Answers
Answer:
Reproductive strategies are not an either/or sort of affair; some organisms fall somewhere between semelparity and iteroparity reproduction. In addition to various reproductive strategies, organisms differ in their survivorship strategies. Some organisms are at high risk of dying early in life, but if they can survive long enough, they have a decreasing probability of dying as the years go on. Well, to a point anyway. Other organisms have a steadily increasing probability of dying while still others live for a long time with the probability of dying only increasing dramatically after a certain (often old) age.
I really hope this helps, stay safe!
Related Questions
Drag each label to the correct location. Sort the examples based on whether they describe a physical change or a chemical reaction. Please help!!
Answers
Answer:
See explanations below.
Explanation:
growth of seed into seedling
- chemical (bio-chemical) change. The seed will never be there in its form again, the properties of the growth are different from the seed.
wax melting
- physical change. When heat is withdrawn, it reverts to the same solid wax, with only different physical properties (such as shape or texture).
making caramel
- chemical change. it is almost like burning part of the sugar content. The browning cannot be changed back to white sugar, smells and tastes different. However, on part of the sugar has undergone chemical change.
Tarnishing of silver
- chemical change. The brown substance is silver sulphide due to reaction of silver with sulphur dioxide present in minute quantities in the air. The silver can be made to shine again by REMOVING the silver sulphide, not by reversing the change.
grinding wheat to make flour.
- physical change. The compound is still flour that contains mainly starch. The chemical properties are the same as wheat, in providing nutrients, etc.
Adding copper and gold to make jewelry.
- physical change. The two metals together make an allow, which is basically a mixture. Both physical and chemical properties of the individual metals remain.
Approximately how many total ATP equivalents are generated by the complete oxidation of one molecule of acetyl CoA via the citric acid cycle?a) 1.5b) 2.5
c) 10
d) 30
Answers
Answer:
C. 10 ATP molecules
Explanation:
In the citric acid cycle is a series of eight reactions steps in which a two-carbon molecule, acetyl-CoA, enters the cycle through citrate and two atoms of carbon are removed as two molecules of carbon dioxide.
The energy generated by the complete oxidation of one molecule of acetyl CoA via the citric acid cycle is conserved in the production of three NADH molecules, one FADH₂ and one ATP molecule. Each NADH molecule transfers two electrons to oxygen in the electron transport chain, forming 2.5 ATP molecules each in the process. Similarly, an FADH2 molecules transfers two electrons to oxygen in the electron transport chain yielding 1.5 ATP molecules.
Total ATP molecules produced:
3 NADH + 1 FADH2 + 1 ATP = (2.5 × 3) + (1.5 × 1) + 1 ATP = 10 ATP molecules
Therefore, 10 ATP molecules are generated by the complete oxidation of one molecule of acetyl CoA via the citric acid cycle.
A student pours a spoonful of dirt into a cup of water. The water and dirt are stirred together. The water turns a light brown color. Some dark pieces float to the top of the cup and another dark layer forms on the bottom of the cup. Which statement BEST describes the contents of the cup?
Answers
The statements described the contents of the cup is that it is a mixture.
What is the cup?Let us notice that the question that we have here is incomplete but to the best of my ability I would try to explain the concept that is involved here. We know that a mixture would imply any combination of the substances that are not chemically combined together.
We can see that both the water and the dirt are independent substances. They do not mix up at all when we put the dirt in the water. They would continue to be separate from each other although they have been mixed together.
Hence, we can see that putting the dirt and the water in the same place would only lead to the production of a mixture of substances as we have described in the answer stated here.
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I really need help for homework Biology 102 and it's Due: Feb 27, 2023 at 11:59 PM EST
Question 8 parts 1, 2 and 3
Answers
Tracing the path that air takes from entering the body to reaching the lungs:
Air enters the nasal cavities.Filtered, warm, moistened air passes to the pharynx.Air moves into the larynx.Air moves past the glottis.Leaving the upper respiratory tract, air enters the trachea.Air travels down one of two bronchi.Air reaches the lungs, where it moves through bronchioles to alveoli for gas exchange.What is the role of the pharynx in breathing?The pharynx, which is part of both the respiratory and digestive systems, serves as a passageway for air and food. During breathing, the pharynx helps to conduct air from the nasal cavity or mouth to the larynx, where it enters the trachea and eventually the lungs.
The pharynx also plays a role in preventing food or liquid from entering the trachea by closing off the opening to the trachea during swallowing.
