Explanation

The Watson-Crick model suggested that DNA replication is semi-conservative,

Meaning that each original DNA strand serves as a template to synthesize a new complementary strand,

This results in two DNA molecules, each containing one original strand and one newly synthesized strand. 

Explanation

Hepatitis is an inflammation of the liver caused by viral infections, toxins, or other factors.

Insomnia affects sleep, malaria is a parasitic infection of the blood, and kidney issues affect the kidneys.

Explanation

There are two main kinds of grasslands:

1. tropical 
2. temperate.

Examples of temperate grasslands include:

• Eurasian steppes
• North American prairies
• Argentine pampas

Example of Tropical grasslands include the"

• hot savannas of sub-Saharan Africa and Northern Australia.

Explanation

The sporophyte of Riccia is the simplest among bryophytes.

It consists of only a capsule, missing both foot and seta

It does not perform photosynthesis.

Additional informational:

Riccia belongs to the class Liver Worts.

They have dorsoventrally flattened lobed plant bodies with unicellular rhizoids.

The mature sporophyte of Riccia is a globular capsule, embedded within the gametophytic plant and is without foot and seta

Explanation

Reason: Sarcomeres are consist of two contractile proteins called myosin and actin, which bind during muscle contraction.

There are Six actin filaments surround each myosin filament, and each actin filament is surrounded by three myosin filaments.

This arrangement gives the muscles a striated appearance under magnification. 

Explanation

The essential components of infectious viral particles are nucleic acid (the genome) and protein.

Explanation

Nuclear fusion is the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy.

Explanation

Multiple ribosomes that are joined to the mRNA and contain developing polypeptide chains are known as polysomes.

Explanation

Centrosomes are membrane-free organelles that serve as main microtubule-organizing centres in distinct eukaryotic lineages. 

Explanation

The smallest gymnosperm is Zamia pygmia which reaches a height of 25 cm.