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
emmasim [6.3K]
3 years ago
9

In a bacteria growing experiment, a biologists observes that the number of bacteria in a certain culture triples every 2 hours.

After 8 hours, it is estimated that there are 2 million bacteria in the culture. What was the original population of the bacteria?
Health
1 answer:
kozerog [31]3 years ago
3 0

Answer:

The answer is  approximately 24,691 bacteria

Explanation:

We were told that after 8 hours the bacterial population was 2 million.

∴ 8 hours ⇒ 2,000,000

We were also told that the population triples after every 2 hours. Which means that the original amount is multiplied by 3 after every 2 hours. Example if the population was 1000 at 1 pm, at 3 pm, the population will be 1000×3 = 3000.

So next, let us find how many two hours are there in 8 hours:

8 = 2+2+2+2

hence there are 4 two hours in 8, so we can conclude that after 8 hours, the population has tripled 4 times. which are at 2 hours, 4 hours, 6 hours and 8 hours. So working backwards from 8 hours, we have;

2,000,000 (after 8 hours)

2,000,000 ÷ 3 = 666,666.67 (after 6 hours)

666,666.67 ÷ 3 = 222,222.22 (after 4 hours)

222,222.22 ÷ 3 = 74,074.07 (at 2 hours)

74,074.07 ÷ 3 = 24,691.35

hence the original population at 0 hours = 24, 691 bacteria

You might be interested in
When you sit up straight for a long time, the __________ holds a lot of your body weight.
marishachu [46]

Answer: i believe the answer is lower back

Explanation:

The flexor muscles are in the front and include the abdominal muscles. These muscles enable us to flex, or bend forward, and are important in lifting and controlling the arch in the lower back. The extensor muscles are in the back. These muscles allow us to stand upright and lift objects

7 0
3 years ago
Which of the following herbal products is thought to treat anxiety, relieve stress and promote sleep?
Alex

Answer:

Could be: <em>Passiflora inc.; Valeriana officinalis, for example. </em>

Explanation:

 <em>Passiflora incarnata</em> is used to help reduce and possibly eliminate insomnia, anxiety, inflammation, menopausal symptoms, attention deficit hyperactivity disorder, among others.  Passiflora incarnata is approved for nervous restlessness, insomnia and gastrointestinal problems and all above ground parts of the plant including the stem, flowers and particularly the leaves are considered useful.

  <em>Valeriana officinalis</em> is a very old medicinal plant, but it has only recently gained space and respect among scientists. After studies, the efficacy of the use of valerian in combating insomnia has been proven, and today is widely used as a herbal medicine. It also has benefits against anxiety. Because of its sedative and relaxing properties, valerian serves as a natural tranquilizer against depression and stress, and is suitable for numerous other symptoms.

5 0
3 years ago
What can dietetic professionals do to combat myths and misinformation?
Arada [10]

Answer:

Food fads, fad diets, health fraud, and misdirected health claims are all types of nutrition misinformation.

A nutrition expert is known as a registered dietitian (RD) or a licensed dietitian (LD), and has a specialized degree in dietetics, nutrition, public health, or related sciences.

Do not rely on manufacturer claims when determining if a product is safe. Instead, seek out unbiased science-based research.

Consult a medical professional with questions about dietary supplements including vitamins, minerals, herbs and botanicals.

The best way to protect against questionable health products and services is to be an informed consumer. Be aware of the common claims and themes that accompany nutrition misinformation.

Explanation:

hope this helps

7 0
2 years ago
WILL MARK BRAINLIEST!!! besides proteins and fats, what else provides the most of the bodys nutritional needs? one word answer p
GrogVix [38]

Carbohydrates

Thanks for the brainiest!

8 0
3 years ago
Read 2 more answers
Explain one thing you learned from the video about what really causes the skin to burn in the sun.
Sphinxa [80]
Sunburn is caused by too much exposure to ultraviolet (UV) light. UV light may be from sunlight or artificial sources, such as sunlamps and tanning beds. Melanin is the dark pigment in the skin's outer layer that gives skin its normal color


Hope I helped
6 0
3 years ago
Other questions:
  • If your heart is not strong enough or efficient enough, it is difficult to
    10·2 answers
  • What are your two favorite citations from the textbook regarding adolescence? Why are these citations appropriate to your discov
    9·1 answer
  • Which of the following is the most realistic goal for attaining better resilience?
    8·1 answer
  • Reginald eats a high-fat diet and does not exercise. He is at risk for developing _____.
    15·2 answers
  • Write down two restrictions you know about for alcohol and tobacco.
    10·2 answers
  • A client is admitted to the hospital with an exacerbation of his chronic gastritis. what recommendation should the nurse make wh
    7·1 answer
  • A high heart rate is a message from your body that you are
    7·2 answers
  • Describe three guidelines for selecting a fitness or health club
    10·1 answer
  • According to the centers for disease control and prevention, how many teens report physical, verbal, emotional, or sexual abuse
    6·1 answer
  • List four broad goals of healthy people 2020
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!