Explanation:
mitosis has 1 stage and meiosis had 2 stages.
Answer:
Mitosis and meiosis are nuclear division processes that occur during cell division.
Mitosis involves the division of body cells, while meiosis involves the division of sex cells.
The division of a cell occurs once in mitosis but twice in meiosis.
Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis.
Daughter cells resulting from mitosis are diploid (46 chromosomes), while those resulting from meiosis are haploid (23 chromosomes).
Daughter cells that are the product of mitosis are genetically identical. Daughter cells produced after meiosis are genetically diverse (genes swap during division).
Mitosis has 1 parent and meiosis produces 2 types of sex cells which fuse at fertilisation.
mutation
B.
fertilization
C.
variation
D.
reproduction
Reproduction is the process in which an organism makes a new organism. Thus, the correct option is D.
Reproduction is the process of production of new organism. There are two main types of reproduction including sexual and asexual reproduction.
In sexual reproduction, an organism combines the genetic information from each of the two parents and is genetically unique from both the parents. In asexual reproduction, one parent copies itself to form a genetically identical offspring called as clone.
Reproduction ensures the continuity of the species and keeps the species from becoming extinct. It plays a role in evolution of the species as it creates variations through genetic recombination.
Therefore, the correct option is D.
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What kind of transport is occurring?
Salivary glands create saliva and secrete saliva. Acini, which are collections of cells, are the primary secretory components of salivary glands.
The largest salivary glands, the parotid glands, which are located between the rear of the jaw and each ear, release around 25% of the total volume of saliva when at rest.
The parotid capsule, a tough capsule that encases each gland, is present. Saliva from the parotid is typically watery or serous.
Large amounts of bicarbonate ions are secreted, potassium is secreted, and a significant portion of sodium is actively reabsorbed.
Salivary glands include small collecting ducts that branch out into larger ducts until they unite into one giant duct that exits into the mouth cavity.
Therefore, salivary gland cells produce the enzyme salivary amylase and secrete it into the salivary ducts.
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Answer:
Saliva is produced in and secreted from salivary glands. The basic secretory units of salivary glands are clusters of cells called an acini. These cells secrete a fluid that contains water, electrolytes, mucus and enzymes, all of which flow out of the acinus into collecting ducts. Within the ducts, the composition of the secretion is altered. Much of the sodium is actively reabsorbed, potassium is secreted, and large quantities of bicarbonate ion are secreted. Bicarbonate secretion is of tremendous importance to ruminants because it, along with phosphate, provides a critical buffer that neutralizes the massive quantities of acid produced in the forestomach's. Small collecting ducts within salivary glands lead into larger ducts, eventually forming a single large duct that empties into the oral cavity.
Explanation:
Answer: The size.
Explanation: On the one hand the Emperor Penguin is bigger reaching up to 48 Inches (120cm) of height and 100 Lb in weight, on the other hand the Galápagos Penguin is much smaller. For example a large adult usually goes up to 21 Inches (53cm) and 5 Lb of weight.
This is directly related to the temperature of the environment in which each one develops, because a body exchanges heat in two dimensions through the surface. So, it's easier for a big creature to maintain core temperature stable.
This is really important in environments like the Arctic where temperature goes below zero and the opposite happen in the Equator where there is a tropical weather all the time.
Natural casts
Natural casts are fossils that consistof minerals that are filled in an open mold of an organism. This type of castsis made when minerals are deposited in the mold. Casts can also be syntheticallyproduced when the molds are filled with synthetic material such as latex.