Q: What do animals store with the help of saturated fatty acids? Read this paragraph and choose the correct option from the provided answers: In saturated fatty acids , carbon atoms are bonded to as many hydrogen atoms as possible. This causes the molecules to form straight chains, as shown in Figure below . The straight chains can be packed together very tightly, allowing them to store energy in a compact form. This explains why saturated fatty acids are solids at room temperature. Animals use saturated fatty acids to store energy. Choices: - oxygen - sugar - protein - energy A:
energy

(Question)
Q: In the lungs, bicarbonate is transported back into the red blood cells in exchange for what? Read this paragraph and choose the correct option from the provided answers: 39.4 Transport of Gases in Human Bodily Fluids Hemoglobin is a protein found in red blood cells that is comprised of two alpha and two beta subunits that surround an iron-containing heme group. Oxygen readily binds this heme group. The ability of oxygen to bind increases as more oxygen molecules are bound to heme. Disease states and altered conditions in the body can affect the binding ability of oxygen, and increase or decrease its ability to dissociate from hemoglobin. Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate. The majority of carbon dioxide is transported as part of the bicarbonate system. Carbon dioxide diffuses into red blood cells. Inside, carbonic anhydrase converts carbon dioxide into + + carbonic acid (H2CO3), which is subsequently hydrolyzed into bicarbonate (HCO 3 ) and H . The H ion binds to hemoglobin in red blood cells, and bicarbonate is transported out of the red blood cells in exchange for a chloride ion. This is called the chloride shift. Bicarbonate leaves the red blood cells and enters the blood plasma. In the lungs, bicarbonate is transported back into the red blood cells in exchange for chloride. The H+ dissociates from hemoglobin and combines with bicarbonate to form carbonic acid with the help of carbonic anhydrase, which further catalyzes the reaction to convert carbonic acid back into carbon dioxide and water. The carbon dioxide is then expelled from the lungs. Choices: - phosphate - glucose - oxygen - chloride A:
(Answer)
chloride

Ques: Q: The corona surrounds which major object in our solar system? Read this paragraph and choose the correct option from the provided answers: The corona is the halo around the Sun. Choices: - Neptune - Earth's moon - Jupiter - the sun A:
Ans: the sun

(Q).
Q: G2 and s are phases in what process that is important in cell division? Read this paragraph and choose the correct option from the provided answers: DNA and the associated proteins, as well as accumulating enough energy reserves to complete the task of replicating each chromosome in the nucleus. S Phase Throughout interphase, nuclear DNA remains in a semi-condensed chromatin configuration. In the S phase (synthesis phase), DNA replication results in the formation of two identical copies of each chromosomesister chromatidsthat are firmly attached at the centromere region. At this stage, each chromosome is made of two sister chromatids and is a duplicated chromosome. The centrosome is duplicated during the S phase. The two centrosomes will give rise to the mitotic spindle, the apparatus that orchestrates the movement of chromosomes during mitosis. The centrosome consists of a pair of rod-like centrioles at right angles to each other. Centrioles help organize cell division. Centrioles are not present in the centrosomes of many eukaryotic species, such as plants and most fungi. G2 Phase In the G2 phase, or second gap, the cell replenishes its energy stores and synthesizes the proteins necessary for chromosome manipulation. Some cell organelles are duplicated, and the cytoskeleton is dismantled to provide resources for the mitotic spindle. There may be additional cell growth during G2. The final preparations for the mitotic phase must be completed before the cell is able to enter the first stage of mitosis. Choices: - tissues - osmosis - cytokinesis - mitosis A:
(A).
mitosis

Ques:Q: The combination decomposition or rearrangement of elements and compounds to form new substances is known as? Read this paragraph and choose the correct option from the provided answers: As the rust forms on the surface of the iron, it flakes off to expose more iron, which will continue to rust. Rust is clearly a substance that is different from iron. Rusting is an example of a chemical change. Some chemical changes are not as obvious but are still hugely important. For example, photosynthesis and cellular respiration are chemical changes that we could not live without. Chemical changes involve the combination, decomposition, or rearrangement of elements and compounds to form new substances. Choices: - ionic changes - carbon changes - mineral changes - chemical changes A:

Ans:chemical changes

Question: Q: How is blood supplied from the mother to the fetus? Read this paragraph and choose the correct option from the provided answers: Hemoglobin of the Fetus The fetus has its own circulation with its own erythrocytes; however, it is dependent on the mother for oxygen. Blood is supplied to the fetus by way of the umbilical cord, which is connected to the placenta and separated from maternal blood by the chorion. The mechanism of gas exchange at the chorion is similar to gas exchange at the respiratory membrane. However, the partial pressure of oxygen is lower in the maternal blood in the placenta, at about 35 to 50 mm Hg, than it is in maternal arterial blood. The difference in partial pressures between maternal and fetal blood is not large, as the partial pressure of oxygen in fetal blood at the placenta is about 20 mm Hg. Therefore, there is not as much diffusion of oxygen into the fetal blood supply. The fetus' hemoglobin overcomes this problem by having a greater affinity for oxygen than maternal hemoglobin (Figure 22.27). Both fetal and adult hemoglobin have four subunits, but two of the subunits of fetal hemoglobin have a different structure that causes fetal hemoglobin to have a greater affinity for oxygen than does adult hemoglobin. Choices: - brain stem - vagina - spinal cord - umbilical cord A:
Answer:
umbilical cord