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
Mandarinka [93]
4 years ago
15

A student placed a disk of filter paper in each of the following solutions: disinfectant 1, disinfectant 2, disinfectant 3, and

distilled water. While the four disks were soaking in their respective solutions, she streaked a sterile nutrient agar dish with a culture of E. coli bacteria. Then, she placed each disk carefully onto the nutrient agar dish, placed the lid on the dish, taped it shut, and incubated the dish at 37°C for several days. The diagram shows how the nutrient agar dish looked on Day 1 and Day 4. The shaded portion of the plate on day 4 indicates the bacterial growth. What is the control in the experiment?<br />
a. Disk soaked in disinfectant 1<br />
b. Disk soaked in disinfectant 3<br />
c. Disk soaked in disinfectant 2<br />
d. Disk soaked in distilled water
Biology
1 answer:
andrey2020 [161]4 years ago
7 0
Correct me if i get this wrong but im gonna go  with letter D it just feels right!
You might be interested in
Although nitrogen gas makes up 78% of the atmosphere, we can't use it because _____.
aev [14]
Although nitrogen gas makes up 78% of the atmosphere, we can't use it because nitrogen atoms must be broken apart first before. This nitrogen is very much packed and bonded with its atoms and would be useless to use since it can't be used for plants. 


4 0
4 years ago
Read 2 more answers
Describe some changes that occurred during the process of human evolution by comparing the first primates to the first hominids?
wolverine [178]

Answer:Rather, it could look more like one branch or the other branch, or something else entirely. Did the common ancestor of humans and chimps conform to the ape-man myth and live in the trees, swinging from vines? To answer this, we have to focus not only on anatomy but on behavior, and we have to do it in a phylogenetic context.

3 0
3 years ago
Where is most of a healthy person’s fat stored?
Amiraneli [1.4K]

The correct answer is:

Most of a healthy person’s fat stored under the skin and around the organs.

|Huntrw6|

8 0
3 years ago
Without leaves green plants could not
Aleksandr [31]

Answer:Without leaves green plants could not live.

Explanation:because from leaves a plant take breath or do respiration. In leaves of plants there are small pores or stomata from where they breathe. So if we can't breathe we can't live.so,Without leaves green plants could not live.

5 0
3 years ago
The relationship between population growth and resources can be described as
Lina20 [59]

A

The relationship between population growth and resources is inverse; as one goes up the other goes down.

Explanation:

An inverse relationship is one where when one variable is affected positively, the other is negatively impacted, and vice versa. In other terms, when one variable increases the other decreases.

When population growth increases, the strain on the resources increases, due to increased competition, and hence the resources decrease. This is why ideally apopulation cannot grow indefinitely because resources are always limited. The population growth will start to levels off as it reaches carrying capacity. When the resources become depleted the population growth plummets.

Learn More:

For more on carrying capacity of a habitat check out;

brainly.com/question/10921673

brainly.com/question/12829902

#LearnWithBrainly

5 0
4 years ago
Other questions:
  • The polar bear is one of the largest carnivores. It hunts mainly seal on the Arctic ice. What could be a factor that adversely a
    6·2 answers
  • Question 2
    6·2 answers
  • What most likely caused the rocks in this region to weather
    11·1 answer
  • I need help please could someone
    5·1 answer
  • Many ocean-dwelling animals can use sound waves to communicate with other animals and locate food and obstacles over longer dist
    10·2 answers
  • There are 3 basic structural types of joints: fibrous, cartilaginous, and synovial. If a joint does NOT move, you can assume tha
    12·1 answer
  • Especially with bacteria and fungi, the most common manifestation of growth on solid media is the appearance of
    10·1 answer
  • Explain how the processes of sedimentary rock formation change the geosphere.
    12·1 answer
  • _____ splits water into 1/2 O2, H , and e- . A structure of a thylakoid. Letters from A to E indicate definite structures. Lette
    7·1 answer
  • Oligo polysacchoride importance in blood transfusion and tissue organt transplant
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!