Answer:
Men express all the X-linked genes present in their genome.
Explanation:
Human males have one copy of X and one copy of Y chromosomes. They express all the alleles present on their X chromosome irrespective of its dominant or recessive nature. This occurs because males do not have a second copy of the X chromosome to carry another allele for the same gene. Color blindness is caused by a recessive allele present on the X chromosome. Males carrying one copy of this allele exhibit the disease while females need two copies of the allele of color blindness to express the disease. Therefore, males are more frequently affected by this disease.
From the options, the true statements about glycocalyx are : ( 1 ) and ( 3 )
- All animal cell have a glycocalyx ( 1 )
- The glycocalyx helps one cell adhere to another ( 3 )
Glycocalyx is a layer of macromolecules attached to the cell membrane of cells. they perform several functions like protecting the cell from the entrance of pathogens and also providing a medium for cell to cell interaction.
Glycocalyx are found in cells of living organisms, and they are made up of glycosaminoglycans, proteoglycans and glycoproteins as well. hence they are not comprised mostly of proteins.
Hence we can conclude that the true statements about glycocalyx are : All animal cell have a glycocalyx and the glycocalyx helps one cell adhere to another
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In C4 plants, photosynthesis is compartmentalized into two; light-dependent stage and light independent stage. The light-dependent stage occurs in the mesophyll cells of the leaf. Here, CO2 is fixed into oxaloacetate by PEP carboxylase enzyme. The oxaloacetate is then converted to malate that is then transported to bundle-sheath cells (around the leaf veins). The CO2 is then released from the malate and the gas molecule is subsequently fixed by RuBiSCO like in C3 plants. The biggest advantage of C4 photosytheis is that the wasteful process of photorespiration is greatly reduced.
Answer:
Organism
Explanation:
An individual palm tree grown in a tropical forest is regarded as an organism. This answer is gotten from the definition of an organism. An organism is defined as an individual living thing, which could be an animal, a plant, or a one celled creature. An individual palm tree is an organism because individually bit has all properties of life and can respond to stimulus.
Answer: transporting substances in a cell
Why: In eukaryotic cells, endomembrane system refers to the set of membranes present inside the cytoplasm which form single functional and developmental unit. The membranes are either connected directly or indirectly and exchange material with the help of vesicle transport. The main function of this system is to modify, pack and transport the proteins and lipids in and out of the cell. The main organelles which form the endomembrane system are- nuclear membrane, endoplasmic reticulum, Golgi apparatus, lysosomes, and vesicles.
