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
aleksandrvk [35]
3 years ago
13

Most of the exchange surfaces of multicellular animals are lined with _____.

Biology
1 answer:
e-lub [12.9K]3 years ago
5 0

Answer:

D) epithelial tissue

Explanation:

The exchange surfaces of the organisms are the site for an exchange of substances or gases. These surfaces mostly lie within the body and protect the exchange tissues. The exchange surfaces of multicellular organisms are lined with epithelial tissues. These tissues have tightly packed cells with little or no intercellular spaces. The epithelial tissues serve to protect the exchange surfaces. Sometimes, these epithelial linings are modified to perform an additional function. The exchange surfaces are finely branched or folded to have a very large area. The digestive, respiratory, and excretory systems all have such exchange surfaces.

You might be interested in
A patient's HDL, LDL, and triglyceride levels are 62, 77, and 60, respectively. What is the patient's total cholesterol score? S
Len [333]

Answer:

Total cholesterol score is 199

199 is high cholesterol score especially as it very close to 200. The patient should adopt diets that do not include high cholesterol food

Explanation:

a. Firstly, we want to calculate the patient’s total cholesterol score.

To get this, we use a mathematical approach.

Mathematically;

the total cholesterol score = HDL + TDL + Triglyceride = 62 + 77 + 60 = 199

The patient’s total cholesterol score is 199

b. As a doctor, I will advice the patient on the status of these measurements. Using the scale of cholesterol level, a measurement of total cholesterol = 200 represents a high cholesterol level. Since 199 is very close to 200, the patient is at a risk of high cholesterol levels and thus needs a dietary change.

8 0
3 years ago
What assumptions did Engelmann make in order to conclude that red and violet-blue light were more effective than green light in
iren [92.7K]

Answer:

The distribution of chloroplasts in each algae cell was approximately the same.

The number of bacteria grouped at each wavelength (color) was approximately proportional to the amount of oxygen produced by this part of the algae.

Explanation:

Photosynthetic pigments absorb blue, red and green lights. The wavelength of light that is the most effective in driving photosynthesis is 420 nanometers, which corresponds to blue light.

The wavelength of 475nm and 650nm are most effective in driving photosynthesis.

6 0
3 years ago
The mucous membrane that lines the eyelids and is reflected over the anterior surface of the eyeball is the conjunctiva. The muc
hichkok12 [17]

Answer:

True

Explanation:

Conjuctiva is that thin transparent mucous membrane that covers both the anterior surface and the inner surface of the eyelid. Conjuctiva is an important component of the eye that keeps the inner surface of the eyelids and the front surface of the eye moist and lubricated. It also helps protect the eye from foreign particles and from infection.

The part of the conjunctiva that covers the eyelids and is reflected over the anterior surface of the eyeball is called the bulbar conjunctiva. The part that is found coating the inner surfaces of the eyelids is called the palpebral conjunctiva.

7 0
3 years ago
A<br> A balance is best used to measure a sample's<br> volume<br> b. length<br> C. mass<br> d. size
Lerok [7]

Answer:

size

Explanation:

4 0
3 years ago
Penicillium notatum is a mold that is the source of the antibiotic penicillin. Which is the reason for placing it in the phylum
BartSMP [9]
The answer is c 
(my test says its right)

4 0
3 years ago
Other questions:
  • The idea that younger rock layers are deposited on top of older rock layers in an undisturbed section of sedimentary rock can be
    10·2 answers
  • What is the least reliable method for identifying minerals?
    6·2 answers
  • when measuring thr lenth of an earthworm, which graduations would allow for the most accurate measurement
    15·1 answer
  • John drank six 12-ounce beers from 9 p.m. to 12 a.m. How many drinks still remain in his bloodstream?
    7·1 answer
  • Calculate the net force of the following situation.
    7·1 answer
  • The Earth's changing distance from the Sun during the year causes the seasons true or false​
    12·1 answer
  • Millions of years ago, a small population of birds lived on the Hawaiian Islands. Over time, this population evolved into more t
    12·2 answers
  • Cómo se denomina al tipo de acción metabólica que genera la glucólisis y respiración celular?
    15·1 answer
  • HELP. Are gills located internally or externally in the body of animal? DO NOT COPY FROM GÔO.GLE. I'VE ALREADY SEEN THAT AND I D
    5·1 answer
  • To remember abdominal muscles, explain what TIRE stand for the phrase “spare TIRE”.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!