Which of the following nucleotides is only found in RNA?

A. Nucleic acid, Protein

B. Monosaccharide

C. Amino and

D. Protein

Biological macromolecules are large organic molecules such as carbohydrates, lipids, nucleic acids, and proteins. They are built from smaller molecules, which are linked commonly by covalent bonds, and these can be broken down.

A.

B.

C.

D.

The inner lining of the uterus is the source of blood and mucosal tissue that is shed during menstruation.

A. 3' STOGUTCGCU

B. 5' AGCTAGCGT S

C. 3' SUCGAUCICA

D. 3' TCGATCGCA 5'

The complementary strand of DNA is formed by pairing complementary bases. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Additionally, RNA uses uracil (U) instead of thymine.

Given the sequence 5' AGCTAGCGT 3', the complementary strand would read:

3' TCGATCGCA 5'

A. Guanine

B. Thymine

C. Uracil

D. Adenine

Uracil is the nucleotide that is only found in RNA. The other nucleotides are found in both DNA and RNA

A. To measure the oxygen levels at high elevation

B. To assess why the earlier expedition failed

C. To show that modem technology makes climbing safer

D. To identify routes that can be explored in future climbs

The experienced mountain climber is replicating the conditions of the past expedition to understand why that earlier attempt was unsuccessful.

A. Until disproved, an exploration for an observation is valid

B. A hypothesis that has not been falsified remains provisional

C. Certain concepts cannot be subjected to direct experimentation

D. Proving a hypothesis exempt from further testing

This means that a hypothesis is considered valid until it is disproved by experimental evidence. However, even if a hypothesis has not been falsified, it is still considered provisional and subject to further testing and scrutiny.

A. Passive transport using carrier proteins

B. Conversion to carbon monoxide

C. Active transport using energy

D. Diffusion down a concentration gradient

Most of the carbon dioxide from the blood moves into the alveoli through the process of diffusion down a concentration gradient. In the lungs, there is a higher concentration of carbon dioxide in the blood compared to the alveoli. Its molecules, therefore, move from an area of higher concentration (blood) to an area of lower concentration (alveoli) until equilibrium is reached. This is a passive process and does not require energy or carrier proteins.

A. Psoriasis

B. Brucellosis

C. Olkunginys

D. Dengue

Psoriasis is a chronic skin condition that causes red, scaly patches on the skin. It is not contagious, and it is not caused by any microorganism. It is believed to be an autoimmune disorder where the immune system attacks healthy skin cells.

A. A-1,2-1

B. A-1,2+1

C. A,2-1

D. A+1,2-1

This is because when a proton is emitted from an atom, the atomic mass decreases by one unit, and the atomic number decreases by one unit. The atomic mass is the sum of protons and neutrons in the nucleus, and the atomic number is the number of protons in the nucleus. Therefore, if a proton is lost, both numbers decrease by one.

A. Digestive

B. Excretory

C. Circulatory

D. Endocrine

The digestive system breaks down complex food substances into small and less complex absorbable compounds. Proteins, for instance, are broken down to constituent amino acids through a digestion process that combines mastication and enzymatic breakdown.