Answer:
B. DNA unzips before step 1.
Explanation:
This question is describing the process of gene expression, which is made up of two major stages namely; transcription and translation. Transcription is the process by which mRNA is synthesized from a DNA template while translation is the process where protein (amino acid sequence) is produced using the mRNA transcript.
This stages of gene expression has been summarized in the steps listed by Shura. However, prior to the formation of an mRNA molecule in step 1, the double stranded DNA has to unwind i.e. separate into single strands as initiated by the enzyme RNA polymerase. Therefore, the list should read as follows:
- DNA unzips
- A strand of RNA is made.
- RNA leaves the nucleus.
- RNA moves to the ribosome.
- A protein is made.
Choose all that apply.
Select the hormones, secreted by the pituitary, that regulate reproduction in both males and females.
**Select 2 choices**
1)luteinizing hormone
2)progesterone
3)follicle-stimulating hormone
4)estrogen
5)gonadotropin-releasing hormone
6)testosterone
Answer and I will give you brainiliest
Answer:
follicle stimulating hormone (3)
and
luteinizing hormone (1)
hope this helps!!
(b) Explain how the addition of a phosphate group to certain amino acids of Brec likely affects the tertiary structure and function of Brec. Explain how
the addition of a small RNA could prevent the activation of kinase D?
Answer:
Protein phosphorylation can activate/deactivate protein function, while small RNAs can be used for repressing translation of mRNAs through the RNA interference (RNAi) pathway
Explanation:
Protein phosphorylation is one of the most important posttranslational modifications (PTMs) that acts to activate, inhibit, or reversibly switch on/off protein function. Protein phosphorylation confers a reversible and versatile process that cells use to transmit signals and respond to environmental stimuli. This PTM is well known to modify the tertiary structure of the protein and thus activate/inhibit protein functions such as, for example, signaling pathways associated with protein interactions. In consequence, protein phosphorylation can be used by a cell to regulate Brec activity. On the other hand, small non-coding RNAs (ncRNAs) such as, for example, microRNAs (miRNAs), small interfering RNAs (siRNAs), and PIWI-interacting RNAs (piRNAs), are regulatory molecules that bind by complementary base pairing to messenger RNAs (mRNAs) in order to repress translation and/or trigger mRNA degradation through the RNA interference (RNAi) pathway. The RNAi pathway is widely used in molecular biology to silence genes of interest (for example, in this case, the gene that encodes for the kinase D protein).
1. Adding the phosphate group to the amino acid chains is known as phosphorylation. This attachment affects the tertiary arrangement and function of Brec.
Amino acids join together to form the protein that needs to be stimulated and deactivated for proper functioning.Protein phosphorylation is very crucial in post-translation modification.For protein function, it acts as an activator, inhibitor, reversibly on and offs the switch.Phosphorylation assures a reversible process to the cell to transmit signals for the cell functioning.Therefore, Brec activity can be controlled by the phosphorylation of proteins.2. Small RNA's are RNA fragments which is around 150 nucleotide in length.
Functionally significant small RNA's such as siRNAs, microRNAs scaRNAs and many other acts as regulatory molecules which target and adheres to the mRNA transcripts.This binding inhibits the translation process or degrades the mRNA by activating the RNA interference (RNAi) pathway.RNAi pathway is used to suppress the activation of the kinase D.To learn more about phosphorylation and small RNA follow the given link below:
https://brainly.com/question/83713
Local factors are important for regulating blood flow to tissue capillary beds. For example, in skeletal muscle tissue that is actively contracting, levels of oxygen start to decrease as the oxygen is utilized, and levels of carbon dioxide increase as it is produced during cellular respiration. Decreasing levels of oxygen in the tissue cause the smooth muscle forming sphincters in arterioles to relax.
