Answer:
Minimal media + glucose + streptomycin
Explanation:
Those capable of synthesizing galactose can grow in minimal media, the availability of streptomycin will destroy those who are susceptible to the antibiotic, whereas glucose, a carbon source from which galactose may be produced and will encourage growth.
Therefore:
The medium should not include galactose when selecting for gal⁺.
Streptomycin should be present in the medium to select against [tex]str^s[/tex].
The medium to choose is: Minimal media + glucose + streptomycin.
4.
(05.03 LC)
Match the term to its description. (4 points)
1.
Nebula
2.
Stars
3.
Absolute brightness
4.
Proto
a.
The total amount of energy emitted from a celestial object
b.
Star
c.
An interstellar cloud of dust and gases
d.
Gigantic balls of burning gas that give off light
Cierta especie de plantas varía en la forma de los bordes de sus hojas. Algunas de las plantas tienen hojas con bordes ondulados y algunas plantas tienen hojas con bordes rectos. En esta especie de plantas, un gen controla el rasgo de la forma del borde de la hoja. L representa el alelo dominante y I representa el alelo recesivo. Dos plantas con hojas de bordes ondulados se cruzan una con otra, produciendo 421 plantas. De las cuales, 298 plantas tienen hojas con bordes ondulados y 123 tienen hojas con bordes rectos. 3 ¿Cuáles son los fenotipos de las plantas madre en este cruce? А Lly II B Lly Ll C LL y ll DL y Ll
Answer:
A. Lly
Explanation:
Creo que esto es correcto, pero No sé si esto es correcto
Where is primary succession most likely to occur?
A. In the path of a hurricane
B. Where a forest has burned
O c. In the path of a flood
O D. Where lava has cooled
Answer:
"D" because primary succession occurs after glacial retreat or a volcanic eruptions. These events can create or uncover rocks which are pioneer species.
The RNA product of the genetic code above has the sequence ____________ . It binds to the small subunit of the ____________ . It is joined by the large subunit, completing the initiation stage of the process of ____________ .
The Genetic code was not given, however, The genetic code associated with this question is as follows:
ACCGCTTGCCGCAAT
Answer:
The correct answer is - UGGCGAACGGCGUUA, ribosome, translation.
Explanation:
The translation is the second process of protein synthesis followed by transcription. Transcription produces mRNA sequence from DNA gene sequence and bring it to the cytoplasm for translation to take place.
The gene segment ACCGCTTGCCGCAAT is encoded to mRNA sequence by converting bases to their complementary bases A to U and C to G and G to C and T to A so the new code will be - UGGACGAACGGUGUUA.
This mRNA binds with a small subunit of ribosomes and then a large subunit of ribosome joined and completes the first stage initiation of the translation.
n apneustic breathing, which is practiced by most marine mammals: A. A small amount of air is kept in the lungs before diving B. A large amount of air is kept in the mouth before diving C. Normal breathing is maintained before diving D. Several deep breaths are taken before exhaling and diving E. No actual breathing takes place before diving
Complete Question: In apneustic breathing, which is practiced by most marine mammals:
A. A small amount of air is kept in the lungs before diving
B. A large amount of air is kept in the mouth before diving
C. Normal breathing is maintained before diving
D. Several deep breaths are taken before exhaling and diving
E. No actual breathing takes place before diving
Answer: D. Several deep breaths are taken before exhaling and diving.
Explanation:
Common dolphins, whales and other marine mammals are known to undergo apneustic breathing. This breathing process is characterized by periodic or several breathe inhalation, followed by holding their breath and then exhaling them.
Marine mammals can afterwards, went on to dive. This process prevent high water loss out. Thus, they make fewer respirations while maximizing the amount of oxygen produced for optimal consumption.
