In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people—those who exercise every day for an hour and those who don’t exercise at all.

Answers

Answer 1

............................ In this case, the statement that people who exercise for an hoour may have lower cholesterol level is HYPOTHESIS. ....................... The cholesterol level would be the DEPENDENT VARIABLE.

An hypothesis refer to a proposed statement based on prior knowledge, which is used as a starting point in scientific experimentation.

In scientific experiments, there are always two variables, independent and the dependent variable. The independent variable is the variable that is changed or controlled in a scientific experiment in order to determine its effects on the dependent variable.


Related Questions

what kind of diagonosis is neuroblastoma?​

Answers

Answer:

Neuroblastoma is a cancer that develops from immature nerve cells.

Explanation:

Neuroblastoma often spreads to the bone marrow (the soft inner parts of certain bones)

hope this helps

Answer:

Neuroblastoma often spreads to the bone marrow (the soft inner parts of certain bones). If blood or urine levels of catecholamines are increased,

Explanation:

then finding cancer cells in a bone marrow sample is enough to diagnose neuroblastoma (without getting a biopsy of the main tumor

During handwashing, how do you turn off the water?

Answers

Answer:

Well you can use your elbow to turn it off.

Answer:

I use my hands

Explanation:

I turn the water on, then rinse my hands, get the soap, rinse them off, and them turn the water off and dry.

In some symbiotic relationships,
one organism may benefit. What
happens to the other organism?
A. The other organism benefits as well.
B. The organism is either helped or harmed.
C. The organism is harmed, then does harm to
the other organism.

Answers

B. The organisms can be helped or harmed. If it is helped then it is called mutualism, because both of the organisms mutually help each other (I.e clownfish and sea anemone). The symbiosis can be harmful to the host as well and this is called parasitism(i.e dogs and fleas). There is also a third term for symbiosis which is commensalism which benefits the non host but doesn’t effect the host (I.e barnacles on whales)

Calculate the percentage decrease in the number of deaths due to measles worldwide from 1990 to 2011

Answers

Answer:

to find percentage decrease you need to do:

[tex]\frac{final number - intial number}{initial number}[/tex] × 100 = percentage decrease

final number equals the number of measle deaths in 2011

initial number is deaths in 1990

hope that helps

Hug
Science
7. Fill in the blanks with the word from
the plant pot below
Plants can only grow
under certain​

Answers

The question is incomplete the correct question is attached in the form of the image:

Answer:

Plants can only grow under certain conditions.1. condition. They need 2. Water, air, light, and warmth. If a 3. plant does not have these things will slowly die. A 4. healthy plant has green leaves and stands up strong. A plant that has been deprived of 5. light will lose its leaves. A plant that has been deprived of 6. nutrients will turn yellow, thin and, 7. spindly. To stay healthy a plant needs to take water and nutrients from the 8. soil. Plants take 9. carbon 10. dioxide from the air and use it with water and 11. light to make ts food.

Plants can only grow under certain​ conditions, which include:

waterairlightwarmth

What are environmental conditions?

Environmental conditions can be defined as different circumstances in which an organism can survive and reproduce.

Organisms are adapted to survive to different environmental conditions (e.g. temperature conditions).

An organism that can live in a wide range of environmental conditions is a eurytopic organism.

In conclusion, plants can only grow under certain​ conditions.

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What percent of the energy animals get from
food is lost as bodily waste?

Answers

Answer:

roughly 90 percent of stored energy is lost as waste heat each time

Answer:

In general, roughly 90 percent of stored energy is lost as waste heat each time you go up the food chain by one trophic level. In other words, animals, on average, convert just 10 percent of the energy available from the organisms they eat into stored chemical energy.

Explanation:

is Primary Hyperaldosteronism cancer?