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5. Which of the following does NOT correctly match a fault with its boundary? *
A. normal fault & convergent boundary
B. normal fault & divergent boundary
C. reverse fault & convergent boundary
D. strike-slip fault & transform boundary
Answers
MITOSIS
occurs in a
which is a
that undergoes
forming
having the
number of
as the
MEIOSIS
100
Answers
Mitosis occurs in a somatic cell, which is a non-reproductive or body cell that undergoes cell division, forming two daughter cells. In contrast, Meiosis occurs in reproductive cells, which are known as germ cells, that undergo two rounds of cell division to form four haploid daughter cells.
What is Mitosis?Mitosis is a type of cell division that occurs in eukaryotic cells, which are cells that have a nucleus and other membrane-bound organelles. During mitosis, a single cell divides into two identical daughter cells, each with the same number and type of chromosomes as the parent cell.
The process of mitosis can be divided into four stages: prophase, metaphase, anaphase, and telophase. During prophase, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and spindle fibers begin to form. In metaphase, the chromosomes line up along the equator of the cell and are attached to spindle fibers at their centromeres. During anaphase, the spindle fibers shorten and pull the sister chromatids of each chromosome apart, toward opposite poles of the cell. Finally, during telophase, the nuclear envelope reforms around each set of chromosomes, the spindle fibers disassemble, and the cell undergoes cytokinesis, or division of the cytoplasm, resulting in two identical daughter cells.
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How is a large flood most likely to lead to ecosysteminstability?A. By leading to more food for animal populationsB. By providing more water for animal populationsC. By killing many organisms and washing away soilD. By leading to overpopulation of plant species
Answers
Ecology: Ecosystems, ecological succession.
A flood is when land that is usually dry gets submerged in water, this can be caused by natural disasters such as hurricanes or typhoons, or after heavy rain when the environment had been modified and can't retain the water.
Floods are not only about the amount of water but also about the force it has. Floods can destroy even houses and bridges, and they left behind sediment dragged from one area to another one.
In an ecosystem, such an amount of water not only drowns the organisms living there but also modifies the characteristics of the soil. Floods are one of the causes of secondary succession, changing the species structure of an ecosystem.
This means the right answer would be C. By killing many organisms and washing away soil
How do most consumers create the energy to survive? Choose 3.
Answers
Answer:
eating other organisms.
Breaking down animal remains and wastes .
The Sun.
Explanation:
Consumers must obtain their nutrients and energy by eating other organisms. Decomposers break down animal remains and wastes to get energy. Decomposers are essential for the stability and survival of an ecosystem.
The Sun is the major source of energy for organisms and the ecosystems of which they are apart. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water.
Brain-List?
Which five statements about hemoglobin and myoglobin structure are true? Each hemoglobin molecule can bind four oxygen molecules, and each myoglobin can bind only one oxygen molecule. Molecular oxygen binds irreversibly to Fe2+ in heme. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent a change in the oxidation state of the iron ion. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron ion. Heme is composed of an organic protoporphyrin component and a metal ion. Each iron ion can form six coordination bonds: One of these bonds is formed between iron and oxygen. Hemoglobin and myoglobin are heterotetramers.
Answers
Answer:
The correct statement about the hemoglobin and myoglobin is as follows:
1. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.
3. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.
4. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
5. Heme is composed of an organic protoporphyrin component and a metal atom.
6. Each iron atom can form six coordination bonds: One of these bonds is formed between iron and oxygen.
Which of the following organisms have the ability to do photosynthesis
Answers
Answer:
any plants
Explanation:
Carbon is unique because it can form
Answers
On the model of mitchondrion, highlight the area (arrows) that is the ELECTRON TRANSPORT CHAIN in yellow.
Place an X over the protein that is inhibited by cyanide.
Color the phospholipid bilayer blue.
A special protein called ATP synthase generates ATP. Find it on the diagram and color it red
Answers
The electron transporter chain is the sequence of redox reactions that occur in the mitochondrial membrane as electrons flow through different electron transporters resulting in energy production. In the attached files you will find the image with the colored structures.
What is the electron transporter chain and how does cyanid inhibit it?
The electron transporter chain is a series of molecules and proteins located in the internal mitochondrial membrane. It constitutes a series of enzymatic reactions to release and save energy for the organism’s correct functioning.
Along the chain, there are four proteinic complexes in the membrane that contain the electron transporters and the enzymes necessary to catalyze the electrons' transference from one complex to the other.
Different redox reactions occur to pass electrons from NADH along the chain.
Released energy creates a proton concentration gradient used to synthesize ATP.
Cytochrome oxidase (P450) is one of the enzymes involved in this electron transport, which ends in producing energy. It is the complex IV.
Ion cyanide is a powerful cellular poison that inhibits cellular respiration by binding to the ferric ion of cytochrome oxidase.
Cyanide-ferric binding inactivates the enzyme and blocks electron transference. The chain is interrupted, leading to no oxygen consumption and no ATP production.
Since muscles do not get to have ATP as a source of energy, they weaken.
