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

Hibernation is _______.

Answers

Answer:

PROCESS OF SLEEPING FOR MONTHS .

LIKE BEARS,BATS,ETC

Answer:

the condition or period of an animal or plant spending the Winter in a dormant state.

+10 POINTS! AND BRAINLIEST!


The number of chromosomes within each species of plant or animal:
A. is constant is
B. reduced in half with reproduction
C. is always 46
D. varies

Answers

Answer:

is always 46

Explanation:

46 is the correct answer

Answer:

the answer is a.

Explanation:

if you are talking about only within a specific species, then the number of chromosomes is supposed to stay constant within that species. however, chromosome disorders do exist, but they are relatively rare.

hope this helped!!

how many hearts does the octopus have ?​

Answers

Answer:

3

Explanation:

Answer:

Three hearts

Explanation:

One heart pumps blood throughout the body, while the other two pumps oxygen-rich blood through the gills.

OAmalOHopeO

explain what is meant by a ' reactant ' .​

Answers

Explanation:

A substance that enters into and is altered in the course of a chemical reaction.

hope are you understand

A thing that enter and goes out

How are photosynthesis and cellular respiration similar?
A. Both processes produce oxygen and glucose?
B. Both processes and release energy
C. Both processes involve energy-carrier molecules
D. Both processes produce oxygen

Answers

Answer:

The two processes are similar in that they both produce energy, albeit in two different forms. ... The win-win of the two processes is that they both provide each other with the necessary ingredients for the process to take place: glucose and oxygen for cellular respiration, carbon dioxide and water for photosynthesis.

What relationship will blood volume have on blood pressure?

Answers

Answer:

Answer:I HOPE THAT ABOVE INFORMATION WILL HELP YOU A LOT.

Answer:I HOPE THAT ABOVE INFORMATION WILL HELP YOU A LOT.

As blood volume decreases, pressure and flow decrease. As blood volume increases, pressure and flow increase. Under normal circumstances, blood volume varies little

2(8)
Data about CO2ce in the atmosphere and average global temperatures shows that
A. the CO2 concentration has been decreasing and the average global
temperature has been increasing
B. the CO26, concentration has been increasing and the average global
temperature has been decreasing
C. the CO2 concentration has been increasing and the average global
temperature has been increasing
D. there has been no change in either CO2 concentration or the average global
temperature

Answers

Explanation:

Option C is the correct answer.

What is the relationship between light intensity and ATP production?

Answers

Answer:

Abstract

Explanation:

Among the primary biochemical changes evoked by illumination in dark-grown mycelia of Trichoderma viride is the temporal rise in the intracellular level of ATP. We investigated the dependence of ATP changes on light intensity and exposure. Marked changes in the intracellular ATP levels occurred within 10 min of the onset of illumination and their rapidity was proportional to the light intensity. Statistically significant changes in the intracellular levels of ATP were observed at light intensities in the range of 0.9–2.5 klx with the maximum increase (150% above the intracellular level of ATP in the dark control) at 1.2 klx.

The study of structure or how organisms are organized on the cellular, tissue, organ, system, or organism levels is called what

Answers

Answer:

Anatomy.

Because Anatomy is the study of internal body organs

Hi I am really struggling with this question. I'll take any help I can get. :)​

Answers

Answer:

Question- How does temperature affect rate of respiration?

Independent V. - Temperature

Dependent V. - Rate of respiration

Constants

- Fish species

- Water oxygen levels

- Size of the fish

Hope this helps!

• How removal of starfish from an aquatic environment/ocean will affect the biodiversity?

Answers

When the starfish were removed from the area as part of an experiment, the mussel population swelled and crowded out other species. The biodiversity of the ecosystem was drastically reduced. Payne's study showed that identifying and protecting keystone species can help preserve the population of many other species.

How are gymnosperms in category gnetophyta usually pollinated?

A. by wind

B. by hand

C. by insects

D. by water

Answers

Answer:

by insects

Explanation:


The coastal ocean zone and estuaries are alike in that both are important as breeding and nesting areas for birds. True or fualse?

Answers

Answer:

I think True

Explanation:

You can refer to it for more information:

The coastal ocean zone and estuaries are alike in that both are important as breeding and nesting areas for birds. The depth of the water in an aquatic ecosystem determines the amount of sunlight that living things receive there. ... The water in freshwater wetlands is always brackish

which aspect of el nino can give scientists a preview of earth as temperatures rise with global warming?

Answers

Answer:

Its warming of sea surface temperatures

Answer:

its warming of sea surface temperatures

Explanation:

If a person has low blood glucose levels, what endocrine gland is the likely cause?

Answers

Answer:The Endorcrine gland most likely responsible is the Pancreas, it causes both high and low blood-glucose levels

Explanation:

Antibodies are
1 point
proteins that recognize familiar antigens
proteins that recognize foreign antigens
sugars that recognize familiar antigens
sugars that recognize foreign antigens

Answers

Answer:

proteins that recognize foreign antigens

Why is the alpine tundra biome worth protecting WELL GIVE BRAINLIEST IF YOU CAN HLO ME

Answers

Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels

What can you learn about by studying DNA?

Answers

Answer:

Explanation:

                  The study of human DNA and genetics can be intellectually fascinating, but it also has plenty of practical applications. From the use of DNA in court cases to the discovery of new therapies for genetic diseases, a thorough understanding of the human genome can have important medical, social and legal impacts.

All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in​

Answers

Answer:

I think the answer will be protein.

