Why do animal cells not need central vacuoles?
A: Animal cells are round.
B:Animal cells have cell walls.
C:Animals do not produce their own food
D:bodies have skeletons.

Answers

Answer 1

Answer:

B:animal cells have cell walls


Related Questions

Explain the reciprocal relationship between human society and limiting factors

Answers

Answer:

humans try to modify environment factors to suit their needs. Limiting factors can be controlled in a specific area however, we can't control larger area. Like water or energy.

which of the following statement about carbon dixoide is not true?

a.) increased carbon dioxide in the atmosphere increases the green house effect

b.) carbon dioxide is a greenhouse gas

c.) atmospheric carbon dioxide levels have slowly declined over the last 50 years

d.) burning fossil fuels can increase carbon dioxide levels in the atmosphere

Answers

Answer:

c is not true

Explanation:

c is correct answer because carbon dioxide have been increased not decreased

Do leaves have other than. Green colour also have chlorophyll​

Answers

Yes, leaves that are of any other colors than green also have chlorophyll. The green colour of chlorophyll is just hidden beneath other pigments of the leaf.

What is the best definition for the term 'peer review?'
o
A. When you are given of review of how well you work by your coworkers.
B. When research is scrutinized and re-tested by others who are experts in the same area.
C. When people of the same age read each other's work.
D. When research is published to the general public for them to form opinions on it.
Reset Selection

Answers

A. When you are given of review of how well you by your co workers

The diagram below shows a light ray striking Medium A and Medium B at the same angle. (4 points)

A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.

Which statement is correct?
The speed of the light ray is the same in air and Medium A.

The speed of the light ray is the same in air and Medium B.

Medium A and Medium B have different densities because light refracts at different angles.

Medium A and Medium B have the same density because the light ray strikes both at the same angle.

Answers

Answer:

A the speed of the light ray is the same in air and medium

If your body lacks enzymes that break down carbohydrates, it would be unable to get __A__ for energy production. If you lacked the enzyme to digest proteins, you may not absorb enough __B__.

Answers

Answer:

Glucose and amino acid.

Explanation:

If your body lacks enzymes that break down carbohydrates, it would be unable to get glucose for energy production while on the other hand, if you lacked the enzyme to digest proteins, you may not absorb enough amino acid that our body needs for the formation of muscles. Enzymes play a great role in the breakdown of macro food particles into simpler molecules so that it can be absorbed by the cells.

Answer:

A: Sugar Molecules

B: Amino Acids

Hope this helps!

Explanation:

the energy to turn raw materials into food is powered by _____ and occurs in the plants ____

Answers

Answer:

Photosynthesis, chloroplast

Explanation:

if the velocity of a vehicle starting from rest reaches 5m/2s in 2seconds, is the velocity of the vehicle uniform ?explain.​

Answers

Explanation:

Avg speed × total times = total distance

20×25=500

Since acceleration in the 1st interval is same as deceleration in the 3rd interval and deceleration is from the same velocity achieved after acceleration, t

1

=t

3

s

1

=

2

1

×5t

1

2

s

2

=(5t

1

)t

2

s

3

=(5t

1

)×t

3

2

1

×5×t

1

2

=(5t

1

)×t

1

2

1

×5×t

1

2

s

1

+s

2

+s

3

=5t

1

t

2

+5t

1

2

⇒5t

1

2

+5t

1

t

2

=500−−−−1

2t

1

+t

2

=25−−−−2

Solving (1 ) and (2) ⇒t

1

=5,t

2

=15sec

In order for natural selection to occur, organisms must (select all that apply) Check All That Apply have variation that can be passed from one generation to the next. have variation that can be passed from one generation to the next. have differential reproductive success. have differential reproductive success. survive longer than another organism. survive longer than another organism. compete for resources. compete for resources. have adaptations to their environment. have adaptations to their environment.

Answers

Answer:

have variation that can be passed from one generation to the nextsurvive longer than another organismhave adaptations to their environment. have differential reproductive success.

