BIOLOGY HIGH SCHOOL

30? POINTS (APEX)if the fatty acids of the cell membrane were completely saturated, a cell would
A) dissolve in water
B) be more permeable
C) lose its water
D) be less permeable

Answers

Answer 1
Answer:

If the fatty acids of the cell membrane were completely saturated, a cell would be more permeable. Thus, the correct option is B.

What is a cell membrane?

A cell membrane may be defined as a biological membrane that untangles the interior of all cells from the external environment and shields the cell from its environment.

The presence of saturated fatty acids increases the membrane permeability due to the presence of only single bonds. It increases the transport of molecules between the inner and outer compartments of the cell.

Therefore, the correct option for this question is B.

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In the city of Birthville, an elderly midwife who has been working at the community center for several years noticed that there were no deliveries in the month of May in a particular year. In her discussion with the matron of the clinic, she said, "There were no deliveries in May of that year." In scientific process, her response can be classified as:_________-
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Explain why the oil floats after the stirring stops?

Answers

the reason that happens because oil is less denser than water
because oil is lighter than water so it floats to the top.

The sequence of an mRNA transcript is UGGCACUCCAG. What will be the sequence of the template DNA strand from which it was synthesized?A.UGGCACUCCAG
B.ACCGTGAGGTC
C.ACCGUGAGGUC

Answers

ACCGTGAGGTC
Therefore your answer is B, it will just be the complementary base pair, with uracil pairing with Adenine.
B. ACCGTGAGGTC is the correct answer

Which of the following is used in photosynthesis by both plants and cyanobacteria?a) Water, sunlight, and carbon dioxide
b) Water
c) Sunlight
d) Carbon dioxide

Answers

Both plants and cyanobacteria use water, sunlight, and carbon dioxide in photosynthesis. The correct answer is "a".

Both plants and cyanobacteria utilize water, sunlight, and carbon dioxide in the process of photosynthesis.

Photosynthesis is the biochemical process by which organisms convert light energy into chemical energy in the form of glucose.

Water:

  • Both plants and cyanobacteria absorb water from their environment through their roots or cell surfaces.
  • Water molecules are split during photosynthesis, providing a source of electrons for the light-dependent reactions and releasing oxygen as a byproduct.

Sunlight:

  • Sunlight is essential for photosynthesis as it provides the energy necessary to power the process.
  • Chlorophyll, the pigment found in plants and cyanobacteria, captures light energy and initiates the series of chemical reactions involved in photosynthesis.

Carbon dioxide:

  • Plants and cyanobacteria take in carbon dioxide from the atmosphere through small openings called stomata or through their cell surfaces.
  • Carbon dioxide serves as the carbon source for the synthesis of organic molecules during photosynthesis.

Thus, the correct option is a.

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Answer:

a)Water, sunlight, and carbon dioxide

explain the genetic events that enable so many different cell types to arise from one unspecialized cell

Answers

All cells in the body have the same genetic material, e.g. they have same DNA. However, not all genes are active at the same time and in all cells. Thus, different genes are transcribed in different specialised cells. There are transcription factors that control which genes will be transcribed and which will be suppressed. Also, specialised cells in an embryo release signalling proteins that help in cell differentiation.

Which structure is the site of nutrient and gas exchange between the mother and a growing fetus? A. placenta B. umbilical cord C. fallopian tube D. uterus

Answers

Answer:

A). Placenta

Explanation:

During pregnancy, the embryo formed as a result of zygote growth produced from fertilization is implanted in the UTERUS or WOMB of the female. The developing fetus is strictly dependent on the mother for all the substances it needs to survive. These substances reach the fetus via a structure present in the uterus. This structure is called PLACENTA.

Placenta is the connection between the mother and the developing fetus. It is an organ that helps the mother supply required nutrients and oxygen via the umbilical cord to the fetus. It also helps remove waste products from the fetus into the mother's blood. Hence, the PLACENTA is the site of nutrient and gas exchange (oxygen and CO2) between the mother and the fetus.
(A)Placenta is your answer......

Animals make the ______________ that plants need, and plants make the ______________ that animals need.

Answers

Carbon dioxide, oxygen. This is the connection between cell respiration and photosynthesis
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