Answer:
The correct answer is B)
Explanation:
According to discovering made in relation to evolution, the Australopithecus Africanus (discovered in 1924), the Australopithecus Garhi (discovered in 1990), and the Homo Habilis (discovered in 1960) all shared the same period - 2.5-1.0 MYA.
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Sort the terms and phrases as to whether they function in or describe primary growth or secondary growth?
Place each term or phrase to the appropriate bin. If the term or phrase describes both primary and secondary growth, place it to the "both" bin. If the term or phrase describes neither primary nor secondary growth, drag it to the "neither" bin.
1) apical meristem
2) cork cambium
3) elongation
4) provides structural support
5) increases exposure to light
6) increases vascular flow
7) growth in thickness
8) occurs in plants that live many years
9) occurs in plants that live only one year
10) lateral meristem
11) vascular cambium
Bins:_________.
a) primary growth
b) secondary growth
c) both
d) neither
Answer:
Explanation:
An increase in length of the shoot and the root is termed to as primary growth of a plant. It occurs as a result of cell division in the apical meristem. Secondary growth is identified by an increase in thickness or girth of the plant caused by cell division in the cambia or lateral meristems.
1) apical meristem- primary growth
2) cork cambium - secondary growth
3) elongation - primary growth
4) provides structural support - secondary growth
5) increases exposure to light - primary growth
6) increases vascular flow - secondary growth
7) growth in thickness - secondary growth
8) occurs in plants that live many years - both primary and secondary growth
9) occurs in plants that live only one year - primary growth
10) lateral meristem - secondary growth
11) vascular cambium - secondary growth.
_______on the blood determine a person’s blood type. _______in the blood attack foreign blood not compatible with the antigens on the blood.
Answer:
the first one is Antigens and the second one is Antibodies
Explanation:
Antigen is usually present on the blood that determine the person’s blood type. While antibodies in the blood attack foreign blood not compatible with the antigens on the blood.
What are antigens?Blood group antigens seem to be either sugars or proteins that bind to various components of the red blood cell membrane. The antigens of the ABO blood group, for example, are sugars.
Whereas antibodies are present in the blood that determines certain antigens present in the blood that are non compatible.
Thus, the answer for blank 1 is antigen, and for blank 2 is antibody.
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Water is essential for the growth of crop plants. But excessive supply of water should be avoided. Give reason.
Answer:
Soil can become waterlogged. The water can cut off the air supply to the roots and to the organisms that live in the soil. If the roots do not receive enough oxygen, the plants will die because they rely on oxygen to complete photosynthesis.
Explanation:
Answer:
We should avoid watering the plants so much
Explanation:
It can lead to the growth of plants and will not grow properly
Which statement about wind energy is correct? A. Wind energy is a renewable resource that can meet all of the United States's electricity needs. B. Wind energy is a nonrenewable resource that does not present hazards for birds and bats. C. Wind energy is a nonrenewable resource that is always reliable. D. Wind energy is a renewable resource that is relatively inexpensive.
Answer:
a and c
( but mostly a )
Explanation:
wind power and wind are renewable
there is A LOT of wind on the earth so if there is a lot of wind turbines and wind, then it is possible.. kinda
wind turbines are VERY EXPENSIVE dispite of their size and how much energy they need and produce
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how do i answer this question
name the chemical compound present in the cell ?
Answer:
Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules. Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. Consequently, the interactions between water and the other constituents of cells are of central importance in biological chemistry.
A scientist is studying an organism and has clarified it as an animal. Which statement must be true about the organism?
- It is multicellular.
- It displays radial symmetry.
- It has a backbone.
- It contains cells without nuclei.
Answer:
it is multi-cellar
Explanation:
i took the test
Answer:
A
Explanation:
Edge 2022
If a plant has a high concentration of minerals inside its root cells, but does not have enough energy for active transport, what could happen to the minerals?
Question Progra
A. The plant cells would lock and not let anything in or out.
B. They would be drained from the plant through diffusion into the lower concentration outside the root.
C. Nothing, they would stay where they are.
o
D. The plant wouldn't need active transport, the remaining minerals would be attracted into the root because of the high concentration
of minerals already there.
