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
raketka [301]
3 years ago
5

Identify all of the true

Biology
1 answer:
damaskus [11]3 years ago
8 0

Explanation:

a) True. The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse.

b) True. Active transport requires cellular energy to achieve this.

c) False. Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration.

d) True. For diffusion to work, the particles must be able to move around.

e) True. Osmosis requires energy from respiration to be carried

out.

f) False. Partially permeable membranes allow  only water but not other dissolved substances to pass through.

You might be interested in
Binding Ca2+ to the troponin complex causes ____________ to move
mylen [45]

Answer:

Tropomyosin

Explanation:

The calcium binding to troponin and induces the muscle contraction. The active binding site gets exposed due to the calcium binding.

The calcium ions then attaches with troponin molecule. This changes the shape of troponin and removes the tropomyosin protein from the binding site.  No ATP is available during this process.

Thus, the correct answer is option (d).

7 0
3 years ago
Read 2 more answers
Dna replication is called semiconservative because _______________ of the original double-helix appears in one daughter strand f
Tamiku [17]
I believe the answer is this:
DNA replication is called semi-conservative because half of the original double-helix appears in one daughter strand formed in replication if you need any more help then please comment and let me know ok. :)
7 0
3 years ago
Improve the student’s model of gas exchange by drawing the missing component.
larisa [96]

Answer:

The diagram can be improved by:

                                  Lungs

                                       ↓

                                   oxygen

                                       ↓

                      Red blood cells (carrying oxygen)

                                       ↓

                  Organs (like stomach and liver etc) from where carbon    

                               is taken and oxygen is supplied

                                         ↓

                   RBC's carrying Carbon dioxide to the lungs

The component which is missing in the diagram are the organs where exchange of gases occurs. The red blood cells carry oxygenated blood from the lungs to all parts of the body and carries the wast carbon dioxide gas from them back to the lungs. The carbon dioxide is then exhaled by the lungs.

8 0
3 years ago
Read 2 more answers
What does the author mean by the word carving
lapo4ka [179]
Do you have the sentence where the author uses the word?
5 0
3 years ago
What are chemical properties
Alekssandra [29.7K]

Answer:

C. Properties that can change the chemical nature of matter.

Explanation:

Chemical properties is a characteristic of a chemical substance observed when it undergoes a chemical reaction on seeing its precipitation. On knowing the chemical properties of a substance it aids in separation, purification and classification of a compound. some examples of chemical properties are as follows:

1. Toxicity

2. Inflammability

3. Reaction with other chemicals

4. Oxidation

7 0
3 years ago
Other questions:
  • URGENT PLEASE HELP, BRAINLIEST AND THANKS!!
    14·1 answer
  • Why are proteins considered polymers but lipids not
    15·1 answer
  • The controlled process by which hydrocarbons are broken down or rearranged into smaller, more useful molecules is called ____.
    5·1 answer
  • When two atoms transfer electrons, the bond formed is called a/an _______ bond.
    8·1 answer
  • What is a qualitative observation
    13·1 answer
  • Which of the following is not a function of stems?
    9·1 answer
  • Describe the sampling method for determining population size.
    5·2 answers
  • Cancer is caused by abnormal growth is due to a genetic mutation. Which of the following can cause this genetic mutation? (Choos
    10·1 answer
  • ) What happens when a phosphate group is removed from an ATP molecule?
    11·1 answer
  • Genes important in the embryonic development of animals such as homeobox containing genes, have been relatively well conserved d
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!