Answer:
b
Explanation:
If you use a microscope to view an unknown cell, what structure should you look for to tell you if it is a eukaryotic cell?
A Cell membrane
B Cytoplasm
C DNA
D) Nucleus
Answer:
If you use a microscope to view an unknown cell, should you look for a nucleus option D.) to tell you if it is a eukaryotic cell
Explanation:
Letters A through F on the graph below represent different species that are related but show different structural, functional,
and behavioral adaptations.
Increasing Level
of Complexity
more
Time (millions of years)
One inference that can be drawn from the graph is that
A) speciation may be either gradual or abrupt.
B) speciation occurs only gradually, over long periods of time.
C) species E is the ancestor of species F.
D) species E resulted from the extinction of species A, B, C, and D.
A) speciation may be either gradual or abrupt.
Which of the following best describes genes?
a: polymers of peptides used to make proteins
b: nucleotide sequences in dna that code for traits
c: pieces of rna that produce carbohydrates
d: collections of nucleic acids that generate energy
Answer:
b: nucleotide sequences in dna that code for traits
Perennial plants in the genus Asclepias (milkweeds) contain compounds called cardiac glucosides (cardenolides) that can be toxic for animals. Monarch butterfly larvae feed on Asciepias sp. but are not harmed by the cardenolides. Instead these molecules accumulate in the tissues of the caterpillar and are present in the tissues of the adult butterfly. Because of these toxins in their tissues, Monarch butterflies are unpalatable to insectivorous birds. Another species of butterfly, the Viceroy, looks very similar to the Monarch in its bright coloration and distinctive patterning but was thought to lack a toxin. Because Monarch butterflies are toxic it was long thought that the similar appearance of nontoxic Viceroy butterflies was an example of:
Answer:
Batesian mimicry
Explanation:
Batesian mimicry refers to a form of biological resemblance by which a harmless prey species evolved in order to imitate another harmful species for a common predator, thereby increasing its chances of survival. This defensive behavior was described by Henry W. Bates, who made ecological observations of butterflies in the Brazilian rainforest. Thus, an innocuous species that show harmful signals against a predator will gain protection against this predator. Batesian mimicry is a type of mimicry that benefits from the predator's learned avoidance behavior.
What is the main difference between the two parts of protein synthesis?
A. The first builds RNAs and the second builds proteins
B. The first happens in the presence of oxygen and the second is anaerobic
C. The first requires the input of energy from the cell and the second is passive
D. The first take place in the cytoplasm and the second takes place in the nucleus
Answer:
A
Explanation:
transcription creates mRNA, while translation builds proteins
In the process of protein synthesis, the first builds RNAs and the second builds proteins. The correct option is A.
What is protein synthesis?Cells create proteins through a process known as protein synthesis. Transcription and translation take place simultaneously.
The conversion of genetic information from DNA to mRNA in the nucleus is known as transcription. Initiation, elongation, and termination are its three stages.
Creating a polypeptide, or protein consisting of a chain of amino acids, is the sole goal of protein synthesis. Keratin, a protein, is produced in the cells of the hair follicle.
In the first stage, messenger RNA (mRNA) is created. After leaving the nucleus, mRNA moves into the cytoplasm and joins a ribosome.
At this time, the second stage of translation starts, during which a specific protein molecule is created by reading the genetic instructions contained in the mRNA molecule.
Thus, the correct option is A.
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When one tectonic plate is forced underneath another plate is broken down in earths mantle
Answer:
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What is the correct mRNA transcription of the following DNA sequence? ATGGCACCTTAC
A. UACCGUGGAAUG
B. AUGGCACCUUAC
C. CAUUCCACGGUA
D. CATTCCACGGTA
The process of transcription produces the mRNA sequence from the DNA. The mRNA transcription of ATGGCACCTTAC will be UACCGUGGAAUG. Thus, option A is correct.
What is mRNA transcription?Transcription is the process of the formation of mRNA from the replicated DNA strand of the cell. It produces an mRNA transcript that is a single strand and further codes for amino acids.
The mRNA transcript forms by the base pairing with the DNA template. If the DNA sequence is ATGGCACCTTAC then according to the base pairing rule the adenine (A) pairs with uracil (U) in mRNA, and guanine (G) pairs with cytosine (C). In mRNA, the adenine binds with uracil and not thymine, and hence A pairs with U, whereas the G-C bond remains the same.
The DNA strand: ATGGCACCTTAC
The mRNA sequence will be: UACCGUGGAAUG
Therefore, option A. UACCGUGGAAUG is the mRNA transcript.
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What does a Prokaryotic cell look like?
Answer:
This is what it look like
Explanation:
What holds bones together but is loose enough to allow bones move
Answer:
Tendons connect muscle to bone and move the bones or structures to which they are attached.
Explanation:
When molecules pass through a cell membrane using special proteins
A. Active transport
B.osmosis
C.diffusion
D. Facilitated diffusion
which part of the dna molecule is considered the genetic code that will be read by the cell? phosphates, Deoxyribose sugars, enzymes, nitrogen bases (A,C,G, and T) Plzz help ASAP
Answer:
A,C,G
Explanation:
I hope I answered this question right
Give an example of the law of conservation of mass.
If ur correct i'll give brainliest.
Answer:
In a chemical reaction mass is neither created nor destroyed
Explanation:
HOPE THIS HELPED
Answer:
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example when wood burns, the mass of the soots, ashes, and gasses equal the original mass of the charcoal and the oxygen when it first reacted
why do hot springs in Yellowstone national park at wooden walkway built around them
¿Cuál es la cantidad mínima recomendable de ingesta de agua al día para conservar el equilibrio de las funciones del cuerpo humano? *
Answer:
se recomienda tomar un litro de agua por cada 35 kilogramos de peso corporal
Explanation:
El agua es un componente fundamental para llevar a cabo todas las funciones celulares. Algunas de las funciones más importantes que requieren agua son, por ejemplo, la eliminación de desechos (orina y heces), mantenimiento de la temperatura corporal alrededor de 35,5 °C (trasnpiración), protección de órganos internos, lubricación de las articulaciones durante tareas de locomoción (movimiento), etc. Durante la jornada, el organismo pierde grandes cantidades de agua mediante los procesos de respiración, transpiración, en la orina y heces. En consecuencia, la reserva de agua que posee el cuerpo humano debe ser recuperada mediante una ingesta adecuada. La Organización Mundial de la Salud (OMS) recomienda ingerir a diario un litro de agua por cada 35 kilogramos de pesos. Es importante resaltar que estas cantidades pueden variar dependiendo de las características físico/fisiológicas del individuo (por ejemplo, edad, práctica deportiva, etc.), como así también de las características ambientales donde se desarrolla el individuo (por ejemplo, un clima tropical puede aumentar los requerimientos diarios).