Explanation:
All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells. Leukocytes are found throughout the body, including the blood and lymphatic system.
<h2>Bacterial chromosome
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The DNA of most bacteria is contained in a single circular molecule, called the bacterial chromosome. The chromosome, along with several proteins and RNA molecules, forms an irregularly shaped structure called the nucleoid. This sits in the cytoplasm of the bacterial cell
Energy doesn't mean it's necessarily available to do work. energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy. (etc.)
Answer:
Nephron-- Collecting Tubule-Collecting Duct- Papillary duct- minor Calyx- Major Calyx- Renal Pelvis- Ureters- Bladder- Urethra
Explanation:
Nephron is a basic unit of kidney,in which urine is formed through the process of filtration (it occurs in glomerulus of the nephron). Nephrons are connected with the collecting duct system of the kidney to a minor calyx. The collecting duct system consists of connecting tubule, medullary collecting duct and papillary duct. The whole collecting duct system has a role in reabsorption and excretion.
Papillary ducts open at minor calyx, later in major calyx. Calyces open in pelvis , which is located inside hilum of kidney. Ureters travel out of kidney through hilum and pour urine into the urinary bladder. Urethra is a tube with the role to tranport the urine from the bladder when the bladder is full.
Answer:
The correct answer is -Sponges lack true tissue but have morevariation in cell type than animas in oter phylum.
Explanation:
Sponges are belong under phylum porifera which have diverse form encrusting sheets to volcano shaped mounds.
The tubes that contain in their body are differ in size from millimeter upto one meter.
The poriferans contain canal system and with help of this, they pump water which enters through a specialed pores called ostia that flows through canal called spongocoel and finally the water exits from their body through oscula.
The sponges show complex organization as their body contain single tube with 2 cell layer thick.
Ascon,leucon,sycons are the level of complexity.