Explanation:

Naturla selection is the survival and reproduction of individuals due to different phenotypes. The naturla selection represents a mechanism of evolution and changes in traits of species.

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Natural Selection is a mechanism of evolution that occurs when there is a heritable variation for a trait and individuals with one version of the trait have greater reproductive success than do individuals with a different version of the trait.

In order for natural selection to occur, three conditions must be met:

There must be variation for the particular trait within a population.The variation must be inheritableIndividuals with one version of the trait must produce more offspring than those with a different version of the trait.

Thus,

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Learn more:

https://brainly.com/question/15577096

The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.

Answers

Answer:

Americans chemical society

Help me please picture included

Answers

Answer:

umm I'm sorry but the picture is not coming like I mn its blank

Can someone please help me!

Answers

The answer is C.

It is the site of gas exchange in the lungs.

Gas exchange occurs only in alveoli. Alveoli are made of thin-walled parenchymal cells, typically one-cell thick, that look like tiny bubbles within the sacs. Alveoli are in direct contact with capillaries (one-cell thick) of the circulatory system.

define the term (1)semi-permeable membrane (2) osmosis tell the answer i will mark u as brainlist​

Answers

Answer:

a)the outermost part of an animal cell that selectively allows things to pass through and come out.

b) the passing of water molecules from higher conc. to lower conc.

Answer:

(a) Semi-permeable membrane:

A semipermeable membrane is a membrane that only allows the movement of solvent molecules but restricts the movement of solute particles across the membrane.

(b) Osmosis:

The process of movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane is called osmosis.

When two nearby concentrations are different, materials will tend to spread out to equalize the concentration. For example, if you put a drop of food colouring in some water it will gradually spread through the whole water.

What goes on during interphase?

Answers

Explanation:

During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.

Explanation:

During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well, resulting in two daughter cells

Explain how homologous and the fossil records support evolution.
Thanks so much!!!

Answers

Answer:

Los fósiles, una prueba de la evolucion. El estudio de los fósiles nos da una idea muy directa de los cambios que sufrieron las especies al transformarse unas en otras; existen muchas series de fósiles de plantas y animales que nos permiten reconstruir cómo se fueron adaptando a las cambiantes

Explanation:

Answer:

homologous: have identical position, value, or structure

Fossils: In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms.

 

Explanation:

The evolution theory is supported by multiple sorts of evidence: homologous structures show common ancestry, whereas similar selective pressure will manufacture similar variations. analogous structures (beneficial features).

In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms. This supports Darwin's organic process theory, whereby straightforward life forms {progressively|increasingly|more and additional} evolved into more advanced. Proof of adolescence forms comes from fossils.

. Most of the matter in the universe: A. Exists within stars B. Is made when planets are formed C. Is unknown, called dark matter and energy D. Is blue-shifted

Answers

Answer:

B

Explanation:

is made when planet are formed

PLEASE HELP Calculate the volume of the block using the formula

Answers

Answer:

21.553125

Explanation:

You can round to whatever you feel, but this is the answer when you multiply 2.75 x 2.75 x 2.85

:D

Which is the difference between an antibiotic and an antiviral?

Answers

Answer:

There are no options in this question, the options are as follows:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

B. Antibiotics treat the symptoms, and antivirals destroy the causing organism.

C. Antibiotics are in liquid form, and antivirals are in mist form.

D. Antibiotics treat patients who have Staphylococcus, and antivirals treat patients who have the flu.

The answer is D

Explanation:

Specific drugs are used to curb infection or diseases caused by specific pathogens. An infection can be caused by either bacteria, virus or fungi. Considering their different mechanism of infection, viral infections are treated with the use of ANTIVIRAL DRUGS while bacterial infections are treated with the use of ANTIBIOTICS.

According to this question, staphylococcus is a bacterial genus and hence, patients with staphylococcus can be treated with antibiotics while flu is a viral disease, hence can only be treated with antivirals.