Answer:

the answer is carbohydrates

what is photosynthesis?​

Answers

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide,water and minerals

a person has a cardiac output of 4.9L per minute. the stroke volume of each heart beat is 70 ML

Answers

that's true

stroke volume is the volume of blood pumped by each ventricle per beat

cardiac output is the blood pumped by ventricles per minute

Is that a question or a statement?

What is the function of the Xylem in a leaf?

Answers

A leaf is xylem the of function the is what

Question 7 (True False Worth 1 points) (01.02 LC) The results of an experiment can be validated through replication O True 0 False​

Answers

Answer:

Im pretty sure its true ill coment latter to tell youif it is or not

Explanation:

Answer:

true

Explanation:

The results of an experiment can in fact be validated through replication

what is most important in life of human beings

Answers

Answer:

it has to be human values unless if the question is emphasizing on something materialistic

3. Suppose you work for a Blabbit Labs, the developer of many different pharmaceutical products. Your research
division has stumbled across a new drug that you believe cures male pattern baldness. Before you can start selling the
drug, you must demonstrate to the U.S. Food and Drug Administration that the drug is effective.
a. What is the question being asked?

Answers

First I would ask if it is safe. Is there any side effects? Does it contain anything that may cause an allergy reaction?

In regards to the information given, the question being asked should be”Is the drug that is believed to cure male pattern baldness effective?” although I’m not completely sure that was what you were looking for but I hope that helped!!

name at least three other neurotransmitters and state the roles of theese neurotransmitters in human body.​

Answers

Answer:

Glutamate (Glu) Acetylcholine (ACh) Histamine Dopamine (DA). (Glu) is an important neurotransmitter, (ACh) is the chief neurotransmitter of the parasympathetic nervous system, (DA) regulates sleep patterns, and influencing cognition.

Explanation:

What does the structure of amino acids consist of

Answers

An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid.

Which of the following best describes a eukaryotic cell?

A. A cell that contains a membrane-bound nucleus
B. A cell that does not contain any membrane-bound organelles
C. A cell that is surrounded by a rigid cell wall
D. A cell that is not surrounded by a cell membrane

Answers

Answer:

C . A cell that is surrounded by a rigid cell wall is the correct answer .

ASAP
When you become too cold, your hypothalamus will signal what parts of your body to raise the temperature?
A. Muscles and kidneys
B. Skin and pancreas
C. Muscles and skin
D. Kidneys and lungs

Answers

Answer:

c

Explanation:

Muscles and kidneys or muscles and skin

List 3 similarities of a virus and bacteria and give evidence from the text

Answers

Answer:

similaritis between virus and bacteria are

Explanation:

1.they are micro organisms

2.they can't be seen with nakes eyes of human

3.bacteria and virus are both living and non living

Other Questions
In my city, there are many organizations for the youth who want to contribute their enthusiasm to the society. My classmates and I joined the (1)Union Club two months (2)We went to the area where most poor families live to help them tidy (3)their gardens and houses. We (4)help to build new houses for the homeless. Our club works very effectively and attracts many (5) to take (6)in because it is not necessary for members to have any experience in the job. We (7)only their willingness and (8)for the miserable.Note: enthusiasm : s nhit tnh /willingness: s t nguyn / the miserable: ngi bt hnh1. a. Young b. Youth c. Youthful d. Younger2. A. yesterday b. past c. last d. ago3. A. in b. down c. up d. to4. A. and b. then c. also d. but5. A. volunteers b. voluntary c. voluntarily d. volunteer6. A. past b. part c. pass d. passed7. A. need b. are needing c. needs d. needed8. A. like b. love c. hate d. dislike brianna practices the panio 30 minutes each day write an expression for the number of hours she practises in d days A state lottery sells instant-lottery scratch tickets. 12% of the tickets have prizes. Neil goes to the store and buys 10 tickets. What is the probability that exactly three of Neil's tickets will have prizes? Ok, so I'm trying to read piano sheet music, but I'm a bit confused. In the pic, can you guys tell me what they are and how does one play them on the keyboard? Like do you play one bar with the left hand and the other with the right hand? If so which bar goes with which hand? I want the answer for the forth question (4) future practice of example is what a lovely rose it is What does Thoreau think about the notion of improvement in antebellum in American society? What effect do long and complex sentences with several clauses have on a storys pacing? Which verb completes the sentence?Do you _______ when your supervisor will be back?A. knowB. knewC. known Please help.You want to find some people to share a house or apartment. Write a profile of yourself for a website called Find a roommate. Write about 100 words.Use a different paragraph for each topic: personal information about you and your job, your free time activities, where you want to live.Use because to give reasons. What is a causative agent of Encephalitis? If you want to improve your grammar skills, what would you do? Write 5 ways for students and 5 ways for teachers. 42 deliveries in 3 hours = deliveries per hour Seeking and enjoying creative and stimulating mental activities that allow you to share your gifts with others in social settings will best improve your overall ________ wellness. emotional intellectual physical spiritual What benefits does using this model have over preforming the modeled procedure with physical materials? Please help!! 22. The ratio in which (4, 5) divides the join of (2, 3)and (7, 8) is :(a) 4 : 3(c) 3 : 2(b) 5:2(d) 2:3 what type of representation was used in fiji before the 1970 independence what is 103422 ?[tex]1034 \div 22 [/tex] muddy water is an example of ______mixtures Make mathematical expressions then, simplify ,50 is divided by 2 times one more than the difference of F and 3.