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vampirchik [111]
3 years ago
7

Robert, an aspiring scientist in a biology class, wanted to conduct a study on the effects of cigarette smoke on the web-buildin

g ability of spiders. Which of the following statements is an incorrect use of terms pertaining to the scientific method?
Biology
1 answer:
Evgesh-ka [11]3 years ago
5 0

Answer:

<em>The statement that is incorrect is :</em>

<em>Robert wanted to see if his theory was true that cigarette smoke will influence web-building in spiders.</em>

Explanation:

A theory can be described as a descriptive explanation of a phenomenon which is supported by valid experiments and careful examination of facts. As Robert, has not conducted any experiments nor has proved his study with reference to facts, hence it cannot be considered as a theory.

Robert wanted to see if his observation was true that cigarette smoke will influence web-building in spiders will be the correct statement that could be used.

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At noon on a sunny day, Marcia walks barefoot down the street to her friend's house. The pavement is so hot she can barely stand
ale4655 [162]

Answer:

Their is no sun to heat the pavement.

7 0
3 years ago
During mitosis, chromosomes are moved and separated through the use of spindles composed of ________________ structures.
sesenic [268]

During mitosis, chromosomes are moved and separated through the use of spindles composed of microtubule structures.

Explanation:

Throughout mitosis, the chromosomes are initial replicated (copied) and so distributed into a pair of new "daughter" cells. They're replicated throughout the S section of interphase, and within the following phases (prophase, metaphase, anaphase, telophase) are organized, separated, and repackaged at opposite ends of the cell, at that purpose the cell divides. The strand of chromosomes split just like the cell throughout the cellular division. They split in half.

8 0
3 years ago
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GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new automated system that can detect bor
SashulF [63]

Answer:

The minimum mass of dissolved cholesterol that the new system must be able to detect is 0.43 milligrams.

Note: The question is incomplete. The complete question is:

<em>GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new automated system that can detect borderline high levels of dissolved cholesterol (170, to 200. mg/dL), using a blood sample that is as small as 250 μL Calculate the minimum mass in milligrams of cholesterol that the new system must be able to detect Be sure your answer has the correct number of significant digits.</em>

Explanation:

Range of the equipment to detect cholesterol in blood = 170.0  to 200.0 mg/dL

Minimum amount of cholesterol that can be detected by instrument = 170 mg/dL

Volume of blood sample = 250 <em>μ</em>L= 0.0025 dL (1 dL = 100000 <em>μL)</em>

Amount of dissolved cholesterol in 250 <em>μL</em> sample of blood =

170 mg/dL * 0.0025 dL =  0.425 mg

The minimum mass of cholesterol that the new system must be able to detect is 0.43 milligrams.

7 0
3 years ago
A young girl was born with a patch of soft fur that ran from the base of her neck to her tailbone. she did not display any other
irga5000 [103]
The doctor <span>suspected that this characteristic was the result of a</span> somatic mutation that happened in the developing embryo, but probably wouldn't affect the daughter's egg cells.
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3 years ago
Photosynthesis occurs inside of which organelle? a chloroplasts b the cell wall c mitochondria d ribosomes
Delvig [45]

Answer/Explanation:

Chloroplasts are the organelle that uses chlorophyll. Chlorophyll is in the process of photosynthesis.

6 0
3 years ago
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