Answer:
A specimen has to be thin so that the light coming from the light source is able to pass through the specimen Specimens are sometimes stained with dyes so that they are easier to distinguish and find.
Explanation:
Sorry it took some time but i hope it helps!!
I need some help! What cell structure goes to what? The structures as well as the descriptions are below
Match each cell structure below with its major functions.
lysosome
vesicle
nucleus
Golgi apparatus
chloroplast
smooth endoplasmic reticulum
nucleolus
rough endoplasmic reticulum
ribosome
mitochondrion
1.
contains chlorophyll, site of photosynthesis
2.
contains chromosomes, directs cell’s activities
3.
contains hydrolytic enzymes
4.
membranous network that detoxifies and helps synthesize lipids
5.
membranous network that helps synthesize proteins
6.
modifies and stores the products of the ER
7.
site of cellular respiration and ATP production
8.
site of protein synthesis
9.
site of ribosomal RNA synthesis
10.
small membrane-bound sac within a cell
Answer:Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Which of these changes to the cell would cause the greatest reduction in the activity of the catalase?
CHOICES:
#1 a return of pH to the normal range
#2 A decrease in the concentration of hydrogen and oxygen
#3 an increase in the concentration of hydrogen peroxide
#4 an increase or decrease in PH beyond normal range
Answer:
#3 an increase in the concentration of hydrogen peroxide.
Explanation:
The changes to the cell that causes the greatest reduction in the activity of the catalase would be - #3 an increase in the concentration of hydrogen peroxide.
Catalase enzyme is present in both plant and animal cells. The catalase is mainly found in aerobic organisms. The substrate for the enzyme is hydrogen peroxide which is broken down into oxygen and water.
The hydrogen peroxide is harmful to the cell and very reactive. Its buildup can kill the cellto breakdown the hydrogen peroxide, the catalase enzyme catalyzes it and convert it into water and oxygenincrease of the hydrogen peroxide leads to a reduction in the activity of the catalase.A single molecule of the catalase can break down 40 million molecules of hydrogen peroxide per minute.Thus, the correct answer is - #3 an increase in the concentration of hydrogen peroxide.
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What relationship does Organism Y have with the other organisms in figure 1?
1. It is the herbivore that feeds on autotrophs.
2. It is the producer that provides the food base.
3. It recycles nutrients by breaking down organic matter.
which printer
uses light to create
Impressions on paper
Answer:
An LED printer is a type of computer printer similar to a laser printer. Such a printer uses a light-emitting diode (LED) array as a light source in the printhead instead of the laser used in laser printers and, more generally, in the xerography process....
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How are lysosomes and vacuoles the same? How are they different?
Answer:
Vacuole is a cell organelle which contains mainly water while lysosomes also cell organelle and are regarded as bags by function. Vacuoles stores the undigested nutrients while the Lysosomes are the membrane bound sacs containing digestive enzymes that breaks down large molecules.
Answer:
Vacuole is a cell organelle which contains mainly water while lysosomes also cell organelle and are regarded as bags by function. Vacuoles stores the undigested nutrients while the Lysosomes are the membrane bound sacs containing digestive enzymes that breaks down large molecules.
Explanation:
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Describe the type and ratio of organisms you would expect to find in a lake in a national park. give evidence to support your answer
Answer:
Algae would be the organism in greatest proportion in a lake in a national park.
Explanation:
A lake in a national park would have algae proliferation, which would be the largest organism in that lake. This is because a lake in a national park is subjected to great incidence of sunlight and large amounts of oxygen. This would facilitate and stimulate the reproduction of algae on a large scale, causing them to develop in the substrate, stones, pebbles, and in the water itself.
PLEASE HELP I NEED THIS ASAP!!!!!!!!!!!!!!!A leaf's cuticle A. is the main site of photosynthesis B. is spongy with many holes C. stores extra food D. prevents excessive evaporation
Answer:
te correct answer is D it prevents excessive evaporation
Explanation:
An organism that has the ability to maintain an internal temperature suitable for life.
ectotherm
endotherm
heterotrophs
species
Answer:
The correct answer is - endotherm.