Answer:
The wuold be drained from the plant through diffusion into lower concentration outside the root
Explanation:
Answer:
b
Explanation:
Living organisms respond to changes in environmental conditions such as temperature. Which series lists the correct
order in which the body would respond to such a change?
O tissue, cell, organ, organ system, organism
O tissue, cell, organ system, organ, organism
O cell, tissue, organ, organ system, organism
O cell, tissue, organ system, organ, organism
cell , tissue , organ, organ system, organism
Beginning with NADH, track the flow of electrons through the ETC. A. Complex I, Complex II, Complex III, Complex IV B. Complex II, Ubiquinone, Complex III, Cytochrome C, Complex IV. C. Complex III, Ubiquinone, Complex II, Cytochrome C, Complex IV, Oxygen D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.
Answer:
D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.
Explanation:
The track the flow of electrons through the ETC.
D. Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen.
Flow of electrons in ETC:In the mitochondrial ETC, electrons flow when the reduced electron (NADH, FADH₂) are oxidized. In plants and other photosynthetic organisms, an ETC serves to oxidize NADPH. They travel down the electron transport chain, releasing the electrons that they once had. The end result is loads of energy, approximately 34 ATP (energy molecule).
Thus, the track of flow will be: Complex I, Ubiquinone, Complex III, Cytochrome C, Complex IV, Oxygen
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¿Podrá la planta producir frutos dentro de una caja oscura?
Answer:
No.
Explicación:
No, la planta no podrá dar fruto en una caja oscura porque para su crecimiento la planta necesita luz solar y sin luz solar no se produce fotosíntesis y sabemos que en el proceso de fotosíntesis, las plantas preparan su propia comida y crecen en tamaño. Este proceso de fotosíntesis solo ocurre en presencia de luz solar, por lo que en la oscuridad no hay luz solar, por lo que no se produce la fotosíntesis y la planta morirá.
What does an organism's genotype describe?
Answer:
genetic's makeup or a person's genes created from organisms
Which of the following environmental changes is most difficult to survive?
A. An annual rainy season
B. Cyclic temperature fluctuations
c. Cyclic sunlight fluctuations
D. A forest fire
Answer:the anwser is b.
Explanation:
The following environmental changes is most difficult to survive is Cyclic temperature fluctuations.
What are climate fluctuations?Fluctuation or any form of regular change, except a trend and abrupt change. Oscillation to be subject to fluctuation tendentially variable and in a smooth and mobile way.
Among the main human activities that cause global warming and consequently climate change, the burning of fossil fuels for energy generation, industrial activities and transport; land use conversion;
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what is the meaning of sex linked genes
Answer:
Sex linked genes is a trait in which a gene is found on a sex chromosome, males are the one that carry most/ more of the mutation.
Explanation:
Hope it helps.
Which structures are parts of the central nervous system?
The central nervous system(CNS) is composed of the encephalon and spinal cord.
What makes a hypothesis scientifically
Answer:
The basic idea of a hypothesis is that there is no pre-determined outcome. For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation
Explanation:
A hypothesis is an educated guess. When scientist make a hypothesis, it gives them a reason to make an experiment to decide whether its accepted or not and they also learn more about that certain subject while doing so. When scientist make a hypothesis, it gives them a reason to make an experiment to decide whether its accepted or not and they also learn more about that certain subject while doing so. Comments
Answer:
Click on this:
What is the correct order of blood flow from the heart to the lungs in the fetal circulatory system? a. Ductus venosus, heart, vena cava, ductus arteriosus, arteries b. Vena cava, ductus venosus, heart, ductus arteriosus, arteries c. Ductus venosus, vena cava, heart, ductus arteriosus, arteries d. Vena cava, heart, ductus venosus, ductus arteriosus, arteries
Answer:
When the blood enters the right atrium, most of it flows through the foramen ovale into the left atrium. Blood then passes into the left ventricle (lower chamber of the heart) and then to the aorta, (the large artery coming from the heart).
Explanation:
Answer:c.
Ductus venosus, vena cava, heart, ductus arteriosus, arteries
Explanation:
The circulatory system consists of the heart and blood vessels. In a fetus, the circulation of blood is different from circulation after delivery largely due to the fact that the lungs are not in use, rather, the fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord.
