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REY [17]
3 years ago
11

Complete the following sentences.

Biology
2 answers:
djyliett [7]3 years ago
7 0
1. The appearances of fireflies at dusk is an example of a circadian rhythm because it's happens daily. The correct option among all the options that are given in the question is the third option or option "c".

2. During migration, animals undertake a seasonal movement. The correct option among all the options that are given in the question is the first option or option "a".
DerKrebs [107]3 years ago
4 0

Answer:

1. Option C

2. Option A

Explanation:

1. A circadian rhythm is basically a cycle of processes (physiological, chemical, and behavioral) that repeats itself after every twenty four hours or in other word it occurs daily. Some of the common examples of circadian rhythm are -  

a) Cycle of sleep and wake

b) Cycle of food digestion etc.

The appearance of fireflies at dusk is an event that happens every day and hence it is a circadian rhythm.

2. Almost all the migrating animals migrate based on the season. For instance, birds migrating long distance are travelling to cope up with the seasonal changes. For instance, some of these birds breed in temperate or Arctic during the summer season and during autumn season they return back to the warm south regions

You might be interested in
How many calories are in an average trick-or-treaters halloween stash?
Vera_Pavlovna [14]

The number of calories on a Halloween stash depends on the type of candies and the number of units of each. If the stash contains 5 units of each of these candies: chocolate bars, taffies, lollypops, and candy corn the total number of calories is 1,650.

Calories are the most common unit used to define the energy a specific food gives to your body. For example, an apple has 52 calories, while a banana has 89 calories.

Considering this, in a Halloween stash the calories depend on two factors:

  • The types of candies or products
  • The units of each one

Let's suppose there are 5 units of each of the following candies:

  • Chocolate bars
  • Taffies
  • Lollypops
  • Candy corn

Let's now calculate the calories

  • Chocolate bars = 220 calories x 5 units =  1,100 calories
  • Taffies = 20 calories x 5 units = 100 calories
  • Lollypops = 83 calories x 5 units = 415 calories
  • Candy corn = 7 calories x 5 = 35 calories

Add all the previous results:

1,100 + 100 + 415 + 35 = 1,650 calories in total

Learn more in brainly.com/question/22374134

8 0
3 years ago
In garden peas, tallness (T) is dominant to shortness (t) and axial flowers (A) are dominant to terminal flowers (a). What are t
Delicious77 [7]

Answer:

The correct answer is explained below:

Explanation:

  • According to the question, heterozygous tall, heterozygous axillary plant has the following genotype, TtAa.
  • It produces the following gametes: TA, Ta, tA, ta.
  • The heterozygous tall, terminal plant has the following genotype: Ttaa
  • It produces the following gametes: Ta, ta.
  • Crossing them,

           TA                       Ta                     tA                        ta

Ta      TTAa                   TTaa                 TtAa                   Ttaa

     (Tall, Axillary)    (Tall, Terminal)    (Tall, Axillary)    (Tall, Terminal)

ta       TtAa                    Ttaa                  ttAa                   ttaa

     (Tall, Axillary)     (Tall, Terminal)   (Short, Axillary)  (Short, Terminal)

  • The genotypes of the offspring obtained are: TTAa, TTaa, TtAa, Ttaa, ttAa and ttaa respectively.
  • The phenotypes obtained are:
  1. Tall, Axillary = 3.
  2. Tall, Terminal = 3.
  3. Short, Axillary = 1.
  4. Short, Terminal = 1.
8 0
3 years ago
Compute A population of 100 flowering plants contains 60 plants that are homozygous for orange flowers (OO), 30 plants that are
netineya [11]
O allele 60 + 60+30 = 150
o allele 
30 + 10+10 = 50
O allele frequency = 150/200 = 0.75
Thus, the O allele frequency is 3/4 or 0.75
o allele frequency = 50/200 = 0.25
The o allele frequency is 1/4 or 0.25

5 0
3 years ago
What is the final product of DNA transcription?
Alex73 [517]

D. Complementary strands of mRNA

In transcription, RNA is made from RNA.

4 0
3 years ago
Read 2 more answers
Polar covalent, non polar covalent, ionic, hydrogen, peptide in rank of strength
Airida [17]

Answer:

The order of bonds in increasing order of bond strength would be Ionic, peptide, polar covalent, non-polar covalent hydrogen bond.

Ionic bonds are the strongest bonds which are formed by transferring of valence electrons between different atoms. For example, a bond between sodium and chlorine atoms in NaCl.

A peptide bond is a type of covalent bond formed between a carboxylic group of one amino acid and the amino group of another amino acid. It is provided with extra stability through resonance.

A covalent bond is a type of bond which is formed by the sharing of electrons between two atoms.

They bond strength of these bonds is less than that of ionic bonds and more than that of hydrogen bonds.

Hydrogen bonds are weak bonds formed through electrostatic interactions between a proton present in one molecule and an electronegative atom in another molecule.

8 0
3 years ago
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