Explanation:
Homeostasis is the process that is responsible for maintaining the internal body environment including the temperature of an individual in order to survive.
Endothermic organisms are the organism that maintains their body temperature and independent of environmental change where is ectothermic are dependent on the external environment to regulate their body temperature.
Thus, the correct answer is - endotherm.
Answer: Endotherm
Explanation:
7. When did whale ancestors begin living full time in the water?
name the blood vessels that convey blood to the brain
Answer:
Blood is supplied to the brain, face, and scalp via two major sets of vessels: the right and left common carotid arteries and the right and left vertebral arteries. The common carotid arteries have two divisions. The external carotid arteries supply the face and scalp with blood.
Explanation:
Which three items should you be able to find in or near the sink when your lab is finished ? a. Used lab equipment, specimens, paper towels b. Chemical waste, used gloves in the sink, used paper towels c. Soap, paper towels, scalpel blades used in your lab d. Soap, paper towels, sharps container
Answer:
I would say the answer is C.
Explanation:
which plant cell structures provide evidence that plants are living organisms?
Answer:
chloroplasts
Explanation:
Answer:
Chloroplasts or Nucleus
Explanation:
The Nucleus holds DNA, which is in every living thing. However, nucleus' are also in animal cell. Specifically in a plant cell, the chloroplasts provide the evidence since they help the plant make it's own food.
What exercise is most appropriate for testing muscular endurance?
A. Push-up
B. Bench press
C. Back squat
D. Bicep curl
Answer:
Push ups
Explanation:
Muscular endurance is when the muscle have the ability to withstand and sustain contractions that is constantly occur for a long period of time. It include the amount of repeated single exercise that the muscle can endure without resting. It ensures muscular fitness, muscular strength and power.
A good example of muscular exercise is push up the ability to constantly do it for a long time without rest or stopping.
The push-up is the most appropriate exercise for testing muscular endurance. Therefore, the correct option is A.
Muscular endurance is the ability of a muscle or group of muscles to sustain repeated contractions over a prolonged period of time.
The push-up specifically targets the chest, shoulders, triceps, and core muscles. It requires maintaining a plank position and lowering and raising the body by bending and extending the elbows.
By performing as many push-ups as possible without compromising form, an individual can assess their muscular endurance level.
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The sequence of amino acids in a protein can be though of as its _______ structure.
Answer:
molecular
Explanation:
Why is it important for scientists who study ecosystems to study more than the organisms that live there?
Enzymes are proteins that act as catalysts. The shape of enzymes can be altered by changes
in pH or temperature. Explain how this change of shape affects the function of the enzyme.
Answer:
Explanation:
Enzymes are proteins that act as catalysts. The shape of enzymes can be altered by changes
in pH or temperature. Explain how this change of shape affects the function of the enzyme.
Describe the characteristic of the endoplasmic reticulum
Answer:
The general structure of the endoplasmic reticulum is a network of membranes called cisterns, these bag-like structures are stretched together by the cytoskeleton. The phospholipid membrane surrounds the cystic space (or lumen), which is an extension of the nuclear space but is separated from the cytosol
Which process connects glycolysis and the citric acid cycle?
A. lactic acid formation
B. acetyl CoA formation
C.electron transport
D. Krebs cycle
Answer: the answer is B
Explanation: i lied lolololloloolollololol
Which of the following is a polysaccharide often responsible for providing structure to plants?
A. Amylose
B. Cellulose
C. Glucose
Answer:
Explanation:
The anwer is B
how are lipids like carbohydrates
Carbohydrates and lipids are both types of macromolecules found in living things. Carbohydrates are often referred to as sugars and are found in different forms such as glucose and maltose. Lipids are fats, oils, waxes and steroids and are made up of fatty acids.
difference between diffusion and osmosis
Answer: In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
Explanation:
amino acid is to protein as
Answer:
Nucleotides are to Nucleic acids
Explanation:
This is a part to whole analogy, one makes the other.
essential amino acids cannot be produced by the body,so they must come from our diet.we can get them from eating's foods that contain which biomolecule
Answer:
Essential amino acids cannot be made by the body. As a result, they must come from food.
