How many chromosomes does a primary spermatocyTe have?
A primary spermatocyte has 46 chromosomes in humans (23 pairs). During the process of spermatogenesis, a primary spermatocyte undergoes meiotic division to produce haploid sperm cells with 23 chromosomes.
What living organism has the largest penis?
The animal with the longest known penis in relation to it's body size is the barnacle. The animal with the largest penis size is the blue whale, measuring up to 12 feet long, but compared to it's total body length, it is very small.
Is a red beard sponge a parasite?
No, a red beard sponge is not a parasite. It is a filter-feeding marine animal that obtains nutrients by filtering particles from the water.
How good is an elephants vision?
Elephants have relatively poor vision compared to their other senses. They see best in dim light and can only see in shades of grey. Their sense of smell and hearing are more dominant and important for their survival.
Is seasonal cycles a density dependent limiting factor?
Seasonal cycles can impact population dynamics, but they are not considered a density-dependent limiting factor. Density-dependent factors depend on the population size, such as competition for resources or predation. Seasonal cycles can affect populations through environmental changes like temperature or precipitation variations.
The oldest shark in the world is probably older than a hundred years old.
What is the function of glottis?
The glottis is the opening between the vocal cords in the larynx. Its main function is to control the airflow into the lungs during breathing and to produce sound by vibrating the vocal cords.
What part of the brain controls learning?
The hippocampus and prefrontal cortex are two key brain regions involved in learning and memory. The hippocampus is essential for forming new memories, while the prefrontal cortex is involved in higher-level cognitive functions such as decision-making and problem-solving. Both regions work together to support the learning process.
What is the genus and species of a duck?
It depends on the breed. If it was a mallard, then it would be anas platyrhynchos. Look on wikipedia.com for more classifications.
Do zoologists get good vacation leave time?
It can vary depending on the employer, but zoologists generally receive standard vacation benefits similar to other professions. Many organizations offer around 2-4 weeks of paid vacation time per year. Research positions or fieldwork may have different time-off policies.
Monera, which are single-celled organisms like bacteria, archaea, and cyanobacteria, can be found in a wide variety of habitats. They are found in soil, water (freshwater and marine environments), air, and even extreme environments like hot springs, ice caps, and deep-sea hydrothermal vents. Their ability to adapt to diverse habitats is a key factor contributing to their widespread distribution.
How many lobes are present in the lungs for a pig?
There are four lobes that are present in the lungs of a pig. The larger, right lung is divided into four lobes; the apical, cardiac, diaphragmatic, and the fourth samller lobe below the apex of the heart, the intermediate.
Does laughing affect your body some way?
Yes, laughing has several positive effects on the body. It can reduce stress by decreasing cortisol levels and increasing endorphins, which are the body's natural feel-good chemicals. It also boosts the immune system by increasing antibodies and improving blood flow.
What is the loudest sound a human can hear?
20,000 Hz (20kHz) is the (ideal) highest FREQUENCY that a healthy human ear can hear. With regard to loud sounds, a sound LEVEL of 120 decibel (dB) causes pain, and a level of 140 dB causes deafness.
What advantages are there to dissecting a fetal pig rather than other mammals?
Dissecting a fetal pig is advantageous because their organs typically exhibit similar structures and functions to those of humans, making it a useful model for studying human anatomy. Additionally, fetal pigs are readily available, relatively inexpensive, and have a large enough size to make detailed observations. Finally, the internal structures of fetal pigs are well-preserved and easy to identify, aiding in the learning process for students.
What color is the blood of a hydra?
This is a trick question. Because hydras are only two cell layers thick, they do not have a true circulatory system. The inner cell layer absorbs materials directly from their gastrovascular cavity. So a hydra doesn't have blood!
A the largest tiger ever, a Siberian tiger, was record weighing over 1,025 lbs.
How fast can an elephant charge?
An elephant's top speed is about 25 mph (40 kph). They normally only reach this top speed on rare occasions when they are scared or upset. They normally move at a much lower running speed of about 12 to 20 mph (19 to 32 kph) depending on the species, temperate and other factors. However, they tend to stick to a steady walking speed of about 4 mph (6 kph) under normally circumstances.
Minnows can eat a variety of foods such as commercial fish flakes, freeze-dried bloodworms, and live or frozen brine shrimp. It is also important to feed them a varied diet to ensure they receive all the necessary nutrients for their health and well-being. Avoid overfeeding minnows as it can lead to water quality issues in their tank.
How is the digestive surface of a frog increased?
The digestive surface of a frog is increased through the presence of villi in the small intestine. Villi are finger-like projections that line the inner surface of the intestine, increasing the surface area for absorption of nutrients. This allows for more efficient digestion and absorption of nutrients from the food the frog eats.
White blood cells (WBC's), or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials. Five[1] different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system.[2] The number of leukocytes in the blood is often an indicator of disease. There are normally between 4×109 and 11×109 white blood cells in a litre of blood, making up approximately 1% of blood in a healthy adult.[3] In conditions such as leukemia, the number of leukocytes is higher than normal, and in leukopenia, this number is much lower. The physical properties of leukocytes, such as volume, conductivity, and granularity, may change due to activation, the presence of immature cells, or the presence of malignant leukocytes in leukemia. Leukocyte A white blood cell protects the body against infection and fight infection when it occurs. They are bigger than red blood cells.
leukocyte[lo̅o̅′kəsīt]Etymology: Gk, leukos + kytos, cell
one of the formed elements of the circulating blood system that comprise the cells of immunity and inflammation. Five types of leukocytes are classified by the presence or absence of granules in the cytoplasm of the cell. The agranulocytes are lymphocytesand monocytes. The granulocytes are neutrophils, basophils, and eosinophils. White cells are able to squeeze through intracellular spaces by diapedesis and migrate by ameboid movements. Leukocytes measure 8 to 20 μm in diameter. Normal blood values vary from 5000 to 10,000 leukocytes per cubic millimeter. Leukocytes function as phagocytes of bacteria, fungi, and viruses; detoxifiers of toxic proteins that may result from allergic reactions and cellular injury; and immune system cells. Also spelled leucocyte. Also called white blood cell, white corpuscle. Compare erythrocyte, platelets. See also complete blood count, differential white blood cell count, leukocytosis, leukopenia. leukocytic, adj.
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from someone thaats really bored at school :)
Which crustaceans can sleep for three years?
In the animal kingdom, the African lungfish (Protopterus annectens) is known to be capable of staying dormant for up to three years during droughts by burrowing into mud.
Yes, shrimp have a simple tubular heart that pumps blood through their open circulatory system. This heart is located in the upper part of their body, just beneath the carapace.
Name the only place in Europe where wild monkeys live?
Gibraltar is the only place in Europe where wild monkeys, specifically Barbary macaques, live. These monkeys roam freely in the rock of Gibraltar and are a popular tourist attraction in the area.
What happens as a result of insertion?
Insertion in the context of database systems refers to adding new records or data into a table. When insertion occurs, a new row is created in the table with the specified data values. This process helps to expand the dataset and allows for the storage of additional information for future retrieval and processing.