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
Anvisha [2.4K]
1 year ago
6

Physical barriers that help prevent an individual from contracting diseases include __________. a. white blood cells, enzymes, t

ears, and skin b. swea
Biology
1 answer:
Nostrana [21]1 year ago
4 0

Sweat, tears, skin, and mucous membranes are among the physical defenses that keep a person from being sick.

<h3>What causes infectious diseases?</h3>

Coming into contact with a person or an animal who has the virus is one of the most straightforward ways to obtain the most contagious or infectious diseases. Direct contact, such as person-to-person contact, can transfer contagious diseases. Direct transmission of bacteria, viruses, or other germs from one person to another is the primary method by which contagious diseases are typically disseminated. If someone who is unaffected touches, kisses, coughs, sneezes, or has the virus or bacterium on them, this could happen. Additionally, these pathogens can disperse through sexual contact and the exchange of bodily fluids. The person who spreads the infection may only be a carrier and not exhibit any signs of the illness.

To know more about infectious diseases, visit:

brainly.com/question/13327723

#SPJ4

You might be interested in
Determine the level of measurement of the variable with explanation.
Pavlova-9 [17]

It has properties of the ordinal level of measurement and the differences in the values of the variable have meaning. A value of zero in the interval level of measurement does not mean the absence of the quantity. Arithmetic operations such as addition and subtraction can be performed on values of the variable is called interval.  While nominal the values of the variables name, label or categorize. In addition, the naming scheme does not allow values of the variables to be arranged in a ranked or specific, order. 

6 0
2 years ago
Why do we spread talcum powder on a carrom board while playing
inna [77]

We sprinkle powder on carrom board to make the surface of the board smooth. This reduces the friction between the surface of the carrom board, the striker and the coins. As a result, the coins and the striker can move easily on the carrom board.

3 0
2 years ago
What are the structural and functional similarities and differences between mitochondria and chloroplasts?
Sveta_85 [38]

Answer:

Similarities between Mitochondria and Chloroplasts-

Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.

Difference between Mitochondria and Chloroplasts-

They have different number of compartments, have different functions, and are involved in different energy processes.

Explanation:

Difference in Mitochondria and Chloroplasts-

a) Chloroplast is found in plants and unicellular organism and Mitochondria is found  all cells.

b) Chloroplast converts solar energy into chemical energy while Mitochondria converts one form of chemical energy into other form of chemical energy

c) Chloroplast is involved in photosynthesis while mitochondria is involved in cellular respiration.

d) Chloroplast has three parts i) Thylakoid ii) stroma  and iii) granum while mitochondria has three parts i) Critsa ii) Matrix

Similarities between Mitochondria and Chloroplasts-

Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.

4 0
3 years ago
Hemoglobin is a protein in the blood that is made of 4 polypeptide chains. Two alpha chains are composed of 141 amino acids each
Ghella [55]
Amino acid differs at the glutamine, which is converted to valine in hemoglobin S. the body produced hemoglobin S due to a point mutation in the DNA sequence which results in different amino acid to be formed during translation of DNA sequence codons.
8 0
3 years ago
During pollination in seed plants, pollin grains
Andre45 [30]

Answer:

umm is this a staement or a question

Explanation:

3 0
3 years ago
Other questions:
  • In the initial period of learning, ________ describes when an organism learns to connect a neutral stimulus and an unconditioned
    5·2 answers
  • Which scientific investigation does not include dependent and independent variables?
    5·1 answer
  • Which ocean movement do power plants use to produce usable energy?
    7·2 answers
  • PLEASE HELP❤️❤️❤️
    13·1 answer
  • Eczema is a type of skin disease that appears as rashes or swelling. Eczema causes skin irritation or itchiness. What type of ti
    10·2 answers
  • Moving a spring toy up and down will create what kind of wave?
    9·2 answers
  • Define parent material in science
    15·1 answer
  • I need an answer to thos anyone willing to help?​
    10·1 answer
  • A soil associated with the hot and wet tropics is _____.
    6·1 answer
  • Describe the mechanism of blood sugar regulation (20 marks)​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!