A biologist is interested in studying the effect of growth-enhancing nutrients and different salinity (salt) levels in water on the growth of shrimps. The biologist has ordered a large shipment of young tiger shrimps from a supply house for use in the study. The experiment is to be conducted in a laboratory where 10 tiger shrimps are randomly placed into each of 12 similar tanks in a controlled environment. The biologist is planning to use 3 different growth-enhancing nutrients (A, B, and C) and two different salinity levels (low and high). List the treatments that the biologist plans to use in this experiment. Using the treatments listed in part (a), describe a completely randomized design that will allow the biologist to compare the shrimps' growth after 3 weeks. Give one statistical advantage to having only tiger shrimps in the experiment. Explain why this is an advantage. Give one statistical disadvantage to having only tiger shrimps in the experiment. Explain why this is a disadvantage.

Answers

Answer 1

a) The treatment groups are

1) Three different Growth-enhancing nutrients A, B and C

2) Salinity levels at two different levels low and high

b) Experimental units : Young tiger Shrimps

c) There are two independent variables

1) Salinity levels

2) Growth enhancing nutrients

d) Response variable : Growth of shrimps

A growth curve is a graphical depiction of a phenomenon's evolution through time. A growth curve might be a graphic that shows the rise in population of a country over time. The availability of nutrients and energy is one of the most important variables for growth.

Temperature, moisture, pH levels, and oxygen levels are the four key physical and chemical conditions regulating microbial growth. Microbial proliferation is influenced by intrinsic, extrinsic, and implicit dietary components, as well as diverse food processing processes. These variables influence microbial growth in food as well as the specific metabolic pathways that microbes utilise to create energy and metabolic byproducts.

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Related Questions

Which of the following is an important step in the preparation of a proper bacterial smear?
a. Allow the loop to cool after it has been flamed.
b. Label the underside of the slide (the downward-facing side of the slide) with the type of microbe you will be transferring.
c. Repeat inoculations such that the smear is as thick and undiluted as possible.
d. Apply methane to clean the slide prior to smearing inoculum.

Answers

Allow the loop to cool after it has been flamed is an important step in the preparation of a proper bacterial smear

A bacterial smear is a small layer of bacteria that is deposited on a slide or a tray for staining. The bacteria are fixed on the slide, and this stops the bacterial sample from being washed away during staining. A crucial step in creating a healthy bacterial smear is allowing the loop to cool after burning.

This is due to the fact that blazing the loop sterilises it by eliminating any bacteria that may be present on the loop, but if the loop is still hot when a sample is taken, the bacteria may be "fried" rather than collected. For effective identification and analysis, it is crucial that the bacteria are gathered in their natural state, which is ensured by allowing the loop to cool.

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What could occur if the feedback loop of the knee reflex was cut off at any point along its path?

Answers

This is an illustration of a reflex, which is an uncontrollable muscle reaction brought on by the tap of a rubber hammer on a tendon.

 

What is a feedback loop?

The absence of reflex reactions may indicate injury to the spinal cord, a nerve root, a peripheral nerve, or a muscle.

Two positive feedback loops are involved in the defecation reflex. These loops are the stretch receptors in the sacral parasympathetic system and the rectal walls.

Therefore, a reflex is an uncontrollable muscle reaction brought on by the tap of a rubber hammer on a tendon.

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Read the paragraph from the section "A Library Of Life."
Sadye Paez is a leader on the project. Mapping the genome of tens of thousands of animals
could easily take 10 years, she said. Even so, giving scientists this kind of information could help
to save rare animals. It would give conservationists and biologists a new set of tools, she said.
How is Harris Lewin MOST likely to respond to this paragraph?
(A)
(B)
(C)
(D)
He would disagree that the project could take up to 10 years.
He would disagree that the project will help protect endangered animals.
He would agree that the project is worthwhile despite how long it will take to finish.
He would agree that the project will take too long to save many species.

Answers

'He would agree that the project is worthwhile despite how long it will take to finish'  is Harris Lewin's most likely response to this paragraph.

