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
Gennadij [26K]
3 years ago
12

Please help me with these!

Biology
1 answer:
romanna [79]3 years ago
5 0
12.  D

13. B

14 . C


I hope I helped you. I don't know if I was helpful.
You might be interested in
If you wanted to observe a living organism-an amoeba, for example-which type of microscope would you use?
yKpoI14uk [10]

Answer:

compound light microscope

Explanation:

an amoeba is a microscopic unicellular protist

7 0
3 years ago
Which of the following best describes the function of fruits? Group of answer choices
ratelena [41]

The correct answer is B. Protection and dispersal of seeds

Explanation:

In plants, fruits are structures that form as a result of fertilization, which makes ovules become seeds and flowers maturate to become fruits. This is necessary for the reproduction of plants, as fruits contain seeds or genetical material that is protected by different layers and leads to new plants if seeds are dispersed. The process of dispersal commonly occurs as the fruit falls from the plant or is eaten by other organisms and then disperse in other areas, which allow plants to reproduce. According to this, the main function of fruits is protection and dispersal of seeds.

4 0
3 years ago
5. The air we breathe is mainly a mixture of nitrogen gas, oxygen gas, and carbon dioxide. What would
emmasim [6.3K]

Answer: 160 mm HgTherefore, the partial pressure of oxygen is: PO2 = (760 mm Hg) (0.21) = 160 mm Hg, while for carbon dioxide: PCO2 = (760 mm Hg) (0.0004) = 0.3 mm Hg.

Explanation:

6 0
2 years ago
Explain how the release of sodium and chlorine would lead to a loss of water in the intestines
frosja888 [35]

Answer:

Please find the explanation below

Explanation:

Sodium (Na) and Chlorine (Cl) are two electrolytes that play important role in the absorption of water and nutrients in the small intestine. However, as mentioned in the question, the release of sodium and chlorine would lead to a loss of water in the intestines. This is because of the OSMOTIC phenomenon.

Osmosis is the movement of water molecules from a region of high concentration of water/low concentration of solute to a region of low concentration of water/high concentration of solute via a semipermeable membrane. In this case, the Na+ and Cl- ions serve as the solutes, which when released out of the intestine causes the solution in the intestines to be HYPOTONIC compared to the intestinal environment. This causes an OSMOTIC GRADIENT.

This osmotic gradient i.e. difference in concentration provokes osmotic flow of water from the intestines, which has a low solute/high water concentration, to the outside of the intestines, which has a high solute/low water concentration. Hence, water is lost from the intestine because the solute concentration becomes low when sodium and chlorine ions are released.

3 0
2 years ago
PLZ HELP ILL GIVE 5 PTS AND BRAINLIST IF ITS RIGHT!!!
ale4655 [162]

Explanation:

water

please mark me as brianlyest

8 0
2 years ago
Other questions:
  • When does the cell have to use active transport?
    13·1 answer
  • Autonomic dysreflexia is characterized by a. hypotension and shock. b. hypertension and bradycardia. c. pallor and vasoconstrict
    14·1 answer
  • Describe logistic population growth from a small population to a large one. be sure you talk about the population growth rate (t
    8·1 answer
  • Early land animals had gills as well as lungs. Please select the best answer from the choices provided T F
    8·2 answers
  • Which measurements are equal to 671 decimeters?
    6·2 answers
  • Which organisms would share the most characteristics?
    6·1 answer
  • Which is the main reason cells are replaced in the body?
    8·2 answers
  • Fish are part of the
    11·1 answer
  • Hello, i came to say hello
    14·1 answer
  • Many examples that support the theory of evolution exist as the result of either artificial selection, which are typically _____
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!