Answers

Primary aldosteronism is a group of disorders, originally described by JW Conn, in which there is a non-suppressible secretion of aldosterone and hypertension. Aldosterone is a salt-retaining hormone synthesized by the adrenal gland that is regulated by multiple factors, with the renin-angiotensin system and serum potassium being the major factors. Additional minor regulators include adrenocorticotropic hormone (ACTH), atrial natriuretic factor, and dopamine

Primary hyperaldosteronism can be caused by either hyperactivity in one adrenal gland (unilateral disease) or both (bilateral disease). Unilateral disease is usually caused by an aldosterone producing adenoma (benign tumor) and less commonly by adrenal cancer or hyperplasia (when the whole gland is hyperactive). Bilateral disease is usually caused by bilateral hyperplasia (when both glands are hyperactive). There are rare genetic syndromes like familial hyperaldosteronism type I and II which may cause both glands to be hyperactive.

explain why traits that aren’t present in either parent could show up in the offspring or in future generations of the offspring.

Answers

It can show because it can be a recessive trait that can be showed up in ones genes. Recessive traits can be less present in parent parents but if both parents have similar recessive traits it can be able to show up in offspring and future offspring. Also it can show in offsprings because of earlier generations. The parents might not have these traits but grandparents are great grandparents might have the traits.

How could a scientist use the scientific method to learn more about the Cretaceous era?

Answers

First, it is necessary that this scientist decide on what point of the Cretaceous period he wants to study. Among several points he may want to study the evolution of microorganisms of that time, the life of a dinosaur species, or the evolution of dinosaurs, the flora that was established during this period, among others. This is the phase of the scientific method called Observation.

After that, he must enter the phase called "Elaboration of hypotheses" where he will raise questions about the point he decided to study. "How many flower species existed in that period?", "How many of these flowers can we observe today?" among others.

After that, he will enter the phase called "Experimentation", where he will establish a type of experiment and all the experimental factors and variables that will allow the hypotheses to be answered.

After the experiment he will collect the data that will be analyzed and that will give results that will answer the hypotheses previously established. This is the phase called "Analysis of the results".

At that moment, he will be able to reach the last phase of the scientific method, the phase called "conclusion", where he will show the conclusions that the experiment allowed to be established.

The Cretaceous period was a prehistoric period that took place between about 140 and 60 million years ago. If a scientist wanted to use the scientific method to learn more about this time, he should implement the following steps:

Identify an unresolved issue or problem that you would like to address. Make a hypothesis that raises answers to these questions or problems. Carry out a series of investigations and experiments dedicated to verifying the hypotheses raised. Finally, having verified the hypotheses, propose a law or rule for the investigated questions.

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If blood flow in the capillaries of the alevoli was reduced what would be the effect?

Answers

Explanation:

Intrinsic diffusion barriers between alveoli and capillaries can result in hypoxemia.

Mark me as the Brainleist plz..

Answer:

less o2

Explanation:

Which of the following groups is a community?
O A. All of the white-tailed deer living in a forest ecosystem
B. All of the living and nonliving things that interact within a forest
ecosystem
c. All of the insects living in a forest ecosystem
D. All of the living things that interact within a forest ecosystem

Answers

Answer:

D. All of the living things that interact within a forest ecosystem

Explanation:

A biological community consists of all biotic(living) organisms within an ecosystem.

during photosynthesis, the energy fro. Sunlight is used to split water molecule. What happens to the hydrogen ions that are split from water molecule

Answers

Answer:

Hydrogen ions are transported across the thylakoid membrane.  Hydrogen ions diffuse through a protein channel.

Explanation:

The three major processes in the water cycle are salinity, evaporation, and precipitation.

Answers

Answer:

Hey there!

That is false. The three stages in the water cycle are evaporation, condensation, and precipitation.

Hope this helps :)

Which of the following best describes the behavior of nonconservative elements in seawater?
A. Nonconservative elements are reactive in seawater and have a long residence time.
B. Nonconservative elements are reactive in seawater and have a short residence time.
C. Nonconservative elements are non-reactive in seawater and have a short residence time.
D. Nonconservative elements are non-reactive in seawater and have a long residence time.

Answers

Answer: Option C.

Nonconservative elements are non-reactive in seawater and have a short residence time.

