The plasma membrane of a cell consists of

Answers

Answer 1
Answer: Lipids. They actually consist of two layers of lipids with the hydrophobic tails pointing inward towards each other so that the hydrophilic heads form a type of shield against water for the tails.

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Which event occurs in photosystem I?(A Water molecules are broken apart. (B Light energy excites electrons. (C Oxygen is released as waste. (D Electrons are transferred to ferredoxin.

1. The leaves of Mimosa plant closes up when touched this shows which characteristic of living thing?(a) grow (b) breath(c) respond (d) reproduce2. Which of the following is not an adaptive feature of polar bear?(a) It has thick layer of fur on its body(b) It has strong & sharp claws (c) It has a keen sense of smell(d) It has gills to respire under water3. Leaves are modified into spines in_____________.(a) Rose (c) Cactus(b) Bougainvillea (d) Succulents4. Which of these are biotic components of the environment?(a) Plants & Animals (c) Soil & Minerals(b) Air & Water (d) Sunlight & Temperature5. Which of the following is found in mountain regions?(a) Yak (c) both a & b(b) Snow leopard (d) None of these6. Dolphins breathe through_______________.(a) Gills (c) Moist skin(b) Blowholes (d) lungs7. Which habitat plants have hollow & light stems?(a) Desert (c) Aquatic(b) Grasslands (d) Mountain8. Which of the following is not an adaptation in frog?(a) Webbed feet (b) Strong back legs(b) Lungs (d) Gills9. Which of the following animal breathe through skin?(a) Earthworm (c) Grasshopper(b) Cockroach (d) Fish10. Animals that can live in water & land both?(a) Aquatic (c) Arboreal(b) Terrestrial (d) Amphibians11. Cone-shaped trees are found in_______________.(a) Mountains (c) Desert(b) Grasslands (d) both b & c​

Answers

1. Respond [C]
2. It has gills to respire under water. [D]
3. Cactus [C]
4. Plants and animals. (Biotic means living factors) [A]
5. Yaks [A]
6. Blowholes [B]
7. Aquatic [C]
8. Gills [D]
9. Earthworms [A]
10. Amphibians [D]
11. Both b and c [D]

Besides energy, what moves through the organisms at each trophic level of an ecosystem

Answers

Besides energy biomass also moves through each tropic level of an ecosystem .

What moves through the organisms at each trophic level of an ecosystem?

Trophic levels provide a structure for understanding food chains and how energy flows through an ecosystem. At the base of the pyramid are the producers, who use photosynthesis or chemosynthesis to make their own food.

How does energy move through an ecosystem?

Energy is transferred between organisms in food webs from producers to consumers.

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biomass is something else that moves through the organisms at each trophic level of an ecosystem.

2.Cells have semipermeable membranes that-
A
release ATP during the process of cellular respiration,
B
capture light energy in order to perform photosynthesis.
с
are the organelle responsible for cellular metabolism.
D
regulate the movement of material into and out of the cell.

Answers

I’m bad at biology so I don’t understand

Final answer:

Semipermeable membranes of cells regulate the movement of materials into and out of the cell, allowing the cell to maintain a balance of substances, a process known as homeostasis.

Explanation:

The function of the semipermeable membrane in cells is to regulate the movement of material into and out of the cell. While cellular respiration, photosynthesis, and cellular metabolism all happen within cells, they do not directly pertain to the function of the cell membrane itself. The membrane's semipermeable nature allows certain substances to pass through while preventing others, maintaining a balance of nutrients, ions, and other substances within the cell - a process known as homeostasis.

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If you ate bacon and fried eggs for breakfast, the largest component of the energy would come from the?

Answers

The largest energy component is the fats.

The answer options are carbs, fats, protein, or sugars.

The Northern Hemisphere is warmer in spring than in winter, because in springA) the days are shorter.
B) it gets more direct sunlight.
C) the Earth is closer to the Sun.
D) it is tilted away from the Sun.

Answers

Answer:

Option (B)

Explanation:

When the tilt of the earth is towards the sun, then it is called summer in the northern hemisphere. In this position, the sunlight is directly over the earth, as a result of which it absorbs more amount of heat. Spring is the season that starts from about 21st March to 21st of June or it can be considered as the season that exists between the summer and winter. Here, a high amount of sunlight is absorbed due to which the temperature eventually rises.

This is the reason why the northern hemisphere is relatively warmer during the spring season than in winter.

Hence, the correct answer is option (B).

B. It gets more direct sunlight. 

Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. How high or low is the probabilty that a female child of Charles and Marie would suffer from hemophilia? A. 0 percent B. 25 percent C. 50 percent D. 100 percent

Answers

Without a pedigree chart, it is not possible to answer this question. However, given this is a HS bio class question, they are probably looking for the simplistic answer "A", zero percent, based on the erroneous notion that women cannot have hemophilia. Women carriers of a defective gene coding for hemophilia frequently do themselves have mild or moderate hemophilia and, in very rare cases, severe hemophilia.