What two genes a person actually has in their DNA; i.e. DD, Dd, or dd
A.genotype
B.phenotype
C.dominant
D.recessive
. In a replicating DNA molecule, the region in which parental strands are separating and new strands are being synthesized is called a(n)
Answer:
replication fork
Explanation:
The deoxyribonucleic acid (DNA) is a double-stranded helix composed of two long chains of nucleotides. The replication fork is a Y-shaped structure by which both DNA strands are separated in order to be replicated during cell division. In a cell, DNA replication starts at specific sites in the genome referred to as 'origins of replication'. A replication fork is generated by helicase enzymes that unwind and separate the DNA double helix strands by interrupting hydrogen bonds that hold the two DNA strands together. These DNA strands act as templates for the leading and lagging DNA strands. During DNA replication, the leading strand is synthesized continuously in the same direction as the replication fork, while the lagging DNA strand is synthesized in a direction away from the replication fork, in small pieces of DNA called Okazaki fragments.
Result of mechanical weathering or chemical weathering
Answer:
yea the above one is correct
What are these chromosomes consideredas?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.difference between trychocysts and nematocysts
Answer:
trichocyst is a threadlike organ in certain protozoans that can be discharged suddenly in order to grasp or sting while nematocyst is (biology) a capsule, in certain cnidarians, containing a barbed, threadlike tube that delivers a paralyzing sting.
Explanation:
Your destiny is in your own hands. Life is what you make out of it. Do you agree? Write five points in support of your view.
Answer:
yes I agree because your life is destined by fate and time and life is a very valuable and prestigious thing to waste so u must make the best out of your life
Changes in the genetic code of a human can be transmitted to offsprings if they occur in what?
If a mutation occurs in a germ-line cell or in simple words that one thing that will give rise to gametes, like egg or sperm cells, then this mutation can be passed to an organism's offspring.
Can someone make me report for bees and flowers I know what to do but don't know how to make it into 300 words
Choose a symbiotic relationship from the list below. research the relationship and write a 300 word report that includes the benefits of the relationship for either member, the harm done by the relationship and how this relationship has evolved. if the relationship was suddenly to stop what would happen to each member of the relationship? 1)bees and flowers
2)coral and algae (dinoflagellates)
3)remoras and sharks
4)microorganisms and human
5)intestines ticks and deer
Answer:
Bees and flowering plants have a mutualistic relationship where both species benefit.
Explanation:
Bees play a keystone role in the agricultural production and the beauty of our world through the pollination of fruits, vegetables, nuts, and flowers. The disruption of natural habitats leading to lack of "bee flowers,"
Once they reach adulthood, most living things take care of themselves and sometimes their offspring. However, certain plants and animals have developed helpful relationships with living things outside their own species. Scientists call such relationships "mutualistic relationships" because both organisms benefit from the arrangement. One of the most famous mutualistic relationships in nature is the relationship between bees and flowering plants. This relationship allows bees to feed their colonies and plants to reproduce
Bees and flowering plants have a mutualistic relationship where both species benefit. Flowers provide bees with nectar and pollen, which worker bees collect to feed their entire colonies. Bees provide flowers with the means to reproduce, by spreading pollen from flower to flower in a process called pollination. Without pollination, plants cannot create seeds.
How Bees Benefit From Flowers
Flowers benefit bees by providing them with all the food their colonies need, to survive. With the exception of a few species, bees are social insects that live in colonies of between 10,000 and 60,000 individuals. How many bees live in a single colony depends on factors such as the bees' species, the weather in their environment and how much food is available.
Bees feed on the nectar and pollen of flowers. Nectar is a sweet liquid substance that flowers produce specifically to attract bees, birds and other animals. Pollen is a powder that contains the male genetic material of flowering plants. Worker bees (bees whose job is to collect food for the colony) land on flowers and drink their nectar. This nectar is stored in a pouch-like internal structure called the crop. In the process of doing this, bees become covered in pollen. The pollen sticks to the bee's hairy legs and body. Some bee species even have sack-like structures on their legs for collecting pollen, called pollen baskets.
After collecting nectar and pollen from many different flowers, bees fly back to their colonies. They regurgitate nectar, mixed with enzymes, and expose the mixture to the air for several days, creating honey. This honey is used to feed the colony. Pollen is mixed with nectar to form a protein-rich substance called beebread. Beebread is primarily used to feed young developing bees, called larvae.
