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
Nuetrik [128]
3 years ago
12

Select the statements that are true. Question 1 options: CO2 and O2 are water-soluble molecules that diffuse freely across cell

membranes. The differences in permeability between artificial lipid bilayers and cell membranes arise from variations in phospholipid content. Transporters are similar to channels, except that they are larger, allowing folded proteins as well as smaller organic molecules to pass through them. Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Biology
1 answer:
lidiya [134]3 years ago
8 0

Answer:

CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes.

Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.

Explanation:

CO2 and O2 are highly soluble molecules in water due to their polarizability and their ability to react with water molecules and form new compounds. CO2 is 30 times more soluble in water than oxygen, which also has a high solubility. This ability allows these two molecules to diffuse freely across cell membranes.

Cells promote hydrolysis, that is, the breakdown of ATP molecules when they need to expend energy for any metabolic process, especially when they need to maintain a balance between ion concentrations inside and outside the cell. This is because ATP is a highly energetic molecule and its breakdown promotes energy for the cell to use in its activities.

You might be interested in
The image shows the 'popped' endosperms of popcorn. What purpose does the starchy endosperm serve? A) food storage B) reproducti
kvv77 [185]
The correct answer is A
8 0
3 years ago
The Monterey pine and the Bishop's pine inhabit some of the same areas of central California. The Monterey pine releases pollen
Naddik [55]

Answer:

The Monterey pine and the Bishop's pine inhabit some of the same areas of central California. The Monterey pine releases pollen in February, while the Bishop's pine does so in April. This is an example of <u>temporal</u> isolation.

Explanation:

Temporal isolation is a form of reproductive isolation in which two or more species reproduce at two separate times.

<u>For example:</u> Northern america leapord frog mates in April and North America Bullfrog mates in july.

As in the given scenario, reproductive isolation is occuring in which two species (Monterey pine and Bishop's pine) are reproducing (producing pollens) at two separate times(February and April). Hence it is an example of temporal isolation.

3 0
3 years ago
Name the process by which soil is formed from rocks? ?
r-ruslan [8.4K]

Weathering and soil formation.

3 0
3 years ago
Read 2 more answers
Describes how energy is produced from the power of water. In your answer, include the terms: ocean water, turbine, electricity,
lapo4ka [179]

Most hydroelectric power plants have a dam and a reservoir. These structures may obstruct fish migration and affect their populations. Operating a hydroelectric power plant may also change the water temperature and the river's flow. These changes may harm native plants and animals in the river and on land. Reservoirs may cover people's homes, important natural areas, agricultural land, and archaeological sites. So building dams can require relocating people. Methane, a strong greenhouse gas, may also form in some reservoirs and be emitted to the atmosphere. Reservoir construction is "drying up" in the United States  Gosh, hydroelectric power sounds great -- so why don't we use it to produce all of our power? Mainly because you need lots of water and a lot of land where you can build a dam and reservoir, which all takes a LOT of money, time, and construction. In fact, most of the good spots to locate hydro plants have already been taken. In the early part of the century hydroelectric plants supplied a bit less than one-half of the nation's power, but the number is down to about 10 percent today. The trend for the future will probably be to build small-scale hydro plants that can generate electricity for a single community.  As this chart shows, the construction of surface reservoirs has slowed considerably in recent years. In the middle of the 20th Century, when urbanization was occurring at a rapid rate, many reservoirs were constructed to serve peoples' rising demand for water and power. Since  Hydroelectric energy is produced by the force of falling water. The capacity to produce this energy is dependent on both the available flow and the height from which it falls. Building up behind a high dam, water accumulates potential energy. This is transformed into mechanical energy when the water rushes down the sluice and strikes the rotary blades of turbine. The turbine's rotation spins electromagnets which generate current in stationary coils of wire. Finally, the current is put through a transformer where the voltage is increased for long distance transmission over power lines.   Hydroelectric-power production in the United States and the world!

(sorry this is the second part)

8 0
3 years ago
7th grade Complete the following analogy:
meriva

Answer:

B

Explanation:

4 0
3 years ago
Other questions:
  • Consider the model of the food chain. Imagine there is a herbicide poison spill and all the grass is killed. How will this influ
    6·1 answer
  • Plasmodium, the world’s most lethal parasite, causes malaria. The parasite enters the
    15·1 answer
  • The green color of the caterpillar is an example of a
    10·1 answer
  • A mixed reference "locks" one part of the cell reference while the other part can change. _______________
    7·1 answer
  • What are two molecules that are used for long term energy storage?
    8·1 answer
  • Is Reproduction necessary for the survival of an individual
    7·2 answers
  • A group of scientists has recently created a strawberry with a new mutation. This mutation causes the strawberry plant to produc
    9·1 answer
  • Following animals are also known as ruminant animals:<br><br> A) Bovines B) worms C) Humans D) cats
    5·1 answer
  • Which term refers to the microscopic physical gap between the presynaptic and postsynaptic neurons at a chemical synapse
    12·1 answer
  • If you have 100 apples and you take 30 how many do you have?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!