energy through a food chain
    10·2 answers
  • Foods that allow microorganisms to grow are called parasites.*
    13·1 answer
  • In which soil layer would you find loam that is rich in humus
    7·1 answer
  • Elijah wanted to learn more about the growth pattern of bacteria, so he performed the following experiment.
    14·1 answer
  • Which is a density dependent factor?
    13·1 answer
  • How many days does it take for a turkey egg to hatch
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!