Top answers

Explain the adaptations of cacti to their environment

Extensive root systems allow for maximum uptake of available water from the ground. Low surface area to volume ratio reduces the rate of evapotranspiration, alongside a thick waxy cuticle covering the surfac...
LB
Answered by Lewis B. • Biology tutor
8764 Views

What is osmosis? (GCSE question)

Osmosis is the movement of water from an area of high concentration to an area of low concentration across a semi-permeable membrane. A semi-permeable membrane acts like a barrier that allows only small mole...
AT
Answered by Arabella T. • Biology tutor
7104 Views

Describe how the origin of living systems is explained by natural processes. Please provide supporting evidence for hypotheses.. Sp

Numerous experimental investigations have been conducted to explain the diversity and unity of life. Specifically, these models have aimed to provide evidence that the conditions of early Earth provided an e...
RS
Answered by Ruth S. • Biology tutor
1952 Views

What is transcription?

Transcription is the process of sections of DNA being converted into mRNA (messenger RNA) that occurs in the nucleus of a cell. DNA is made up of a template strand and a coding strand which are complementary...
CM
Answered by Carolina M. • Biology tutor
5110 Views

Sandeep has been fasting and is not drinking water during the daytime. Name the hormone and explain the sequence of events involving this hormone, that occur during the day to maintain Sandeep's water balance.

ADH (Anti-diuretic hormone). First his blood plasma becomes more concentrated. This is detected by receptors in the hypothalamus which stimulates the pituitary gland to secrete ADH. ADH enters the blood stre...
NB
Answered by Nathan B. • Biology tutor
2824 Views