Which of the following best describes the function for the organelle labelled ‘D’?(a) moves substances across the cell membrane
(b) transports materials around the cell
(c) controls all cell activities
(d) packages materials for export from the cell

Answers

Answer 1
Answer: a) moves  substances across the cell membrane

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Which of the following best describes what Einstein’s theories tried to explain?A) the creation of the universe B) evolution and human development C) how the physical world functions D) the possibility of time travel
What is lab safety important
If an oxygen atom has 8 protons and 8 neutrons in the nucleus, what is the mass number ofoxygen?
Which of the following describes a negative Feedback loop? A) When the heart rate is too high the body since hormones that continually increase the heart rate higher B)When a pregnant woman is a labor in the body since hormones that increase the intensity of contractions which then increases the secretion of the same hormones C)When blood sugar is too low the body since hormones that raise blood sugar until it reaches a typical level and hormone secretion slows D)When a person is jogging the body since four months to continually do you kris the rate of oxygen supply to the legs
What condition should be met for the stellar parallax method to be useful?A.the star should be situated within the Milky WayB.the star should be brighter than the SunC.the star should be close enough to the Sun to show a measurable parallaxD.the star should be visible with the naked eye

Sexual reproductiononly requires one parent

produces an exact copy of the parent organism

requires the sperm and egg cells

is the same as mitosis

Answers

Best answer Sexual Reproduction... requires the sperm and egg cells.

Which specialized carbohydrate is used for structure in shrimp?

Answers

Answer: Chitin

Explanation:

Carbohydrates can be defined as the class of bio molecules which includes sugar, cellulose, chitin and many forms.

Chitin is the major constituent of the exoskeleton. It is made of polysaccharide. It is a type of exoskeleton which is is found in arthopods which provides support to the shrimp.

This polysaccharide is chitin.

The specialized carbohydrate used for structure in shrimp is chitin. Chitin is a long-chain polymer of N-acetylglucosamine, which is a derivative of glucose.

How do we explain?

Chitin provides strength and flexibility to the exoskeleton, allowing the shrimp to move and grow while still being protected and is also found in the exoskeletons of other arthropods, such as crabs and lobsters. It is also found in the cell walls of some fungi and algae.

Chitin is a very strong material. It is even stronger than steel, pound for pound. However, it is also very lightweight. This makes it an ideal material for the exoskeletons of shrimp and other arthropods.

The exoskeleton of a shrimp is made up of several layers of chitin. The outermost layer is the hardest layer. It is called the epicuticle. The epicuticle is made up of a waxy substance that helps to protect the shrimp from water loss and from predators.

Learn  more about  Chitin at:

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Is the bag or beaker more concentrated in starch ?

Answers

The bag is more concentrated in starch than the beaker. This is because the bag contains a solution of starch and water, while the beaker contains only water.

The starch molecules are unable to pass through the plastic bag, so they remain concentrated in the bag. The water molecules, however, are able to pass through the bag, so they diffuse into the beaker, making the solution in the beaker less concentrated in starch.

If you were to leave the bag and beaker for a long enough period of time, all of the starch molecules would eventually diffuse into the beaker, and the concentration of starch in both the bag and beaker would be the same. However, in practice, this would take a very long time, as the rate of diffusion is relatively slow.

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I'm assuming this is from a diffusion lab? I did one a little while back, which may or may not be the same. However, we found that the baggie was more concentrated in starch and the beaker was more concentrated in iodine. 

Which of these corrects the shift of voice in the following sentence?Nakamura was praying for protection when the front door was flung open by force.

Nakamura was praying for protection when the front door was flung open by the police.
A prayer for protection was being said by Nakamura when a force flung the front door open.
Nakamura was praying for protection when a force flung the front door open.
A prayer for protection was being said by Nakamura when the police flung the front door open.

Answers

Answer:

Option B, A prayer for protection was being said by Nakamura when a force flung the front door open.

Explanation:

A shift in voice of a sentence or statement is considered when there is a change in the tense, person and voice of the  sentence or statement.

Here the given statement is in active voice and in the option chosen the voice is passive. Here the voice is changing from active to passive which is the requirement of producing a shift in voice , thus, option B is correct.

Nakamura was praying for protection when the front door was flung open by the police.

The environments helped to ___________ the traits of the organisms that live in them.Group of answer choices

reduce

eliminate

duplicate

shape

Answers

The environments helped to SHAPE the traits of the organisms that live in them.
Reduce is the answer

Which of the following is caused by the modification of density-independent factors?

Answers

The one that is caused by the modification of density-independent factors is : parasitic wasp invade cocoons, killing caterpillars
Density independent factors refer to occurrences that limit the number of a specific population

hope this helps