Generate Quiz 68C5718018652

Outside of the central nervous system, synapses release the neurotransmitter acetylcholine. It is essential for the transmission of signals between neurons and between muscles in different body parts.

One way to describe a cell membrane is as a fluid mosaic model. According to the fluid mosaic model, the cell membrane’s structure is a mosaic of elements that give it its fluid quality, such as proteins, carbohydrates, cholesterol, and phospholipids. The thin membrane that envelops all live cells and separates them from their surroundings is known as the cell membrane or plasma membrane. The fluid mosaic model describes its structure.

Van Niel postulated that all photosynthetic organisms require a hydrogen source and that plants split water as their hydrogen source, releasing oxygen, based on evidence from bacteria that use hydrogen sulfide (H2S) for photosynthesis. Scientists used a heavy isotope of oxygen (O18) to confirm this theory.

The lymph is expelled from lymphatic vessels into the left and right lymphatic ducts (also known as the thoracic ducts). The subclavian vein, which returns lymph to your bloodstream, is connected to these ducts. The vein beneath your collarbone is called the subclavian vein. Normal blood pressure and volume are maintained by reintroducing lymph into the circulation. Additionally, it avoids edema, which is the excessive accumulation of fluid around the tissues. The deep vein that returns oxygen-poor blood from your upper body to your heart is called a subclavian vein. Each side of your body has one of these. Blood is transported from your right upper body to your right subclavian vein. Blood from your left upper body is transported by your left subclavian vein.

The human body has a range of resistance; there is no one value that is constant. When the human hand is dry, its resistance can reach 100K ohms, but when it is wet, it can drop to 300 ohms. Therefore, 120K ohm is the best option in this situation.

A cofactor is a chemical substance that is not a protein but is attached to a protein and necessary for the biological function of the protein. Usually, these proteins are enzymes. Cofactors aid in biological processes and can be thought of as “helper molecules.”

One ATP molecule, one FADH2 molecule, and three NADH molecules are created during a single Krebs cycle cycle. While FADH2 and NADH carry high-energy electrons that will be utilized in the electron transport chain to produce additional ATP during oxidative stress, ATP is produced through substrate-level phosphorylation.

The pulmonary trunk receives the blood when the right ventricle contracts. One of the heart’s four chambers, the right ventricle is in charge of pumping blood that has lost oxygen after being received from the right atrium. The deoxygenated blood is forced through the pulmonary valve and into the pulmonary trunk when the right ventricle contracts during systole.

Since bacteria categorized as “spirillum” have a spiral structure, Option C is accurate.

That is the right answer. Animals, including humans, use glycogen, a highly branched polymer composed of glucose units, as their main source of energy storage. Glycogen, which is abundantly stored in human muscles, serves as an easy-to-access source of glucose when the body needs more energy, as during physical activity. Glycogen is broken down into glucose units when energy is required. Cell respiration then uses these glucose units to produce energy for other cellular processes like muscle contraction.

Certain structures of the organisms have developed differently as a result of varying needs or requirements. The homologous organs can be explained by this evolution. Divergent evolution is based on this.

d) Each of these, Explanation: d) All of these is the right response. The ventral nerve cord, lateral nerve cords, and other interconnected nerve structures make up nematodes’ nervous system, which enables them to sense their surroundings, plan their movements, and perform a number of vital tasks.

The pancreatic islets of Langerhans’ alpha cells secrete the peptide hormone glucagon. By encouraging the breakdown of glycogen stored in the liver, which releases glucose into the bloodstream, glucagon contributes to elevated blood sugar levels.

Gene frequency, another name for allele frequency, describes the prevalence of an allele in a population. An allele’s frequency will eventually rise to the benefit of the species if it produces a useful and successful trait during evolution.

The pituitary stalk, or more precisely the infundibulum, connects the hypothalamus and the pituitary gland.

A combination of non-proteinaceous material and globular protein makes up hemoglobin. It is a globular protein that is present in red blood cells and is in charge of transporting carbon dioxide from tissues back to the lungs and oxygen from the lungs to tissues. Each of the four subunits that make up hemoglobin has an iron-containing haem group that attaches to oxygen. A non-proteinaceous component, the haem group is essential to hemoglobin’s ability to carry oxygen.

The reflex action’s impulse pathway is known as the reflex arc. The center of reflex action is the spinal cord. It starts with a motor neuron at an effector (like a skeletal muscle) and finishes with a sensory neuron at a receptor (like a pain receptor in the fingertip).

Aerobic cells undergo oxidative phosphorylation, which is the process by which ATP is synthesized in the presence of oxygen. Water is produced by aerobic cells, which use oxygen as the last electron acceptor in the electron transport chain. The inner membrane of the cell’s mitochondria and the mitochondria of eukaryotic cells are where this process occurs.