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gogolik [260]
3 years ago
7

True/False: RNA contains uracil instead of thymine. a. True b. False

Biology
2 answers:
sergey [27]3 years ago
5 0
The answer would be A. True
gtnhenbr [62]3 years ago
3 0

Answer:

True

Explanation:

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What are the 10 central themes of biology and can you explain them?
nlexa [21]

Answer:

1. Emergent Properties

2. The Cell

3. Heritable Information

4. Structure and Function

5. Environmental Interactions

6. Feedback and Regulation

7. Unity and Diversity

8. Evolution

9. Inquiry

10. Science, Technology, and Society

Explanation:

1. The fact that complex organisms derive from small, simple bases.

2. Basic unit of life

3. Found in dna of all living organisms, passed from generation to generation.

4. All parts of organisms serve a purpose. (heart pumps blood)

5. All organisms are involved with their surroundings (plants use sunlight for energy

6. Bodies give us feedback on whether or not things are safe for habitation. (its too hot or cold)

7. All organisms may differ in looks but we are made up of similar DNA

8. explains how organisms develop over decades

9. scientists search for new information

10. We learn about the world through biology.

8 0
3 years ago
Drag the numbers to put the following steps in the correct order.
deff fn [24]

Answer:

- In glycolysis, glucose is split into two pyruvate and makes some ATP

- The Krebs cycle produces ATP, NADH and CO2

- NADH gives electrons to the ETC

- As electrons move down the ETC, a H+ gradient is made

- H+ pass through the ATP synthase to make ATP

Explanation:

This question is describing the processes involved in cellular respiration. Cellular respiration is the way through which living cells synthesize energy (ATP) by breaking down sugar. Cellular respiration involves three major steps: glycolysis, Krebs cycle, and oxidative phosphorylation (electron transport chain).

- Glycolysis is the process whereby glucose is broken down into pyruvic acid or pyruvate with the synthesis of net 2 ATP molecules.

- Kreb's cycle produces ATP, NADH and CO2.

- NADH is an electron carrier that donates electrons to the Electron transport chain (ETC).

- Electrons move down the ETC to produce a proton (H+) gradient

- The proton (H+) passes through an enzyme called ATP synthase to make ATP from ADP molecule.

4 0
3 years ago
What is involved in creating genetically modified bacteria?
eduard

Answer:

A small piece of circular DNA called a plasmid? is extracted from the bacteria or yeast cell. A small section is then cut out of the circular plasmid by restriction enzymes, 'molecular scissors'. The gene for human insulin is inserted into the gap in the plasmid. This plasmid is now genetically modified.

Explanation:

7 0
2 years ago
Sanctuaries are established to?
bezimeni [28]

Answer:

The wildlife sanctuaries are established to protect the endangered species.  A few sanctuaries take in injured and abandoned animals and rehabilitate them to health before releasing them in the forest. Wildlife sanctuaries preserve the endangered species and protect them from humans and predators.

hope this helps

good luck

4 0
3 years ago
Describe the principle of MPN for enumerating bacteria from a natural sample.
KengaRu [80]

Answer:

MNP stands for the most probable number which is used for finding out the concentration of viable bacteria in a sample. It is commonly used to check the quality of water and its safety. Usually, the presence of fecal coliform bacteria is checked in this test.  

Principle of MNP: The sample which is to be tested is diluted serially and then inoculated into a broth medium containing lactose. If coliforms are present in the tube than it will consume lactose and release acid and gas.

Color change represents acid production and gas trapped in the Durham tube represents the gas production by bacteria. Then the number of tubes at each dilution that showed positive results are compared with standards to determine the most probable number of the bacteria.

5 0
3 years ago
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