| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
In the food chain, omnivores may be which of the following?
secondary consumers or scavengers |
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secondary or tertiary consumers |
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primary or tertiary consumers |
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primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
In which type of compound does one atom borrow an electron from another atom?
covalent |
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acidic |
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ionic |
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chemical |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
In a eukaryotic cell, which organelles deal with proteins?
Golgi apparatus |
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endoplasmic reticulum |
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all of these deal with proteins |
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ribosomes |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles. Ribosomes produce proteins, endoplasmic reticulum helps synthesize proteins and fats, and Golgi apparatus prepares proteins for use.
Which of the following is the correct order for types of radiation from longest to shortest wavelength?
microwaves → radio waves → visible light |
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radio waves → visible light → gamma rays |
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infrared waves → microwaves → ultraviolet light |
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visible light → ultraviolet light → radio waves |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.
Which of the following is not part of the carbon cycle?
photosynthesis |
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decomposition |
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respiration |
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precipitation |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.