Answer:
true
Explanation:
In smooth muscle contraction, the sphincters relax in the face of the drop in partial tissue pressure of oxygen, and the increase in protons or positively charged hydrogen molecules. In this way, when the sphincter relaxes, the easier and faster contraction of an autonomous and simultaneous nature is conducted.
Melting glaciers is a serious threat to the environment. What is the possible consequence of melting glaciers on polar bears?
A.
The polar bear population will increase.
B.
Polar bears will migrate to southern areas.
C.
Polar bears will migrate to northern areas.
D.
Polar bears will thrive successfully.
Polar bears will migrate to southern areas. Thus the correct option is B.
What is climate change?Climate change refers to long-term shifts in temperatures and weather patterns. These shifts may be natural, such as through variations in the solar cycle.
Due to global warming many species become vulnerable to climate change. One such species is polar bear. Polar bears live in arctic region and this region is getting warmer due to climate change. Warming of arctic region results into melting of sea ice.
Existence of sea ice is important for the survival of polar bears because seals are the main food of the polar bear and they hunt seals on the sea ice. Therefore, without sea ice, polar bears cannot hunt enough seals to eat thus, it will be difficult for them to survive.
For more information regarding global warming, visit:
https://brainly.com/question/3553382
#SPJ2
Scientific theory is based on
A) Data collected over time
B) A general claim by scientist
C) The best guesses of a scientist
D) an idea that can be proven true
Answer:
I think it's D
Explanation:
Cause usually a scientist creates a hypothesis or theory so they can prove that it's true.
¯\_(ツ)_/¯
Answer:
A) Data collected over time
Describe at least two signs that indicate a severe storm, like a derecho, is on the way.
Answer:
bank of heavy shelf clouds , extreme weather
Explanation:
Derecho is characterised by wind damages swath beyond 240 miles & wind gusts 58 mph
Signs of an approaching derecho are - bank of heavy clouds (arcus clouds) paired with extreme weather events
____ is the natural process by which water is continually recycling between the Earth's atmosphere,
OA Carbon cycle
OB nitrogen cycle
OC condensation
OD water cycle
Answer:
Option D
ans : water cycle
Which direction does blood flow in arteries?
it flows towards the heart
Jessica and Taylor are playing in a seesaw. Taylor is suspended in the air and is unable to move her seat down. Explain why Taylor cannot swing back down.
Jessica is standing on her seat causing Taylor to be suspended in the air.
The force pushing down is less than the force pushing up on Taylor's seat.
The weight of Jessica is more than the weight of Taylor.
Jessica and Taylor are equal of weight.
Answer:
The force pushing down is less than the force pushing up on Taylor's seat. Jessica is standing on her seat causing Taylor to be suspended in the air.
Answer:
B)
Explanation:
hope this helps you! :)
Animals like elephants
consume these plants. Which
of these process(es) do
animals also do?
The given question is incomplete as it lacks the options required to answer the question, however, options for the question is as follows:
A. Photosynthesis
B. Cellular respiration
C. both A and B
d. None of the above
Answer:
The correct answer is - option A. cellular respiration.
Explanation:
Plants produce their food or glucose with the help of the photosynthesis process. Plants called autotrophs as they generate their food on their own whereas animals depend on plants and other animals for their food and energy.
Plants and animals both perform cellular respiration in order to convert the food or glucose to the useable energy form that is known as ATP. Cellular respiration converts glucose into energy and releases carbondioxide and water.
The animals have the process of the Cellular respiration, to produce energy from the food they eat.
Cellular Respiration:
It is the process by which all organism perform to generate energy as ATP from the Glucose and produce Carbon dioxide as by product.
Cellular Respiration uses Oxygen and glucose as reactant to produce ATP.It is occur in the mitochondria. Photosynthesis is not found in animals as they lake Chloroplast.Therefore, the animals have the process of the Cellular respiration.
To know more about Cellular Respiration,
https://brainly.com/question/12671790
How can gene flow, genetic drift, and natural selection all influence macroevolution?
