Video Lectures for NEET
Video Lectures for NEET - Biology - Class 11- Cell Cycle and Cell Division
Video Lectures for NEET
- The sequence of processes by which a cell repeats its genome, synthesizes the other parts of cells and eventually splits into two daughter cells is called cell cycle.
- DNA synthesis happens in one specific stage of cell division while distribution of chromosome in cells occurs in complex series of processes during cell division.
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Video Lectures for NEET - Biology - Class 11- Mitosis-Cell Cycle and Division
Video Lectures for NEET
- The cell cycle consists of cell growth, DNA replication, and cell division.
- Events occurring during the cell cycle are genetically determined.
- The duration of the cell cycle varies between organisms and cell types. The average length of a human cell cycle is 24 hours, while a yeast cell finalizes 1 cell cycle in 90 minutes.
Video Lectures for NEET - Biology - Class 11- Meiosis
Video Lectures for NEET
Meiosis is a process of cell division that creates four gamete cells and halves the chromosome number in the parent cell. This procedure is necessary for the development of egg and sperm cells for sexual reproduction.
Video Lectures for NEET - Biology - Class 11- Breathing and Exchange of Gases
Video Lectures for NEET
- Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out.
- Diffusion of gases (O2 and CO2) across alveolar membrane.
- Transport of gases by the blood.
- Diffusion of O2 and CO2 between blood and tissues.
Video Lectures for NEET - Biology - Class 11- Human Respiratory System
Video Lectures for NEET
Human Respiratory System is a network of organs and tissues that helps us breathe. The primary function of this system is to introduce oxygen into the body and expel carbon dioxide from the body.
Video Lectures for NEET - Biology - Class 11- Mechanism of Respiration
Video Lectures for NEET
The respiratory mechanism is a way of controlling how much carbon dioxide is in the blood. Elevating arterial CO2 or decreasing pH increases the rhythmic stimulation of the respiratory muscles by the medulla. Normally control of CO2 is based on the rate and depth of ventilation.
Video Lectures for NEET - Biology - Class 11- Human Respiratory System
Video Lectures for NEET
- Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out.
- Diffusion of gases (O2 and CO2) across alveolar membrane.
- Transport of gases by the blood.
- Diffusion of O2 and CO2 between blood and tissues.
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Video Lectures for NEET - Biology - Class 12- Sexual Reproduction in Flowering Plants - I
Video Lectures for NEET
- Flowers are the site of sexual reproduction in flowering plants. …
- Stamen is the male reproductive unit of angiosperm. …
- Anther is a bilobed structure with each lobe having two theca, therefore called dithecous.
Video Lectures for NEET - Biology - Class 12- Sexual Reproduction in Flowering Plants - II
Video Lectures for NEET
- Flowers are the site of sexual reproduction in flowering plants. …
- Stamen is the male reproductive unit of angiosperm. …
- Anther is a bilobed structure with each lobe having two theca, therefore called dithecous.
Video Lectures for NEET - Biology - Class 12-Sexual Reproduction in Flowering Plants - II
Video Lectures for NEET
- Flowers are the site of sexual reproduction in flowering plants. …
- Stamen is the male reproductive unit of angiosperm. …
- Anther is a bilobed structure with each lobe having two theca, therefore called dithecous
Video Lectures for NEET - Biology - Class 12- Sexual Reproduction in Flowering Plants - IV
Video Lectures for NEET
- Flowers are the site of sexual reproduction in flowering plants. …
- Stamen is the male reproductive unit of angiosperm. …
- Anther is a bilobed structure with each lobe having two theca, therefore called dithecous.
Video Lectures for NEET - Biology - Class 12- Development of Dicot Embryo
Video Lectures for NEET
The zygote divides transversely to form a two-celled proembryo. The cell towards the micropyle is known as the basal cell and the other is known as terminal cell. The zygote divides transversely to form a two-celled proembryo.
Video Lectures for NEET - Biology - Class 12-Human Reproduction
Video Lectures for NEET
Humans are sexually reproducing and viviparous. The reproductive events in humans include formation of gametes (gametogenesis), i.e., sperms in males and ovum in females, transfer of sperms into the female genital tract (insemination) and fusion of male and female gametes (fertilization) leading to formation of zygote.
Video Lectures for NEET - Biology - Class 12- Human Reproductive System
Video Lectures for NEET
The human reproductive system includes the male reproductive system which functions to produce and deposit sperm; and the female reproductive system which functions to produce egg cells, and to protect and nourish the fetus until birth. Humans have a high level of sexual differentiation.
Video Lectures for NEET - Biology - Class 12- Human Reproduction - Hormonal Control
Video Lectures for NEET
The human male and female reproductive cycles are controlled by the interaction of hormones from the hypothalamus and anterior pituitary with hormones from reproductive tissues and organs. In both sexes, the hypothalamus monitors and causes the release of hormones from the pituitary gland.
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