BIOLOGY HIGH SCHOOL

How does the water molecule differ from other compounds of similar size?

Answers

Answer 1
Answer:

Water molecules does behave differently from other chemical compounds. because:

  • Water molecules contains a oxygen atom (O) and the two hydrogen atoms (H) which are asymmetrically arranged.

  • Water molecule can form up to four of hydrogen bonds and together, they give water a cohesiveness pertains in liquids.

  • In some substances, the atoms and molecules move closer together as they get colder and then solidify or freeze up. Water does attains its greatest density at four degrees Celsius because the water molecules are packed closest together at a particular temperature

  • Water does play a role in climate not only in its liquid and solid states.

  • water vapour in the atmosphere affects the heat budget of the Earth and greenhouse effect.

Conclusively, water is a universal solvent that is taken in by man. Its molecules are not harmful to man when consumed.

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Answer 2
Answer:

Answer:

Water is the universal solvent, and since it's a polar molecule it can break up and dissolve other substances and ionic compounds; besides, water owns more plasticity and resilience due the way its atoms are linked together, being able to undergo drastic temperature changes.

Explanation:

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Can someone help me with this science question? Please.

Answers

Answer:

Nitrobacter and nitrosomonas

Explanation:

Both are bacteria and form nitrates and nitrites from ammonia

With the exception of some sponges, all animals are _____. coelomates
autotrophs
heterotrophs
hermaphrodites

Answers

The correct answer is option C

All the animals are Heterotrophs as they cannot perform photosynthesis.

Except some of the sponges, all the animals are heterotrophs as they cannot make their own food(photosynthesis).

Heterotrophs depends on autotrophs or some other organisms for their food.

They are dependent on other organisms for their energy needs.
All animals are heterotrophs.

The main function of _____ tissue is communication between different parts of the body.connective
epithelial
nervous
muscular

Answers

Neevous tissue bevause the brain sends signals around the body

Answer:

nervous

Explanation:

The nervous tissue is one of the four basic tissues of the organism, it is formed by two types of cellular elements, it represents the fundamental component of the structures and organs that make up the nervous system. The main function of the nervous tissue is to capture internal and external stimuli and transform them into nerve impulses. All modifications of the external or internal environment and sensory stimuli such as temperature, pressure, light, sounds and taste, among others, are detected, examined and transmitted by nerve cells. On the other hand, the nervous tissue is in charge of coordinating the motor, glandular, and visceral functions of the individual.

Considering that nearly 85 percent of corn crops are genetically engineered, which impact does genetically engineered corn have on human health?

Answers

Genetically modified crops are genetically engineered such that a desired trait is enhanced or reproduced to appear in every offspring. Genetically engineered corn has been engineered to resist pests and herbicides; thus, we have more yield and many people especially in the low class society can afford. A disadvantage, yet is still a debate, is that genetically engineered crops such as corn, has toxic effects to internal organs such as our liver, a vital internal organ. 

Answer:

The long-term effects are unknown and have not been studied because it is a fairly new technology.

Explanation:

Just took the test.

A risk factor for osteoporosis is a. early menopause. b. ovarian cysts. c. late menopause. d. endometriosis.

Answers

Answer:

The correct answer is a. early menopause.

Explanation:

Estrogen is the hormone that helps in the protection of bones from being lost or degraded. This hormone is released in the ovary by follicle. The level of estrogen decreases sharply when a woman reached its menopause.

This decrease in estrogen levels in females can lead to osteoporosis in women. So early menopause increases the chances of bone loss in woman and bone loss increases the chances of fractures in women. One in two women who are above 50 in America breaks a bone due to osteoporosis. Therefore the correct answer is a. early menopause.

Useful mutations become established much more quickly in a population of microorganisms, such as the cluster of E-coli bacteria shown here, than they do in humans. The MOST LIKELY reason for this is that microorganisms

Answers

The answer is microorganisms have rapid cell cycle.

Microorganisms are much simpler and much smaller organisms than humans. Because of their size and complexity, they reproduce in extremely rapid pace. For example, E. coli population is able to double each 20 minutes. This is, of course, not the case with humans.
For the mutation to become established, there must pass a few generations. So, if a useful mutation establishes in E. coli cell, in 20 minutes it will be present in the next generation, in 40 minutes it will be present in the generation after that, and so on. In the humans, years (not minutes) are necessary for the mutation to be passed down to the first generation. It needs less time to establish a mutation in E. coli than in humans.

Answer:

B on USATestPrep

Explanation:

Thanks to the other person who answered, rapid cell cycle is asexual reproduction very fast.
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