Blood from the placenta is carried to the fetus by the umbilical vein. While some of this blood enters the fetal ductus venosus and is carried to the inferior vena cava, some others enter the liver. The blood from the inferior vena cava then moves into the right atrium of the heart. The foramen ovale, an opening between the right and left atrium in the fetus directs most of the blood flow from the right into the left atrium, thereby, bypassing pulmonary circulation. Most of the blood from the right atrium flows into the left ventricle and is pumped through the aorta to the rest of the body.
Some of the blood from the right atrium however, enters into the right ventricle and is pumped into the pulmonary artery. The ductus arteriosus which is a special connection between the pulmonary artery and the aorta in a fetus, directs most of this blood away from the lungs and into the arteries.
The image shows sedimentary rock layers with index fossils and a fault.
Rock layer diagram. 5 layers on each side of a fault. Layers 1 to 5, top to bottom on the left, layers 6 to 10, top to bottom on the right. The following pairs are the same: 1 and 8; 2 and 9; 3 and 6; 4 and 7. Layers 5 and 10 do not have matches.
Which statement accurately describes the rock layers?
Layer 8 is older than layer 1.
Layer 3 is younger than layer 6.
Layer 4 and layer 10 are the same relative age.
Layer 2 and layer 9 are the same relative age.
Answer:
Faulting created the differences in layers, and layers 2 and 9 are the same age, so the correct answer is D.
Explanation: I just took the test : )
Answer:
D
Explanation:
which element is found in proteins and nucleic acids but not in carbohydrates
proteins: H,C,N,O &S,P
Nucleic:H,C,N,O,&P
Carbohydrates:H,C,O
Lipids :H,C,O,N,P.
1. Which of the following is NOT a result of convection current? a) The air in a room is cooled by an air conditioner b) Wind blows towards the beach from the sea. c) The water in a kettle is heated and boils d) The wax covering an iron rod melts when the rod is heated.
Answer:
its D
Explanation:
because conduction happens through solids and the others are obviously conventional current
The wax covering an iron rod melts when the rod is heated ( D ) is not a result of convection current
Convection is the transfer of heat energy from an area of higher concentration to an area of lower concentration and it occurs in fluids and gases. while conduction is the transfer of heat energy from one object to another through the direct contact of the objects and this occurs between solids.
The transfer of heat from the heated rod to the wax covering occurs because of the direct contact the wax has with the heated rod therefore it is conduction and not a convection current.
Hence we can conclude that The wax covering an iron rod melts when the rod is heated is not a result of convection current
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In the diagram below, which organelle is a mitochondrion, which provides the
cell with energy?
Answer:where is the picture
Explanation:
Answer:
i dunno
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A female had tubular pregnancy and had to remove her oviducts. Will this affect her in anyway with respect to reproduction ? justify?
Reproduction will be highly affected.
Since there are two oviducts one will be removed as a result of the ectopic pregnancy.
Hence, there will be a defect in the carrying of the ovum from the ovary to the uterus. There will be delivery of the ovum only in the the unaffected oviduct. This can lead to non-fertility.
Ectopic pregnancy is a condition in which there is an implantation of the zygote in a location other than the the uterus.
How do you plan to analyze and communicate your results?
Answer:
hi
Explanation:
Issue a formal report. ...
Present case studies or stories of impact. ...
Develop press releases. ...
Create snapshots or postcards. ...
Incorporate visual aids. ...
Produce a promotional video.
Answer: Issue a formal report.
Present case studies or stories of impact.
Develop press releases.
Create snapshots or postcards.
Incorporate visual aids.
Produce a promotional video.
Explanation:
A cell with the homologous chromosomes undergoes meiosis, and gametes are produced. Is it possible for a chromosome of a gamete to
contain the alleles for gray body and brown eyes
Answer:
No
Explanation: The chromosomes are always inherited as complete unites
Hope this helps
Which statement explains one reason why unconformities occur?
A. Rocks along a fault break and move
B. Igneous rock forms at earth’s surface
C. No sediment is deposited over a long time.
D. Igneous rock forms between sedimentary layers.
Answer:
A. Rocks along a fault break and move.
Explanation:
Hope it helps.
