Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Bacteria possess which type of ribosomes? (Kerala PMT-2004)
Bacteria possess 70S ribosomes, which are smaller than the 80S ribosomes found in eukaryotic cells. The 'S' stands for Svedberg units, which measure the rate of sedimentation during centrifugation, indicating the size and density of the ribosome.
among the following which organelle is associated with the following characters?
1.membrane bound structure found in cytoplasm
2.formed by golgi apparatus
3.rich in hydrolases enzymes
4.they are optimal under acidic pH
FACT
_________is a site for synthesis of glycolipids and glycoproteins. (CBSE-2011)
The Golgi apparatus is the site for the synthesis of glycolipids and glycoproteins. It modifies proteins and lipids that have been built in the endoplasmic reticulum and prepares them for export to different destinations inside or outside the cell.
The Orgenelle, which is related with production of ATP is . (Pb PMT-2004)
Mitochondria are known as the powerhouses of the cell because they are the site of ATP (adenosine triphosphate) production. ATP is the primary energy carrier in cells, and its production is crucial for cellular activities.
How many layers are there in the structure of thylakoid? (AMV-2003)
Each ribosome are made up of how many subunits ?(Jharkhand-2003)
Ribosomes are made up of two subunits, a large subunit and a small subunit. In prokaryotes, these are the 50S and 30S subunits, respectively, while in eukaryotes, they are the 60S and 40S subunits.
By which structure, hypothalamus is connected with anterior lobe of pituitary gland?
The hypothalamus is connected to the anterior lobe of the pituitary gland via the hypophyseal portal system. This system of blood vessels allows hypothalamic hormones to reach the anterior pituitary directly and regulate its function.
If secretary cells of GHRH are damaged then ......
GHRH (Growth Hormone-Releasing Hormone) stimulates the secretion of growth hormone (GH) from the pituitary gland. GH plays a crucial role in cell division and growth. Therefore, if the secretary cells of GHRH are damaged, the process of cell division will be adversely affected.
Which of the following hormone is directly acting on tissue cells?
STH (Somatotropic Hormone), also known as Growth Hormone (GH), acts directly on tissue cells to stimulate growth and cell reproduction. TSH (Thyroid-Stimulating Hormone), LTH (Luteotropic Hormone), and ACTH (Adrenocorticotropic Hormone) act on other endocrine glands to release their respective hormones.
Which of the following is correct for somato tropic hormone?
Somatotropic hormone (STH) or Growth Hormone (GH) in excess in adults leads to a condition called acromegaly, which causes enlargement of the lower jaw, hands, feet, and other tissues.
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