Answer:
Macroevolution refers to large-scale evolutionary changes that break the species barrier and can give rise to new species and even affect higher taxonomic groups.The basic evolutionary mechanisms migration, genetic drift and natural selection can produce important evolutionary changes if given enough time.Large groups and macroevolutionary trends originate in gradual, adaptive stages, as a product of natural selection acting at the level of individuals , but operating for much longer periods of time.All depends on the mutations originating new alleles or genes, which imply the existence of very different characters from the pre-existing ones, and that these different characters are selected because they imply a better adaptation to the environment.
Explanation:
Macroevolution refers to the evolutionary changes that occur on a large scale, such as the genesis of high-ranking taxonomic groups: the appearance of species within their taxonomic groups, the appearance of evolutionary trends, the acquisition of anatomical characteristics that characterize the groups.For there to be an evolutionary change, then, new properties must emerge that constitute a new species. Evolution is a process of changes at the species level, distinct from those that occur in each individual organism. Gene flow is the transfer of alleles of genes from one population to another. Contributes to variation and diversity of individuals. Evolution is then the change of allelic frequencies over time.Macroevolution takes place through the process of natural selection, that is, the differential reproduction of individuals, and adaptive improvement over a very long period of time. This type of evolution is based on interpreting the appearance of new species or large groups, as well as mass extinctions, with the subsequent proliferation of new groups. The evolutionary changes that determine the origin of body plans are based on macromutations on which natural selection acts.
Plz help me I am timed
Answer:
geyser
Explanation:
The three main domain was identified by
Answer:
below
Explanation: Studies by Benjamin Bloom (on cognitive domain), David Krathwohl (affective domain) and Anita Harrow (Psychomotor domain) have been encompassed into the three domains of learning (Sousa, 2016)
The composition of ocean water can change.
True
False
Ocean Composition can change only if wastes, or substances are introduced into it.
Ocean Composition change?Ocean Composition cannot change because it already contain the fixed amount of constituents in it.
It can change also if some particles or substances are introduced into it.
Ocean refer to water that have more concentration of salt. It is also called seawater and it contain mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of some substances such as particles, gases, dissolved organic and inorganic substances.
Therefore, Ocean Composition cannot change because it already contain the fixed amount of constituents in it.
It can change also if some particles or substances are introduced into it.
Learn more on ocean water from the link below.
https://brainly. com/question/1292930
What are the environmental factors that define a tropical rainforest environment?
Answer:
Very rainy, wet, and hot.
9. Using genetic code table translate this mRNA sequence. AUG CUU AAG GGU CGU CAU UAG.
Answer:
MET LEU LYS GLY ARG HIS STOP
Explanation:
Just find a genetic code table on the InterWeb and translate. Not too hard to do.
plzzz help will give brainliest and 50 pnts
Gravity and friction between the ocean and the wind that blows across its surface influence surface currents is the main force for surface ocean currents
Answer:
d
Explanation:
because is letter D
how are humans and plants alike in adjusting to changs in the environment?
Which structures protect the cell? Check all that apply.
cell wall
cell membrane
mitochondrion
nucleus
ribosome
Golgi body
Answer:
Golgi body
cell wall
ribosome
nucleus
Explanation:
Answer:
Cell wall.
Cell membrane.
:)
what happens when oceanic crust collides with continental crust at plate boundary
Explanation:
When oceanic crust converges with continental crust, the denser oceanic plate plunges beneath the continental plate. This process, called subduction, occurs at the oceanic trenches. The entire region is known as a subduction zone. Subduction zones have a lot of intense earthquakes and volcanic eruptions.
the basic unit that makes up all light.
