Which of the following IS NOT a reason why estuaries are important?
they provide a nursery for many types of fish
they are the least polluted areas of the ocean.
they are extremely productive
they are great for transporting goods for manufacturing and trade
they control flooding by acting as a buffer
Which of the following flower tissues is reproductive?
carpel
petal
sepal
tepal
Answer: a. Carpel flower tissues is reproductive.
Explanation: The carpel is present in the inner part of a flower known as a female reproductive organ. A carpel consists of a style, an ovary, and a stigma. The style is a long, slender tube that connects the stigma and the ovary. The Stigma is present in the top, sticky area of a carpel, where pollination takes place. Stigma is a place where the pollen germination takes place once the pollen deposited on the stigma. An ovary is a female reproductive part, which produces ova.
Which of the following is true about unicellular organisms?? URGENT
A they often have specialized cells
B they are made up of one cell
C they lack organelles
D they are all plants
The correct answer is B, unicellular organisms are made up of one cell. They can have complex structures and functions, but they do not have specialized cells, are not all plants, and do not lack organelles.
The subject at hand is unicellular organisms. When considering unicellular organisms, the following statement is true: they are made up of one cell. Therefore, the correct answer to the question is B - they are made up of one cell. Unicellular organisms may have complex internal structures and can perform all the life functions within that single cell. They may have organelles and specialized structures, such as flagella for movement. However, unicellular organisms do not have specialized cells since each organism is comprised of a single cell. They are not all plants but can be found across various classifications such as bacteria, protozoa, and some algae.
Turkins, a cross between a chicken and a turkey, are raised on some farms in Wyoming. This is an example of _____.
a)selective breeding
b)hybridization
c)cloning
d)recombinant DNA
Answer:
b) hybridization
Explanation:
Hybridization is the process of generating an offspring known as a hybrid from a cross between two individuals belonging two different species in order to accommodate the characters of these species into a single individual.
Since chicken and turkey are different species, a cross between them would lead to the generation of a hybrid known as Turkin.
In plant, algae, fungi, and most bacteria cells, there is a rigid layer that surrounds the cell membrane and gives protection, support, and shape to the cell. what is this layer called?
a. cell wall
b. cytoplasm
c. chloroplast
d. plasma membrane
What is the name of the organelle found in animal cells whose function is energy production?
A. Mitochondrion
B. Chlorophyll
C. Chloroplast
D. Nucleus
Answer:
Mitochondrion
Explanation:
Foods that allow microorganisms to grow are called parasites. TRUE or FALSE
How does the cell membrane help cells maintain homeostasis
The cell membrane maintains homeostasis by controlling the movement of substances in and out of the cell, allowing cells to change shape as needed and recognizing other cells for tissue and organ formation and immune response.
Explanation:The cell membrane plays a crucial role in maintaining homeostasis within a cell. Homeostasis refers to a state of balance within a living organism, which is essential for the survival and functionality of its cells. A significant function of a cell's
plasma membrane
is to define the cell and determine its interaction with its environment. This membrane is selectively permeable, allowing it to control what substances enter or exit the cell.
Growth and dynamic homeostasis
are maintained through the constant movement of molecules across this membrane. The cell membrane must also be flexible to allow cells to change shape as required by their environment. Lastly, the surface of the plasma membrane carries markers for cell recognition, which is essential for tissue and organ formation, and the distinction between 'self' and 'non-self' in the immune response.
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Which is the first step in the scientific method
1) One difference between carbohydrates and lipids is that A) Lipids will dissolve in water but not carbohydrates. B) Carbohydrates will dissolve in water but not lipids. C) Carbohydrates contain hydrogen, carbon, and oxygen and lipids do not. D) Lipids contain hydrogen, carbon, and oxygen and carbohydrates do not.
Final answer:
Carbohydrates and lipids both contain carbon, hydrogen, and oxygen, but differ in that carbohydrates will dissolve in water while lipids will not due to their nonpolar hydrophobic characteristics. So the correct option is B.
Explanation:
One difference between carbohydrates and lipids is that carbohydrates will dissolve in water but not lipids. Lipids contain the same elements as carbohydrates, which are carbon, hydrogen, and oxygen. However, lipids are predominantly composed of hydrocarbon chains that are nonpolar and hydrophobic, meaning they do not dissolve well in water, whereas carbohydrates are generally polar molecules which can dissolve in water.
Both lipids and carbohydrates serve as sources of energy. However, they differ in how they store and provide this energy. Carbohydrates generally provide quick energy, while lipids store energy for long-term use. The solubility of lipids is different than that of carbohydrates due to their physical structure and the presence of fewer polar functional groups. Lipids are more soluble in organic solvents, like dichloromethane, due to their nonpolar nature.
how does atp become adp
ATP becomes ADP through hydrolysis, which involves the breaking of a high-energy phosphate bond by the addition of water, releasing energy. This reaction is reversible; ATP can be regenerated from ADP and phosphate using energy from cellular respiration or photosynthesis.