The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Explanation:
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what is it called when an environmental factor changes the shape of an enzyme so that it no longer works to catalyze a reaction? a) killing the enzyme b) lowering the activation energy c) induced fit d) denaturing the enzyme
Answer:
c) infused fit
is correct option ...
Answer:
[tex]\boxed {\tt D. \ Denaturing \ the \ enzyme }[/tex]
Explanation:
Enzymes are special proteins that speed up chemical reactions. They have specific shapes that correlate to their functions. They also have optimal temperature and pH ranges. They should be in the range for the best results.
If an enzyme is placed in an extreme temperature or pH, the enzyme will become denatured. The enzyme will fold in a different way and its unique shape will be altered. As a result, the enzyme will slow down or stop working.
Therefore, the correct answer is D. denaturing the enzyme.
BLANK are fatty acid derivatives that function in inflammatory and allergic reactions, blood clotting, and smooth muscle contractions.
The answer is lipids
Martha has been having difficulty swallowing, although she does not have a cold or sore throat. She also has chronic constipation. Her doctor explained that she would be using a nonsurgical procedure to examine Martha’s digestive tract. What diagnostic procedure is the doctor likely to use to assess Martha’s condition? A. endoscopy B. X-ray C. hemoccult test D. blood test
Answer:
Blood test
Explanation:
From those two symptoms blood test would be the best in my opinion .
Answer:
D,blood test is correct
A protein has 100 peptide bonds. How many amino acids does it have? Name the four elements found in amino acid.
Answer:
twenty amino acids
Explanation:
and
carbon
nitrogen
oxygen
hydrogen, for the second question
Which set of features below best describes the radiolaria?
a. phytoplankton; silica 'hard parts'
b. zooplankton; silica 'hard parts'
c. zooplankton; calcite 'hard parts'
d. phytoplankton; cellulose 'hard parts'
Answer:
The correct option is b
Explanation:
Radiolaria (or radiozoa) are protozoa that produce mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.
The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.
From the above explanation, we can deduce that the correct option is b
Answer:
The correct option is b
Explanation:
Radiolaria (or radiozoa) are protozoa that produce a mineral skeleton often made up of silica. They exist as zooplankton in ocean bodies. Zooplanktons are heterotropic planktons that live in open water bodies; they feed on bacteria and algae and are fed on by fish and insects.
The skeletal remains of Radiolaria make up a large part of the ocean floor and are referred to as siliceous ooze.
From the above explanation, we can deduce that the correct option is b
Which is an example of mechanical weathering?
a. Feldspar reacts with the hydrogen in water to form clay, which crumbles easily.
b. A large rock falls from a cliff and breaks as it hits other rocks.
c. Oxygen reacts with iron, creating rust
d. Limestone dissolved by acid rain to create limestone caves
b. A large rock falls from a cliff and breaks as it hits other rocks
In Oxygen molecule O2, stability is gained through sharing of
Answer:
Trees and plants.
Explanation:
Trees give us oxygen and plants get rid of carbon dioxide and remake it as oxygen.
In the Oxygen molecule O2, stability is gained through sharing of two pairs of electrons with a single neighboring atom.
What is the sharing of electrons?The sharing of electrons gives rise to the formation of covalent bonds between two atoms. Atoms will be covalently bonded in order to gain more stability. During the process of sharing electrons, they are simultaneously attracted by the two atomic nuclei.
The stability of oxygen molecules is gained through the help of non-polar covalent bonds. This means that there is no difference in electronegativity of bonded atoms.
The valence shell of oxygen has six electrons, so they need two more electrons in order to fulfill its octet and maintain stability. The sharing and paring of electrons between two or more atoms construct a bond known as covalent bonds.
Therefore, in the Oxygen molecule O2, stability is gained through sharing of two pairs of electrons with a single neighboring atom.
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