Answer:
A. False, not all organisms can make their own food, only plants and some bacteria.
Explanation:
It's right
The description of the statement whether it is true or false is described below:
All organisms make their own food, but plants are the only kind to do so using sunlight. (False).Not all organisms can make their own food, only plants, and some bacteria. (True). All organisms can use sunlight to make food. (False). Plants cannot make their own food. (False). How do plants prepare their own food?Plants prepare their own food with the process of photosynthesis which utilizes carbon dioxide and water and synthesizes glucose in the presence of sunlight.
Plants, some photosynthetic algae, and some bacteria prepare their own food with the help of sunlight. They have a photosystem that captures the energy of sunlight in the food production mechanism.
Therefore, it is well described above.
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Does skeletal connective tissue have nucleus?
Answer:
Fibroblasts are the most common cell type of connective tissue. They produce both fibers and amorphous ground substance. Typically only the oval nuclei are visible. ... In the tendon, fibroblasts are seen as elongate nuclei found sandwiched between collagen fibers .
Kể tên các biện pháp đấu tranh sinh học. Cho ví dụ. Biện pháp đấu tranh sinh học có những ưu điểm gì?
Answer:
means translate in English . if I can help I will.
How do mitochondria differ from chloroplast
Explanation:
Mitochondria and chloroplast are organelles found in a plant cell. However, chloroplast is absent in an animal but mitochondria is found in both.
Mitochondria generates energy for the cell in the form of ATP using oxygen and nutrients while Chloroplast is the site for photosynthesis in a plant cell.
Answer:
MitochondriaKnown as the powerhouse of the cell, it is responsible for energy metabolism and cellular respiration.chloroplastLarger and much more complex than a mitochondrion, it is the site where photosynthesis takes place.Hope this helps you ❤️MaRk me as brainliest ❤️^_^Why suspend the solution in warm water
An antibody molecule has a molecular weight of 150 kD when analyzed by SDS polyacrylamide-gel electrophoresis (SDS-PAGE). Treatment with mercaptoethanol, a reducing agent that breaks disulfide linkages, yields polypeptides with molecular weights of 50 kD and 25 kD, and both of these bands are similar in intensity and thickness. Based on this gel pattern as described, what can we conclude about the molecular composition of the antibody molecule
Answer:
The antibody has a molecular weight of 150 kD and consists of four subunits: two subunits of 50 kD and two subunits of 25 kD, which are bonded by covalent bonds.
Explanation:
Sodium dodecyl sulfate (SDS) is a detergent used to alter and denature proteins before gel electrophoresis. SDS can break hydrophobic interactions and hydrogen (H) bonds, but this detergent does not break down disulfide bonds, which is a type of covalent bond between two sulfur atoms. Moreover, mercaptoethanol is a reducing agent used to break disulfide bonds. In this case, it is expected that mercaptoethanol can break disulfide bonds between the four subunits of the mature antibody, thereby yielding two bands corresponding to the 50 kD and 25 kD bands (two subunits of 50 kD + two subunits of 25 kD = 150 kD).
This organ stores the main metal ion that forms part
of the red blood cell. Which ion is this, and what
molecule is it a part of inside the red blood cell?
Answer:
a. Iron (Fe) ion
b. Haemoglobin
Explanation:
Red blood cells (RBC), also known as erythrocytes, are one of the cells found in the blood. Red blood cells are the major components of the blood involved with the transport of oxygen throughout the body. Red blood cells are able to do this because they contain proteinous molecules called HAEMOGLOBIN.
Haemoglobin is a molecule that contains hemic iron groups. Haemoglobin is composed of an IRON ION at the core of its structure, which binds to oxygen atom. Hence, according to this question, haemoglobin is a proteinous molecule that contains iron-binding heme groups in the red blood cells.
Blood pH is sensed by cells known as chemoreceptors that send information about blood pH to the brain via cranial nerve 9 and 10. In order to correct changes in pH, the ventral respiratory group sends signals to the diaphragm to adjust its rate of contraction. These signals are sent via the phrenic nerve. What serves as the effector in this example
Answer:
The correct answer is - The diaphragm.
Explanation:
If there is a response to stimulation if a bodily tissue or organ becomes active and those of the autonomic system involves two neurons, not single neurons like motor pathways of the somatic nervous system.
In this case, the diaphragm is the organ that gets the signal in order to correct or adjust the rate of contraction in response to changes in pH level, Hence, the diaphragm is the organ that is the effector in this case.
