19.06.2021

Explain how human chromosome 13 can be composed of just two molecules but have so many atoms ? What are those two molecules ? How are they bonded to each other?

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Biology

for six years an artificial fertilizer is used on a apple orchard the orchard is next to a stream which empties in to a slat water bay during the last 5 years resercers have observed an increase in alge in the bay they have also sampled fish populations in the bay each year apex

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for six years an artificial fertilizer is used on a apple orchard the orchard is next to a stream which empties in to a slat water bay during the last 5 years researchers have observed an increase in algae in the bay they have also sampled fish populations in the bay each year apex...

Biology

One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds. How are the birds able to coexist?

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One parrot species that feeds on large seeds nests is in the same tree as a parakeet that feeds on small seeds, they occupy different niches.

Biology

Give examples of myths about aging that many people believe. Why are these myths harmful?

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Myths about aging :

Depression and loneliness are normal in older adults. ...

The older I get, the less sleep I need. ...

Older adults can't learn new things. ...

It is inevitable that older people will get dementia. ...

Older adults should take it easy and avoid exercise so they don't get injured.

Myths about aging : Depression and loneliness are normal in older adults. ...The older I get, t

Biology

Suppose there are five genes in pumpkins that work additively to affect pumpkin size. A homozygous lowercase allele pumpkin, aabbccddee, weighs 20 lb. Each capitalized allele additively affects the final phenotype by either adding or subtracting weight from the base pumpkin size. The effect of a single capitalized allele is listed in the table. AlleleEffect A +6 B −2 C −3 D +3 E +4 What would the potential size range be for pumpkin offspring produced from the cross between a parent with genotype aaBbCCDdEe and a parent with genotype AaBBCcddEe?

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Answer : 900 kg pumpkins

Biology

The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell. Which of the following changes is most likely to slow down this reaction? Adding more maltose molecules Increasing the volume of the cell Adding more of the enzyme Increasing the pH within the cell

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The maltose molecule can be broken down into two individual glucose molecules with the help of an enzyme produced within a cell.

D).increasing the pH with in the cell.

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The maltose molecule can be broken down into two individual glucose molecules with the help of an en

Biology

The element phosphorus is located to the right of the element magnesium along the same period in the periodic table. Which best describes the relationship between the elements? A. Magnesium has a larger atomic number. B. Phosphorus has a larger atomic mass. C. Magnesium is in the same category as phosphorus D. Phosphorus has similar chemical properties as magnesium

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B)Phosphorus has a larger atomic mass.

As we move right in the periodic table, both atomic number and atomic mass increases. Magnesium comes under S-block elements (Group 2) and Phosphorus comes under P-block elements (Group-15).

Biology

Which of the following distinguishes why large corporate farms are losing favor with the public? The farms have been raising their prices due to water shortages. The public is upset with the farms’ unnatural farming practices. The farms have been withholding food in order to receive more funding. The quality of the farms’ food has declined since the 1980s.

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Consumers are dissatisfied with the way that large corporate farms are treating nature's natural resources.

Biology

Which structure could a scientist look for in a plant that would identify it as a club moss rather than a liverwort? phloem spores rhizoids flowers

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A scientist look for in a plant that would identify it as a club moss rather than a liverwort.

Biology

Zoe wants to replace the letters on her diagram with labels that describe how the nerves and muscles communicated with each other to trigger her reflexive response. What should her labels be? Should she eliminate any letters from this pathway?

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The nerves and muscles communicated with each other to trigger her reflexive response…

Biology

Using the term water potential, explain why the onions ; (i)gained mass when soaked in dilute solutions of sodium chloride (ii)lost mass when soaked in concentrated solutions of sodium chloride

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when soaked in dilute sodium chloride solution onion gain mass because of the process of osmosis.

Explanation: Osmosis is a process when there is movement of water from the region of comparatively higher concentration to the region of lower concentration across in a permeable membrane.

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