Answer:
In the field of biology, classification plays a major role. With new species being discovered every day, it’s important to have techniques in place to identify and classify them. One such tool is the dichotomous key. It helps identify organisms by directing the user to look at the known organisms.
Explanation:
In a food web, the arrows point from one organism to the organism it eats. True or false
Answer:
False
Explanation:
In a food wed the arrows point to the animal that will eat the organism it's pointing away from
One explanation for why polar regions are colder than equatorial regions is that
Answer:
Sunlight strikes at an different angle
Explanation:
a salmon moves from a salwater ocean to a freshwater river what takes place in the salmon cells as it moves
Answer:
The cells fill with water because of the movement of water by osmosis.
Explanation:
Answer:
the cells fill with water because of the movement of water by osmosis
Explanation:
Which of these are alive?
A).potato.
B).potato chips.
C)gym socks.
Answer:
A) potato
Explanation:
where can the fewest h+ ions be found on the pH scale, and the fewest OH- ions
The lowest [tex]H^+[/tex] concentration on the pH scale would be 14 while that of the [tex]OH^-[/tex] concentration would be 0.
pH ScaleThe pH scale ranges from 0 to 14 with 0 being the most acidic and 14 being the most basic or alkaline.
The more the [tex]H^+[/tex] concentration of a substance, the lower the pH, and the more the [tex]OH^-[/tex] concentration, the higher the pH.
Thus, at the lower extreme of the pH scale, the concentration of [tex]OH^-[/tex] is fewest, and at the higher extreme, the concentration of [tex]H^+[/tex] is fewest.
More on the pH scale can be found here: https://brainly.com/question/1433865
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Which molecule is the most common/plentiful molecule in our cells?
Answer:
water
Explanation:
Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules.
What organ in the circulatory system is made up of cardiac tissue?
O The stomach
O The lungs
O The skin
O The heart
Answer:
the heart
Explanation:
Cardiac muscle tissue is only found in your heart, where it performs coordinated contractions that allow your heart to pump blood through your circulatory system.
what conditions are important for plants to be able to grow
Answer:
sunlight, soil, water
Explanation:
Use the drop-down menus to identify the scientists who match the descriptions below.
found that animals are composed of cells
found that plants are composed of cells
looked at cork through a compound microscope
declared that all living cells can only come from other living cells
called living cells “animalcules
Answer:
the answers are;
1. Theodor Schwann
found that animals are composed of cells
2. Matthias Schleiden
found that plants are composed of cells
3. Robert Hooke
looked at cork through a compound microscope
4. Rudolph Virchow
declared that all living cells can only come from other living cells
5. Anton van Leeuwenhoek
called living cells “animalcules”
hope this helps! plz put me as the brainiest!
Look at the images of different rocks.
Which two rocks have a fine-grained texture?
1 and 5
2 and 3
3 and 5
4 and 1
Answer:
1 and 5
Explanation:
Image 1 and 5 actually show fine-grained textures of rocks.
Fine-grained textures actually indicates that magmas that are formed at or near the earth's surface cool rapidly. It's known that when magmas cool fast, they prevent very large crystals from growing. When hand samples of fine-grained rocks are taken, they appear homogeneous throughout the rock.
Answer:
1 and 5
Explanation:
5
Energy for active transport comes from a cells'
(3 Points)
O Golgi Apparatus
Mitochondria
Nucleus
Lysosomes
Answer:
Nucleus :)Explanation:
Active transport occurs in cells, for example, when the Na-K pump is at work. Any process that involves active transport most often involves the
Select one:
a. movement of molecules without any predictable pattern.
b. movement of molecules from a lower concentration to a higher concentration.
c. movement of molecules from a higher concentration to a lower concentration.
d. movement of molecules from a lower to higher concentration and then back to the point of origin.
Which of the following is a carbohydrate serving as a structural component in the cell walls of Plants?
O Fructose
O Phospholipids
O Cholesterol
O Cellulose
Answer:
Cellulose, because,
Fructose is the monosaccharide so it cant give plant structural support
Phospholipids are not carbohydrates they are Lipids
Cholestrol is a type of steroid so it is not carbohydrate
Give three reasons why the villi in the small
intestine are perfect for absorbing food.
Answer:
Villi are specialized for absorption in the small intestine as they have a thin wall,
one cell thick, which enables a shorter diffusion path.
They have a large surface area so there will be more efficient absorption of fatty acids and glycerol into the blood stream.
