Why were most test tubes incubated at 37 ⁰C?

Answers

Answer 1

Answer:

Optimal Growth Conditions

Explanation:

Different bacteria like to grow at different temperatures.  By changing the temperature. Organisms that grow best at human body temperature, which is approximately 37 degrees Celsius (98.6 degrees Fahrenheit), are called mesophiles.

Hope this helps.


Related Questions

5. Which of the descriptions below best describes photosynthesis?
a. CH20. + 60, - 600, + 6H2O
b. sunlight energy is stored in carbon-based molecules like glucose
c. an ATP-making process that occurs in mitochondria
d. chemical energy is released when glucose is broken down into
carbon dioxide

Answers

Answer:

i think d but not too sure.

Explanation:

I think it is either d or b but pretty sure d

What type of molecule "unzips" DNA to facilitate the process of replication? *

a nucleic acid
b lipid
c carbohydrate
d protein

Answers

Answer:

c

Explanation:

Gross production is the amount of energy left after cellular respiration.
ОТ
OF

Answers

Answer:

False

Explanation:

There is a quizlet on energy transfer and this is on there.

What is another term for the responding variable?
primary variable
dependent variable
independent variable
uncontrolled variable

Answers

Answer: The answer is the dependent variable

Explanation:

Answer:

the dependent variable would be the answer

Explanation:

i took the test

is a product of glycolysis, pyruvate processing, and the citric acid cycle.
CO2
ATP
NADH
FADH2

Answers

the correct answer is NADH

ATP is a product of glycolysis, pyruvate processing, and the citric acid cycle.

Glycolysis is the metabolic pathway by which glucose is degraded up to two pyruvate molecules, while energy is produced in the form of ATP and NADH.

It takes place in a series of nine reactions, each catalyzed by a specific enzyme, to form two molecules of pyruvic acid, with the production of ATP.

The Krebs cycle produces the release of acetyl-CoA resulting in the formation of an acid with six carbon atoms, citric acid.

A series of sequential reactions then occur, each mediated by a specific enzyme.

In one of the reactions of the cycle, a molecule of ATP is produced, this molecule as an energy intermediate can take energy in catabolic reactions or give it up in anabolic reactions.

Therefore, we can conclude that ATP is a product of glycolysis, pyruvate processing, and the citric acid cycle.

Learn more here: https://brainly.com/question/2147166

What would happen if complexes I-IV of the electron transport chain pumped protons in the opposite direction?

a. Too much ATP would be synthesized.
b. None of the other answer options is correct.
c. No ATP would be synthesized.
d. There would be too many electrons in the mitochondrial matrix.

Answers

Answer:

The correct answer is - c. No ATP would be synthesized.

Explanation:

In the electron transport chain there are four complexes, complexes I-IV, pumps the protons from the matrix of the mitochondria into the intermembrane space. This is the downhill movement of the electrons that helps in synthesizing the ATP molecules.

If the complexes move or pump the electron uphill or against the gradient there would be no ATP formation as there would be no interchange of proton and electron interchange.

Please help. This is due today :(

Label the following.. Word bank is below

Answers

label what..? where’s the word bank

List which cell has the listed characteristics
1 Extensions
2 Matrix
3 No nucleus
4 Striated
5 Used in the immune system.

Answers

Red blood cells have no nucleus

White blood cells are used in the immune system

Skeletal muscle cells are striated

Cartilage cells make up the cartilage matrix
and Neurons have extensions

Compare the effectiveness of the different antibiotic drugs and chemical disinfectants. Which seems to be better at controlling bacterial growth

Answers

Answer:

Antimicrobials are classified as selective and non-selective, selective are antibiotics, non-selective are surface disinfectants that are not used in human organisms such as antibiotics.

Explanation:

That is why antibiotics are considered more effective to inhibit the growth of bacteria, since the special antibiotic that covers a certain spectrum of bacteria is selected, that is what gives them specificity and greater effectiveness, some are bacteriocidal and others bacteriostatic, considering the former as those that generate the defined death of the bacteria, and assures us more of bacterial death or inhibition of proliferation.

A brown mouse is crossed with a heterozygous black mouse if the mother has a litter of four what are the chances of one of them being brown

Answers

Answer:

I used a Punnet Square to determine what percentage of 1 of the mice would be brown.

Explanation:

What are common hazards in risk assesment?

Answers

adverse weather, biological agents, electricity, lone working, and etc.

!!!!!URGENT!!!!!!!!

From cells to major organ systems, the architecture of the body and the functions the body can perform are very closely related. Can you identify body cells, tissues, organs, systems that demonstrate this relationship and discuss its significance?

Answers

Explanation:

body cells- intake the nutrients and specialized into to carry function.

tissues- have similar structure to function well in body like, connective tissue, muscle

organs- carry different identity of function in body like, heart(to pump blood) kidney( for filter and excrete wastes

1.what are three factors that affect the rate of chemical reactions?

2.select one of these factors and describe how it affects chemical reactions within our bodies.

Answers

Explanation:

The factors that affects the rate of chemical reactions are;

Nature of reactants Concentration of reactants or pressureTemperature Presence of catalystSunlight

In our body, the nature of reactants is very important. A food substance in solid form undergoes slow digestive process because it has little surface area exposure for the action of digestive chemicals. Most solid food are usually chewed in the mouth before digesting them to increase their surface area.

