Biology High School

Question 1 An investigation was set up to study the effect of an antibiotic on three strains of bacteria (A, B and C). The plates were incubated at 37°C for 48 hours. The diagram of plates 1, 2 and 3 in the bottom row above show the results of the investigation. Agar plates were set up as shown below. Study the investigation and answer the questions that follow. What is the aim of this investigaion? ​

Question 1 An Investigation Was Set Up To Study The Effect Of An Antibiotic On Three Strains Of Bacteria

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Answer 1
The is to study the effect of an antibiotic on three strains of bacteria

Related Questions

The basal lamina arises from which type of tissue?.

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Answer:

The basal lamina is secreted by the epithelial cells.

Explanation:

Hope it helps!!

Because the demand for corn tends to be inelastic, the development of a new, pest-resistant strain of corn would tend to..

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The insertion of pesticide resistance genes in certain transgenic products causes pests and weeds (natural enemies) to develop the same resistance, becoming "super-pests" and "super-weeds".

WHAT ARE TRANSGENIC FOODS?

GMOs are foods that are genetically modified by altering the genetic code. That is, when genes from another organism are inserted into organisms. This procedure can even be done between organisms of different species (insertion of a gene from a virus into a plant, for example) and carried out with

PlantsAnimals and Microorganisms.

With this information, we can conclude that with a new corn transgenic, an alteration can be made in the cultivation environment.

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Which sentence best describes vestigial structures?.

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Answer:

Answer C

Explanation:

I know it best

How do you interact with your environment? Include biotic factors, abocitc factors, and cycles.

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Answer:

go answer that urself lol

Explanation:

noob

In general, abiotic factors like rock, soil, and water interact with biotic factors in the form of providing nutrients. Just as humans mine mountains and cultivate soil, rock and soil provide resources for plants, and plants cycle the nutrients through so they (usually) end up back in the ground where they began.

why have so few dinosaur fossils been found in Antarctica?

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Answer:

fossils are rare since the conditions have to be right for them to form.

Explanation:

Is a boy a gender

A.No

B.Yes

C.Rartard

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Answer:

the answer is a yes

Explanation:

Both “s ex” and “gen der” are related to being a boy or a girl. “S ex” is about a person's bo dy pa rts and how their body grows and develops. A person's s ex is due to a mix of genes and horm ones.

Evolution occurs in response to a change in the environment. Environmental change often involves other species of organisms. Which of the following examples BEST represents an example of coevolution?
Group of answer choices

A. Wolves and dogs share a common ancestor due to the fact that 99.8% of their genes are the same.

B.As a pinyon pine developed large nutritious seeds, the pinyon jay evolved a pouch to carry the seeds.

C. Sharks and dolphins both developed characteristics, such as a light underbelly and a darker upper surface, which helps both blend in with the ocean environment.

D. A fish and a lizard both have similar traits, such as gills and a curved tail while in the embryonic stage of development.

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Answer:

c is the answer

hope it helps you

What’s is biology we are learning it at my school and I don’t know how to focus on 1 thing I go everywhere and it get confusing and it’s really hard

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Answer:

Biology can be troubling, and only comes natural to certain people. It is ok not to understand, just follow along in the textbook if you have one, and listen to the teacher. My teacher talks a little complicated but once in a while you will pick up something interesting. If you really need additional help, there are some Biointeractive videos around the internet, that really helped me to understand what I needed to know.

Explanation:

The definition of Biology in real terms is basically the study of living organisms, that covers a wide variety of subjects related to the organism being studied, such as the Mitosis reproduction, genetics, and how life began on Earth. I hope this helps.

How did you revise your sequence from your initial idea ? Explain how you decided on the sequence . For the Natural Selection activity

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Natural selection is the reason behind evolution.

What is natural selection?

The term natural selection refers to the fact that organisms that possess certain favorable characteristics live long enough to reproduce and pass on these favorable characteristics to their offspring.

In the opinion of Charles Darwin, natural selection is the reason behind evolution and he explained this in his book titled ;"On the origin of species".

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Please help me with my science homework please

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Seashell - From water to sand

That’s the only one I know but sorry

why do sea divers wear special costumes ?

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Answer:

To help them survive.

Explanation:

They wear these suits to help them survive. There is a lot of pressure that is being pushed onto the diver by the water, so they need special equipment to live. They also need these costumes to breathe underwater by using an oxygen tank.

Which landform results from the deposition of materials in a valley during volcanic eruptions

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Answer: Lava Plateau

The axon of a sending neuron is separated from the dendrite of a receiving neuron by a.

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During neuronal communication, the axon of a sending neuron is separated from the dendrite of a receiving neuron by a synaptic gap, also known as synaptic cleft or space.

What is the synaptic gap?

During synapsis, a presynaptic neuron sends information to the postzynaptic cell.

The axon of the sending neuron releases neurotransmitters through exocytosis forward to the dendrite of the postsynaptic cell.

The synaptic gap, or synaptic space, is the space left between the axon of the sending neuron and the postynaptic membranes.

The neurotransmitter travels through the synaptic gap forward to the other neuron.

Once it reaches the target, it binds to its receptors in the postsynaptic membrane.

This binding produces a depolarization of the cell called an excitatory postsynaptic potential.

So, the axon of a sending neuron is separated from the dendrite of a receiving neuron by a synaptic gap, also known as synaptic space.

You will learn more about the synaptic gap at

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The cells that can become many different types as they mature are ___________.

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Answer: Stem cells

Explanation: Stem cells are special human cells that are able to develop into many different cell types. This can range from muscle cells to brain cells. In some cases, they can also fix damaged tissues.

i need answer please​

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Answer:

v

Explanation:

Part A: Bb would be their genotype.