What is a genome?

A genome is an organism's complete set of genetic material. It is made up of DNA and contains the instructions for an organism's growth, development, functioning, and reproduction. In humans, the genome consists of 23 pairs of chromosomes, containing a total of 3 billion base pairs of DNA.

He would agree because the information it provides is invaluable. Knowing the genome of tens of thousands of animals could help to save rare animals and give conservationists and biologists a new set of tools to work with. The potential benefit of this project makes it worth the effort and time it will take to complete.

Hence, Option C is correct.

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Two organisms, Paramecium caudatum and Paramecium aurelia, were observed in a drop of pond water on a slide. These two organisms are members of A) the same genus and species B) different species and different genera C) the same species but different genera D) the same genus but different species

Answers

This depends on the idea that genuinely harmed patients ought to have something like 10 minutes of scene-time adjustment by crisis clinical personnel preceding vehicle to conclusive consideration at an emergency room.

Paramecia can possibly spread destructive sicknesses in the human body by irregularity, however, they can likewise serve an advantage to people by obliterating Cryptococcus neoformans, a sort of illness brought about by extraordinary organisms (from the variety Cryptococcus) that can spread in the human body and influence the resistant framework.

Paramecia assume a part in the carbon cycle in light of the fact that the microscopic organisms they eat are much of the time found on rotting plants. Paramecium will eat the rotting plant matter notwithstanding the microscopic organisms, further supporting disintegration. Paramecia can be utilized as model organic entities in research.

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Why was penicillin considered a miracle drug?

A. It is made from mold.

B. It cures deadly diseases.

C. It prevents bacterial infections.

D. It was discovered during World War I.

Answers

Hi they

B is answer

why? well because when they discover it this changes the world. this drug helped with infections or bacterial and more.

Why can't calico cats reproduce?

Answers

Answer:

How do calicos reproduce? Due to their unique genetic makeup (and the fact that male calico cats are born sterile), calico cats cannot actually be bred. Rather, nature produces these colorful kitties randomly.

Explanation:

Fill the boxes to describe how precpitation forms.​

Answers

Rain, hail, and snow are the three most frequent kinds of precipitation. Water droplets that fall to the Earth's surface as precipitation are referred to as rain.

What is precipitation?

Raindrops develop around minute cloud condensation nuclei, such as dust particles or pollutant molecules.

Any product of barometrically condensed water vapor falling to the ground is referred to as precipitation. Rain, sleet, snow, hail, and showers are among the main forms of precipitation.

Therefore, precipitation occurs when a section of the environment becomes submerged in water vapor, causing the water to collect and "precipitate".

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How do limiting factors change the carrying capacity?
7th grade

Answers

LIMITING FACTORS CAN INCREASE OR DECREASE…

ayuda porfavor es para hoy :(

Answers

Answer:

B

Explanation:

si mi pensamiento es correcto, sería B. porque tienes las masas de las moléculas y esas se quedan con el símbolo periódico para ellas.

In a high latitude rainforest,the dominant type of photosynthesis is most likely to be
A) both C3 and CAM.
B) C4.
C) CAM.
D) both C4 and CAM.
E) C3.

Answers

The disadvantage of C4 photosynthesis is the additional energy, in the form of ATP, required to pump the 4-carbon acids to the bundle sheath cell and the 3-carbon complex back to the mesophyll cell for PEP production.

What kind of molecule makes up a photosystem's reaction center?

A crucial chlorophyll molecule is located in the center. One of its electrons is elevated to a higher energy when it absorbs light. After passing through a number of other colored molecules and onto plastoquinone A, this supercharged electron moves downhill before crossing over to plastoquinone B.

Why do C4 plants thrive in tropical climates?

For these plants, where the environment favors both water loss and the irritating photorespiration reactions caused by RUBISCO.