How Flowers Benefit From Bees
Bees benefit flowering plants by helping the plants reproduce, via pollination. Because plants cannot seek out mates the way animals do, they must rely on outside agents, called vectors, to move their genetic material from one plant to another. Such vectors include bees, certain birds and wind.
Flowering plants carry the male portion of their genetic material in their pollen. When bees fly from one flower to another, pollen is spread from plant to plant. If pollen from one flower is able to reach another flower of the same species, then that plant will be able to form seeds and reproduce.
Without bees, pollination and reproduction would be practically impossible for some plant species. This makes bees a vital part of every ecosystem they inhabit. Humans also greatly benefit from the pollination bees provide. Bees' work allows humans to enjoy fruits, vegetables and other plant products that would not be available otherwise.
Helping Bees
Bee flowers
You can help bees in four ways: plant bee flowers everywhere, provide nesting habitat, keep bee-flowers clean, and support our effrects to keeping
list some things you can do to eliminate deforestation (cutting down forests)
Answer:
1.Plant a tree.
2.Use less paper.
3.Recycle paper and cardboard.
4.Use recycled products.
5.Buy only sustainable wood products.
6.Don't buy products containing palm oil.
7.Reduce meat consumption.
8.Do not burn firewood excessively.
Explanation:
Hope this helps :)
which could you date with carbon-c-14
Answer:
C-14 can be used for dating fossils (50,000-70,000 years)
Explanation:
A fossil is a preserved remains of a once-living organism from a past geological age. Moreover, radioactive decay is a natural process by which an unstable atomic nucleus loses energy by emitting radiation. C-14 (Carbon 14) is a radioactive isotope of carbon that emits radiation which is widely used for dating fossils. C14 decays into the stable isotope C 12 and this radioactive isotope (C-14) has a half-life of 5730 yrs, thereby it is possible to use this rate of decay in order to calculate the age of an object according to the proportion of C14 remaining. The short half-life of C-14 indicates that this radioactive isotope cannot be used to date extremely old fossils (after 50,000-70,000 years, the C-14 dating method is no longer valuable for estimating the age).
If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
Answer:
There would be fewer rabbits for the foxes to eat.
Explanation:
i had the same question lol
Name the TWO major blood vessels that carry blood to and from the lungs.
Answer: The pulmonary artery (carries blood from the heart to the lungs), and the pulmonary vein (carries blood from the lungs to the heart).
Answer:
Veins carry to the heart, and arteries carry blood from/away from the heart.
Explanation:
The pulmonary artery carries (oxygenated/oxygen rich) blood from the heart to the lungs, while pulmonary veins carry (deoxygenated/oxygen poor) blood to the heart, from the lungs.
Which statement best describes how molecules interact with systems in the
human body
A. Carbon atoms combine with water to form the glucose molecules
that cells use to get the energy they need.
B. Oxygen molecules in the blood enter the cells of all body systems,
and the cells use them to get energy
C. Carbon dioxide molecules leave the body in exhaled air, and
oxygen molecules enter the body in inhaled air.
D. Oxygen molecules help carry other molecules in the blood as it
flows through the body.
Answer:
b
Explanation:
What is scientific consensus
Answer:
Scientific consensus is the collective judgment, position, and opinion of the community of scientists in a particular field of study. Consensus generally implies agreement of the supermajority, though not necessarily unanimity.
Explanation:
Please Mark me brainliest
which occurs during transition ?
What happens to a population when immigration increases?
A. The population size usually increases.
B. The emigration rate usually increases.
O C. The emigration rate usually decreases.
O D. The population size usually decreases.
Answer:d
Explanation:
When immigration increases, the population size usually increases, as shown in Option A, as immigration is the movement of individuals into a population from another population.
What is immigration?Immigration is the movement of individuals from one population to another. It involves the addition of new individuals to the population, which can increase its size. When more individuals enter a population, they bring with them new genes and genetic diversity, which can enhance the adaptive potential of the population. This can help the population better withstand environmental challenges and increase their chances of survival, but increased immigration can also have negative consequences. For example, it can lead to competition for resources among individuals, which can lead to a decrease in the quality and availability of resources for the population as a whole.
