Answer: The main steps of digestion in human are ingestion, digestion, absorption, assimilation and excretion
Explanation:
Ingestion is the process where food is taken into the body through the mouth.
Digestion is the process by which the food is broken down into nutrients and waste. This take place in the stomach and small intestine.
Absorption is the process where the separated nutrients is absorbed in the blood.
Assimilation is the process where the absorbed nutrients is utilized by the body tissues and cells
Excretion is the process where the undigested waste is expelled out from the body through the anus.
b. cellular respiration
c. diffusion
d. gas exchange
Do they lay eggs on their back?
Are they a good pet?
Why or Why Not?
Answer:
There will be 23 chromosomes in a sperm cell, 23 chromosomes in an egg cell, and 46 chromosomes in a white blood cell
Explanation:
Human cells are diploid in number i.e they exists in two basic sets (2N =46, where N is 23). So, cells of human body such as blood cells like white blood cells have two basic sets of chromosomes i.e 46 chromosomes, since they are produced by mitosis.
On the other hand, cells of humans involved in sexual reproduction such as the gametes (sperm and egg) have only one set of chromosomes since they are produced by meiosis - so they are haploid (N =23).
Answer:
Sperm=23
Egg cell=23
White blood cell=46
Explanation:
During cell division Meiosis produce haploid number of gametic chromosome 23.
The somatic cell contains 46 chromosome i.e diploid chromosome number. During cell division in meiosis gametes cells contains haploid number-23 chromosome which is half of the somatic cell chromosome.
During conjugation, haploid chromosome is donated by each parent to give a diploid organism with 46 chromosome number.
White blood cell contains 46 chromosome because it doesn't undergo cell division it is a somatic cell.