Explanation:

Non conservative elements are elements that enter the sea water and have little concentrations in the ocean and show spartial variationns. These elements have short residence time I .e short replacement time and they are non reactive .Constituents such as phosphate, nitrate, and other nutrients, and dissolved oxygen, carbon dioxide, etc. are non-conservative because their concentrations are later changed by chemical reaction in the sea.

Un jardinero cruzó dos plantas de flores rosadas, con la esperanza de obtener plantas con flores del mismo color. Su sorpresa fue encontrar que, en la descendencia, aparecían flores rojas, rosadas y blancas en la proporción 1:2:1. Pregunta: a) ¿En qué se diferencia la herencia del color de estas flores y la de los guisantes? b) Indica el genotipo de las plantas del cruzamiento descrito.

Answers

Answer:

Este es un ejemplo de dominancia incompleta. Es una ocurrencia genética que ocurre cuando un gen dominante no expresa su manifestación completa en el alelo recesivo en un alelo dominante heterocigoto.

Por lo tanto, ambos rasgos se manifiestan, lo que resulta en la combinación de los dos alelos para los colores (blanco y rojo). Se dice que el alelo rojo dominante exhibe un dominio parcial sobre el alelo blanco recesivo, y esto da como resultado el alelo completamente rosado.

De acuerdo con la ley mendeliana, las dos flores rojas son heterocigóticas. Por lo tanto, las flores rojas heterocigóticas dominantes deben ser R. El alelo blanco es recesivo (rr) enmascarado por el rojo R,

Sin embargo, cuando se cruzan los dos alelos heterocigotos rojos:

Los fenotipos están en forma de

RR, (1) rojo Rr Rr (2) rosa rr (1) Blanco.

Esto ocurre porque el alelo rojo dominante no era total / completamente dominante en el alelo recesivo blanco en cada uno, lo que da como resultado un alelo rosa (el tercer fenotipo)

This is an example of incomplete dominance.It is a genetic occurrence  which occurs when a dominant gene does not express it full manifestation on the recessive allele in an heterozygote dominant allele.

Therefore,both traits are manifested which results in the blend of the two allele for colors(white and red).The dominant red allele is said to exhibit partial dominance over the recessive white allele.And this results in the entirely pink allele.

Based on Mendelian law the  two red flowers are  heterozygotes .Therefore, Red heterozygote dominant flowers should beRr.The white allele is recessive(rr) masked by the R-red,

However,when the two red heterozygote alleles are crossed:

The phenotypes are in the form of  

RR,(1) red  Rr Rr(2) pink  rr(1)White.

This occurs because, the dominant red allele was not fully/completely  dominant on the  white recessive allele in each,which results in pink allele(The third phenotype)

Explanation:

The branch of science which deals with living beings is called biology.

The language of the question is different so it is difficult to answer it.

According to the data given in the question, they are discussing incomplete dominance because the ratio is 1:2:1.

The cross in which the dominant parent is not able to show its character and does not able to suppress the recessive gene. In this case, the plants show the character of somewhere in between both of the cases.

Therefore, they get the ratio of 1:2:1 which indicates the phenotype of red: pink: white.

Hence, the correct answer is incomplete dominance.

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Give the names of two co- enzymes that take part in the cellular respiration.

Answers

Answer:

Explanation:

Two of the most important and widespread vitamin-derived coenzymes are nicotinamide adenine dinucleotide (NAD) and coenzyme A. ... When NAD loses an electron, the low energy coenzyme called NAD+ is formed. When NAD gains an electron, a high-energy coenzyme called NADH is formed.

If a plant has a high concentration of minerals inside its root cells, but does not have enough energy for active transport, what could happen to the minerals?

Answers

Answer:

The minerals will not be move or transported to other part of the plants because active transport require energy.

Explanation:

Active transport is a process where molecules and ions are move against a concentration gradient by using energy.

This process require energy, for ions or molecules of minerals to be taken up by plants, it is first moved to the root hairs where they are in high concentration against in dilute concentration on soil Active Transport then occur in the roots where it is taken up to the plants with the use of energy.

