Frequent Biology Questions

what is the average thickness of plasma membrane? a. 100-150 aμ b.75-100 aμ c.60-75 aμ d.75-100 aμ ...

I am doing a project on the GERL system. what are the various subtopics on which I should write? ...

______ begins when the chromosomes arrive at the spindle poles. a) Prophase b) Metaphase c) Anaphase d) Telophase ...

Which of the following matches is incorrect? a) Organelle Function Presence (a) Ribosome secretion of enzymes plant and animal cell b) (b) Mitochondria site of respiration animal cell only c) (c) Chloroplast storage of cell s ...

The property of being able to perceive changes in the environment and react is a) Organization b) Spontaneity c) Sensitivity d) Homeostasis ...

In the Vedas of class IX, i has been said that light saturation occurs at 10% of the full sunlight. But in the Chakravyuh test analysis, it is said that the percentage of light energy fixed in photosynthesis is generally arou ...

What is the GERL system. Could someone please suggest a site on which i can find lots of info about it? Thanks in advance. ...

In a cell with 4 chromosomes, how many sister chromatids are visible during telophase? a) 0 b) 8 c) 4 d) 16 ...

Which of the following receives oxygenated blood from the lungs? a) Right atrium b) Left atrium c) Right ventricle d) Left ventricle ...

what are lipoproteins? ...

If anyone is able to help me out,I will be very glad. I can't answer some questions on my own. Name the following :- 1) The fully developed part of ovary containing a mature egg. 2) Inner membranous layer covering brain and s ...

Viruses are made of a) Lipoprotein b) Glycosides c) Nucleoprotein d) Lipids ...

The lungs are enclosed by a double-layered membrane which is called a) Pleura b) Bronchi c) Pericardium d) None of the above ...

24)Which of the following statements is/are true regarding cell structure? (i) The nucleoplasm and the cytoplasm together make up the protoplasm (ii) Chloroplasts are type of plastids, which occur in plant cells (iii) In many ...

How do flies and other insects walk up walls without falling? ...

1. a) analogous organs indicate ---------- evolution. b) --------were functional in ancestors but are rudimentary in modern descendants. 2.under which category does it lies..??? homologous or analogous..??? a) potato and runn ...

Are cardiac muscles striated? ...

when the gametes fuse to form the zygote...both the male n the female gametes, they contribute half the genetic material...do they contribute half their chromosomes..???....i don't think so...n if they do not contribute then ...

i m confused with the order of the outer layers of the eyes... SCLERA CORNEA CONJUNCTIVA... which 1 comes the first...can some1 arrange it inn right order... thnks in advance... :) ...

what is the function of the androgen that is being secreted by the "leydig cells"?? ...

the lacrimal glands in our eyes...secrete a lubricating liquid each time we blink our eyes...one reason for the nessecity of this fluid is that it keeps our eyes moist...so..why do we require to keep our eyes moist..???? ...

Blood group A has antigen A and antibody anti B. Blood group O has no antigen. If blood group A is given to a person having blood group O, antibodies (anti A) develop in the person and hence, clumping occurs. But, if O is giv ...

y do v feel sleepy after a heavy diet...??? ...

are antigens similar to that of pathogens that attack our body...???...means are they harmful....?????..because they induces the immune system of our body to produce antibody... ...

Why does the skin of a person gets bluish during vasoconstriction? ...

What is the function of ear lobes? ...

While fever why only the sole stays cool? ...

Why tears come out of our eyes when we are very upset? ...

Why does sebaceous gland produce more sebum during adolescence? ...

Which cytoplasmic organelle is expected to be well-developed and abundant in those cells? ...