Hence, when immigration increases, the population size usually increases, as shown in Option A.
Learn more about immigration here.
https://brainly.com/question/7489579
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What happens in crossing over?
A. Chromosomes condense
B. Homologous chromosomes swap DNA
C.Homologous chromosomes separate
D.Cells divide into 2 new cells.
Answer:
B
Explanation:
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. Gametes gain the ability to be genetically different from their neighboring gametes after crossing over occurs.
Answer:
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity.
Explanation:
During crossing over, part of one chromosome is exchanged with another. Gametes gain the ability to be genetically different from their neighboring gametes after crossing over occurs.
¿Que científico investigó sobre la conductividad de las disoluciones acuosas de diferentes
sustancias ?
Answer:
Stephen Gray nacido en diciembre de 1666, Canterbury 7 de febrero de 1736, Londres fue un físico y científico natural inglés, conocido principalmente por sus aportaciones en el campo de la conductividad eléctrica.
the chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryoitc cells. This organelle is called
Answer:
Nucleus
Explanation:
The correct answer would be the nucleus.
The nucleus is a double membrane organelle that is found in all eukaryotic cells but not in prokaryotic cells. It contains the chromosomal hereditary material of eukaryotic cells and serves as the control center of the cell where other cellular activities are dictated.
The chromosomal hereditary materials of prokaryotic cells lie freely within the cytoplasm unlike what is obtainable in eukaryotic cells. The materials are package in a condensed fashion within the eukaryotic nucleus to form a structure known as chromatin. During cell division, the chromatin decondenses and become visible under the microscope as chromosomes.
Lipogenesis would most likely be stimulated by
insulin
glucagon
growth hormone
calcitonin
What types of materials could be broken dowr in a compost pile? A all recyclable materials B biodegradable materials C all materials that can be incinerated D glass, metal, and other raw materials
Answer:
All biodegradeable materials.
The table shows the number of cells at each stage of the cell cycle in a root tip meristem. One complete cell cycle takes 24 hours. The number of cells at each stage is proportional to the time spent at that stage. What is the length of time spent in metaphase?
a. 60.0 min
b. 86.4 min
c. 120.0 min
d. 178.8 min
Answer:
im completing a challenge
Explanation:
Which of the following statements is false?
Glycolysis does not require molecular oxygen
Alcoholic fermentation does not require molecular oxygen
Lactic fermentation does not require molecular oxygen
Oxidative phosphorylation does not require molecular oxygen
Answer:
Lactic fermentation does not require molecular oxygen
Explanation:
I think its this because I nevr heard that lactic fermentation needs molecular oxeygen??
Snake venom contains a mixture of enzymes, which include phospholipase that break down cell membranes, proteinases that destroy proteins, as well as amino acid oxidases and nucleotidases that break down the monomers for protein and DNA synthesis, which is why they can be so deadly. If you were bitten by a venomous snake you may be treated with an antivenom. In addition to antibodies that help your immune system recognize and fight the foreign molecules, what else does the antivenom most likely contain
Answer:
The correct answer is - Venom enzyme inhibitors.
Explanation:
The snake venoms are the complex mixtures of phospholipase A2s, disintegrins, serine proteases, C-lectins, and metalloproteases, and others. The snake venom phospholipase A2s (svPLA2s) enzymes found in most of the families of venomous snakes that cause anticoagulant effects, cardiotoxicity, neurotoxicity, and cytotoxicity, and other effects.
In antivenom, there are Venom enzyme inhibitors other than antibodies that help in neutralizing these enzymes by weakening or inhibiting these toxic actions.
Por que el ciclo de la materia es diferente al flujo de la energía?
Answer:
El flujo de la energía es unidireccional.
A diferencia de la materia, la energía no puede ser reciclada en un ciclo en los ecosistemas. En cambio, su flujo a través de ellos es una vía de un solo sentido, generalmente, de luz a calor.
