27.08.2021

why when the flagellum is longer the more likely the sperm is to fertilize the egg cell?

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Biology

Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular. Where is Leslie’s error?

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Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular. Where is Leslie's error? Plants do not make their own food..

Biology

Which object was developed to help astronomers learn more about the Sun?

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The Parker probe.

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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 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

A binary star system is made of stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to . Astronomers can also spot the dimmer star by observing a phenomenon called a(n) binary. This happens when the dim star passes in front of the bright star.

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Astronomers are able to detect the dimmer star because its gravity causes the bright star to . Astronomers can also spot the dimmer star by observing a phenomenon called a(n) binary.

Biology

What are the roles of fungi? Check all that apply. Fungi can be used to develop medicine. Fungi are a food source for animals and humans. Fungi produce oxygen to breathe. Fungi destroy rocks and minerals. Fungi are natural recyclers. Fungi cause infections.

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Fungi are a food source for animals and humans. Fungi produce oxygen to breathe. Fungi destroy rocks and minerals. Fungi are natural recyclers.