Explanation:ATP (adenosine triphosphate) becomes ADP (adenosine diphosphate) through a process called hydrolysis. This involves the addition of a water molecule (H2O) to ATP, which results in the breaking of one of its high-energy phosphate bonds. The reaction releases energy that the cell can use for various functions. Specifically, the equation for this reaction is ATP + H2O → ADP + Pi + energy. The inorganic phosphate released is denoted as Pi.
Cells can regenerate ATP from ADP and Pi by reversing the hydrolysis reaction. This reverse process, called phosphorylation, requires an input of energy. It can occur during cellular respiration or photosynthesis, where the energy is sourced from the breakdown of food or absorption of sunlight, respectively. The reverse equation is often expressed as ADP + Pi + free energy → ATP + H2O.
Those phosphate bonds in ATP are high energy because the phosphate groups have negative charges that repel each other. It takes energy to keep them together, and when the bond is broken, energy is released. This is why ATP is often referred to as the energy currency of the cell.
A fold where the youngest rock layer is in the center is called a(n) _____.
monocline
decline
syncline
anticline
A geological fold where the youngest rock layer is at the center is known as a syncline, a concave-upward fold with beds dipping towards the center.
A fold where the youngest rock layer is in the center is called a syncline. In geological terms, a syncline is a trough-like or concave-upward fold in which the beds dip towards the fold's central axis. By contrast, anticlines are the opposite, where the oldest rock layers are in the center and the rock layers dip away from the central axis. Synclines often appear as 'U' shaped formations in the Earth's surface and are indicators of the relative ages of strata within folded rock formations.
Describe the relationship between carrying capacity and earths resources
Sheila was born a female with only one X chromosome on the 23rd pair. As a result, she is infertile, has difficulty learning, and did not develop breast tissue and rounded hips as her female peers did. Which disorder is likely to be diagnosed?
PKU
Down
Klinefelter's
Turner's
triple X
Answer:
Turner's syndrome
Explanation:
Human females have 22 pair of autosomal chromosomesand an extra pair of sex chromosomes (XX). What means that in normal conditions a female has 46 chromosomomes
Aneuploidy is a biological condition where an individual have an abnormal number of chromosomes. One type of aneuploidia is a monosomy, where there is only one chromosome from a pair.
The Turner syndrome is a monosomy in which the female is missing one of the sex X chromosome. Women with Turner syndrome are in most of cases infertile. Some of the Signs and symptoms related to thus syndrome are: learning disability, no breast or hips normal development, short stature , Small fingernails, etc.
Cedric has a low fever and minor aches. Yesterday, he went to the doctor for his booster shot and received the flu shot. Which best explains why he has this reaction?
a behavior in which animals move toward or away from a light source.
Answer: Phototaxis
Explanation: Phototaxis is the phenomenon by which locomotory movement of the organism occurs towards or away from the stimulus of the light.
This is advantageous for the phototropic organism as they can move efficiently towards the sunlight which helps them to make food by the help of sunlight and other substances.
The phototaxis is called positive if the movement is towards sunlight and negative if the movement is against light.
A triglyceride that is liquid at room temperature
A triglyceride that is liquid at room temperature is called OIL
LIPIDS (TRIGLYCERIDES):
Lipids are a type of biomolecule found in nature. They can be sterols, triglycerides, unsaturated fats, saturated fats, phospholipids etc. Triglyceride is a form of lipid formed from the esterification of a glycerol and three fatty acids. However, triglycerides can either be solid or liquid at room temperature. Solid triglycerides are called FATS while liquid triglycerides are called OILS.Therefore, a triglyceride that is liquid at room temperature is called OIL.
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Cells function together to form tissues. The four main types of tissues in animals are _____.
epithelial
blood
connective
muscular
nervous
bone
Which of the following best describes the solar radiation absorbed by and radiated from earth?
a. Most incoming solar energy is absorbed by the atmosphere.
b. Only a small fraction of energy radiating from Earth is from the atmosphere.
c. The Earth’s surface is responsible for a small fraction of heat radiation to space.
d. Earth’s surface absorbs little of the energy that strikes as solar radiation.
Answer: c. The Earth’s surface is responsible for a small fraction of heat radiation to space.
Explanation:
In later ages the large amount of sun's energy is reflected back by the terrestrial surface back to the space. But now due to the abundance of large concentration of greenhouse gases in the atmosphere is responsible for the absorption of thermal energy from sunlight by these gases causing the atmosphere to be hot. This is the reason of global warming. Now only small fraction of heat is radiated back to the space.
Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high A) polarity. B) surface area. C) heat capacity. D) surface tension.
Answer;
-Heat capacity
-Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high heat capacity.
Explanation;
-Heat capacity is the capability of water to absorb heat without undergoing an increase in temperature. For water to increase in temperature, its molecules must be made to move faster within the water; which requires breaking hydrogen bonds that absorbs heat.
What is the purpose of the biogeochemical cycles?
