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yulyashka [42]
3 years ago
9

You can buy a fish from the pet store

Biology
1 answer:
Lena [83]3 years ago
3 0

Answer:

barter trade

Explanation:

because you exchange goods

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PLEASE HELP ASAPPP !!! 15 POINTS !!!
sasho [114]

***see attached pic***

Some helpful tips:

The nucleus is always going to be the big, spherical shape.

The ER is always going to be a weird, folded looking structure attached to the nucleus (rough = has ribosomes on it which are usually represented by little dots, smooth = has no ribosomes on it aka no dots)

The GA looks like the ER but it is not going to be attached to the nucleus like the ER is.

The mitochondria is always going to be pill-shaped and have weird folds inside of it.

8 0
3 years ago
The following statements pertain to the development of the theory of the structure of DNA. Match the statement with the appropri
Mila [183]

Answer:

The correct answer will be-

1. Observation-option B.

2. Hypothesis-option A.

3. Experiments- option C.

Explanation:

A scientific method involves various steps to explain a natural phenomenon of nature. It begins with making an observation which leads to asking the scientific question. The researcher does background research and proposes a hypothesis which could be tested through experiments. The experiments could prove or disprove the hypothesis based on the results.

In the given question the observation made is an equal amount of A and T and G and C are observed. It leads to a hypothesis which shows that this could have happened due to the winding of two strands of DNA and the experiments was performed through X-ray diffraction pattern.

Thus, the selected options are the correct answer.

5 0
4 years ago
What can be predicted by regular patterns of the moon<br><br><br> PLS HELP ME
koban [17]

Answer:

its an illuminated

Explanation:

An easy way to remember and understand those "between" lunar phase names is by breaking out and defining 4 words: crescent, gibbous, waxing, and waning. The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the moon is more than half illuminated.

3 0
3 years ago
Read 2 more answers
QUESTION 31 Chipmunk mitochondrial DNA was fingerprinted using the single primer amplified region technique (SPAR) and the PCR r
natima [27]

Answer:

It depends on the size of the amplified DNA fragments (for example for SPAR markers consisting of 200 bp in length >> 1600 / 200 = 8)

Explanation:

The PCR based single primer amplification reaction (SPAR) methods are tools for detecting genetic diversity by using DNA markers such as Simple Sequence Repeats (ISSRs), Minisatellite DNA regions (DAMDs) and Random Amplified Polymorphic DNAs (RAPDs), which can be used alone or combined with each other. In the last years, the SPAR methods have gained attention in the scientific community because they are cost-effective and highly effective for the detection of both intraspecific and interspecific genetic variation. In the SPAR methods, the size of the bands will depend on the length of the amplified DNA fragments.

6 0
3 years ago
Recall the Jagendorf experiment (pasted below) was conducted wholly in the dark. Hypothesize what would happen if you were to mi
Alla [95]

Answer:

ATP production.

Explanation:

The result will be the production of ATP molecules if we place thylakoids in a beaker with a solution that mimics the chloroplast stroma in direct sunlight. The thylakoids are able to formed ATP in the dark because H+ gradient is required for ATP synthesis. The scientists find out that the light reactions were not necessary to establish the H+ gradient required for ATP synthesis by ATP synthase.

6 0
3 years ago
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