Which one of the following statements is accurate? A. Agriculture has been challenged by the use of selective breeding.
B. Gymnosperms provide humans with the most food.
C. The green revolution was instrumental in the increase of the world's food supply.
D. Wheat, corn, soybeans, and cabbage are the main four plants responsible for providing food to people in the world

Answers

Answer 1

Answer: C.) The green revolution instrumental in the increase of the worlds food supply.

Answer 2

Answer:

i think the answer is C: The green revolution was instrumental in the increase of the world's food supply.

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Scientists were conducting a multiyear study on the effectiveness of a new drug for long-term memory loss. Theygave some of the test subjects the new drug to find out if it improves their long-term memoryWhich is a possible limitation of this study?O Test subjects may want to participate in additional experiments.O Test subjects may find that the drug is not effective.O Test subjects may get bored and want to quit early.O Test subjects may have full-time jobs.

What roles do polysaccharides play in living things?

Answers

Polysaccharides play crucial roles in living things due to their diverse functions and properties. As complex carbohydrates made up of multiple sugar units, they serve as important sources of energy and structural components in organisms.

1. **Energy Storage:** One primary role of polysaccharides is to store energy for short-term and long-term use. Plants store excess glucose in the form of starch, while animals store it as glycogen in the liver and muscles.

2. **Structural Support:** Polysaccharides provide structural support in cell walls of plants, algae, and some bacteria. For example, cellulose forms the rigid cell walls of plant cells, giving them shape and support.

3. **Protection and Lubrication:** Some polysaccharides, like chitin found in the exoskeletons of insects and crustaceans, provide protection and structural support. Hyaluronic acid, a polysaccharide in connective tissues, acts as a lubricant and shock absorber.

4. **Cell Recognition:** Polysaccharides are also involved in cell recognition and signaling processes. They form part of cell surface markers and play essential roles in immune responses and cell communication.

Overall, polysaccharides are essential biomolecules that fulfill diverse functions, contributing to the proper functioning and structure of living organisms.

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There is starch which is excess sugar that is stored in plant, cellulose which makes up the plant cell wall and glycogen that can be broken down into energy for the body.

Rich and Sandra are doing a standard biology lab, where the letter 'e' is cut out of a newspaper and placed under a light microscope as a wet-mount. When placed under the microscope, the letter 'e' will appearA) upside down and backwards
B) backwards and right side up
C) just as it appears in print
D) upside down and right side up

Answers

The answer is (a.) upside down and backward.
A microscope uses a convex lens that why the letter 'e' appears upside down and backward. These type of lens are used in almost every microscopes such as complex and compound microscopes. Images place under a microscope always appear in reversed and inverted.

When a letter 'e' is viewed under a light microscope, it appears upside-down and backwards. This is due to the optics of the microscope's lenses which invert the image orientation.

The letter 'e' in a standard biology lab, when viewed under a light microscope, will appear upside down and backwards.

The optics of the Microscope Image Inversion lenses invert the orientation of the image.

A specimen that is right-side up and facing right on the slide will appear upside-down and facing left when viewed through the microscope, and vice versa.

This is due to the manner in which light travels through the two sets of lenses that a microscope uses to magnify the image.

Hence, it's a common occurrence in light microscopy that the image viewed is inverted.

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When a raw, shell-less egg was placed in sugar solution, the egg shrank. The egg was brought back to its original size by placing it in water. Which process does the experiment demonstrate? A) osmosis B) diffusion C) dehydration D) reverse osmosis

Answers

A: osmosis. The egg first expanded because it was placed in a hypertonic solution (sugar water), causing the water to exit the egg to balance the higher concentration of solute outside of the egg. Placing it in fresh water creates a hypotonic environment, thereby causing water to rush back in.

Answer:

Explanation:

osmosis

The principal characteristic that differentiates temperate and tropical rainforests is __________

Answers

Answer;

Latitude

The principal characteristic that differentiates temperate and tropical rain-forests is latitude.

Explanation;

There are two types of rain-forests, namely, the tropical rain-forests and the temperate rain-forests. These two types share some similarities such as being rich in plant and animals species with a greater diversity in tropical rain forest.
However they differ in a number of ways; tropical rain-forests are warm and moist; while temperate rain-forests are cool.
Tropical rain-forest, forested areas must: Lie between the Tropic of Cancer and the Tropic of Capricorn, receive rainfall regularly throughout the year, remain frost and free through out the year with little fluctuations.

The principal characteristic that differentiates temperate and tropical rainforest is latitude

What structure is used by ribosomes as the instructions for making proteins ?

Answers

I believe that it is RNA

What characteristics do these islands in the diagram share?

Answers

RNA-guided Cas9 endonuclease and a single-guide RNA (sgRNA)

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