A.to cycle energy through a food chain
B.to recycle matter through the biosphere
C.to recycle rocks through the layers of Earth
D.to cycle nutrients through the human body
What is it called when a molecule uses energy to move across a semipermeable membrane?
A. Diffusion
B. Active transport
C. Passive transport
D. Osmosis
Answer: Active Transport
Explanation:
The movement of the particles across membrane needs energy. Energy is required in the condition where there is a movement of particles from a lower concentration to higher concentration.
It requires cellular energy for the movement of the particles. The larger molecules needs energy to move across concentration gradient.
Muscle cells would contain a high number of
A. Lysosomes
B. Mitochondria
C. mRNA
D. Golgi bodies
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the (Homozygous, Heterozygous) genes cause the (Recessive, Dominant) traits to mask the (Dominant, Recessive) traits.
SOS:
The answers is:
In a dihybrid cross, the F2 will have nine genotypes, but only four phenotypes because the Heterozygous genes cause the Dominant traits to mask the Recessive traits.
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Answer
heterozygus, dominant , ressesive traits
Explanation:
i did this test and got it right
The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because _______. Answer: The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because California Rice Commission and individual growers to further enhance the habitat [ value of California’s rice fields to waterbirds. This collective approach creates synergy for fully realizing the wildlife values in California rice
The farming methods promoted by the California Ricelands Habitat Partnership are best described as beneficial to both farmers and wetland species because the foraging birds there eats the remains or leftover rice in the field and in turn overwhelm the ground making tilling additional.
This benefits both the birds and farmers as birds gain food from there and the farmers get a free tilling of their land.
Is cooking an egg endothermic or exothermic chemical reaction?
Answer:
1:endo
2:exo
3:exo
4:neither
Explanation:
The elastic rebound theory suggests which of the following?
Answer;
The elastic rebound theory suggest that; Most earthquakes are produced by the rapid release of energy stored in rock that has been subjected to great forces.
Explanation;
The elastic rebound theory was suggested by Henry Feilding Reid, who made observations and summarized that the earthquake occurs as a consequence of an elastic rebound of elastic strain energy that was previously stored in the rocks on either side of the fault.
The elastic-rebound theory explains how energy is produced when an earthquake occurs. According to this theory as adjoining plates on the Earth's surface move in opposite directions, then the rocks which span the opposing sides of the incipient fault are subjected to extreme shear stress.
The Elastic Rebound Theory explains the phenomenon of earthquakes caused by the sudden release of stored energy in strained rocks. When the stress exceeds the rock's strength, it fractures and rebounds, causing an earthquake.
Explanation:The Elastic Rebound Theory explains how energy is stored in rocks and is then released once the rocks crack or rupture, causing an earthquake. This theory is highly related to the study of tectonic plate movements and earthquakes. In a strained rock formation, when the stress exceeds the rock's strength, the rock fractures and subsequently rebounds, causing it to shake or vibrate leading to an earthquake. This displacement or movement of rocks is sudden and rapid, thus the term 'rebound'.
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Which of the following plant adaptations is not found in deciduous forests? a. They have broad leaves. b. They can absorb nutrients from the ground. c. They stretch toward the Sun. d. They keep their leaves year round.
Answer: d. They keep their leaves year round.
Plants in deciduous forests have special adaptations for survival in deciduous forests it depends upon the seasonal variations. In winters, because of lack of proper sunlight leaves are shed from the plants. As, without proper sunlight they are not able to conduct photosynthesis also the budding sites where the leaves originate also get blocked in order to prevent water loss through transpiration. Therefore, plants in deciduous forest does not keep their leaves year round.
What conducts electric current in solutions?
elements
electrolytes
atoms
molecules
Answer:
Electrolytes
Explanation:
An electrolyte is a substance that conducts electricity when dissolved in a polar solution e.g water. They are particles that carry a positive or negative electric charge called Cations and Anions respectively.
Electrolyte can also be referred to as a substance that dissociates into ions in solution and acquires the capacity to conduct electric currents. It becomes an ionic conductor when fused or dissolved in a suitable solvent.
Electrolytes include Sodium, pottasium, calcium, bicarbonate and magnesium amongst other body minerals. These minerals carry a small electric charge in fluid environment.
Electrolytes conducts electric current in solutions. Therefore, the correct option is option B.
In order for our bodies to function properly, electrolytes are necessary, and realising this can do a lot for our general health. They are minerals that, when dissolved in water, take on an electrical charge and are necessary for a number of physiological activities. Sodium is one of the most well-known electrolytes. It is essential for maintaining the equilibrium of bodily fluids, neuron activity, and muscular contraction. Sodium influences how much water the body retains, which influences blood pressure. However, consuming too much sodium can result in health problems like high blood pressure and fluid retention.
Therefore, the correct option is option B.
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Extensive commercial logging, the use of wood for cooking and heating, and excessive clearing of land by subsistence farmers has led to __________________ in most areas of Sub-Saharan Africa.
A)
erosion
B)
deforestation
C)
desertification
D)
water pollution
Answer:
the answer is b
Explanation: