Scalar and Vector quantities are Distance and Displacement respectively.
Scalar Quantity is any quantity which has only magnitude but no direction.
It is as follows:
- Distance
- Speed
- Time
- Energy
- Density
- Volume
- Temperature
- Distance
- Work
- Mass
- Frequency
- Direct current
- Entropy
- Refractive index
- Charge
- Electric potential
- Luminous intensity
- Amount of substance
- Pressure
- Power
Vector Quantity is any quantity which has magnitude as well as direction.
It is as follows:
- Displacement
- Force
- Acceleration
- Weight
- Angular Momentum
- Light velocity
- Current
- Gravitational field
- Electric field
- Linear momentum
- Torque
- Polarization
- Centripetal force
- Tension
- Thrust
- Angle
- Drag force
- Impulse
- Alternating current
- Frictional force
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<h2>Cell Cycle
</h2>
Explanation:
Eukaryotes grow and divide by cell cycle.
The main parts of a cell cycle are an ordered series of events – Gap 1 or G1 phase, Synthesis or S phase, Gap 2 or G2 phase, and the mitosis or M phases.
Interphase period (G1, S, G2 phases) - cell grows by size, duplicates its content, replicates its DNA, and finally prepares for mitotic cell division
.
Mitosis and cytokinesis - formation of two identical daughter cells
Cell cycle is regulated by regulatory or restrictive checkpoints in the cell cycle which are activated with detection of a defective DNA.
Proliferation of undesired or cells with defective DNA like in case of tumor cells is controlled by the action of suppressing agents like p53 and cyclins.
The tumor suppressor gene protein p53 prohibits division of tumor cells. Cyclins regulate cell cycle by activation of the enzyme cyclin-dependent kinase.
In the spermatheca, females of many insect species, including honeybee queens, can store gametes secreted by their sex partners.
<h3>What is Spermatheca ?</h3>
The female insect's spermatheca is an ectodermal structure that receives, stores, and releases sperm for egg fertilization. According to the species, spermathecae differ in size and shape.
- They often come from the median oviduct, which is located close or on the genital chamber. A secretory duct called the ductus seminalis connects the spermathecal sac, also known as the receptaculum seminis, to the genital chamber, where the sperm are released.
- The number of spermathecas varies among taxa, however the majority of insects only have one. Depending on the species of insect, the spermatheca has different morphologies. The spermatheca is composed of the spermathecal gland, duct, and reservoir. Both of these fluids feed the sperm. Both the spermathecal glands and the male accessory glands secrete substances that feed the sperm.
So lastly we can say that, t females of many insect species, including honeybee queens, can store gametes shed by their mating partners in - the spermatheca.
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Answer:
AATGG
Explanation:
bcz A is in pair with T and C is in pair with G.