Answer:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

Explanation:

edg

Which of the following is an example of an adaptation?

A. Ducks swim near the shore by a picnic area, where food is always available.

B. A dog walks without pulling on its leash.

C. Wolves work together to catch prey.

D. Birds living near a highway learn not to fly away every time a car passes.

(Zoom the picture for better quality)

Answers

the answer should be D

Answer:

wolves work together to catch prey

What are the effects of global warming on the earth over time?

Answers

Effects that scientists had predicted in the past would result from global climate change are now occurring: loss of sea ice, accelerated sea level rise and longer, more intense heat waves.

1. Identify the taxa labeled A, B, C, and
Din the chart.
A.
B.
C.
D.

Answers

Answer:

A.Species

B.Genus

C.Phylum

D.Kingdom

Write down the functions of
1.microtubules
2.tripletsof microtubules

Answers

Answer:

Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility

Centrioles are cylindrical structures that are made up of protein tubes called microtubules. Specifically, nine groups of three microtubules, known as triplet microtubules, are linked together to make the walls of the cylinder.

Hope it helps :)

Answer:

Microtubules have several functions. For example, they provide the rigid, organized components of the cytoskeleton that give shape to many cells, and they are major components of cilia and flagella (cellular locomotory projections). They participate in the formation of the spindle during cell division (mitosis).

triplet microtubules are linked together to make the walls of the cylinder.

Explanation:

The 'genus species' name for the common house cat is Felis domesticus, and the genus species name for a mountain lion is Felis concolor. The modern system of classification categorizes house cats and mountain lions in

Answers

Answer:

two different animals are classified into the same family this means they would be classified in options are first the same Phylum but different class 2nd the same class but different special third the different Kingdom and the different Phylum forth the different class and different order

Do you agree or disagree that homologous chromosomes are found in gametes. Explain

Answers

Answer:

Disagree. Homologous chromosomes are pairs of similar chromosomes. Because gametes are haploid, they contain only one set of chromosomes. Thus, homologous chromosomes are not normally found in gametes.

Explanation:

A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?

plateau
syncline
strike-slip fault
fault-block mountai

Answers

The scientist observes strike slip fault feature when rock masses that have moved past each other in opposite horizontal directions.

Answer:

Strike slip fault

Explanation:

when it masses moved away against horizontal directions.

Which of the following statements is MOST accurate?
a. Most people who engage in gambling activities become addicted to it
and end up taking bankruptcy because they cannot pay their bills.
b. People at lower income levels lower use a larger percentage of their
income to buy lottery and scratch tickets than people at higher levels of
income.
c. Gambling is a moral issue, with little or no economic or financial impact
on individuals or society.
d. Casinos only have a positive impact on communities because they create
jobs and generate wealth.

Answers

Answer:

C

Explanation:

Which of the following can be inferred from the genetic code?

A.All organisms have a common biochemical evolutionary origin.

B.Organisms can live without genetic code.

C.Four nucleotides.

D.Four nucleosides.

Answers

Answer:

A. All organisms have a common biochemical evolutionary origin.

Explanation:

Genetic code is the biological mechanism by which the DNA in our body is used to synthesize protein needed for growth and development. The genetic code comprises of all the possible 64 codons i.e. a group of three nucleotides that encode an amino acid.

One of the characteristics of the genetic code is that it is UNIVERSAL. This means that all known living organisms make use of the same genetic code and hence, this portrays that all living organisms share a common biochemical evolutionary origin.

The statements on the left are incorrect
Write the correct statement.
Incorrect statements
1. Breathing produces carbon
dioxide from glucose
2. Only animals carry out
respiration. If someone can help with this it’d be greatly appreciated

Answers

Answer:

Carbon dioxide creates oxygen so we can breathe and seperates it from glucose

All species and humans breathe fish have gills to breathe underwater so not just animals have respiration.

Explanation:

Can someone please help me!

