The options are incorrect. The correct question with options is:
Which of the following statements is true concerning catabolic pathways?
A. They combine molecules into more energy-rich molecules
B. They supply energy, primarily in the form of ATP, for the cell's work
C. They are endergonic
D. They are spontaneous and do not need enzyme catalysis
E. They build up complex molecules such as protein from simpler compounds
Answer:
B. They supply energy, primarily in the form of ATP, for the cell's work
Explanation:
Catabolic pathways are the metabolic pathways that breakdown the complex molecules into simpler substances. The chemical reactions of catabolic pathways are mostly exergonic with a negative value of free energy change.
The released energy is stored in the form of ATP molecules. The energy-releasing reactions of catabolic pathways supply the cells with ATP molecules to perform the functions. For instance, breakdown of glucose into CO2 and H2O during aerobic cellular respiration is a catabolic process and forms as many as 32 ATP molecules.
In the genetic disease called ichthyosis, the skin is rough, brown, and scaly because the uppermost layer cannot peel off as easily as it should. what layer of the skin is affected in this disorder is epidermis.
Ichthyosis is a skin condition that turns the skin, thick, scaly and fleshy. Since it is genetic disorder, the genes are inherited from the parents. Of inherited from one parent, the skin condition are milk. But when genes are received from both the parents, the disease occurs in its most severe form, also called ichthyosis vulgaris.
Epidermis is the outermost layer of the skin. It is the body's first line of defense because it prevents any microbes entering the body. Besides, it also protects from mechanical injury, stops the loss of moisture and also reduces the effect of UV radiations.
To know more about ichthyosis, here
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The optic nerve carries impulses to the thalamus and ultimately to the visual cortex of occipital lobes.
The optic nerve is a paired nerve, and part of the central nervous system that transfer visual messages from the retina to the vision areas of the brain through electrical impulses. The optic nerve is situated behind the eye and it is made up of retinal ganglion cell axons, glial cells and over one million nerve fibers.
Photosynthesis and food transport has to rely on the plant to respond to the direction of the light.
DNA is composed of repeating structural units called Nucleotides. Deoxyribose is the five carbon sugar found in DNA.
Nucleotides and Deoxyribose is your answer.
