Recently Active Biology Questions

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

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

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... ...

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

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

What are some examples of human cells that produce proteins for exportation? ...

can anyone please explain menstrual cycle to me? thank you! ...

Meena and Hari observed and animal in their garden. Hari called it an insect while Meena said it was an earthworm. Choose the character from the following which confirms that it is an insect. (a) body rounded (b) body with jo ...

Is there any open circulatory system in the human body? ...

why 0-is a universal donor but not o+...???? ...

I am recently stumbling with a question. Can you please help me? A brown-eyed man produces with a woman offsprings in the ratio 1:1.(ie brown-eyed : blue-eyed).Predict the genotype of the mother. In this case,brown eyes is do ...

When someone touches my head I can feel the touch. This means there are nerves below our scalp. These nerves are called cranial nerves. OK. Bot are there holes in the cranium for these nerves??? Thanx in advance ...

Is adrenalin secreted due to impulses from the Sympathetic Nervous System?? ...

we know that banana is not a fruit.what is it,which part of a tree???? ...

please tell me a name of a growth retardant hormone. ...

what is the main function of varnalin???? ...

Post you biology questions in this section :) ...

The presence of feathers and power of flight are the characteristic features of (a) mammalia (b) reptilia (c) aves (d) amphibia ...

Why are lysosomes called the suicidal bags of the cell ...

Which of the following pairs belong to the category of cold blooded animals? (a) snakes and birds (b) bats and rats (c) frog and snakes (d) birds and monkey ...

Organisms without nucleus and cell organelles belong to (i) fungi (ii) protista (iii) cyanobacteria (iv) archaebacteria (a) (i) and (ii) (b) (iii) and (iv) (c) (i) and (iv) (d) (ii) and (iii) ...

Which of the following pairs of diseases is caused by virus? (a) rabies, mumps (b) cholera, tuberculosis (c) typhoid, tetanus (d) AIDS, syphilis ...

A characteristic feature of cardiac muscle is its (a) fatigue (b) rhythmicity (c) spindle shape (d) all of the above ...

For each characteristic given below, name the corresponding phylum: (a) body segmented and jointed legs, with compound eyes (b) body having calcareous shell and ventral foot (c) spiny skinned organisms ...

The information given below refers to the hormone (i) secreted by endocrine glands located on top of kidneys (ii) converts glycogen into glucose (iii) helps the body to adjust to stress (a) adrenaline (b) insulin (c) progeste ...

Water reabsorption mainly occurs through (a) Bowman's capsule (b) Proximal convoluted tubule (c) Loop of Henle (d) Distal convoluted tubule and collecting tubules ...

Choose the wrong statement (a) the nature of matrix differs according to the function of the tissue (b) fats are stored below the skin and in between the internal organs (c) epithelial tissues have large intercellular spaces ...

Which of the following remains absent in prokaryotes? (a) nuclear membrane (b) ribosome (c) cell wall (d) cell membrane ...

'Lock jaw' is another name of: (a) malaria (b) kala-azar (c) tetanus (d) diptheria ...

The reason why some mutations, which are harmful, do not get eliminated from the gene pool is that (a) they are recessive and carried by heterozygous individuals (b) they are dominant and show up more frequently (c) genetic d ...