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
diamong [38]
3 years ago
15

HELP!

Biology
2 answers:
mr Goodwill [35]3 years ago
6 0
The correct answer will be the second choice (B)
Andrews [41]3 years ago
6 0

Answer:

B They are acquired through exposure to mutagens.

Explanation:

You might be interested in
Aldosterone (a steroid hormone) is a small, nonpolar, hydrophobic molecule that enters a target cell by moving across the plasma
VMariaS [17]

Answer: Simple difussion

Explanation:

Aldosterone is a steroid hormone of the mineralocorticoid family, produced by the external section of the glomerular zone of the adrenal cortex in the adrenal gland. It acts in the conservation of sodium, both by secreting potassium and by increasing blood pressure.

Simple diffusion is the process by which molecules flow through a permeable membrane without any external input of molecular energy. This process, which is ultimately due to a<u> difference in molecular concentration between the two media separated by the membrane, does not require an input of energy</u> because its main driving force is the increase in the total entropy of the system. <u>In this process the displacement of the molecules is produced following the concentration gradient, the molecules cross the membrane from the medium where they are in greater concentration, towards the medium where they are in lesser concentration</u>.

The molecules that can easily pass through the cell membranes due to this phenomenon are only gases (e.g. CO2, O2), hydrophobic molecules (e.g. benzene) and small polar molecules (e.g. H2O and ethanol), This is because hydrophobic and apolar molecules are soluble in the central apolar region of the lipid bilayer, and small polar molecules are small enough that unfavorable interactions are compensated for by an increase in the entropy of the system. On the other hand, large polar molecules such as glucose, amino acids and charged molecules or ions (Hx+, Na+, Cl+ and Ca2+) interact too strongly with the aqueous environment outside the lipid bilayer, and it is therefore very unfavourable from an energy point of view to break these interactions to cross the central hydrophobic region. As a consequence, biological membranes are practically impermeable to this type of molecules, so they require other transport mechanisms.

<u>So, since aldosterone is small, nonpolar and hydrophobic molecule, it passes throught the plasma membrane easily, down a concentration gradient</u>.

3 0
3 years ago
A. Or B. Or C. ........
Step2247 [10]
C just trust me with this.
6 0
4 years ago
Should water (H20) be included in the model as a reactant or product? If so, how should it be included?
Veronika [31]

Explanation: a is right

dfwdwggewgrgwrhrgwrhrw

8 0
3 years ago
PLEASE HELP ASAP!!!! CORRECT ANSWERS ONLY PLEASE!!!!
IrinaK [193]
Lets go with 0 M....
7 0
3 years ago
Read 2 more answers
What determines whether a solution is an acid or a base
Tpy6a [65]

Answer:

Acid is sour in taste and bases are not

8 0
3 years ago
Other questions:
  • What is the key difference between exocrine and edocrine glands?
    7·1 answer
  • How is a species defined
    9·2 answers
  • What type of information is least likely to be included in a yearbook? sports in which a student has participated any honors tha
    12·2 answers
  • All of the following are true regarding hypothalamic control of homeostasis, except one. Choose the exception. Group of answer c
    14·1 answer
  • Why is it important for your heart to keep oxygen-rich blood separate from oxygen poor blood?
    11·1 answer
  • If a rock has a volume of 2cm3 and a mass of 12g what is its density
    11·1 answer
  • How can the appearance of white baby rabbits be explained when the mother has white fur, and the father has black fur?
    8·1 answer
  • The
    12·1 answer
  • The abdominopelvic and thoracic cavities are subdivisions of the
    13·1 answer
  • Three factors that cause environmental pollution​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!