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Which term best describes the component of a control system that receives information about the status of a homeostatically regulated variable and initiates an appropriate response

Answers

The integrating center best describes the component of a control system that receives information about the status of a homeostatically regulated variable and initiates an appropriate response

.The brain's homeostatically often houses the integrating centre, which sends messages to various parts of the body telling them how to react to stimuli. For instance, when you place your palm on a hot surface, such as a stove, your brain's integrating centre receives a signal from your skin cells warning you that appropriate are in danger. The hypothalamus serves as the integrating hub for the negative feedback loop that the controls body temperature.

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The integrating center best describes the component of a control system that receives information about the status of a homeostatically regulated variable and initiates an appropriate response

.The brain's homeostatically often houses the integrating centre, which sends messages to various parts of the body telling them how to react to stimuli. For instance, when you place your palm on a hot surface, such as a stove, your brain's integrating centre receives a signal from your skin cells warning you that appropriate are in danger. The hypothalamus serves as the integrating hub for the negative feedback loop that the controls body temperature.

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What keeps the temperatures on the Pacific Coast relatively moderate year-round?

A. the clouds hanging over the coast

B. the direct sunlight received all year

C. the large population of California

D. the ocean currents

Answers

Answer:

Ocean Currents

Explanation:

What was the main aim of Mendel's experiment?

Answers

The main aim of Mendel's experiment was to understand the principles of inheritance of genetic traits in pea plants.

He performed a series of controlled crossbreeding experiments, where he carefully selected and crossbred pea plants that exhibited specific traits, such as seed color (yellow or green) and seed shape (round or wrinkled). He then recorded the characteristics of the resulting offspring and compared them to the characteristics of the parent plants. Through these experiments, Mendel discovered that certain traits were inherited in a predictable pattern, and that these patterns could be explained by the presence of  genes that controlled the inheritance of each trait. He also discovered that these factors could be dominant or recessive, and that the combination of these factors determined the phenotype (observable characteristics) of the organism. These discoveries formed the basis of Mendel's laws of inheritance, which are considered to be the foundation of the field of genetics.

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1. The carrying capacity for a population of deer in a forest is 300 individuals.

Which of the following is true?

A population of 300 deer will remain at about 300


A population of 100 deer will remain at about 100


A population of 500 deer will continue to grow exponentially


A population 300 deer will run out of resources and crash

The organisms found in a coral reef habitat include clownfish, seahorses, and sea grass.

2. Which of the following terms best describes these organisms?


community


biome


species


population

3.Which of these is an abiotic factor in a tundra ecosystem?


amount of sunlight


trophic levels


species richness


vegetation

Answers

Answer:

1. A population of 300 deer will remain at about 300

2. community

3. amount of sunlight

Explanation:

1. Carrying capacity is defined as the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other resources available. Therefore if a population has reached its carrying capacity, it will most likely remain at that size.

2. A community is defined as all of the populations of different species that live in the same area and interact with one another. Clownfish, seahorses, and sea grass are all different species living in an area together and interacting with each other. This example does not show a population, nor a species, nor biome, since a population is a group of organisms of the same species, and a biome is a distinct biological community that has formed in reponse to a shared physical climate.

3. Abiotic factors are non-living factors which affect an ecosystem.

If all of the stratospheric ozone suddenly disappeared, ________. A) plants would flourish
B) there would be a dramatic decrease in skin cancers
C) most life on Earth would cease to exist because of the amount of UV radiation penetrating the atmosphere
D) insects would be the only organisms to survive
E) Earth's surface would warm considerably

Answers

Answer:C

Explanation:

if anyone could complete this timeline in order, left to right, that'd be much appreciated :)

Answers

Explanation:

if anyone could complete this timeline in order, left to right, that'd be much appreciated :)

hope it is helpful to you

I’m afraid the timeline was forgotten, but no matter it is the thought that counts right!

I wanted to pop on to say, I hope you all have an amazing day, and found something to make you smile today! Make sure to take mental health breaks!

1. The South thought that it could win the war because a. it had skilled military men and could fight a defensive. b. Great Britain was on its side. c. cold weather in the North would make military training difficult. d. they could arm slaves and send them into battle first.

Answers

Answer: The answer is D.they could arm slaves and send them into battle first.

