1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vagabundo [1.1K]
3 years ago
13

Why do plant cells need a cell wall but animal cells do not

Biology
1 answer:
morpeh [17]3 years ago
6 0
Cell walls are rigid which gives plants their shape. Animals have only cell membranes which allows animals to be flexible as animals are moving organisms. Plants, on the other hand, are sturdy and upright and are sessile organisms. Cell walls allow plants to grow upright as high as their maximum height and to be sturdy enough to survive harsh environments.
You might be interested in
Sean outperforms the other air traffic controllers, accurately detecting three times as many potential airplane space violations
Ronch [10]

In the given case, acetylcholine and norepinephrine are the neurotransmitters that may be present at the greater concentrations.  

Norepinephrine refers to a neurotransmitter, which is essential for emotions, attentiveness, dreaming, sleeping, and learning. It is also discharged as a hormone in the bloodstream, where it enhances the rate of heart and makes the blood vessels to contract.  

Another neurotransmitter known as acetylcholine refers to the chemical, which the motor neurons of the nervous system discharge to stimulate the muscles.  


7 0
3 years ago
Which biome does this photograph represent?
Naddik [55]

This paragraph represents desert.

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em>

3 0
3 years ago
Read 2 more answers
Which enzymes in pancreatic juice are responsible for the digestion of proteins? amylase and lipase trypsin and chymotrypsin amy
Hunter-Best [27]
Trypsin and chymotrypsin
5 0
3 years ago
Alveolar type ________ (VIII) cells are responsible for producing surfactant
lord [1]

Answer:

Type II cells

Explanation:

Type II alveolar cells are the round-shaped or cuboidal epithelial cells. These cells have a free surface with microvilli. The function of the type II alveolar cells is to secrete the alveolar fluid to keep the surface of the cells moist.

A mixture of phospholipids and lipoproteins is present in the alveolar fluid that serves as surfactant and reduces the surface tension of the alveolar fluid. The overall effect of the presence of surfactant in alveolar fluid is to protect the alveoli against collapsing during exhalation.

5 0
3 years ago
A student analyzed a viral genome and found that the genome had the following nucleotide composition. 28% adenine 20% thymine 35
egoroff_w [7]

Answer: Option A) Double-stranded DNA

Explanation:

First, the presence of thymine infers that the genome is DNA.

Then, to determine whether it is single or double stranded, we check if the sum of all nitrogenous bases is equal to 100%

A + C + G + T = 100%

28% + 35% + 20% + 17% = 100%

Since all bases makes 100%, we can conclude that the genome is a double stranded DNA

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is created when chemical reactions join atoms together?
    8·2 answers
  • What country is the top oil producing and exporting country? What country is the top oil consuming and importing country?
    8·1 answer
  • Drinking extra fluid in the days leading up to an athletic event _____.​
    5·1 answer
  • How does the density of ice compare to that of liquid water and why is that property important to aquatic organisms
    14·2 answers
  • PLEASE HELP!
    11·1 answer
  • The mineral fluorite is used in the process to make what
    13·2 answers
  • 2. Which type of joint has the most amount of movement?
    9·2 answers
  • Describe something that made you curious. How did you try to find out more about what made you curious?
    15·1 answer
  • Which of the following is a slow environmental change?
    11·1 answer
  • I'm just not quite sure.​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!