Explanation

Annelids do have a closed circulatory system, along with other invertebrates and vertebrates

Annelids, like earthworms, have a closed circulatory system.

In annelids, blood is pumped along by muscles in blood vessels.

The blood picks up food molecules from the digestive tract and oxygen from the skin.

It then transports these to the cells of the body. 

Explanation

The Fast Breeder Test Reactor is a 40MWt/ 13.6 MWe, loop-type, sodium-cooled fast reactor using a mixture of:

Plutonium carbide and uranium carbide as the fuel.

Explanation

oxygen is delivered by the bulk flow of blood (flow = Q) to the exchange vessels (i.e., capillaries) by virtue of its presence in the blood at concentration [O2]a

increasing blood flow will increase the delivery of oxygen via the blood to the tissues.

ND-7-5-2023

Explanation

Maximum molar volume is at 127°C and 1 atm = 32.84 L

Explanation

The fertile time in the menstrual cycle is typically considered to be 9–15 days,

Especially for individuals with a 28-day cycle, with the most fertile days being around ovulation

Which occurs around day 14 of a 28-day cycle.

However, the fertile window can vary depending on the length of the menstrual cycle and individual factors.

Encompassing the days leading up to ovulation and the day of ovulation 

Itself, as sperm can live for several days in the female reproductive tract, while the egg lives for about 24 hours. 

Explanation

After the removal of both ovaries, the hormone that significantly decreases is estrogen. 

The ovaries are the primary source of estrogen in the female body, so when they are removed, estrogen levels drastically drop. 

Explanation

If A · B = 0, it means the vectors A and B are perpendicular.

The magnitude of the cross product is:

|A × B| = |A||B|sinθ

For perpendicular vectors, θ = 90°, so sin(90°) = 1

⇒ |A × B| = AB × 1 = AB

Explanation

A virus is an obligate intracellular parasite. 

Obligate intracellular parasite:

This means a virus must live inside a host cell to replicate and survive.

Viruses lack the necessary machinery to produce proteins or generate energy on their own, so they rely on the host cell's resources. 

Explanation

The assembly of the 40S and 60S subunits of the ribosome creates an 80S unit. 

80S unit:

This is the complete functional ribosome in eukaryotic cells, composed of the smaller 40S subunit and the larger 60S subunit. 

Explanation

Research articles and patents mention Sam1 in the context of Streptococcus pyogenes.

Specifically, some studies discuss a strain of S. pyogenes (JRS4) and an isogenic protein  F-derivative of JRS4, both associated with Sam1.