Explanation: This is the right answer because if you really think and read then this answer will make more sense

Thank you!!!  

PLEASE GIVE CREDIT IF YOU USE MY IDEA (Meaning use this answer)

Position A represents the position of the sun at another time of day during month Z. What is the time of day when the sun is at position?

Answers

Answer:

Position of the Sun. On Monday, September 16, 2019 at 02:30:00 UTC the Sun is at its zenith at Latitude: 2° 48' North, Longitude: 141° 16' East. The ground speed is currently 463.40 meters/second, 1668.2 kilometres/hour, 1036.6 miles/hour or 900.8 nautical miles/hour (knots).

Explanation:

The time of the day is 1 p.m when sun is at position A.

What is the distance between earth and sun?

As noted earlier, Earth's average distance to the Sun is about 93 million miles (150 million kilometers) from the Sun.

Position of the Sun. On Monday, September 16, 2019 at 02:30:00 UTC the Sun is at its zenith at Latitude: 2° 48' North, Longitude: 141° 16' East. The ground speed is currently 463.40 meters/second, 1668.2 kilometres/hour, 1036.6 miles/hour or 900.8 nautical miles/hour.

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Which situation can be identified by a biodiversity study of an area?
© A. A currently undetected invasive species will invade the ecosystem.
• B.
The decline of a shrub species is caused by an increase in an herbivore population.
O C. A flood is likely to hit the area very soon.
• D.
The ecosystem will expand its geographical range in the next 50 years.
O E.
An animal species is experiencing altered reproductive function.

Answers

Answer:

d

Explanation:

Answer:

D is WRONG

Explanation:

The correct answer is B

all pigments in the chloroplast can absorb sunlight and can participate directly in photosynthesis. What is your opinion about this statement

Answers

Answer:

One very important chlorophyll is chlorophyll a. All photosynthetic organisms (except a few groups of bacteria) have this as their main photosynthetic pigment. It is important because only it can participate directly in the light reactions, which convert solar energy to chemical energy.

Explanation:

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What happens when the livestock
grazing on rangelands remove ALL or
MOST of the grass cover?
A. it depends on the species of grass
B. nothing - the grass just grows back
C. soil erosion from wind and water occurs much quicker
D. the less rain can reach the soil

Answers

Answer:

C

Explanation:

soil erosion from wind and water occurs much quicker

Are these correct? And can you finish them?

Answers

Answer: Yes and here are the rest in order: Ozone layer, oxygen, nitrogen, water, ice, planet, and moon

Explanation:

Answer: Seems good

Explanation: Ozone layer, Oxygen and Nitrogen, Water, Ice, Planet, Moon

Where does the light reaction happens in plant?

Answers

The light reactions of plants are the photochemical reactions that take place in the thylakoid membrane of chloroplasts and convert light energy into chemical energy in the form of ATP and NADPH.

Light reactions in plants occur in the thylakoid membranes of organelles referred to as chloroplasts. The light processes are mostly controlled by photosystems, sizable complexes of proteins and pigments (light-absorbing molecules) that are designed to capture light. The light reactions processes include the plants division of water into oxygen, protons, and electrons, and take place in the chloroplast thylakoid membrane. The light reactions occur in the chloroplast thylakoid membrane and involve the splitting of water into oxygen, plants,protons and electrons.

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true or false Two genes that are separated by 10 map units show a recombination percentage of 10%.

Answers

Recombination rates for two genes separated buy 10 map units are 10%. True—1% of two genes recombining is represented by one map unit.

How do genes differ from DNA?

Your DNA is what builds and keeps up your human structure. Genes are parts in your DNA that are responsible for your unique physical characteristics.

What are genes, and what different kinds are there?

A little DNA segment called a gene. Millions of little molecules known as bases make up DNA. A, C, T, & G are the four distinct chemical kinds. A gene is a sequence of DNA composed of an As, Cs, Ts, and Gs sequence. Every of your cells has around 20,000 of your genes due to how little they are.

