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
Tju [1.3M]
3 years ago
10

A bacteria culture begins with 15 bacteria which double in amount at the end of every hour. How many bacteria are grown during t

he 12th hour?
Biology
1 answer:
irakobra [83]3 years ago
4 0
Here is a list showing how the bacteria grows:

Begin      -   15
1st hour   -   30
2nd hour  -   60
3rd hour   -  120
4th hour   -   240
5th hour   -   480
6th hour   -   960
7th hour   -   1,920
8th hour   -   3,840
9th hour   -   7,680
10th hour -   15,360
11th hour -   30,720
12th hour -   61,440

As you can see, the number of bacteria present is doubled at the end of each hour, as the question states. However, the question is not asking for the total number of bacteria at the end of the 12th hour; it is asking for the bacteria GROWN during the 12th hour.

Because there were 30,720 bacteria at the end of the 11th hour, and 61,440 at the end of the 12th, the number of bacteria that grew during that last hour must be 61,440 - 30,720 = 30,720 bacteria.

(P.S. the answer would be 61,440 if it was asking for the TOTAL number of bacteria at the end of the 12th hour)
You might be interested in
During what cycle are sugars produced in the chloroplast
iren2701 [21]

The Calvin cycle is the cycle where in sugars are produced in the chloroplast. Calvin cycle is also known as the Calvin-Benson cycle. Calvin cycle has three stages this is fixation, reduction, and regeneration.  Calvin cycle is needed in Photosynthesis.    

3 0
3 years ago
Which of the following would not be included in a description of an organism's niche? a. its trophic level b. its color c. the h
IRISSAK [1]

Answer:

C

Explanation:

This is because niche talks about tje role of an organism.

Considering the humidity of the organism is not given a role to the organism.

7 0
3 years ago
Galactosemia is a metabolic disorder characterized by the inability to metabolize the sugar galactose. People with galactosemia
Umnica [9.8K]

Answer:

Genetic mapping for unequivocal identification of the potentially causative mutation  

Explanation:

Galactosemia is a genetic disorder caused by mutations in the Galactose-1-phosphate uridylyltransferase (GALT) gene, which encodes an enzyme involved in the metabolism of galactose. Gene mapping is a technique widely used in genetics to identify the position of one locus a chromosome by using molecular markers to estimate genetic distances. Genetic mapping provides useful evidence in order to identify when a disease that is transmitted from parent to offspring can be associated with one or more genes and then determine which gene/s is/are responsible for this condition.

7 0
4 years ago
The blood type of the donor and recipient must be compatible for a blood transfusion to occur. If they two are not compatible, a
Vladimir [108]
A+,A-,O+ and O- can give to blood type A+
8 0
3 years ago
Which organ can hamper the digestion of fats
aksik [14]
The pancreas produces specific fat-friendly enzymes (e.g. pancreatic lipase) that helps to chemically break fats into smaller molecules (fatty acids and glycerol), which are then in a more suitable form to be absorbed in the small intestine.
4 0
3 years ago
Other questions:
  • Which of the following types of data organizers is best able to give a quick view of the relationship between parts of a data se
    7·2 answers
  • PLEASE HELP!! I WILL RATE BRAINLIEST!!!! THIS IS FOR 25 POINTS
    6·1 answer
  • What instrument was essential to the development of the cell theory?
    7·2 answers
  • 16. What are the substances that constitute the chromatin? What is the difference between chromatin and chromosome?
    14·1 answer
  • What are some of the characteristics of life that plants must fulfill?
    11·1 answer
  • Which ocean zone would be most damaged by the construction of a new resort?
    14·1 answer
  • I
    13·1 answer
  • If we place a dialysis tube filled with water that is a 10% salt solution into a beaker that has a 5% salt solution water will..
    11·1 answer
  • Can you get scholaships for community college? What scholarships are good for community college
    14·2 answers
  • CAN someone please help asap
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!