Which of the following are made of repeating sugar units? Choose all answers that are correct. A. proteins B. nucleic acids C. carbohydrates D. lipids

Answers

Answer 1
Answer: Carbohydrates carbohydrates are repeating sugar units. They are the only ones that are repeating sugar units
Answer 2
Answer: C.Carbohydrates
They are the only one that repeats the sugar units

Hope this helps






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I need help with answering the given question.
Do blood cells have a rigid cell wall ?

Which of the following describes the energy transformation that takes place when a boy eats an apple and then lifts weights?1. Chemical energy is converted to mechanical and heat energy.
2.Chemical energy is converted to mechanical energy.
3. Chemical energy is converted to heat energy.
4. Chemical energy is converted to mechanical and kinetic energy.

Answers

the correct answer is 1. Chemical energy is converted to mechanical and heat energy.

When the boy eats apple, the chemical energy of the apple first converted in the heat energy in the process of digestion, which maintains our body temperature, than the body of the boy converts the heat energy into mechanical energy.

Therefore the correct option is 1.

Answer:

Chemical energy is converted to mechanical and heat energy.

Explanation:

Compare and contrast formation of with the formation of mgcl2

Answers

Answer: Both of the compounds contain primary bonding; however, the bonding is of different types. Magnesium chloride (MgCl₂) contains ionic bonds, which are stronger and involve the complete transfer of electrons. Meanwhile, ethane (C₂H₆) also bonds by electron transfer but the electrons are not completely transferred from one atom to another. Instead, they are shared, forming what is known as a covalent bond.  

Help?? When vibrational motion in an object increases, which is a true statement? A.
Kinetic energy and temperature decrease; thermal energy increases.

B.
Kinetic energy, temperature, and thermal energy decrease.

C.
Kinetic energy and temperature increase; thermal energy decreases.

D.
Kinetic energy, temperature, and thermal energy increase.

i think its D, but im not sure.

Answers

The answer should be "D", Because the vibration would heat up the object causeing the temperature and thermal energy to increase. Since the object is moving (Vibration), then it is using kinetic energy, so that also increases.

List the objects found in the universe in order of size

Answers

This is apartial list of Solar System objects by size, arranged in descending order of mean volumetricradius, and subdivided into several size classes. These lists can also be sorted according to an object'smassand, for the largest objects,volume,densityandsurface gravity, insofar as these values are available. This list contains theSun, theplanets,dwarf planets, many of the largersmall Solar System bodies(which includestheasteroids), all namednatural satellites, and a number of smaller objects of historical or scientific interest, such ascometsandnear-Earth objects.The ordering may be different depending on whether one chooses radius ormass, because some objects are denser than others. For instance,Uranusis larger thanNeptunebut less massive, and althoughGanymedeandTitanare larger thanMercury, they have less than half Mercury's mass. This means some objectsin the lower tables, despite their smaller radii, may be more massive than objects inthe upper tables because they have a higher density.Manytrans-Neptunian objects(TNOs) have been discovered, and their approximate locations in this list are shown, even though there can be a large uncertainty in their measurement.Solar Systemobjects more massive than 1021kilograms(oneyottagram [Yg]) are known or expected to be approximately spherical. Astronomical bodies relax into rounded shapes (ellipsoids), achievinghydrostatic equilibrium, when the gravity of their mass is sufficient to overcome the structural strength of their material. Objects made of ice become round more easily than those made of rock, and many icy objects are spheroidal at far lower sizes. The cutoff boundary for roundness is somewhere between 100 km and 200 kmin radius.[1]The larger objects in the mass range between 1018kgto 1021 kg (1 to 1000zettagrams [Zg]), such asTethys,Ceres, andMimas, have relaxed to anoblate-spheroidequilibrium due to their gravity, whereas the less massiverubble piles(e.g.AmaltheaandJanus) are roughly rounded,but not spherical, dubbed "irregular".

How can thermal energy be transferred

Answers

Thermal energy can be transferred by conduction

Evaporation: Large amounts of water evaporates from the Earth's ________, _______, __________ every day. The water vapor (evaporation) becomes part of the ________.

Answers

my guesses would be 

surface,oceans,rivers,atmosphere

Possible answers:

oceans/seas/lakes/rivers

atmosphere/sky

Explanation:

Most of the air's moisture evaporates from rivers, lakes, seas, and oceans. Water at the surface of the Earth evaporates into water vapor, which rises into the sky and forms clouds, which eventually release water back onto Earth as precipitation.