Answers

Answer:

thats the 2 number point okay,plasma contains platelets ,ok


⚠️please help ASAP, this is a one of the last questions for a very important test I’m taking and I would like to make sure my answer is correct

What did sharks and
rays develop that
their ancestors did
not have?
A. lobes that were the beginnings of arms and legs
B. jaws that helped with catching prey
C. legs to be able to survive on land
D. amniotic eggs

Answers

Answer:

i believe its D, amniotic eggs.

Explanation:

Correct Answer is : D
Other Questions
PLS HELP! When rolling a single number cube, what are the odds, in simplest form, in favor of rolling a 4 or a 5? A. 1:1 B. 1:2 C. 1:3 D. 1:5 f(x) = 2x2 + 4x - 5g(x) = 6x3 2x2 + 3Find (f + g)(x). pleaseee help mee helpp meeee Travis and Andrea were divorced in 2017. Their only marital property consisted of a personal residence (fair market value of $400,000, cost of $200,000), and publicly traded stocks (fair market value of $800,000, cost basis of $500,000). Under the terms of the divorce agreement, Andrea received the personal residence and Travis received the stocks. In addition, Andrea was to receive $50,000 for eight years. I. If the $50,000 annual payments are to be made to Andrea or her estate (if she dies before the end of the eight years), the payments will qualify as alimony. II. Andrea has a taxable gain from an exchange of her one-half interest in the stocks for Travis' one-half interest in the house and cash. III. If Travis sells the stocks for $900,000, he must recognize a $400,000 gain. a.I, II, and III are true. b.Only III is true. c.Only I and II are true. d.Only I and III are true. Drag each tile to the correct box. Match each type of character with the correct description. antagonist static round flat opposes the protagonist arrowRight does not change over the course of a story arrowRight a one-dimensional character arrowRight a complex, well-developed character Find x on this triangle In the picture the exponent says 5/3 If there is a 65% chance you will make a free throw, what percent of thetime you will miss? * Cardinal Company manufactures vitamin capsules. For the month of June, Cardinal's encapsulating department had 18,000 tons in beginning inventory (with transferred-in costs of $4,400) and 81,000 tons completed inventory during the month. Further, the mixing department completed and transferred out 72,000 tons at a cost of $22,300 in June. Calculate unit cost for the transferred-in category. (Note: Round answer to two decimal places.) Ella estaba_________(oir) mi voz en el telephono. A trial balance is a(n) (list/balance/chart) of accounts and their balances at a point in time and is used to confirm that the sum of debit account balances equals the sum of account balances. Use one word for each blank. Find the length of the hypotenuse of a right angle triangle if remaining side are 3 cm and 4 cm. can someone help me out with this question??? Any other one I need to add??? Find the exact length of the curve. x=et+et, y=52t, 0t2 For a curve given by parametric equations x=f(t) and y=g(t), arc length is given by Suppose Siam Traders has the following results related to cash flows for 2020: Net Income of $7,200,000 Increase in Accounts Payable of $600,000 Increase in Accounts Receivable of $100,000 Decrease in Debt of $700,000 Depreciation Expenses of $2,000,000 Dividends Paid of $500,000 Decrease in Inventory of $1,000,000 Purchases of Property, Plant, & Equipment of $8,300,000Other Adjustments from Financing Activities of -$100,000Other Adjustments from Investing Activities of $400,000Other Adjustments from Operating Activities of -$200,000Requried:Create a statement of cash flows with amounts in thousands. Relate family and social behavior The total enclosed area is ____ square units. Round to the nearest tenths place (1 decimal place).Answer: 47.6Is this right? what do you mean by love? 1) Think about a trip or visit you went on with your school, either educational or for pleasure, long or short. Answer the following questions in note form.a) Where did you go, and why? b) How long were you away? c) Who was in the group? d) How did you get there? e What time of year was it? / What was the weather like? 2) Make notes, using time markers, of about five events which occurred on your trip. For example: Tues 6 a.m. - breakfast outdoors in freezing cold; teacher found cockroach in cornflakes; Sophie said she missed her cat and wanted to go home.