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
shusha [124]
3 years ago
7

The birds that were eating at the bird feeder initially flew away when the shadow of Charlie’s kite passed over the feeder. Howe

ver, after Charlie had been flying the kite for 15 minutes, the birds had all returned and didn’t stop feeding when the kite passed overhead. The birds’ change in responsiveness illustrates the learning process known as:
a.sensitization
b.habituation
c.second-order conditioning
d.negative reinforcement
Biology
1 answer:
Igoryamba3 years ago
6 0

Answer:

B

The birds became used to the kite, and realized that it wasn't a threat.

You might be interested in
The cross of an aa male and Aa female produced an offspring with the genotype AAa. Therefore, the resulting offspring has 3 copi
creativ13 [48]

Answer:

The correct answer is option d.

Explanation:

Based on the given question, the genotype of the male parent is aa, the genotype of the female parent is Aa, and the genotype of the offspring is AAa, showing trisomy characteristics. In the given case, the existence of two A chromosomes shows that the chromosomes non-disjunction at the time of gametogenesis have taken place in the female as she is the only one possessing A allele. Hence, it can be concluded that the disjunction is maternal in characteristic.  

The duplication of chromosomes takes place at the time of the S-phase of meiosis. Thus, after going through S-phase, the karyotype of the cell will be AAaa (maternal gametogenesis), this set of the chromosome is termed as homologous pair, and the pair of AA or aa is termed as sister chromatids.  

The meiotic disjunction takes place in two phases. First, in meiosis I disjunction, in this separation of homologous chromosomes takes place, that is, the maternal cell AAaa get differentiated into aa and AA daughter cells. Secondly, in meiosis II disjunction, the separation of sister chromatids takes place into two independent chromosomes, that is, the formation of two cells each comprising chromosome A from the AA cell and the formation of two cells each with chromosome a from the aa cell.  

Thus, the phenomenon of non-disjunction would have taken place at the time of meiosis II in the case of a female gamete to exhibit two A chromosomes. Hence, the correct answer is option d.  

4 0
3 years ago
Which of the following statements correctly describes some aspect of ATP hydrolysis being used to drive the active transport of
saw5 [17]

Answer:

B) This is an example of energy coupling

Explanation:

Energy coupling is a process by which cells carry out thermodynamically unfavorable, endergonic (energy-requiring) reactions to other exergonic (reactions that liberate free energy) reactions.

Reactions which are endergonic do not occur spontaneously as they result in a decrease in entropy and a positive free energy change, ∆G.

Exergonic reactions occur spontaneously as they result in an increase in entropy and have a negative free energy change, ∆G.

For example, the active transport of ions against their concentration gradients in cells is a non-spontaneous endergonic process which is coupled to the hydrolysis of ATP, an exergonic process in other for the reaction to proceed. ATP hydrolysis phosphorylates an amino acid side chain in the transport protein which then drives the forward process of transport of the ion.

Considering the above,

Option A: The hydrolysis of ATP is endergonic, and the active transport is exergonic is false because ATP hydrolysis is exergonic while active transport is endergonic.

Option B: This is an example of energy coupling is true.

Option C: Both ATP hydrolysis and active transport are spontaneous because they result in an increase in entropy of the system is false because only ATP hydrolysis is spontaneous

Option D: Neither ATP hydrolysis nor active transport is spontaneous is false because ATP hydrolysis is spontaneous.

Option E: ATP is acting as a transport protein to facilitate the movement of the ion across the plasma membrane is false because ATP is not a protein, rather it serves to activate the transport protein by phosphorylating it.

8 0
3 years ago
The gi bill allowed Native American to ?
Igoryamba

Officially the Servicemen's Readjustment Act of 1944, the G.I. Bill was created to help veterans of World War II. It established hospitals, made low-interest mortgages available and granted stipends covering tuition and expenses for veterans attending college or trade schools.

3 0
3 years ago
How does crossing over affect evolution?
Free_Kalibri [48]
<em>crossing-over affect evolution...
<u>reason:
</u>during crossing-over chromosomes exchange their genetic information...
because of this variations occur in new generation,, in new generation some characters are from maternal chromosomes and some are from paternal chromosomes... </em>
5 0
3 years ago
What method would be best for scientists to use to determine the absolute age of a Precambrian igneous rock
GaryK [48]
One method I know of is comparing a sample of the rock to other samples which the scientist already knows the age of. I forgot what this method is called but I know it's used by lazy scientists that use other scientist findings like the age of a rock to compare to their own work
4 0
3 years ago
Other questions:
  • The first organism in a food chain is always a(n)
    9·1 answer
  • Can you help with this:<br> Thank you
    9·1 answer
  • Which skeletal system does the humerus belong to?
    14·1 answer
  • Describe Hemopure and explain how it is used.
    10·2 answers
  • To support his hypothesis of continental drift, Alfred Wegener did NOT use
    12·1 answer
  • Describe the environmental advantages and disadvantages of using hydroelectric power to generate electricity in the UK.
    12·1 answer
  • Please and thank you !
    12·2 answers
  • Pls help!!!
    15·1 answer
  • How does frshwater ecosystems help with flood conrol
    12·1 answer
  • Cells that undergo meiosis also spend their lives in interphase, like somatic cells.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!