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Assoli18 [71]
3 years ago
7

A single-celled organism can be classified as a prokarote based on the absence of the_______

Biology
1 answer:
ExtremeBDS [4]3 years ago
6 0

D: a nucleus

the prokaryote cell has no nucleus and for that matter no other membrane bound organelle

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Why are identical twins exactly similar while fraternal twins are dissimilar ??​
sergij07 [2.7K]

Answer:

Fraternal twins are “dizygotic,” meaning that they developed from two different eggs fertilized by two different sperm cells, while identical twins are “monozygotic” i.e., they developed from a single fertilized egg that split.

Explanation:

7 0
3 years ago
Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a
s344n2d4d5 [400]

Answer:

The correct answer is option - A. 0.

Explanation:

Producers are the organism that produces on their own. They do not depend on other organisms for their nutrition and energy such as green plants. They transfer energy and nutrition.

In the given scenario there is no producer present all are consumers of different levels. Cricket is a primary consumer, a spider is a secondary consumer and bird is the third consumer in this food chain.

Thus, the correct answer is option- A. 0.

4 0
3 years ago
A. Which form of nitrogen in the soil is NOT usable by organisms?
Colt1911 [192]

Answer:

A)Fixation. Nitrogen in its gaseous form (N2) can't be used by most living things

B) it can not be used because it most be converted or, ’fixed’  to a more useable form. To do this it goes through a process called fixation.fixation is the change in a gene pool from a situation where there exists at least two variants of a particular gene (allele) in a given population to a situation where only one of the alleles remains.

C) This form can be made more usable if it’s converted. It has to go through the process of fixation so the gene pool changes.

Explanation:

4 0
3 years ago
Read 2 more answers
For an assignment, Alexis has to write a scientific question. She writes, " How much fat in food can cause brain cancer ? " How
konstantin123 [22]

Answer:

Will eating too much fat in food cause brain cancer?

Explanation:

A good scientific question is one that can have an answer and be tested. Avoid how and why questions.

3 0
3 years ago
Match the following
Brilliant_brown [7]

Answer:

Matches according to the terms

Explanation:

1. Stratosphere: The layer of the atmosphere that the ozone layer is part of

2.Recycle:  the process by  which certain waste  materials, such glass, aluminum, and paper are  prepared for reuse

3. Hazardous: the type of solid, liquid, or gas wastes that are      

   toxic,flammable, corrosive, reactive, or radioactive

4. Biodegradable: The type of wastes that can be broken down by other organisms into a reusable form

5.Nicotine: The addictive drug found in tobacco

6. Cancer: A disease frequently developed by smokers and passive smokers.

7.Diabetes:  A disease of the pancreas in which insulin is not produced in

The correct amounts so that glucose can be converted into

energy or stored as fat (insulin not given in the option)

8.Ozone: Organic compounds (VOCs), and nitrogen dioxide (NO) are

acted upon by sunlight

9.Plastic: When burned, it can cause an increase of CO2, ozone, and  sulfur dioxide in the atmosphere

10. Fossil fuel: Sulfur dioxide,aluminium,

11.Ozone: formed in the atmosphere when chemicals, called volatile

7 0
3 years ago
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