BIOLOGY COLLEGE

1) Using a ruler to measure the length of a stick is an example of A) predicting the length of the stick by guessing B) measuring the rate of change of the stick by making inferences
C) extending the sense of sight by using an instrument
D)calculating the percent of error by using a proportion​

Answers

Answer 1
Answer:

Using a ruler to measure the length of a stick is an example of extending the sense of sight by using an instrument

  • Humans possess five major sense organs namely: tongue, eyes, nose, skin and ear. Each of these senses serve different purposes, however, scientists do not entirely use them for scientific measurements.

  • Scientists make use of instruments to extend their senses, which they use for perception only.

  • For example, a ruler is used to measure the length of a stick in order to extend our knowledge of the stick, which was gained by sighting the object.

  • Therefore, using a ruler to measure the length of a stick is an example of extending the sense of sight by using an instrument.

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Answer 2
Answer:

Final answer:

Using a ruler to measure the length of a stick extends the sense of sight by using an instrument. The individual making the measurement must estimate the final value, introducing some uncertainty. The ruler’s precision is indicated by the number of significant figures it can report.

Explanation:

Using a ruler to measure the length of a stick is an example of C) extending the sense of sight by using an instrument. This falls under the category of indirect measurements where an instrument, in this case a ruler, is used to enhance our basic senses. It is important to note that the person performing the measurement must use their judgment to estimate the final value based on what the instrument shows, considering its degree of precision.

For instance, if the ruler shows the stick is between 36mm and 37mm in length, the individual has to estimate this final digit, which introduces a level of uncertainty. This level of uncertainty also reflects the ruler's precision, which is indicated by the number of significant figures it can report. The more precise a measuring tool is, the greater the number of significant figures it can report which in turn results in greater accuracy.

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A. integumentary, respiratory, digestiveB. Circulatory, respiratory, nervousC. Integumentary, nervous, muscularD. Circulatory, digestive, nervous
The mining and use of fossil fuels by humans has disrupted whichbiogeochemical cycle? sulfur nitrogen carbon hydrologic

Most ocean water is located in which zone? A. deep zone B. surface zone C. transition zone D. mixed zone

Answers

Answer:

Deep

Explanation:

Answer:A

Explanation: CAPPING

Which two ions are most affected by aldosterone?a. sodium and potassium
b. chloride and bicarbonate
c. calcium and phosphate
d. sodium and phosphate

Answers

Answer:

Sodium and potassium.

Explanation:

Aldosterone hormone is produced by the adrenal cortex (zona glomerulosa ) cells of the kidney. This is the main mineralocorticoid and the steroidal hormone.

Aldosterone is mainly involved in the regulation of sodium and potassium ions. The sodium ions are reabsorbed and potassium ions is secreted by the influence of aldosterone hormone.

Thus, the correct answer is option (a).

Which of the following processes is/are example(s) of diffusion and/or osmosis that occur in your cells? Mark all that applya. O2/CO2 moving in/out of your blood cells as they flow through your lungs.
b. Na+ (sodium) & K+ (potassium) ions moving between the inside and outside of you nerve cells creating electrical impulses.
c. H2O moving in and out of all your cells to maintain homeostasis.
d. All of the above
e. None of the above

Answers

The examples of diffusion/osmosis that occurs in our cells are as follows:

  1. O2/CO2 moving in/out of your blood cells as they flow through your lungs
  2. H2O moving in and out of all your cells to maintain homeostasis.

DIFFUSION/OSMOSIS:

  • Diffusion is the process by which gaseous molecules move from a region of higher concentration to low concentration until they are evenly distributed.

  • Osmosis, on the other hand, involves the movement of water from region where it is more concentrated to region where it is less concentrated via a semipermeable membrane.

  • Both osmosis and diffusion are forms of passivetransport, meaning that movement occurs down a concentration gradient.

  • The following are examples of diffusion/osmosis that occur in human cells:
  1. O2/CO2 moving in/out of your blood cells as they flow through your lungs
  2. H2O moving in and out of all your cells to maintain homeostasis.

Note that, option B is a form of active transport.

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the answers are (a.) and (c.)

In the 1950s, when Watson and Crick were working on their model of DNA, which concepts were well accepted by the scientific community?

Answers

Wilkins and FranklinName: Maurice Wilkins and Rosalind Franklin
Date: 1951
Description: 
- Wilkins was working with a technique called X-ray diffraction: a technique that involved aiming X rays at the DNA molecule
- Franklin took the now famous Photo 51 and collected data eventually used by Watson and Crick
- Photo 51 indicated that DNA was a double helix, or twisted ladder shape, formed by two strands of nucleotides twisted around each other
- The specific structure of the DNA double helix was determined later by Watson and Crick when they used Franklin's data and other mathematical data

Final answer:

In the 1950s, several key concepts related to DNA were well understood in the scientific community, such as the polymer structure of DNA, base pairing rules, and the helical structure of the molecule itself. The established methods like X-ray crystallography also contributed to their research.

Explanation:

In the 1950s, when Francis Crick and James Watson were working on their model of DNA, the scientific community had a well-established understanding of several key concepts. For example, it was well accepted that DNA is a polymer of nucleotides, each containing deoxyribose sugar, phosphate group, and one of four nitrogenous bases, A, T, C, and G; and that purines always pair with pyrimidines.

X-ray crystallography was an accepted method for investigating molecular structure. Chargaff's rules, which state that of the four types of nucleotides present in a DNA molecule, two were always present in equal amounts, were also widely accepted. Finally, it was known that the DNA molecule has a helical structure, thanks to the work of Rosalind Franklin.

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Domain _______________ includes both unicellular and multicellular organisms.

Answers

Kingdom Protista includes all the organisms mentioned
The credit goes to nanazurg

Which two statements explain how the uneven heating of Earth's surfaceaffects Earth's weather patterns?
A. Warm air continuously leaves the poles and moves toward the
oceans.
B. Warm air rises and cool air sinks, forming a convection current
C. Warm air moves away from the equator toward cooler regions.
D. Warm air flows from the northern hemisphere to the southern
hemisphere.

Answers

I am unsure about the actual question,
But if you need to choose two answers, I would do B and C
B; convection currents are responsible for many things like air flow, the amount of humidity, and so much more.
C; Warmer air moves through these convection currents towards cooler regions, which affects the temperature.

The two answers work hand in hand-
So if that is what the question is asking, the answers are B and C

Explanation:

I think it is b because when warm air rises it always affects the earths weather pattetn
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