The energy for cellular respiration comes from the glucose that was made during photosynthesis
Answer:
True
Explanation:
Glucose and oxygen that are made with the process called photosynthesis are then used as starting products for cellular respiration. This cellular respiration later makes carbon dioxide and water are then in combination with sunlight the starting products for new photosynthesis.
The sodium-potassium pump regulates the amount of sodium and potassium inside of cells, particularly nerve and muscle cells. In this process, an ATP is burned, causing three sodium ions to be pumped out and exchanged for two potassium ions, which are pumped in by a membrane protein. Both ions go against their concentration gradients.
The sodium-potassium pump is an example of
a. phagocytosis.
b. passive transport.
c. active transport.
d. facilitated diffusion.
Answer:
Active Transport because it needs ATP
The biomolecule described below is a _______________.
a. lipid
b. monosaccharide
c. carbohydrate
d. protein
Answer: it’s lipid
Explanation:
The biomolecule described below is a lipid because they are large and non-polluting molecules.
What is the main function of lipids?Lipids are responsible for providing energy, being in the form of fat that our body stores the excess energy we consume through food to use in times of need.
They are substances whose main characteristic is the insolubility in polar solvents and the solubility in organic solvents (nonpolar), presenting a hydrophobic nature, that is, aversion to the water molecule.
Lipids have unique characteristics that allow them to be quickly identified, for example because they are large and non-polluting molecules.
See more about Lipids at brainly.com/question/3498396
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I am trying to dissolve popcorn butter and milk into water. I notice the milk
dissolves, but the popcorn butter does not. Why is this? *
Answer:
Because butter is an oil-like substance. Water is a combination of hydrogen and oxygen, oil on the other hand is not. For the two to mix the oil would have to break the hydrogen chain but that is not possible because then the water won't be water.
So most fats repel water, just think about it being hydrophobic :)
Hope that helps and have a great day!
Atoms of the same element that have different numbers of neutrons are called ____.
A) isotopes
B) compounds
C) neutrino elements
D) molecules
Someone can please describe to me the process a cell is living if the cell membrane is damaged
Answer:
When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.
Explanation:
amino acids are linked together to make proteins by removing a molecule of in a process called
Which of the following is NOT a function of the catalyst?
Answer:
the correct Question is B-
Explanation:
A catalyst increases the rate of a chemical reaction by decreasing activation energy. So I used the power of marking out the ones i knew were incorrect. Hope this helps.
Anyone like crossword puzzles?!
The process of transferring energy during respiration occurs in a series of steps. This prevents too much heat from being released at one time. Maintaining an appropriate temperature is beneficial to an organism because A) enzymes need a proper range of temperatures to catalyze vital reactions B) cellular waste products can only be excreted in cooler temperatures C) hormones can only produce antibodies if temperatures are not excessive D) nutrients diffuse faster into cells when temperatures are lower
Answer:
A) enzymes need a proper range of temperatures to catalyze vital reactions
Explanation:
Cellular respiration is the process by which living cells synthesize ATP (energy). The synthesized energy is transferred for use in other activities. However, as stated in this question, the process of transferring energy during respiration occurs in a series of steps in order to prevent too much heat from being released at once.
The process whereby the living organism maintains an appropriate internal temperature is called HOMEOSTASIS, which is beneficial and key to an organism's survival because because enzymes need a proper range of temperatures to catalyze vital reactions. Enzymes are proteinous catalysts that gets denatured by certain factors such as high temperature, pH.
What type of infrared waves heat the Earth
*EXTRA POINTS*
If the volume of a gas decreases, what happens to the pressure?
If the volume of a gas increases, what happens to the pressure?
Answer:
Boyle's law. If the gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases, both of which increase the pressure exerted by the gas (Figure 1).
Explanation:
This diagram shows DNA fingerprints for a child and four adults.
Which adult is most likely a parent of the child?
Answer:
probably parent 4 but I could be wrong bc look at the bottom of the scans the match kind of.
Explanation:
Answer: Adult 4
Explanation: There patterns match they are similar. :)
Recently in Antarctica, a penguin with all black feathers was
discovered. This trait had never been seen before. What is
the likely source for this "new" trait?
The penguin in question has a rare genetic mutation called melanism, which makes skin, fur, and feathers black due to a high concentration of the pigment melanin. It's basically the opposite of albinism, which is caused by a lack of pigment.
What came first: chicken or egg?
Answer:
egg
Explanation:
Which of the following best describes an atom?
Protons, neutrons, and electrons all grouped together in the center.
A core of negatively and positively charged particles surrounded by neutral particles
A core of positive and neutral particles surrounded by negative particles.
A core of electrons and neutrons surrounded by protons
Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
Explanation:
hope this helps