BIOLOGY HIGH SCHOOL

Which of these is not a component of saliva?A. lysozyme
B. a cyanide compound
C. defensins
D. nitric oxide

Answers

Answer 1
Answer:

Option (D.) Nitric oxide is not a component of saliva.

Components of human saliva -

  • Saliva mainly consists of three types - Serous, Mucous and Mixed types which are secreted by different salivary glands.
  • It is composed of water, mucus, proteins, mineral salts and amylase.
  • Saliva consists of lysozyme which participates in the host non-immune defense against bacteria
  • Defensins helps in protecting the mouth oral cavity from viruses which enters through the mouth.
  • Defensins and lysozyme also maintains the steady state equilibrium of the oral cavity environment.
  • The cyanide compound is also present in the saliva which regulates the urea content balance in the mouth.

Thus Option D. nitric oxide can't be present in saliva as all the other component are present in human saliva.

To learn more about human saliva, refer -

brainly.com/question/3312656

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Answer 2
Answer: The answer is D. nitric oxide.

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According to the Nutrition Facts panel on a box of granola bars, a single bar provide 5 grams of fat, 19 grams of carbohydrate, and 7 grams of protein. After working out, Carter ate 3 of the granola bars. Calculate the number of kcal he consumed by eating the 3 bars.

Answers

The number of kcal he consumed by eating the 3 bars is 447 calories

Calculation of a number of kcal:

We know that

1 gram of fat is 9 calories

1 gram of carbohydrate is 4 calories

1 gram of protein is 4 calories

So,

In one granola bar:

5 grams of fat = 5 x 9 = 45 calories

19 gram of carbohydrates = 19 x 4 = 76 calories

7 grams of protein = 7 x 4 = 28 calories

So,

total = 45 + 76 + 28 = 149 calories

Now

If Carter ate 3 granola bars so 149 x 3 = 447 calories

Learn more about the fat here: brainly.com/question/24765487

Answer:

447 calories

Explanation:

1 gram of fat is 9 calories

1 gram of carbohydrate is 4 calories

1 gram of protein is 4 calories

In one granola bar:

5 grams of fat = 5 x 9 = 45 calories

19 gram of carbohydrates = 19 x 4 = 76 calories

7 grams of protein = 7 x 4 = 28 calories

for a total of 45 + 76 + 28 = 149 calories

If Carter ate 3 granola bars then 149 x 3 = 447 calories

23. How many total chromosomes are in a germ cell in the testis of this organism that is in Metaphase of Meiosis II?

Answers

There are 46 chromosomes in each cell at metaphase II in meiosis in humans. Normal human body cells each have 46 chromosomes. Prior to meiosis, the DNA replicates and each cell gets 92 chromosomes.

Final answer:

A germ cell in the testis in Metaphase II of Meiosis has 23 chromosomes.

Explanation:

In Metaphase II of Meiosis, the chromosomes line up at the equator of the cell and are ready to be separated into two daughter cells. Each daughter cell will receive half the number of chromosomes as the parent cell. In humans, the diploid number of chromosomes in a somatic cell is 46, while the haploid number of chromosomes in a germ cell is 23.

Therefore, in Metaphase II of Meiosis, a germ cell in the testis would have 23 chromosomes.

Learn more about total chromosomes in a germ cell in metaphase of meiosis ii here:

brainly.com/question/34099430

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. How are starch and glycogen related? Both starch and glycogen give wood its strength. Humans store the energy from starch as glycogen. Both starch and glycogen can be digested only by cows. Plants store the energy from starch as glycogen.

Answers

humans store the energy from starch as glycogen gradpoint answer

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Answers

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Answers

Of course not! There's lots of ways materials can enter. It also depends on the cell; whether it has cell wall and cell membrane or only cell membrane.

Besides diffusion, there's also osmosis and active transport.

If the cell has only cell membrane, it means it's partially permeable, which means osmosis can happen.

*hope this helps :)

active transport performs which function in a cell, packages protein for export from the cell? Packages proteins for export from the cell, distributes enzymes throughout the cytoplasm, moves substances against a concentration gradient, equalizes the concentration of water inside and outside the cell

Answers

Well active transport absolutely moves substances against their concentration gradient (answer C), although I dislike how the other answers could probably be argued for. This seems to be a case of pick the "best" answer
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