After meiosis I, the resultant daughter cells have

1. same amount of DNA as in the parent cell in S
2. twice the amount of DNA in comparison to haploid
3. same amount of DNA in comparison to haploid gamete
4. four times the amount of DNA in comparison to haploid gamete

Subtopic:  Cell Cycle: Meiosis I |
From NCERT
NEET - 2019
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Which of the following organic compounds is the main constituent of Lecithin?

1. Arachidonic acid

2. Phospholipid

3. Cholesterol

4. Phosphoprotein

Subtopic:  Lipids | Introduction | Lipids: Glycerolipids, Phospholipids & Glycerol |
 84%
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The main difference between active and passive transport across cell membrane is :

1. passive transport is non-selective whereas active transport is selective
2. passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes.
3. passive transport is confined to anionic carrier proteins whereas active transport is confined to cationic channel.
4. active transport occurs more rapidly than passive

Subtopic:  Diffusion | Membrane Transport |
 77%
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Match the items given in Column - I with those in Column - II and choose the correct option:

Column-I

Column-II
(a) Rennin (i) Vitamin B12
(b) Enterokinase (ii) Facilitated transport
(c) Oxyntic cells (iii) Milk proteins
(d) Fructose (iv) Trypsinogen

Options: (a) (b) (c) (d)
1. iii iv ii i
2. iv iii i ii
3. iv iii ii i
4. iii iv i ii

Subtopic:  Gastric Secretions | Intestinal Secretions |  DIGESTION OF FOOD |
 88%
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Kwashiorkor disease is due to:

1. simultaneous deficiency of proteins and fats
2. simultaneous deficiency of proteins and calories
3. deficiency of carbohydrates
4. protein deficiency not accompanied by calorie deficiency

Subtopic:  Protein Energy Malnutrition |
 75%
From NCERT
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Select the correct sequence of events.
 

1. Gametogenesis  → Gamete transfer  → Syngamy  → Zygote  → Cell division (Cleavage)  → Cell differentiation  → Organogenesis
2. Gametogenesis  → Gamete transfer → Syngamy  → Zygote  → Cell division (Cleavage) → Organogenesis  → Cell differentiation
3. Gametogenesis  → Syngamy  → Gamete transfer  → Zygote  → Cell division (Cleavage)  → Cell differentiation  → Organogenesis
4. Gametogenesis  → Gamete transfer  → Syngamy  → Zygote  → Cell differentiation  → Cell division (Cleavage)  → Organogenesis
Subtopic:  Events during Sexual reproduction |
 81%
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NEET - 2019
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Among the following, which hydrolysis reaction occurs at the slowest rate?

1. 
2. 
3. 
4. 
Subtopic:  Mechanism of Reactions |
 65%
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Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?

1. Estrogen 2. Prolactin
3. Oxytocin 4. Relaxin
Subtopic:  Prolactin & Posterior Pituitary |
 88%
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The vapor of secondary alcohol passed over heated copper at 573 K yield:
 

1. A carboxylic acid 2. An aldehyde
3. A ketone 4. An alkene
Subtopic:  Alcohols: Preparation & Properties |
 79%
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No new follicles develop in the luteal phase of the menstrual cycle because :

1.  Follicles do not remain in the ovary after ovulation
2.  FSH levels are high in the luteal phase
3.  LH levels are high in the luteal phase
4.  Both FSH and LH levels are low in the luteal phase
Subtopic:  Menstrual Cycle: Luteal Phase |
 70%
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