Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
The reproductive cycle in female primates is known as the:
The reproductive cycle in the female primates (e.g. monkeys, apes and human beings) is called menstrual cycle. (Refer to paragraph 3, page 33).
What is the term for the first menstruation, which begins at puberty?
The first menstruation begins at puberty and is called menarche. (Refer to paragraph 3, page 33).
During which phase of the menstrual cycle do the primary follicles in the ovary grow to become a fully mature Graafian follicle?
The menstrual phase is followed by the follicular phase. During this phase, the primary follicles in the ovary grow to become a fully mature Graafian follicle. (Refer to paragraph 2, page 34).
What is the typical average interval for the repetition of the menstrual cycle in human females?
In human females, menstruation is repeated at an average interval of about 28/29 days. (Refer to paragraph 3, page 33).
Which of the following describes the correct order of layers in the cell envelope of most prokaryotic cells, from outermost to innermost?
The NCERT text states: 'The cell envelope consists of a tightly bound three layered structure i.e., the outermost glycocalyx followed by the cell wall and then the plasma membrane.' Therefore, the correct order is Glycocalyx, Cell wall, Plasma membrane.
Which component of the bacterial cell envelope is responsible for the classification of bacteria into Gram-positive and Gram-negative?
The NCERT states: 'Bacteria can be classified into two groups on the basis of the differences in the cell envelopes and the manner in which they respond to the staining procedure developed by Gram viz., those that take up the gram stain are Gram positive and the others that do not are called Gram negative bacteria.' The cell wall's composition significantly impacts Gram staining.
If a bacterium possesses a thick and tough glycocalyx, it is specifically referred to as a:
According to the provided text: 'Glycocalyx differs in composition and thickness among different bacteria. It could be a loose sheath called the slime layer in some, while in others it may be thick and tough, called the capsule.'.
Although each layer of the prokaryotic cell envelope performs distinct functions, they collectively act as:
The text explicitly states: 'Although each layer of the envelope performs distinct function, they act together as a single protective unit.'
Which of the following statements about mycoplasma is correct?
The NCERT text states: 'prokaryotes have a cell wall surrounding the cell membrane except in mycoplasma.' This indicates that mycoplasma is a prokaryote without a cell wall.
The Gram staining procedure differentiates bacteria based on differences in their:
The text mentions: 'Bacteria can be classified into two groups on the basis of the differences in the cell envelopes and the manner in which they respond to the staining procedure developed by Gram...'. Therefore, the cell envelope structure is key.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.