Molecules that diffuse (through) the cell membrane directly are hydrophobic molecules (CO2, O2), and very small polar molecules (water, ethanol).
What is a molecule?The molecule is the smallest part of a compound that is composed of a combination of two or more atoms. Molecules are divided into two, namely compound molecules and elemental molecules. The difference between compound molecules and elemental molecules is the elements that compose them.
Molecules that can pass through the cell membrane are hydrophobic molecules and very small polar molecules, for example, water and ethanol. Meanwhile, other molecules, such as large polar molecules (glucose), ions, and hydrophilic substances, require special mechanisms to enter cells.
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TEST - chapter 8
32 of 32
POSSIBLE POINTS: 3
What are the three factors that affect the rate of photosynthesis? (Hint: These are clearly listed toward
the end of your notes).
Answer:
light intensity, carbon dioxide concentration and temperature
though water is a big one too but would be 4th on the list imo
CO2 is an interesting one as it's amounts go down precipitately over say a corn field or other mass of photosynthesizing organisms during the day and increases at night when photosynthesis stops
Explanation:
Match the following vocabulary words with the correct definitions.
condensation
evaporation
1. decaying or rotting
2. bacteria found in legume nodules
3. transformation from a liquid to a gas
decomposition
precipitation
4. water falling from the atmosphere
5. transformation from a gas to a liquid
rhizobium
fungi
6. plant-like organisms without chlorophyll
Evaporation is transforming from a liquid to gas.
Condensation is transformation from liquid to gas.
Decomposition is decaying or rotting.
Presipitation is water falling from atmosphere.
Fungi is plant-like organisms without chloroplast.
Rhizobium is bacteria found in legume nodules.
Which of the following are examples of a physical property of matter?
Iron (Fe) combines with Oxygen (O) to form rust.
the apple is red in color.
Copper (Cu) conducts electricity.
An apple oxidizes (turns brown) once it is cut and exposed to Oxygen (O).
Nickel (Ni) is magnetic.
Magnesium (Mg) combusts when exposed to Oxygen (O).
Water boils at 100ºC.
Answer:
the apple is red
copper conducts electricity
nickel is magnetic
water boils at 100
Explanation: the rest are chemical properties
reproducing a sexuality in sexuality will likely use what type of reproduction when the environment is experiencing change asexual be sexual?
Answer:
Asexual
Explanation:
Which is true about Mitosis?
Mitosis makes 4 new somatic body cells like heart cells
Mitosis makes 2 new somatic body cellshke skin cells
Mitosis makes 2 new sex cells like sperm
Which geological feature would most likely occur at this boundary? (the plates are the same density.)
A) mid-ocean ridge, rift vallyes
B) earthquakes
C) volcanos
D) mountain chains
Answer:
a
Explanation:
please help:) i know it’s not biology but i don’t know what subject to put it under lol
Answer:
D. Overcast skies with strong winds.
Explanation:
clouds, high winds, and precipitation occurs if there is low air pressure is present. A low air pressure areas or regions is also known as cyclogenesis because when the intensity of low air pressure occurs, there is high chances of formation of storms or hurricanes in that region. A low air pressure system refers to a large mass of air that rises due to warmer land or water.
angie's mom can roll her tongue will angie be more likely to have that ability or more likely not to have that ability
Answer:
50 50 chance
Explanation:
Describe a grassland ecosystem briefly.
A grassland is a biome, an area of land that mostly has grasses. There are wild grasses, and there may be some trees. Several parts of the world have grasslands. Grasslands are found in Africa, North America, Central Asia, South America, and near the coasts of Australia.
Frequency and Wavelength Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out more information about items, some have more details available when you click on them. Drag and drop each item onto the proper area of the diagram. If an item describes more than one category, be sure to place it in the overlapping space. ITEM BANK: Move to Bottom Affects the energy of a wave Decreasing this will increase the energy of a Wave Describes how rapidly a wave oscillates (moves up and down or back and forth) Describes the distance between two back to back identical parts of a wave Increasing this will increase the energy of Unit is Hertz a Wave Unit is meter
Answer:
Frequency:
Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)
Both: Affects the energy of a wave
Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave.
Answer:
Frequency:
Unit is Hertz, Increasing this will increase the energy of a wave ,Describes how rapidly a wave oscillates (moves up and down or back and forth)
Both: Affects the energy of a wave
Wavelength: Unit is meter, Decreasing this will increase the energy of a wave, Describes the distance between two back to back identical parts of a wave
Explanation:
Which is a black rat snake considered?
carnivore
herbivore
omnivore
Answer:
Carnivore
Explanation:
Carnivore is an animal that eats meat.
Omnivore eats both plants and meat.
Herbivore only eats plants.
Hope this helps :)
What is the most basic level of biological organization?
Molecule
Cell
Atom
Organism
Explanation:
A cell is the most basic level of biological organization
The most basic level of biological organization is the cell, which is in the third option, as the cell is the smallest unit of life that can perform all the functions necessary to maintain life.
What is the significance of the cell in biotic substances?The cell is the most basic level of biological organization among the biotic life forms and is the building block of all living organisms such as plants, animals, and humans that contain genetic material, known as DNA, which stores and transmits information from one generation to the next and also cell contains many other essential organelles.
Hence, the most basic level of biological organization is the cell, which is in the third option, as the cell is the smallest unit of life that can perform all the functions necessary to maintain life.
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How does natural selection lead to an increase or decreased in heritable traits over time in a population?
Answer:
Not a copy and paste answer
Explanation:
When resources are limited in an habitat, organisms with heritable traits favor more survival and reproduction will tend to leave more offspring then other organisms only because of their heritable traits.
How many molecules are represented?
2Fe(NO3)2
Taking into account the definition of Avogadro's number, 2 moles of Fe(NO₃)₂ contains 1.2046×10²⁴ molecules.
Avogadro's NumberAvogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance.
Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Amount of moles in this caseIn this case, you have 2 moles of Fe(NO₃)₂.
Then you can apply the following rule of three: If 1 mole of the compound contains 6.023×10²³ molecules, 2 moles of the compound contains how many molecules?
amount of molecules= (6.023×10²³ atoms× 2 moles)÷ 1 mole
amount of molecules= 1.2046×10²⁴
Finally, 2 moles of Fe(NO₃)₂ contains 1.2046×10²⁴ molecules.
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What produces all of the light in the universe?
Answer:
Source of Light in UniverseAlthough the Sun doesn't light up the other stars, it does provide the daylight here on Earth; and the moon and planets we see are illuminated by that same sunlight. All stars produce light (and other kinds of energy) through nuclear reactions, using the energy stored in the tiny nucleus at the center of atoms.Explanation:
THANKS❤❤What macromolecules would you find in Blazin' wings and celery?
the connection between limiting factors and invasive species
Answer:
Biology, Ecology, Earth Science, Climatology, Geography
Explanation:
A limiting factor is anything that constrains a population's size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources. Others are abiotic, like space, temperature, altitude, and amount of sunlight available in an environment. Limiting factors are usually expressed as a lack of a particular resource. For example, if there are not enough prey animals in a forest to feed a large population of predators, then food becomes a limiting factor. Likewise, if there is not enough space in a pond for a large number of fish, then space becomes a limiting factor. There can be many different limiting factors at work in a single habitat, and the same limiting factors can affect the populations of both plant and animal species. Ultimately, limiting factors determine a habitat's carrying capacity, which is the maximum size of the population it can support
How are single double and triple bonds similar
Answer:
Double and triple covalent bonds are stronger than single covalent bonds and they are characterized by the sharing of four or six electrons between atoms, respectively.
Explanation:
A wave hits an object as shown.
Which kind of wave interaction is shown?
absorption
diffraction
refraction
reflection
Answer:
Absorption is the answer
Answer:
refraction
Explanation:
What is NOT TRUE about the cell membrane
Phospholipid bilayer
It controls what enters and leaves the cell
Semipermeable
Contains digestive enzymes
how does the cell work
7.Glycolysis is the process of _______.
A. adding 4 ATP molecules to produce pyruvate C. glucose molecule oxidation to form FADH and NADPH
B. breaking the glucose into 2,3 carbon molecule D. breaking the glucose molecule to produce acetyl CoA
9. The enzymatic redox reaction process in Krebs Cycle produces what molecule?
A. Cytochrome oxidase C. Oxaloacetate
B. Succinate Acetate D. Oxaloxide
10. During electron transport chain, energy from the electrons of NADH and FADH2 is used in the process
chemiosmosis to __________.
A. reduce NADH to NAD+ C. phosphorylate ADP to ATP
B. reduce FADH2 to FAD D. pump hydrogen ions across the membrane
Answer:
7. D. breaking the glucose molecule to produce acetyl CoA
8. C. Oxaloacetate
10. phosphorylate ADP to ATP
Explanation:
Cellular respiration is the metabolic process by which energy in form of ATP is obtained in a cell. However, it occurs in three major stages namely: glycolysis, Krebs cycle and electron transport chain (oxidative phosphorylation).
- Glycolysis is the process where glucose is broken down to produce pyruvate, which is then processed into acetyl coA before it enters the next stage (Krebs cycle).
- Krebs cycle is the stage where series of REDOX reactions occur to produce OXALOACETIC ACID as a final product, which accepts acetyl coA for another cycle to begin.
- Electron transport chain (ETC) uses the energy derived from the electron carriers energy NADH and FADH2 to phosphorylate ADP to ATP in a process called CHEMIOSMOSIS.
1. ATP-ADP cycle talks about energy and has two types; potential energy and kinetic energy. The energy in motion is?
A. Both potential and kinetic energy C. Kinetic energy only
B. Potential Energy only D. none of the choices
2. This is the capacity to do work.
A. Potential Energy C. Chemical Energy
B. Energy D. all of the above
3. What is the product of photosynthesis?
A. Glucose C. Glucose and carbon dioxide
B. Oxygen D. Glucose and oxygen
4. Mitochondria : cellular respiration : : chloroplast : ___________
A. Calvin cycle C. Krebs cycle
B. Chemiosmosis D. photosynthesis
5. From where are heterotrophs directly obtain its energy?
A. the sun C. eating other organisms
B. the sun and eating other organisms D. simple chemicals in the environment
6. NADH & FADH : cellular respiration : : NADPH : ___________
A. phosphorylation C. glycolysis
B. redox reaction D. photosynthesis
7. Light-dependent reaction : energy formation : : Calvin cyle : __________
A. stroma C. ATP synthesis
B. Krebs cycle D. glucose synthesis
8. In the light dependent reaction, what is the first role of the captured energy from photon?
A. to split a water molecule C. to synthesize glucose
B. to energize the electrons D. to produce ATP
9. Plants produce oxygen as a by-product when they photosynthesize. Where is the oxygen come from?
A. from the electron transport chain C. during ATP synthesis
B. by splitting water molecules D. by the chlorophyll
10. Where in the plant cell Calvin cycle take place?
A. thylakoid membrane C. granum
B. thylakoid space D. stroma
11. Which statement correctly describe carbon fixation?
A. the production of carbohydrate molecules from G3P C. the formation of RuBP from G3P molecules
B. the conversion of CO2 to an organic compound D. the use of RUBISCO to form 3-PGA
PHET Energy Skate Park Simulation .Consider this equation: gravitational potential energy = mgh. Which of those variables is changing as the skater moves up and down the track?
Answer:
h - height
Explanation:
gravitational potential energy = m * g * h
m stands for mass. Mass doesn't change in physics
g stands for gravitational acceleration. It is a constant.
h stands for height. When the skater moves up and down the track the height from the ground changes. Therefore this variable does change.
In the equation gravitational potential energy = mgh, the variable that is changing as the skater moves up and down the track is the variable h, which represents the height or vertical position of the skater.
As the skater moves up the track, the height increases, resulting in a higher value for h. Conversely, as the skater moves down the track, the height decreases, leading to a lower value for h.
The other variables in the equation, m (mass) and g (acceleration due to gravity), typically remain constant unless specified otherwise. Therefore, the changing variable in this equation as the skater moves up and down the track is the height (h).
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Which of the following options best depicts the process of protein synthesis?
1. protein → RNA → DNA
2. DNA → amino acid → RNA → protein
3. DNA → RNA → protein
4. RNA → DNA → RNA → protein
URGENT!!!
A key principle of ethics is acting the same whether or not you are being observed.
True
False
(its agriculture)
Answer:
If simple subjectivism is true, when one person says X is right and another person says X is wrong, they are having a moral disagreement. False.
I need help with this. PLEASE HELP IF YOU CAN!!!
The diagram below shows part of the rock cycle.
Which type of rock does A represent?
Group of answer choices
Metamorphic rock
Rock formed by cooling
Rock formed by compaction
Sedimentary rock
PLEASE HELPPPPP
Answer:
The answer is option B - Rock formed by cooling (Igneous rock)
Explanation:
Volcanic rock (also called extrusive rock) is one type of magmatic rock (igneous rocks) and is the condensated product of extrusive magma after diagenesis and compaction, which differ greatly from sedimentary rocks in forming conditions, environments, and distribution.
why do all the planets in the solar system orbit the sun in the same direction ?
Answer:
The result of the initial rotation of the cloud of gas and dust that condensed to form the Sun and planets. As gravity condensed the clouds, of angular momentum increased the rotational speed and flattened the cloud out into a disk.
The energy produced by respiration is the in the form of adenosine triphosphate or ____________
Answer:
ATP
Explanation:
Adenosine triphosphate