DNA is very small, one complete turn of a DNA helix is about
O A. 12 nm
B. 3.4 nm
.cher
C. 1.7 nm
ok
D. 34 nm
your answer is option B.3.4
When core body temperature rises, blood vessels in the skin
get wider, allowing a larger volume of blood to flow near the skin surface. This is called:
A. Negative feedback
B. Vasodilation
C. Shivering
D. Vasoconstriction
Answer:
B.Vasodilation
Explanation:
as vasodilation is the widening of blood vessels
Answer:
b
Explanation:
describe the process of digestion (20marks)
Answer:
The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.
Accessory organs: Liver: produces bile salts
Small intestine: Mixes chyme with digestive juice
Stomach: Mixes and churns food with gastric juice
Mouth: Ingests food; Chews and mixes food
Explanation:
1. A woman presents breast milk production without being pregnant and without having
given birth in accordance with the above it is most likely that in the body of this
woman there hypersecretion of
a. Insulin
B. Prolactin
C. Cortisol
D. Secretina
the answer is B! prolactin
Using the following nucleotide sequence, predict the complementary strand sequence:
5'-TTAAACCCGTTGGAAC-3'
5'-AATTTGGGCAACCTTG-3'
3'-AATTTGGGCAACCTTG-5'
03-CCGGGTTTACCAAGGT-5'
0 3'-TTAAACCCGTTGGAAC-5'
The predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
What is DNA?Deoxyribonucleic acid or DNA is a double helix molecule composed of two complementary strands.
According to the base pair rules, Adenine pairs with Thymine and Guanine pairs with Cytosine.
In conclusion, the predicted the complementary strand sequence for 5'-TTAAACCCGTTGGAAC-3' is 3'-AATTTGGGCAACCTTG-5'.
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Answer:
Your answer would be AATTTGGGCAACCTTG-5′
Explanation:
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
The answers are:
carrier proteins → charged amino acid
Carrier proteins are transmembrane proteins for the facilitated diffusion of charged amino acids across plasma membranes.
osmosis → water molecule
A type of passive transport, osmosis is the diffusion of water molecules in and out of cells.
active transport → calcium moves from low concentration to high concentration
This is the movement of substances across membranes against concentration gradient.
simple diffusion → oxygen
Oxygen molecules enter through membrane by simple diffusion from an area of high to low concentration.
exocytosis → proteins from the Golgi apparatus
This process of exocytosis is used by cells to release particles that has been packaged by the golgi bodies.
Explanation: Boom
Carrier Proteins is Charged Amino Acid, Osmosis implies to Water Molecule, Active Transport - Calcium moves from low concentration to high concentration, Simple Diffusion - Oxygen, and Exocytosis - Protein from the Golgi Apparatus.
In assisted diffusion, a type of transport in which charged amino acids or other molecules bind to particular carrier proteins in order to traverse the cell membrane, carrier proteins are involved.
The passage of charged amino acids through the membrane is aided by this mechanism.
Osmosis is the flow of water molecules over a membrane that is selectively permeable, caused by variations in solute concentrations.
The movement of substances against a gradient of concentration, usually from a region of lower concentration to one of greater concentration, is referred to as active transport.
In this instance, calcium ions are actively moved utilising ATP energy from low concentration to high concentration areas.
Simple diffusion is the gradient-driven passive migration of molecules from a region of higher concentration to a region of lower concentration.
Due to their small size and nonpolarity, oxygen molecules can freely diffuse through the cell membrane through simple diffusion.
Exocytosis is the process through which cells discharge big molecules, such proteins, to the exterior of the cell from the Golgi apparatus.
The proteins are contained in vesicles that join the cell membrane and discharge their contents outside of the body.
Thus, charged amino acid transport is facilitated by carrier proteins, water molecules are moved by osmosis, calcium is moved against its concentration gradient by active transport, oxygen is moved along its concentration gradient by simple diffusion, and proteins are released from the Golgi apparatus through exocytosis.
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Mateo and Tomás are identical twins. Mateo was raised by his father and mother, and Tomás was
accidentally placed with another family after a mix-up at the hospital. At the age of 15, the boys ran into
each other at a football game and noticed that they appeared to be mirror images of each other. After
genetic testing proved that they are twins, the families discussed some of the differences between the boys.
Mateo is very athletic and intelligent and excels in basketball, but he does not take school seriously and has
F's in all subjects. Tomás is also athletic and intelligent and excels in baseball, and he makes straight A's as
a result of his strict home life and study routine. Although they are identical twins, what do you think
accounts for the differences in the two boys' academic performance based on the research?
