Read the statements below about the Periodic Table. Identify which statements are true/false. If the statement is false, explain why it is false. S8P1f a. Each horizontal row of the table is called group. b. Each family represents the number of energy levels present in an atom of the element. c. The properties of an element can be predicted from its location on the table. d. The elements are arranged from left to right, up to down by decreasing atomic number.

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A hydrangea plant has blue flowers when grown in acidic soil, but has pink flowers when grown in basic soil. A clone of the pink-flowered plant is grown in acidic soil and produces blue flowers. This change in flower color is most likely due to:_____a. sexual reproduction in the plantsb. resulting in variationasexual reproduction in the plants c. resulting in variationgenes being expressed in different ways due to environmental conditionsd. a gene mutation that occurred after the clone was produced
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Sharks have highly developed _____.thermoreceptors
photoreceptors
olfactory receptors
mechanoreceptors

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Among the options the best answer is "olfactory receptors" - as the sharks have a very good sense of smell. (they have the other receptors, but not as developed)
however, they are more famous for their electroreceptrors- they can sense the electric current around them!

Answer: olfactory receptors

Sharks have highly developed olfactory receptors. The olfactory receptors in animals allows them to sense the odor. Sharks have olfactory receptors more sensitive than humans. They have nostrils located on the underside of their snout, which they use for smelling not for breathing. The smell of the prey animal or the blood of any animal is detected by the shark with the help of these receptors.

Hemophilia is an x-linked recessive disease. Under which of the following conditions will a female child inherit hemophilia? Both parents must have the hemophilia allele. Only the father must have the hemophilia allele. Both sets of grandparents must have the hemophilia allele. Only the mother must have the hemophilia allele.

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Answer:

Both parents must have the hemophilia allele.

Explanation:

I just took the test. And if the trait is recessive the both parents must have it to make it an applicable trait.

Which of these is NOT a cell typically found in the xylem tissue?Which of these is not a recognized class of plant hormone?

tracheids

vessels

companion cell

vascular parenchyma

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companion cells. they are found only in the phloem.

Why you do sometimes shiver when you're cold?

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When you shiver, that's actually how you help yourself stay warm! It's your immediate instinct reaction to do so when you're cold, so there will be more heat produced, and they occur by your muscles moving. =)

Which of the bonding examples below is NOT possible?(A) a DNA adenine to a DNA thymine
(B) a DNA adenine to an RNA thymine
(C) a DNA guanine to an RNA cytosine
(D) a DNA adenine to an RNA uracil
(E) a DNA guanine to a DNA cytosine

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B is not possible. RNA contains only adenine, cytosine, guanine and Uracil instead of Thymine. The rest are correct because Adenine pairs with either uracil (RNA) or thymine (DNA) and cytosine pairs with Guanine

A breastfeeding mother requires at least __________ liters of water per day, and should drink at least one cup of water each time she breast-feeds her child.

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The answer is two.

About 90 percent of mother's milk is water. A baby drinks up to one liter of milk per day. The simple math says it is important for a mother to take almost one liter of water for the milk and one more for her body to be hydrated. This is 2 liters per day in total. Of course, the more is the better, so drinking up to 3 liters will help the mother to stay hydrated.

Answer:

Explanation:

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A geologist creates a model of a mountain range in order to study erosion patterns. The elevation of the tallest mountain in the actual mountain range is 10,000 feet. The height of the tallest mountain in the model is 1 foot. The elevation of the smallest mountain in the actual mountain range is 5,000 feet. What is the height of the smallest mountain in the model?0.5 feet 5 feet 0.2 feet 2.5 feet