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Help will give brainliest

Answers

Viking 1, Voyager 1, Apollo 11, Sputnik 1

How is it beneficial to living things[ humans, animals, plants, etc] and the environment?

Answers

Answer:

ost plants and animals live in areas with very specific climate conditions, such as temperature and rainfall patterns, that enable them to thrive. Any change in the climate of an area can affect the plants and animals living there, as well as the makeup of the entire ecosystem. Some species are already responding to a warmer climate by moving to cooler locations. For example, some North American animals and plants are moving farther north or to higher elevations to find suitable places to live. Climate change also alters the life cycles of plants and animals. For example, as temperatures get warmer, many plants are starting to grow and bloom earlier in the spring and survive longer into the fall. Some animals are waking from hibernation sooner or migrating at different times, too.

Explanation:

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What is the role of carbon dioxide exchange with the ocean?

Answers

The role of carbon dioxide exchange with the ocean is A lot of the carbon dioxide that is released when fossil fuels are burned is taken up by the ocean.

Ocean acidification is the process by which this additional carbon dioxide is lowering the pH of the ocean.

The carbon cycle is significantly influenced by human activities. Changes in land use, the burning of fossil fuels, and the use of limestone in concrete all contribute significantly to the emission of carbon into the atmosphere. Marine organisms, such as corals, Dungeness crabs, and snails, are unable to construct their shells and skeletons due to ocean acidification.

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Enzyme A catalyzes a cellular reaction found in a wide range of species. The table shows data collected on the turnover numbers of Enzyme A purified from two of these species. In both cases, the same conditions were used to measure turnover numbers. Which statement is consistent with these data

Answers

ΔG for the two reactions is the same, but the energy of activation for the reaction catalyzed by the mollusk enzyme is lower than the energy of activation for the reaction catalyzed by the bacterial enzyme.

Enzymes are proteins that act as biological catalysts by hastening chemical reactions. Substrates are molecules that enzymes may interact with, and the enzyme converts the substrates into other compounds known as products.

An enzyme is a substance that works as a catalyst in living organisms, controlling the pace at which chemical reactions occur while remaining unaffected. Enzymes play a vital role in decreasing a reaction's activation energy—the amount of energy required for the reaction to begin. Enzymes function by attaching to reactant molecules and keeping them in place so that chemical bond-breaking and bond-formation activities may occur more easily.

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When a skydiver jumps out of an airplane, there are two forces acting on
her: gravity and air resistance. After falling for a few seconds the forces
due to gravity and air resistance balance each other. Once the two forces
are balanced, what type of motion will the skydiver have?

Answers

Answer:

The skydiver will stop accelerating, and will travel at a constant speed in one constant direction.

if an st elevation myocardial infarction converts to a non-ST elevation myocardial infarction in the course of thrombolytic therapy, how is it coded

Answers

STEMI that converts to a NSTEMI in the course of thrombolytic therapy is coded as an NSTEMI using the I21.x code. If thrombolytic therapy was administered, this should be documented separately using an appropriate code.

If an ST elevation myocardial infarction (STEMI) converts to a non-ST elevation myocardial infarction (NSTEMI) during thrombolytic therapy, it is coded as an NSTEMI. The code used to identify myocardial infarction is I21.x, and the fourth and fifth digits indicate the type of myocardial infarction. For STEMI, the fourth and fifth digits are 0, indicating a STEMI. For NSTEMI, the fourth and fifth digits are 1, indicating a NSTEMI.

The conversion of a STEMI to a NSTEMI can occur when thrombolytic therapy is successful in opening a blocked artery. When this occurs, the patient’s condition improves and the ST elevation disappears from the electrocardiogram (ECG), indicating that the myocardial infarction is now a NSTEMI.

When coding for a NSTEMI, it is important to note that the NSTEMI code does not indicate the presence of thrombolytic therapy. The code is simply used to indicate that the patient has experienced an NSTEMI. If the patient received thrombolytic therapy, this should be documented separately using an appropriate code, such as ICD-10-CM code Z94.30 (thrombolytic therapy).

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