Answer:
boboboboobbb
Explanation:
step by step
What does Paramecium aurelia do?
Answer:
Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell.
At the time Hutton proposed his ideas about the age of rocks, how old was Earth believed to be by most people in Scotland?
Answer:
In the late eighteenth century, when Hutton was carefully examining the rocks, it was generally believed that Earth had come into creation only around six thousand years earlier (on October 22, 4004 B.C.
James Hutton was a Scottish naturalist and geologist who discovered the age of the earth. The earth was believed to be 6000 years old by the Scottish people.
Who was James Hutton?
James Hutton is the father of modern geology and was involved in the discovery of the earth's age and the soil formation from the parent rocks. He made his contribution to discovering the age of Earth based on his observation rather than on assumptions.
Before he discovered the earth age, it was believed by the Scottish people that the planet was six thousand years old. He discovered the process of soil formation by weathering the parent and bog rocks that accumulated as sediments over years and allowed the discovery of the planet's age.
Therefore, it is believed that the earth was 6000 years old.
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Grass (that is healthy) looks green because Group of answer choices it emits green light and absorbs other colors. it reflects green light and absorbs other colors. it absorbs green light and emits other colors. it transmits green light and emits other colors.
Answer:
it reflects green light and absorbs other colors.
Explanation:
The term pigment derives from the Latin pigmentum, which means the substance that produces color.
Pigments provide color to cells and tissues.
In vegetables, we can find different pigments, such as chlorophyll or carotenoids, among others. Plants use these pigments during the photosynthesis process to absorb sunlight and fixate carbon dioxide. Stem, flowers, and other tissue have pigments in their cells that define the organ´s colors.
Pigments are chemical molecules that produce color by the selective absorption of sunlight. Whenever white light meets a pigment, some wavelengths are absorbed by the pigments while others are reflected. The color expressed is the product of the reflection. The reflected spectrum is perceived as color and determined to be the pigment color or the color of an object or organism.
The color that tissue or vegetal organ express will depend on the pigment concentration or the combination of many of them.
The green color is ordinary in most vegetable species. Chlorophyll is responsible for this coloration, present in almost every vegetable species. This pigment absorbs blue and red wavelengths. But they reflect spectrums of green wavelengths, meaning that the expressed color is green in different tones.
Please help me to fill in the blanks. Thanks!
Sediments minerals rock remains sedimentary millions
When animals and plants die, their bodies fall into __________. Some of these decays while some become part of ______________ rocks. Rock layers build up and the rock becomes a solid. The ______________ in the rock replace the ________________ in parts of dead bodies. This takes place over _______________ of years. The_______________ of living organisms that have changed to ________________ are fossils.
When animals and plants die, their bodies fall into sediments. Some of these decays while some become part of fossilized rocks. Rock layers build up and the rock becomes a solid. The minerals in the rock replace the soft parts in parts of dead bodies. This takes place over millions of years. The remains of living organisms that have changed to stone are fossils.
What happens with the release of DDT into the food chain zooplankton -- small animal -- large animal-- bald eagle? And what process is involved
Answer: The process involved is called BIOACCUMULATION.
Explanation:
Dichlorodiphenyltrichloroethane (DDT) is a type of pesticide used in agricultural control of pests. It's use has been restricted because of its involvement in bioaccumulation. The pesticide is known for accumulating in food webs and persisting in soil and river sediments. This leads to it's accumulation (build up) in living organisms.
Pesticides and fertilizers are used in crop cultivation. Rain and irrigation water wash these chemicals, especially the soluble nitrate fertilizers, into the ground water and they eventually get into rivers, lakes and seas.
These pesticides such as DDT are synthetic organic compounds that are non-biodegradable. When they are washed into the ground water, they accumulate in the bodies of plants (zooplankton). These are eaten by small fishes which are in turn consumed by larger fishes. These large fishes are hunted as prey by the bald eagle.
DDT builds up in these bald eagle causing them to lay eggs with thin shells. As a result, the eggs break easily causing a fall in the eagle population.
what is the name of reproduction part in femal
Mary likes sour foods, and she decided to eat a slice of lemon. As she bit down on the lemon, she felt an uncomfortable squeezing-type sensation in her cheek as one of her salivary glands emptied its secretions into her mouth. Which of the three pairs of salivary glands did she feel
She felt the parotid.
I'm 99% sure this is right lol
The presence of Reed-Sternberg cells in an
individual indicates that the person has
O mononucleosis.
O Hodgkin's lymphoma.
O non-Hodgkin's lymphoma.
O lupus.