Part B: The offspring would be born with black hair if they were to have any  of the dominant alleles. (BB or Bb) Their fur would be colored white if their genotype was "bb". The uppercase "B" represents the dominant allele and the "b" represents the recessive allele. Since there's "BB" and "bb" genotypes breeding, the only outcome for their offspring would be the "Bb" genotype.

What is an adaptation? Pick one.
a structural, behavioral, or physiological trait that enhances an organism's ability to survive and/or reproduce

the process during which light energy from the Sun is used to convert carbon dioxide and water into oxygen and food

the process through which organisms with advantageous structures or behaviors are naturally selected over organisms that do not possess these traits

a physical or behavioral characteristic that has stood the test of time and is still present after generations of other evolutionary changes

Answers

3rd option is correct

Adaptation is the process through which organisms with advantageous structures or behaviors are naturally selected over organisms that do not possess these traits.

What are the functions of traits?

A trait, as related to genetics, is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative (such as eye color) or quantitative (such as height or blood pressure).

Biological traits describe species' physiology, morphology, life history, and behavior, capturing both inter-specific interactions and the connections between species and their environment.

All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.

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Can someone help me answer this ? I'd like the answer in details because it has 5 Marks & 3 for (d)

​

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Answer:

liver also plays an important role in the metabolism of proteins: liver cells change amino acids in foods so that they can be used to produce energy, or make carbohydrates or fats. ... The liver cells convert ammonia to a much less toxic substance called urea, which is released into the blood

How were cats and dogs domesticated and for what purposes.

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Dogs were originally domesticated to assist people in hunting. There are hundreds of domestic dog species today, but most are pets. Domestication is the process of adapting wild plants and animals for human use. Domestic species are raised for food, work, clothing, medicine, and many other uses.

4. Which statements best describe the climate of a temperate coniferous forest? (Select all that apply.)

They have warm summers.

They receive little rainfall.

They experience cool winters.

They are found in the arctic.

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Answer:

They experience cool winters and

They have warm summers

Explanation:

The temperate evergreen (coniferous) forest has mild summers, cool to cold winters, and more precipitation than the taiga.

Answer:

warm summers and cool winters

Explanation:

I did the test I got 100%

What anchors the periosteum to the underlying bone?.

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Collagen fibers that run from the periosteum's outer layer to the bone matrix firmly bind the periosteum to the bone tissue. These fibers are called Sharpey's fibers.

What is the part of your body used as a reference point when adjusting your head restraint to the appropriate height?.

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Answer:

your ears

Explanation:

Water molecules are sufficiently small that they do not require specific transporters to cross biological membranes. But because they are polar, diffusion of these molecules across the phospholipid bilayer is slow. Peter Agre won the 2003 Nobel Prize in Chemistry for his discovery that the rapid movement of water into and out of cells occurs via:________.

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Via aquaporins, integral membrane proteins

During MEISOSIS, each daughter cell receives a full, complete set of chromosomes
True or False​

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I think the answer is false

Hope I helped!

Explanation:

Alaine looks outside her window and observes that it is hailing outside. Which part of the water cycle is she watching?.

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Precipitation! Even though it is not rain it is still precipitation as it was rain but the cold air freeze it as it falls.

Answer: Precipitation

What is the main disadvantage of overdraft protection?
A. Banks usually charge a fee when it is used.
B. Banks take several days to process the transaction.
C. It keeps a check from being returned due to insufficient funds.
O D. It requires customers to maintain a positive account balance.

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Answer:A. Banks usually charge a fee when it is used.

Explanation:

Answer: A. Banks usually charge a fee when it is used.

Explanation:


1. Which of the following are common characteristics of birds and fishes?

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Answer:

Common characteristics of birds and fishes are:

They can have Respiration.

They can move from one place to another.

Both belong to vertebrates. Both have streamlined body. Both lays calcareous eggs. Both have scales

What is the difference between breathing rate and the rate of
respiration?

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Answer:

Respiration Rate is formed up from the breathing rate

Explanation:

A person's respiration Rate is the number of breaths u take per minute

What’s the difference of anaerobic respiration and aerobic respiration

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Answer:

Unlike aerobic respiration, anaerobic respiration does not need oxygen. It is the release of a relatively small amount of energy in cells by the breakdown of food substances in the absence of oxygen.

Have a good day <3

Explanation:

Aerobic respiration takes place in presence of oxygen; whereas anaerobic respiration takes place in absence of oxygen. Carbon dioxide and water are the end products of aerobic respiration, while alcohol is the end product of anaerobic respiration.

You are examining a new kind of cell. This cell is quite thick and has an interesting surface. You only have a small number of these cells, so it would be great if you could keep them alive while you are examining them. What kind of microscope would you use in this situation? Include at least two reasons why you chose your microscope.

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Answer:

electron microscope

Explanation:

electron microscpe is more powerful than usual microscope

Mangrove forests play an important role in _______. A. Fisheries b. Coastal protection c. Wildlife habitat d. All of the above.

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Mangroves swamps or forests are productive wetlands and grow in saline and humid climates.  They play an important role in fisheries, coastal protection and wildlife habitat.

What is the importance of mangrove forests?

The mangroves are located in the subtropical and the tropical region where the climate is high in humidity and have saline and waterlogged forests.

The mangroves interact with the ecosystem through various means and help other aquatic organism for shelter and reproductive sites.

They help the ecosystem in maintaining water quality and help in coastal protection along with aiding the wildlife habitat. The fishes reside in the roots and the forests structures and lay their eggs.

Therefore, option d. all of the above is correct.

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Answer:

All of the above

Explanation:

Got it right on edge2020

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