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umka2103 [35]
3 years ago
10

Two main functions of leaves are photosynthesis and____.

Biology
1 answer:
sasho [114]3 years ago
5 0
Gas exchange because each stoma in the leaf can be opened or closed. In the light the guard cells aboard water and become turgid and the stoma opens
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The presence of a negative allosteric effector on an allosteric protein would: a. cause a shift to the left in the sigmoidal cur
Feliz [49]

Answer:

d. raise the apparent value of the equilibrium constant, L.

Explanation:

Allosteric regulation is a type of regulation of an enzyme by binding an effector molecule at a site other than the protein's active site (i.e., the allosteric site). The equilibrium constant (L) refers to the transition between two forms of an allosteric protein in absence of a ligand. The properties of allosteric enzymes are explained by conformational changes associated with a low-affinity tense (T) state, or a high-affinity relaxed (R) state. Negative allosteric effectors are molecules that bind to the allosteric site on an enzyme in order to decrease its activity, thereby leading the enzyme to a low activity T state and thus increasing the value of the equilibrium constant.

4 0
3 years ago
How many chromosomes do sugar gliders have?
Reil [10]
Two chromosomes is correct
8 0
2 years ago
Read 2 more answers
For a species with a haploid number of 15 chromosomes, how many different combinations of maternal and paternal chromosomes are
babymother [125]
The answer is:  " 32,768 " .
___________________________________________
Explanation:
__________________________________________________________
 →  2ⁿ  = ? ;  {that is: "2" , raised to the "n th" power, equals {<u>what value</u>} ?
___________________________________________
 → Note that "n" is the haploid number, which is: 
                           "15" (value given within this very question).
__________________________________________________
→ So we plug in "15" for "n" ; to obtain the "final value" —
                                                          which is the answer.
__________________________________________________
           →  As such:  " 2¹⁵ = 32,768 " .  (using scientific calculator online).
___________________________________________________
           →  The answer is:  " 32,768 " . 
___________________________________________________
3 0
3 years ago
Extinction is a naturally occurring phenomenon. scientists now worry more about extinctions because _____.
CaHeK987 [17]
<span>organisms cannot adapt faster than rates of extinction</span>
6 0
3 years ago
When the brain is unoccupied, an fmri indicates that blood continues to flow via a web of brain regions called the?
bulgar [2K]

Default network


When the brain is unoccupied, an fMRI indicates that blood continues to flow via a web of brain regions called the default network.

The default network is a web of brain regions that have activity that corresponds greatly with each other and different from other networks within the brain. The default network is active when an individual's attention is not concentrated on the external environment and it is measured with the functional magnetic resonance imaging technique (fMRI).



7 0
3 years ago
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