Q: An electormagnet is a piece of iron inside a? Read this paragraph and choose the correct option from the provided answers: An electormagnet is a piece of iron inside a solenoid. Choices: - copper core - tunnel - reactor - solenoid A:
solenoid

(Question)
Q: Many objects have color because they contain what? Read this paragraph and choose the correct option from the provided answers: Many objects have color because they contain pigments. A pigment is a substance that colors materials by reflecting light of certain wavelengths and absorbing light of other wavelengths. A very common pigment is the dark green pigment called chlorophyll, which is found in plants. Chlorophyll absorbs all but green wavelengths of visible light. Pigments are also found in many manufactured products. They are used to color paints, inks, and dyes. Just three pigments, called primary pigments, can be combined to produce all other colors. The primary colors of pigments are the same as the secondary colors of light: cyan, magenta, and yellow. Choices: - solvents - vitamins - salts - pigments A:
(Answer)
pigments

Ques: Q: All three types of convergent plate boundaries produce what destructive phenomenon? Read this paragraph and choose the correct option from the provided answers: All three types of convergent plate boundaries produce massive earthquakes. Choices: - storm - tornado - volcano - earthquake A:
Ans: earthquake

(Q).
Q: A crucial function of the cranial nerves is to keep visual stimuli centered on the fovea of what eye structure? Read this paragraph and choose the correct option from the provided answers: Testing eye movement is simply a matter of having the patient track the tip of a pen as it is passed through the visual field. This may appear similar to testing visual field deficits related to the optic nerve, but the difference is that the patient is asked to not move the eyes while the examiner moves a stimulus into the peripheral visual field. Here, the extent of movement is the point of the test. The examiner is watching for conjugate movements representing proper function of the related nuclei and the MLF. Failure of one eye to abduct while the other adducts in a horizontal movement is referred to as internuclear ophthalmoplegia. When this occurs, the patient will experience diplopia, or double vision, as the two eyes are temporarily pointed at different stimuli. Diplopia is not restricted to failure of the lateral rectus, because any of the extraocular muscles may fail to move one eye in perfect conjugation with the other. The final aspect of testing eye movements is to move the tip of the pen in toward the patient's face. As visual stimuli move closer to the face, the two medial recti muscles cause the eyes to move in the one nonconjugate movement that is part of gaze control. When the two eyes move to look at something closer to the face, they both adduct, which is referred to as convergence. To keep the stimulus in focus, the eye also needs to change the shape of the lens, which is controlled through the parasympathetic fibers of the oculomotor nerve. The change in focal power of the eye is referred to as accommodation. Accommodation ability changes with age; focusing on nearer objects, such as the written text of a book or on a computer screen, may require corrective lenses later in life. Coordination of the skeletal muscles for convergence and coordination of the smooth muscles of the ciliary body for accommodation are referred to as the accommodationconvergence reflex. A crucial function of the cranial nerves is to keep visual stimuli centered on the fovea of the retina. The vestibulo-ocular... Choices: - iris - scelra - pupil - retina A:
(A).
retina

Ques:Q: The hormones epinephrine and norepinephrine are released by what? Read this paragraph and choose the correct option from the provided answers: Short-term Stress Response When presented with a stressful situation, the body responds by calling for the release of hormones that provide a burst of energy. The hormones epinephrine (also known as adrenaline) and norepinephrine (also known as noradrenaline) are released by the adrenal medulla. How do these hormones provide a burst of energy? Epinephrine and norepinephrine increase blood glucose levels by stimulating the liver and skeletal muscles to break down glycogen and by stimulating glucose release by liver cells. Additionally, these hormones increase oxygen availability to cells by increasing the heart rate and dilating the bronchioles. The hormones also prioritize body function by increasing blood supply to essential organs such as the heart, brain, and skeletal muscles, while restricting blood flow to organs not in immediate need, such as the skin, digestive system, and kidneys. Epinephrine and norepinephrine are collectively called catecholamines. Choices: - uptake medulla - nutrients medulla - external medulla - adrenal medulla A:

Ans:adrenal medulla

Ques: Q: Plants can reproduce sexually and in which other way? Read this paragraph and choose the correct option from the provided answers: The life cycle of all plants is complex because it is characterized by alternation of generations. Plants alternate between diploid sporophyte and haploid gametophyte generations, and between sexual and asexual reproduction. The ability to reproduce both sexually and asexually gives plants the flexibility to adapt to changing environments. Their complex life cycle allows for great variation. A general plant life cycle is represented by the diagram in Figure below . From the figure, you can see that the diploid sporophyte has a structure called a sporangium (plural, sporangia) that undergoes meiosis to form haploid spores . A spore develops into a haploid gametophyte . The gametophyte has male or female reproductive organs that undergo mitosis to form haploid gametes (sperm or eggs). Fertilization of gametes produces a diploid zygote . The zygote grows and develops into a mature sporophyte, and the cycle repeats. Choices: - spontaneously - genetically - horizontally - asexually A:
Ans:
asexually