The answer is (b). I think
Sex<span> is determined by two chromosomes, X and Y. A female is XX, a male is XY. Since women completely lack the Y choromosome, they always contribute an X chromosome to the baby. The </span>sex<span> is determined by whether the sperm that fertilizes the egg is carrying another X or a Y.</span>
Answer:
(a)-True
Explanation:
Chemotrophic or chemosynthetic organisms are those capable of using reduced inorganic compounds as substrates to obtain energy and use it in respiratory metabolism. It is a faculty known as chemosynthesis. These can be chemoautotrophs or chemoheterotrophs. Like photoautotrophs (such as algae and plants), chemoautotrophs use CO2 as the main source of carbon, but unlike them, they do not use light as a source of energy but instead obtain it by oxidation of reduced inorganic compounds, such as NH3 , NO2-, H2, reduced forms of sulfur (H2S, S, S2O3-) or Fe2 +. Its cellular carbon is derived from CO2 and is assimilated through the reactions of the Calvin cycle, analogously to plants.As a result of their distinctive ability to grow in strictly mineral media, in the absence of light, these organisms are often referred to as chemolithotrophs ( lithos, rock) On the contrary, chemoheterotrophic organisms (or simply heterotrophs), such as animals and fungi, oxidize reduced organic molecules, such as glucose (via glycolysis), triglycerides (via beta oxidation) or amino acids ( oxidative deamination route) to obtain metabolic energy (ATP) and reducing power; In addition, they are unable to use CO2 as a carbon source.
If light hits the light sensitive area at the back of your eye, called the retina, photoreceptors take it as a signal. This signal translates through your brain through what is called the optic nerve. Your brain then turns this signal into something you can observe or see.
<h2>Sugar beet harvest </h2>
Explanation:
Sugar beets have to be harvested and stockpiled in September because they have to get the root out of the ground before the ground freezes
- Sugar beets are harvested with two primary pieces of equipment
- The defoliator removes the green leaves and slices a slab from the top of the sugar beet root
- This removed slab is the growing point of the sugar beet and contains high levels of impurities, which impede the factories ability to extract the sugar from the remainder of the harvested root
- The sugar beet root is then harvested with a pinch wheel harvester, which pinches the root and lifts from the soil
- The sugar beet harvester also separates some soil and conveys the sugar beet into a truck to be transported to a receiving station
