Where do phospholipids arrange themselves in a cell
- Inside the cytoplasm
- Inside the nucleus
- In the plasma membrane
- Inside the mitochondrial matrix
In sickle cell hemoglobin molecule, glutamic acid is replaced by:
- Valine
- Proline
- Glycine
- Glutamine
The head of some phages are icosahedral, which means that the head possess:
- 6 sides
- 10 sides
- 15 sides
- 20 sides
Aquatic mammals belong to the order:
- Chiropters
- Probosidea
- Cetacea
- Pholidota
Who formulated the principle that ontogeny recapitulates phylogeny:
- Von bear
- Haeckel
- Herbert spencer
- Darwin
Salmonella typhi causing typhoid and Clostridium tetani causing tetanus are which type of bacteria
- Comma
- Bacilli
- Cocci
- Spirilla
Mastication causes exocrine glands under the tongue and in the back of mouth to secrete a watery liquid called
- Bile
- Bolus
- Saliva
- Pancreatic juice
How many pieces of ribonucleic acid (RNA) make up the genome of influenza virus
- 8
- 4
- 10
- 6
Light reaction occurs in _____ the of chloroplast:
- Granum
- Stroma
- Inner membrane
- Outer membrane
Which one of the following factors does not affect the rate of enzyme action
- Water concentration
- Substrate concentration
- Enzyme concentration
- Temperature