Answer:
C) no sediment is deposited over a long time
Explanation:
edge
Which is the role of the gall bladder?
Answer:
Explanation:
Almacena bilis, un líquido producido por el hígado para digerir las grasas. Cuando el estómago y el intestino digieren los alimentos, la vesícula biliar libera bilis a través de un tubo denominado conducto biliar común.
Chloride ions, Cl-, follow actively transported Na+ ions from the nephrons into the blood. Would you not expect the Cl- concentration to decrease as fluids are extracted along the nephron?
Answer:
Bicarbonate ion, HCO3- (which has a similar charge to chloride ions) also follow sodium ions into the blood. Also, potassium ions, K+ are transported into the nephron so some chloride ions and bicarbonate ions remains in the nephron to balance the charge.
Explanation:
Sodium is the primary positively charged electrolyte in extracellular fluid. Most of the solute reabsorbed in the proximal tubule is in the form of sodium bicarbonate and sodium chloride. Water is also reabsorbed in order to balance osmotic pressure
When sodium ions are reabsorbed into the blood, few of the substances that are transported with Na+ on the membrane facing the lumen of the tubules include Cl- ions, Ca2+ ions, amino acids, and glucose. Sodium is actively exchanged for K+ using ATP on the basal membrane.
In the distal convoluted tubule, K+ and H+ ions are selectively secreted into the filtrate, while Na+, Cl-, and HCO3- ions are reabsorbed to maintain pH and electrolyte balance in the blood.
Some chloride ions remains in the nephron to balance the charge of the secreted K+ ions and also due to the bicarbonate ions that are removed.
The concentration of Chlorine decreases as fluids are extracted along the nephron because it is not soluble in water. With an increase in the fluid extraction along the nephron, there is the reabsorption of more water and since Chlorine cannot be diluted by water, its concentration decreases. With the more reabsorption of water and increase in its concentration as the fluid moves through the nephron, the relative concentration of chlorine reduces.
This gradient is mainly caused by NaCl and urea. NaCl is transported by the ascending limb of Henle's loop which is exchanged with the descending limb of the vasa recta.
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Put the following events that occur in a reflex arc in the correct order. Rank the options below. The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ Open choices for matching The interneuron synapses with a motor neuron The interneuron synapses with a motor neuron Open choices for matching The sensory neuron synapses with an interneuron The sensory neuron synapses with an interneuron Open choices for matching A sensory neuron conducts action potentials through the nerve to the spinal cord A sensory neuron conducts action potentials through the nerve to the spinal cord Open choices for matching A sensory receptor detects a stimulus
Answer: Please see the explanation column for answers
Explanation:
A reflex arc is a nerve or neural pathway that controls a reflex action giving fast response to a stimulus without the conscious act of the brain. Here, the sensory neurons receive stimulation then synapses or connects to spinal motor neurons nerve cells which then connects to muscle cells acting as effectors.
Ranking the events that occur in the reflex arc in correct order gives
1st ---- A sensory receptor detects a stimulus
2nd---A sensory neuron conducts action potentials through the nerve to the spinal cord
3rd----- The sensory neuron synapses with an interneuron
4th----- The interneuron synapses with a motor neuron
5th------- The motor neuron conducts action potentials through the anterior root and spinal nerve to an effector organ.
Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A.
Human liver cells make proteins that promote homeostasis that neurons do not.
B.
Different species of bacteria have different shapes and structures to their cells.
C.
The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D.
Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answer:
A
Explanation:
Human liver cell make proteins that promote homeostasis that neurons don't have.
Homeostasis is the regulation of an internal steady environment.
The word anabolism refers to constructive, buildup, or synthesis reactions while the word catabolism refers to destructive, breakdown, or digestive reactions. What does it mean to say that in a cell, catabolism fuels anabolism?
Answer:
Anabolic reactions need energy.
Explanation:
Anabolic reactions (like the build up of fatty acids) are active processes and need energy. Catabolic processes like respiration will provide the ATP required to build up macromolecules. Thus, catabolism fuels anabolism.