The increasing order of food digestion is;

   lumps to granules to powder and to liquids.

4. Which is a factor that keeps Earth in orbit around
the Sun?
A. the gravitational pull of the Sun
B. the orbital path of the moon
C. the continuous motion of the universe
D. Earth's changing speed and direction

Answers

Answer: A. the gravitational pull of the Sun

The sun is providing a centripetal force pulling the earth inward toward the sun. At the same time, the inertia of the earth is making it want to move forward in a straight line. The two forces work together to create the net effect of the earth orbiting around the sun. Other planets, moons, asteroids, and celestial objects exert gravitational forces on the earth as well, but nowhere near the amount of what the sun does.

I think it’s A because it only makes since

The skeletal system is the framework of the human body, comprised of bones, joints, and connective tissue. The integumentary system forms the largest system of the human body and is made up of skin, hair, nails and glands. How do the skeletal and integumentary systems work together to protect the human body?
A. The two systems initiate muscle contractions that protect the human body.

B. The two systems provide a barrier between the outside environment and the internal organs of the body.

C. The two systems initiate an immune response that protects the human body.

D. The two systems deliver signals between the outside environment and brain.

Answers

Answer:

A.

Explanation:

by maintaining the right amount of pressure, the right temperature, and controlling what comes into the body, your skin protects those muscles that help you move around.

Cells are usually very small. Why is it an advantage to have many small cells instead of one very large cell?
Select all that apply.
b
OOOO
Having a larger volume lets the organelles float around more.
The surface area of the cell determines how much material can be moved in and out.
The larger surface area prevents material from moving in and out of the cell.
It is important for cells to be able to move material in and out of the cell.
c
d

Answers

Answer:

C.

Explanation:

What causes Seismic Waves?

-Release of energy along a fault
-Tsunami waves hitting the shore
-Seismograph Stations
-Hurricanes

Answers

Release of energy along a fault

The convection cycles of mantle are the main cause of movement of what part of the Earth?

Answers

Answer:

The crust ( I think)

Explanation:

Which of these is a condition where the endometrial lining that is normally supposed to only be inside the uterus, ends up outside the uterus (for instance, in the pelvic cavity) and causes extreme pain during menstruation? This condition affects up to 1 in 4 women.

Answers

Answer:

Endometriosis is called the pathology

Explanation:

Endometriosis is a pathology where fibroblasts or connective tissue cells proliferate outside the fallopian tubes in the abdomen, close to the intestine, and adjacent to the ovaries, by proliferating and reducing the space between the organs, the pressure of the terminals increases nervous and during menstruation it hurts.

They are benign proliferative cell foci.

What is the stomie number of this atom?
A,b,c 8,13,9,5,4

Answers

Answer:

The atomic number is the number of protons (positive charge) in an atom.

Explanation:

I don't know the atomic number of your atom because it differs for all atomes, just count the number of positive charges and thats the answer. HOPE THIS HELPS!!!

↖(^ω^)↗

1) How is energy transferred from one organism to another?​

Answers

Answer:

Eating

Explanation:

Organisms eat one another to get energy.

Eating (0987466890986521134456789000)

Please tell me how does water flow through sponges in order​

Answers

Answer:

Small and tube shaped, water enters the sponge through dermal pores and flows into the atrium. Choanocyte flagella create the current to expel it through a single osculum. Note that water enters the sponge through a modified cell known as a porocyte.

Explanation:

Hope this helped, Have a Wonderful Day!!

WILL MARK YOU!!! HELP!
Where does sugar enter the blood?

Answers

I’m pretty sure it’s your veins

Answer:

When the stomach digests sugar it turns into glucose. Glucose is then processed in the stomach and small intestines rather absorbed and then released into the bloodstream.

Explanation:

A diagram that is used to show the loss of energy as you go forward in a food chai
a.) food web
b.) energy pyramid
c.) concept map
d.) trophic levels

Answers

Answer:

tropical levels ........

( please answer I uploaded this question 5 times now)
Which of the following statements best describes negative feedback loops?

A. They respond to changes with changes in the same direction, to move a value toward an endpoint.
B. They produce negative outcomes for the organism.
C. They aren't used often in maintaining homeostasis.
D. They respond to changes with changes in the opposite direction, to keep a value in the optimal range.

Answers

Answer:

D. (Iḿ only like 98% sure honey but I hope this helps ya)

Explanation:

Answer: C because i looked it up  and i have a good feeling hope i helped

In 3-4 sentences, please describe the importance of the diagram below. What is so significant when comparing the about the F1 and F2 generation?

Answers

The F1 generation has a both have the dominant (tall)gene while in the F2 generation we see a recessive (short)plant.
The F2 plants can be assumed to be heterozygous dominants because of their ability to produce recessive short plants.

The group of whales is an example of what

Answers

Answer:

of scariness

Explanation:

contains good bacteria that helps remove wastes

Answers

Answer:

Lymph

Explanation:

A colorless or faintly yellow fluid that helps remove wastes ,toxins ,and other harmful substances from the body ;also known as lymphatic fluid or interstitial fluid.

Unscramble the word heenagwirt

Answers

Answer:

Weathering

Explanation:

You can use websites if it helps to

answer: weathering

explanation:

Please Answer Quick!!! 2. How are the three mutated strands similar to each other?

Answers

Answer:

they are both long

Explanation:

i had this question yesterday

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