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
Shtirlitz [24]
2 years ago
12

What is the answer to these two questions

Biology
1 answer:
kotegsom [21]2 years ago
8 0

Answer:

4.B

5.C

Explanation:

You might be interested in
The digestive, respiratory and circulatory systems are controlled
Maksim231197 [3]

Answer:

D

Explanation:

4 0
2 years ago
When a red blood cell is placed in a hypertonic solution, which will occur?
Sergeu [11.5K]
If a red blood cell is placed in a hypertonic solution, the cell would shrink.

Hypertonic solution means that the solution has a lower water potential than the other side (which is the cell's cytoplasm in this case), and by that, water molecules would have a tendency to flow from a region of higher water potential to a region of lower water potential. This movement of water molecules is called osmosis. But note that a semi-permeable membrane (a membrane which can decide what substances can go in and out, the cell membrane is an example) has to be present in osmosis, or else the movement may be regarded as diffusion.

As the water molecules flowed away from the red blood cell cytoplasm, the cell loss so much water that the membrane has nothing much to hold and thus the cell shrinks. 
5 0
3 years ago
which principles states, that in undisturbed rock layers, the oldest rocks are on the bottom and the youngest rocks are on top
Leviafan [203]

Answer:

The correct answer is principle of superimposition.

Explanation:

According to the superimposition principle, in the undisturbed rocks, the youngest rocks are situated on the top and the oldest rocks are found in the bottom. The phenomenon takes place due to withering. The rocks get withered because of the influence of air and water.  

The soil particles or the sediments get gathered at another site. The deposits of sediments get concentrated with time and result in the production of rocks. The mature rocks get surrounded by the layers of sediments with time passing by. These sediments get concentrated again to produce novel rocks. Through this procedure, the fresh young rocks get produced over the older ones.  

3 0
3 years ago
The flow of energy in an ecosystem is best
natulia [17]
1, as the energy comes from the sun, then plants get it through photosynthesis, and finally the consumers obtain the energy from consuming animals on a lower trophic level than themselves. energy cannot flow down the food chain, only up.
3 0
3 years ago
An unknown organism is found in the forest and the gene is sequenced as follows:
rjkz [21]

Answer:

I beleive its somthing close to a  pig

Explanation:

The DNA sequence is closest to the pig . The amino acids Gly, Thr, Leu, and Ala are from the "unknown animal." On the worksheet, the pigs amino acids are Gly, Thr, Phe, and Ala. There is only one different amino acid between the two.

I might be wrong but there u go

8 0
2 years ago
Read 2 more answers
Other questions:
  • Which step can occur even more rapidly by PCR?a. target DNA removed from cells and isolated b. cloning host treated with calcium
    10·1 answer
  • For every man who has type i osteoporosis, about how many women have it? 2 3 4 6
    7·1 answer
  • Echolocation is an adaptation bats use to _______.
    9·2 answers
  • A biologist conducted an experiment to determine the rate at which DNA mutations occur. The biologist was careful to record the
    15·1 answer
  • 3. Were there any stages of the cell cycle that you did not observe? How can you explain this using evidence from the cell cycle
    15·1 answer
  • Which of the following illustrates mechanical weathering
    14·1 answer
  • PLEASE HELP! .......................
    6·1 answer
  • How can the carbon in sediments reach the atmosphere? (3 points)
    15·1 answer
  • Root (b) A sugarcane is monocotyledon; therefore it has _______________________ root​
    5·2 answers
  • I can’t stop crying
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!