The interruption of the electron transporter chain produces an anaerobic state that could be culminating.
In the attached files you will find the image with the colored structures. Complex IV is the one affected by cyanide.
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In 3–5 sentences, relate the impact of the industrial use of water for hydraulic fracturing (fracking) with the availability and quality of water.
SOMEONE PLEASE HELP!
Answers
Answer:
The industrial use of water for hydraulic fracturing, or fracking, can have a significant impact on the availability and quality of water resources. Fracking requires large volumes of water to be mixed with chemicals and injected underground to extract oil and gas from shale formations. This high demand for water can strain local water supplies, especially in regions already facing water scarcity or drought conditions. Moreover, the water used in fracking becomes contaminated with various chemicals and pollutants, making it challenging to treat and potentially affecting the quality of nearby water sources through leakage or spills. The potential depletion and contamination of water resources due to fracking underscore the importance of careful management and regulation to ensure the sustainable use and protection of water supplies.
Explanation:
Alicia conducted an experiment to find out which insulating material holds in the most heat. She did multiple trials of each test and recorded observations of each trial. Why did Alicia do more than one trial? to improve the variability of her data to prevent other people from using the data incorrectly to help in arriving at a conclusion even with inaccurate data to reduce the likelihood of errors in the experiment
Answers
Answer:
ITS D
D: to reduce the likelihood of errors in the experiment
Explanation:
Edge 2021
How could an insertion error occur during DNA replication?
Answers
An insertion error during DNA replication can occur when an extra nucleotide is added to the growing DNA strand.
During DNA replication, the DNA double helix unwinds and separates into two strands. Each strand serves as a template for the synthesis of a new complementary strand. DNA polymerase, an enzyme involved in DNA replication, adds nucleotides to the growing DNA strand based on the template strand. However, sometimes errors can occur in the DNA polymerase's activity.
In the case of an insertion error, an additional nucleotide is inserted into the newly synthesized DNA strand. This can happen if the DNA polymerase mistakenly incorporates an extra nucleotide during the replication process. As a result, the DNA sequence becomes longer by one nucleotide at the specific insertion point.
These errors can disrupt the reading frame and potentially alter the protein-coding sequence, leading to changes in gene function or protein structure.
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Genetic mutation which can lead to diversity between organisms can be caused by
Answers
Answer:
DNA
Explanation:
Mutations are changes to an organisms DNA that creates diversity within a population by introducing new alleles. Some mutations are harmful and are quickly eliminated from the population by natural selection harmful mutations prevent organisms from reaching sexual maturity and reproducing.
Which organelle would not be found in a prokaryotic cell? A) nucleus b)cell membrane c)Cytoplasm d)Genetic material
Answers
Answer:
\(A) nucleus\)
2. You are handed a mystery pea plant with tall stems and axial flowers and asked to determine its genotype as quickly as possible. You know that the allele for tall stems (T) is dominant to that for dwarf stems (t) and that the allele for axial flowers (A) is dominant to that for terminal flowers (a).
a. Identify all the possible genotypes for your mystery plant.
Answers
If the allele for tall stems (T) is dominant to that for dwarf stems (t) and the allele for axial flowers (A) is dominant to that for terminal flowers, then the possible genotypes for a pea plant with tall stems and axial flowers may be TTAA TTaa, TtAA and TtAa.
What is a dominant allele?In genetics, a dominant allele is a gene variant that mask the expression of another gene variant for the same locus, which is then referred to as the recessive allele.
In this case, we have two alleles from different loci (i.e. tall stem T allele and axial flowers A allele) that dominate to other two alleles (i.e., the dwarf stems and the allele for terminal flowers, respectively).
Therefore, with this data, we can see that the dominant alleles are those that mask the expression of the recessive alleles in heterozygous individuals.
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6.what three protozoans are in the phylum Ciliophora.
Answers
Answer:
Spirostomum ambiguum , Strombolian lagenula, Paramecium caudatum, Paramecium aurelia, and Spirostomum minus
Explanation:
Which of these is part of the biosphere?
a. bees
b. sand
c. rivers
d. clouds
Answers
Answer:
c
Explanation:
(HELP FAST) A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right as: 1, 2, 3, 4, and 5. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Perch, Frog, Pigeon, Rats, and Human. A text box below the branching tree diagram is labeled Derived Shared Characteristics. In the box it says from left to right Terrestrial during all stages, Jaws, Walking on two legs, Mammary glands and hair, and Four limbs.
Look at the possible derived shared characteristics, shown in the text box. Think about where these should be placed along the branching tree diagram. Where in the branching tree would you most likely write "lives on land during all life stages"? Explain your answer.
Answers
"The derived shared characteristic 'Terrestrial during all stages' should be placed at the base of the tree diagram."