Answer:
The presence of Reed-Sternberg cells in an individual indicates that the person has [tex] \small{\underline {\boxed{ \sf{Hodgkin's \: \: lymphoma.}}}}[/tex]
Which structures of this organism work together to carry out all of its life
functions?
Answer:
nucleus
Explanation:
help can be needed please!
Answer:
can't see
Explanation:
i can't see the pic
What is the function of the Calvin cycle?
it generates NADH for use in mitochondrial ATP production
it produces NAD+ from NADH to keep glycolysis going when oxygen is absent
it fixes atmospheric carbon dioxide gas
it creates a proton gradient
Answer:
it generates NADH for use in mitochondrial ATP production
The function of Calvin cycle is to generate NADH for use in the mitochondrial ATP production in the process of cellular respiration. Thus, the correct option is A.
What is Calvin cycle?
Calvin cycle is also known as the C3 cycle or citric acid cycle. It is the cycle of chemical reactions where the carbon atom from the carbon cycle is fixed into various different molecules of sugar. It occurs in the chloroplast of the plant cell.
Calvin cycle is an important mechanism as it involves performing chemical reactions by plants to fix carbon from CO₂ into the three-carbon sugars (glyceraldehyde). Afterward, the plants and other creatures can transform these three-carbon compounds into amino acids, nucleotides, and other more complex sugars like starches. Calvin cycle generates NADH for use in the mitochondrial ATP production.
Therefore, the correct option is A.
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The La Brea Tar Pits in Los Angeles are the site of millions of fossils from the ice age. Woolly mammoths, giant sloths, dragonflies, and other plants and animals from this era have been found in these pits. Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. Why do you think this is the case? What can scientists learn about Los Angeles' climate history by studying the specimens found in these tar pits?
Answer:
Scientists learn how climatic changes during the ice age affected life in this region by analyzing specimens found in these tar pits
Explanation:
La Brea Tar Pits are a group of tar pits in Los Angeles. Many preserved remains of ancient organisms (i.e., fossils) were extracted from the tar, including, among others, Western horses, prehistoric camels, three-toed tapirs, rodent bones, insects, mollusks, wood, plants, etc. The oldest fossils have been dated to be approximately 38,000 years ago by radiometric techniques. Moreover, the Last Glacial Period was the most recent glacial period within the Quaternary glaciation, which encompassed the period between 115,000 to 10,000 years ago. This period (LGP) encompassed the Last Glacial Maximum (LGM), which occurred about 20,000 years ago. In consequence, many of the fossils found in La Brea Tar Pits evidence how the ice age affected life in this region. Moreover, many of the fossil species extracted from the tar are still present today, thereby indicating how these species adapted to fluctuating climatic conditions, whereas certain species couldn't adapt fast enough as the environment changed and therefore they went extinct.
Answer:
Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. I believe this is the case because since bigger beasts couldn't take shelter in small protected burrows, perhaps they were done in by fierce environmental conditions. Or maybe with so many plants dying off, big herbivores simply had nothing to eat, and as they died out, so did the big carnivores. By studying the spicemens found in these tar pits scientists can learn about Los Angeles climate change. For instance, new scientific studies at the La Brea Tar Pits are probing the link between climate warming and the evolution of Ice Age predators, attempting to predict how animals will respond to climate change today.
Explanation:
C What is the important of making prority
Answer:
Priorities will guide you in life's decisions and keep you on track. Most importantly, priorities will give you the confidence to say "no." They help you identify what's truly needed in your life, versus what someone else feels is important.
Answer:
The importance of it are Establishing priorities is necessary in order to complete everything that needs to be done. Prioritization is important because it with allow you to give your attention to tasks that are important and urgent so that you can later focus on lower priority tasks.
Why monosaccharides are sweet whereas polysaccharide are not
Answer:
sweet-receptors bind to specific types of molecules, namely monosaccharides and disaccharides. Polysaccharides are not as sweet because they do not readily bind to the sweet-receptors on our tongue, as the other smaller molecules do
Answer:
ywetywte
Explanation:
gwhwhwhebebd
Describe an equation which is the summary of the process by which a mesophlly cell gives out oxygen.
Answer:
An equation is math so i dont really know
Explanation:
Dude im sorry im just trying get some racks
A mitosis inhibitor is a medication that is designed to prevent mitosis in certain cells. Why would these be helpful in the treatment of tumors
Answer:
because cancer cells are able to grow and eventually spread through the body (metastasize) through continuous mitotic division. Thus, cancer cells are more sensitive to inhibition of mitosis than normal cells.
Explanation:
