A liquid has a ph of 12. It is... A. an acid B. a base C. neutral
Answer:
the answer is B) base
Explanation:
SOMEBODY PLEASE TELL ME THE ANSWER TO THIS QUESTION HURRY I ONLY HAVE 41 MINITES LEFT TO TAKE THID TEST!!!!!
Answer:
What's the question?
Explanation:
True or False? a human has 23 chromosomes
Answer:
False
Explanation:
A cell normally contains 23 pairs of chromosomes.
List where all of the ATP molecules come from and how you add up to the total
Answer:
Explanation:
ATP molecules are used by all living organism as energy to carry out life functions. Also notable, ATP stands for Adenosine Triphosphate. This molecule is composed of three parts:
Adenine
Ribose
Three Phosphate Groups
What happens on a cladogram as you move farther away from the base (and closer to the tips)?
A)The species before more and more similar.
B)The species share no common traits.
C)The species share fewer common traits.
D)The species all become extinct.
define the term cell division
Answer:
please mark as brainliest
Explanation:
Cell division is the process by which a parent cell divides into two or more daughter cells.
What are the harmful effects of pteridophytes?
These species can spread rapidly with negative consequences for native species. Invasive plant species have an impact on the diversity of local species, they affect water availability and damage the quality of soil nutrients. Once an alien plant has invaded a habitat, it changes the conditions of that environment.
DONT ANSWER WITH THE SAMPLE RESPONSE ik I missplet that)
According to the author, what is the main reason for the decrease in trillium in the forest? What evidence does she give to support her claim?
Answer:
The main reason for the decrease in trillium is the large number of deer in the forest that are eating the trillium. The author cites a research study performed by scientists as evidence to support her claim. In this study, researchers planted two fields, each containing garlic mustard and trillium. One was left open to deer, and the other was fenced off. Scientists kept track of the fields for several years. They found that trillium was able to regain much of its original space in the protected field. In the unprotected field, there was still more garlic mustard because the deer ate the trillium. The author also states that similar research studies have been conducted in many forests across the United States, and they all reveal similar results.
Explanation:
_____ increases the frequency of adaptive mutations in a population over time a. Fitness b. Natural selection c. Artificial selection d. Adaptive radiation
Answer:
B
Explanation:
Natural selection increases the frequency of adaptive mutations in a population over time.
A "healthy ecosystem" can also be described as:
Answer:
water and rocks; energy source, break down dead plants and animals, returning vital nutrients to the soil.
Explanation:
what is Electron Transport?
Answer:The electron transport chain is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane. The electron transport chain is built up of peptides, enzymes, and other molecules
Explanation:give brianlest
Answer:
Medical definitions for electron transport
The successive passage of electrons from one cytochrome or flavoprotein to another by a series of oxidation-reduction reactions during the aerobic production of ATP, with the electrons originating from an oxidizable substrate and passing to molecular oxygen.
What is the most common type of organic molecule?
protein
lipid
carbohydrate
carbon
Answer:
I am not certain but I think carbohydrate
Answer:
carbohydrate
Explanation:
carbohydrate is the most common type of organic molecule
What is the atomie number of Fluorine
Answer:
Atomic number of Fluroine is 9 :)
Explanation:
Answer:
9
Explanation:
The atomic number of Fluorine is 9 because its the 9th element on the periodic table
What are the disadvantages of pteridophytes?
Answer:
Ferns don't reproduce with seeds so they don't spread as much as plants that produce seeds.
Explanation:
Select all that apply... A. Are very willing to give up a proton B. are very willing to accept a proton C. Want to become more positively charged D. Do not accept or give up protons
Answer:
c and a
Explanation: i used a text book
How might global climate change effect iguana populations?
Answer:
Since iguanas are cold blooded animals and can not regulate their own body temperatures, once temperatures reach 40° they become immobilized and they cant move, so if it is cold they will die.
The cell membrane (plasma membrane) is describe as a highly selective
barrier composed of alipid bi-layer. This structure plays an important role
in moving molecules across the cell membrane in order for the cell to
maintain homeostasis. If the cell is unable to take in the materials it needs
or remove vwhat it does not need, the cell may die. This inability of cells to
maintain homeostasis may cause sickness or even death of an organism.
Why is it important that the cell membrane is highly selective?
O So that the cell wall is stabilized and maintains its rigidity.
O To prevent certain ions and molecules from entering or exiting the celI.
O So that proteins and lipids can attach to the membrane where needed.
O To allow movement of materials in and out of the cel.
Answer:
O To prevent certain ions and molecules from entering or exiting the celI.
Explanation:
The cell needs to keep a constant chemical composition on the inside in order to mantain homeostasis
What does the limnetic, profundal, littoral, and benthic zones have in comman?
Answer:
B - (Edge 2021)
Explanation:
They are all zones found in freshwater systems.
XX=Female XY=Male.
your best friend has five children and they are all boys. They are expecting their 6th child. What would be the probability for their 6th child to be a girl? Why
Answer:
50% or 1/2
Explanation:
The probability of their 6th child being a girl would be 50% or 1/2.
During meiosis, the female produces X eggs while the male produces X and Y sperms. A random fusion of gametes then occurs during fertilization.
XX x XY
XX (female) XY (male) XX (female) XY (male)
XX - 1/2 or 50%
XY - 1/2 or 50%
Hence, the probability of producing a girl is 1/2 or 50% irrespective of the number of kids a couple might have produced already.
how are pure carbon, oxygen, hydrogen different from thecompoundethanol which contains all three of those elements
Carbon, oxygen, & hydrogen may all be elements found in ethanol, but when separated, they have completely different chemical compounds. They are pure elements where as ethanol is a mixture.
RIGHT ANSWER GETS BRAINLYEST!
The state of California experiences periodic occurrences of higher than average precipitation. This causes flooding due to heavy rainfall. Which weather phenomenon most likely causes this and why?
La Niña, because of weakening of trade winds
El Niño, because of weakening of trade winds
El Niño, because of strengthening of trade winds
La Niña, because of strengthening of trade winds
Which of these can be impacted due to climate?
Group of answer choices
Selection of crops
Seasonal crop yield
Aircraft visibility
Flight timing
What have we learned from fossil evidence about evolution?
Select one:
a. It is an abrupt change.
b. The process is observable.
c. It takes place during one lifetime only.
d. The most complex traits are always selected.
Answer:
B. The Process Is Observable
Explanation:
You can observe all fossils from a billion years ago to now and there will be a change you can see visually.
Which statement best explains why this occurred?
Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin—responsible for capturing green light, phycocyanin—responsible for capturing orange-red light, and allophycocyanin—responsible for capturing red light.
Since light can only penetrate to certain depths in oceans (figure 1), phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. (4 points)
A. Explain the relationship between chlorophyll absorption and wavelength.
B. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. Which of the following best justifies the claim that this species is better adapted to environmental changes than the cyanobacteria described above?
Answer:
Part A:
— Chlorophyll absorbs different wavelengths than chlorophyll does.
— Chlorophyll does not absorb wavelengths that are green and yellow, which is indicated by a very low degree of the light absorption.
Part B:
Photosynthetic Organisms are organisms capable of photosynthesis. Photosynthesis is greenery and other organisms using the energy from sunlight to synthesize foods from carbon dioxide and water. Leaving allophycocyanin to be the protein these plants and other organisms receive from the light. So for the process, in order for the plants to live they must be able to go through photosynthesis giving the plants the energy and proteins they need to produce food and to release oxygen into the environment.
Answer:
The visible spectrum is the only part of the electromagnetic spectrum that can be seen by the human eye. It includes electromagnetic radiation whose wavelength is between about 400 nm and 700 nm.
Visible light from the sun appears white, but it’s actually made up of multiple wavelengths (colors) of light. You can see these different colors when white light passes through a prism: because the different wavelengths of light are bent at different angles as they pass through the prism, they spread out and form what we see as a rainbow. Red light has the longest wavelength and the least energy, while violet light has the shortest wavelength and the most energy.
Photosynthesis, the sun’s energy is converted to chemical energy by photosynthetic organisms. However, the various wavelengths in sunlight are not all used equally in photosynthesis. Instead, photosynthetic organisms contain light-absorbing molecules called pigments that absorb only specific wavelengths of visible light, while reflecting others.
The set of wavelengths absorbed by a pigment is its absorption spectrum. The set of wavelengths that a pigment doesn't absorb are reflected, and the reflected light is what we see as color. For instance, plants appear green to us because they contain many chlorophyll a and b molecules, which reflect green light.
Although both chlorophyll a and chlorophyll b absorb light, chlorophyll a plays a unique and crucial role in converting light energy to chemical energy (as you can explore in the light-dependent reactions article).
All photosynthetic plants, algae, and cyanobacteria contain chlorophyll a, whereas only plants and green algae contain chlorophyll b, along with a few types of cyanobacteria Because of the central role of chlorophyll a in photosynthesis, all pigments used in addition to chlorophyll a are known as accessory pigments—including other chlorophylls, as well as other classes of pigments like the carotenoids. The use of accessory pigments allows a broader range of wavelengths to be absorbed, and thus, more energy to be captured from sunlight.
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What is the term for an atom that decays?
A. Precambrian
B. Radioactive
C. Mesozoic
D. Sediment
Answer:
radioactive
Explanation:
its in physics term
The measure of the average kinetic energy of the atoms of a substance is the
substances energy cycle. *
True
Or
False
Plz help. For my grades
Answer:
Ig it's the point B which shows decrease in the population of predators or individuals.
Give the mRNA and amino acid sequence of the DNA code below.
DNA Code: TAC AAA ACC ATG ACT
mRNA Codon: ___ ___ ___ ___ ___
amino acid: ___ ___
___ ___ ___
The forces shown in the diagram caused the rock layers to
A Fault
B Folohy
С Form
D Expand
Which body system is responsible for motion in humans?
A
Immune
B
Integumentary
C
Muscular
D
Circulatory
.
Answer:
Muscular System.... off course