SupThe characteristic "Terrestrial during all stages" is a shared characteristic among all five species being compared in the branching tree diagram. This means that it is a characteristic that all of these species have in common, and therefore it is likely that it was present in their common ancestor.
Since the base of the tree represents the common ancestor of the species being compared, it makes sense to place this characteristic at the base of the tree. This also helps to show that this characteristic is a defining trait of the group of species being compared and that it has been present in their lineage since their common ancestor.
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why RNA chain is always transcribed on 3' to 5' template strand ?
Answers
Explanation:
RNA growth is always in the 5′ → 3′ direction: in other words, nucleotides are always added at a 3′ growing tip, . Because of the ANTIPARALLEL nature of the nucleotide pairing, the fact that RNA is synthesized 5′ → 3′ means that the template strand must be oriented 3′ → 5′.
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What causes a population's
growth to level off?
A. The population suffers a dramatic loss from a
natural disaster.
B. The population has an increase in birth rate.
C. The population reaches its carrying capacity.
Answers
The population which reaches its carrying capacity causes a population's growth to level off. Thus, the correct option is C.
What is Population growth?Population growth is the increase in the number of living organisms on the Earth. For most of the human history, the population size was relatively stable. However, with the innovation and industrialization of the society, energy, food, water, and medical care became more available and reliable which results into increase in the population growth rate.
As the population size of a species approaches its carrying capacity in the environment, the intensity of the density-dependent factors such as food and other resources increases. For example, competition for resources, predation, and rate of infection increase with the population density and can also eventually limit the population size with are not present in sufficient amount.
A population growth faces level off or decline when the population reaches to its carrying capacity.
Therefore, the correct option is C.
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2. What must happen in DNA for transcription to begin?
A The bonds between the base pairs must break.
B. The bonds between the base pairs must duplicate.
C. The bonds between the bases and the sugar phosphate backbones must break. Vc
D. The bonds between the bases and the sugar phosphate backbones must duplicate.
Answers
The bonds between the base pairs must break, to expose DNA for transcription to begin, hence option A is correct.
What is transcription?A little section of the DNA double helix is first opened and unraveled during transcription in order to reveal the nucleotides on each DNA strand.
RNA polymerase connects to a promoter region close to the start of a gene to start transcription (directly or through helper proteins).
A new, complementary RNA molecule is created by RNA polymerase using a template from one of the DNA strands (the template strand).
Therefore, to expose DNA for transcription to begin, hence option A is correct.
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What was the first genetically engineered product to reach the marketplace.
O amoxicillin
O human insulin
O tissue plasminogen activator
O penicillin
Answers
Answer:
b) Human insulin
Explanation:
Answer:
penicillin
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fill in the blanks below with the proper label or vocabulary word that matches each stage
Answers
B.) The Earth’s axis is tilted 23.5 degrees
Please help me with this question please
Answers
17) cerebellum
18) temporal lobe
iam sorry about the others their answers are not in the paragraph
The life activity known as synthesis is chiefly characterized by the:
A) Distribution of essential compounds throughout an organism.
B) Production of complex molecules from simpler ones.
C) Elimination of waste products from the organism.
D) Regulation of physiological activities.
Answers
Answer:
B) Production of complex molecules from simpler ones.
Explanation:
Synthesis is the process of combining simpler molecules to form more complex ones. This can occur through various chemical reactions within an organism. The other choices do not accurately describe the process of synthesis.
A) Distribution of essential compounds throughout an organism - This refers to the transport of essential molecules within an organism, rather than the production of complex molecules from simpler ones.
C) Elimination of waste products from the organism - This refers to the removal of waste products, rather than the production of complex molecules.
D) Regulation of physiological activities - This refers to the control of physiological processes, rather than the production of complex molecules.
A researcher changes the DNA in a soybean plant so that it produces offspring with a resistance to weed killer.
Which best describes this scenario?
genetic engineering
gene therapy
cloning
selective breeding
Answers
Answer:
genetic engineering,
Explanation:
go search the question up, a quizlet think will pop up and quizlet is never wrong.
Answer: Genetic Engineering
Explanation:
Genetic engineering or also called genetic modification is the direct manipulation of an organism's genome in order to bring about a desirable trait in such organism. In genetic engineering procedure, the organism manipulated is called TRANSGENIC or GENETICALLY MODIFIED (GM) organisms.
In this case, a researcher is said to change the DNA (genetic material) in a soybean plant so that it produces offspring with a resistance to weed killer. This describes a genetic engineering procedure in which the soybean plant is manipulated to yield a desired trait, which is resistance to weed killer.
If your good with macromolecules pls answer
Answers
2). A
3). B
4). A
5). C
6). B
7). C
8). C