If there is not enough energy, active transport will not occur and the minerals will remain in the root hair and will not be move to other part of the plant.

Cells have different membrane carbohydrates if they do different ______.

Answers

Jobs.... they do different jobs.

What other adaptation could have helped koalas as they evolved from land-dwellers to tree-dwellers?

Answers

Answer:

I believe it is

fur color that closely matches the eucalyptus bark color

or B

Explanation:

My reasoning is that, if they evolved from land-dwellers to tree-dwellers, they will have almost no need for longer legs for running, as they only need strong legs and arms for climbing, not running.

The ability to communicate better doesn't really mean anything, as they are now all closer or further away, since they are all in trees now. This doesn't mean that they necessarily need to communicate better.

The ability to have several offspring at one time could be the answer, but isn't really necessary.

Predators would hunt for the koalas in the trees now, so to hide, they would need to go inside the tree trunk or camouflage themselves, which most creatures do by blending into their surroundings or changing skin color over time.

I got this question on Edge 2021 biology finals so...

what is traslocation​

Answers

Answer:

The exchange of chromosome segment between non-homologous chromosomes is called translocation.

It is of two types:

Reciprocal translocation

There is an exchange of chromosome segments between two non- homologous chromosomes in reciprocal translocation.

Non- reciprocal translocation

A part of chromosome is translocated from one non-homologous chromosomes to other so that one chromosome becomes deficient and another non-homologous chromosome gains the piece of chromosome and becomes long.

Hope this helps...

Good luck on your assignment..

They need
air, light and
warmth.

Answers

Explanation:

Yeast is the answer. It can be any type of microbe

HELP !!!!

Which of the following statements is true of meiosis?

Answers

Answer:

The answer is option D.

it divides one diploid cell into four haploid cells

Hope this helps you

How is sexual orientation different from gender?

Answers

Answer:

sexual orientation is how you feel and what genders you are attracted to sexually (straight, bisexual, lesbian, etc) gender is what you were born as or who you identify as.

Explanation:

Which part of the brain is responsible for coordination and balance?
Spinal cord
1
Cerebrum
2
Cerebellum
3
Brainstem
4

Answers

Answer:

The answer is cerebellum.

Explanation:

As the function of cerebellum are,

To maintain equlibrium and control the posture of a body.It makes body movements smooth , steady and co- ordinated.It also coordinate and regulates the contraction of skeletal muscles.

Hope it helps...


Which amino acid chain will be formed by the codons shown below?
AAG AGA UGU
Messenger
Second base in codon
RNA Codons U
C
G
UUU
Phe
JUCU UAU
UUC
JUGU
UCC UAC TYT
UGC Су.
с
UUA
UUG
UAG StolUGG TPG
CUU
CCU CAU CGU
CUC
ССС CAC
His
CGC
Lou Pro
CUA CCA
Ical
CGA
Ang
CUG
Gin
CCG
CAG CGG
AUU ACU TAAU AGU
As
AUCH ACC
Ser
AGC
AAC
А
Thr
AUA IACA IAAA
IMA Lys
AGA
AUGACG
Ang
AAG
AGO
GUU IGCUS TGAU GGU
GUC GCC GAC
Asp
GGC
G
Val Ala
Gy
GUA GCA GAA GGA
GUG
IGCG
Glu
GGG
OGAN
С
Third base in codon
GAG
O A. Asn-Ser-Cys
O B. Lys-Ser-Cys
10
O C. Asn-Arg-Cys
O D. Lys-Arg-Cys

Answers

Answer:

the answer is d. lys-arg-cys

Eukaryotic cells of humans and animals possess a selective advantage in the fact that
they are capable of both aerobic and anaerobic cellular respiration.
Consider the following statements:
1) Anaerobic respiration allows glycolysis to continue
II) Anaerobic respiration generates more ATP per molecule of glucose
III) Anaerobic respiration regenerates NAD+
IV) Anaerobic respiration prevents the build-up of excess oxygen in the mitochondria
V) Anaerobic respiration results in the removal of a molecule of carbon dioxide per molecule of pyruvate.
Which of the statements best reflects this selective advantage?

A) I and II
B) I and III
C) II and IV
D) I, III, and V
E) II, III, and IV

Answers

D. I,III and V

This is correct because all of the following occur during anaerobic respiration. (I took AP Bio :) )

What might be the correlation between the clarity of the lake water and the occurrence of the full body plate trait? What might you conclude about the clarity of the water from 1950 to 1980 based on this correlation?

Answers

Answer:

The clarity of the lake water isn’t specified so assuming the clarity improved and other predatorial fish were able to target stickleback fish more easily the full body plating had to come into play to make it more difficult for them to be preyed upon and to give them a better chance at escape.

Explanation:

The clarity of the lake water though not specified in this context. The full

body plate will help the stickleback fish to escape from its predators.

Water clarity is defined as the amount of light which is able to penetrate into

water bodies thereby making it easier for animals in it to see and hunt

properly for their food.

The improvement in water clarity will give the predatorial fish  an advantage

to easily hunt stickleback fish. The  full body plate trait will therefore give it a

form of adaptation to enable ity escape from other predators in the water

body.

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an error occurs when the DNA of a cell is copied. However, the cell does not divide after the error is detected. which statement best describes the cell cycle for this cell?

a-an error during the G1 phase is corrected during G2 phase

b-an error during the s phase is corrected during G2 phase

c-an error during the G1 phase is corrected during the s phase

d-an error during the s phases is corrected during mitosis

Answers

Answer:

An error during the S phase is corrected during the G2 phase.

Explanation:

Why the S Phase Is Important

DNA synthesis must occur rapidly, as the unpaired base pairs of the DNA strand during replication are vulnerable to harmful mutagens, which can lead to genetic abnormalities, cell disease or even cell death

ONLY ONE ANSWER!!

Which is one effect that would most likely result from a tsunami?
death
drought
extinction
genetic change

Answers

Death - A tsunami involves an ocean which wouldn’t cause a drought because the mass of water extinction the tsunami as a whole wouldn’t destroy every living thing on earth but cause a large death toll genetic change wouldn’t occur

One of the consequences of tsunami happening in a place would be death and destruction of biodiversity.

What is a tsunami?

A tsunami is a natural disaster caused by multiple waves in water bodies that send large volumes of water inland.

The sudden displacement of water with a large force destroys lives and properties on land, especially the coastal lands.

Thus, one of the surest effects of tsunamis is death.

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Determine whether or not a rose is alive and, if not, what characteristic of life is
it missing?
A. No, it is missing the characteristic of movement.
B. No, it is missing the characteristic of being made of cells.
C. Yes
D. No, it is missing the characteristic of responding to stimuli.

Answers

Answer:

d

Explanation:

NO, the rose is missing the characteristic of responding to stimuli, so it's not alive.

What are the characteristics of life?

All living things share a number of essential traits or abilities, such as order, environmental sensitivity or responsiveness, reproduction, growth and development, regulation, homeostasis, and energy processing. These qualities help to define life.

Reproduction: In order to be regarded as alive, an object must be able to reproduce and produce children.HeredityHeredity is the capacity of parents to transmit genetic material (DNA) to their children. This can take the shape of genotypic qualities as well as phenotypic traits, which describe how a living thing appears on the exterior.

Cellular OrganizationAll living organisms are organized cellularly and are made up of one or more cells.

Growth and DevelopmentAll living things grow and develop as they age, becoming more physically and psychologically mature.

Adaptation Through EvolutionEvery living thing has undergone some level of evolution, and they all continue to do so in order to adapt to a constantly changing environment.

Response to StimuliLiving things react to environmental stimuli.

Homeostasis A living thing's capacity to maintain steady internal conditions, such as blood pressure, body temperature (thermoregulation), and water balance inside cells, is known as homeostasis.

MetabolismAn organism must use chemical processes to break down and/or use materials from the environment in order to maintain its function, which is known as metabolism.

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