Answer: Kelvin makes up light
Explanation:
hey guys so my sister wants a pet now and she is 14 she got a frog for herself but we returned cause i had to take car od it and it wasent fair for me what should i do she also wants to kinda take my frogs awau from me i spent my har earned money im 12 i takee care of them and they were for my burthday i spent my whole saving on them what should i do
Answer: Tell her that they are your frogs and that she should have taken care of them. And not to take her frogs or i will (expose and seceret to your family or somthing) Or just tell her to get a job and buy her own frogs and take care of them. Tell you mom and dad to> like its not your fault and tell them whats going on. You should try getting a snake or a hamster next. or spider.
Explanation:
The prolonged increase in heart and breathing rates during the snow skiing trip was probably a result of:______
a. activation of the sympathetic autonomic nervous system by the new experience.
b. activation of the parasympathetic autonomic nervous system by the new experience.
c. hypoxia caused by insufficient blood hemoglobin concentration to supply oxygen for exercise at the low oxygen pressure found at high altitudes.
d. depressed core body temperature (hypothermia) caused by exposure to cold temperatures at high altitudes.
Answer:
The correct answer is - option C.
Explanation:
Skiing generally happens on higher altitudes such as mountains. It is known that there is less oxygen is available at higher altitudes. There is low oxygen pressure at such height.
The prolonged increase in heart and breathing rate is due to less oxygen available for the cells. This condition is known as hypoxia caused by insufficient blood hemoglobin to supply oxygen for physical activities at higher altitudes.
1.Organisms without a distinct nucleus
2 .Structures that display characteristics of living organisms only
within living cells
3. The close association between two organisms where one or both
benefit muclism
4. Disease caused by a virus that leads to a gradual destruction of th
mmune system
5. Process by which bacteria break organic matter into simple
utrients which are then returned to the so
A term used to describe organisms that cause diseases e.g. bacteria
Scientists believe that there are three jeans what contribute to skin color in humans.
Which of these best describes the inheritance pattern of skin color?
A. Multiple allele in which offspring recessive three allele from each parent.
B. Multiple allele in which offspring recessive three allele from only one parent.
C. Polygenic in which offspring recessive three allele from each parent.
D. Polygenic in which offspring recessive three allele from only one parent.
Answer:
C. Polygenic in which offspring receive three allele from each parent.
Explanation:
In genetics, a polygenic inheritance is an inheritance that involves more than one gene i.e. more than one gene controls a particular trait. This is the case of the skin color trait in humans, which is controlled by three genes.
However, since each gene contains two alleles, each parent will contribute three alleles for the three genes to the development of an offspring i.e. three alleles from the father and three from the mother will result in three genes in the offspring, each containing two alleles.
Answer:D
Explanation:
What is brine rejection?
Answer:
hope this is right.
Brine rejection is a process that occurs when salty water freezes. The salts do not fit in crystal structure of water ice, so that salt expelled. Since the oceans are, this process is important in nature. In better understanding, as salt water freezes, the salt is pushed out of solution through channels in the ice. This process is called brine rejection or brine exclusion.
PLSSS IM BEGGING
Where do producers get energy to make sugars?
The air
The sun
Their food
The soil
Identify the order of the eight levels of taxonomy, from least specific (largest) to most specific (smallest),
using the drop down menus.
v Family
Genus
v Kingdom
v Domain
v Class
vSpecies
Order
Phylum
V
I use the mnemonic, "Dear King Philip Came Over For Great Spaghetti" to remember the eight levels of taxonomy from largest to smallest: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Answer:
Identify the order of the eight levels of taxonomy, from least specific (largest) to most specific (smallest), using the drop down menus.
✔ Level 6
Family
✔ Level 7
Genus
✔ Level 2
Kingdom
✔ Level 1
Domain
✔ Level 4
Class
✔ Level 8
Species
✔ Level 5
Order
✔ Level 3
Phylum
Explanation:
if an earthworm is 18mm long and is photographed and the picture is magnified 2.5x how long will it be in the picture?
Answer:
The earthworm will be 45 mm long in the picture
Explanation:
From the problem, we can take the original size of the earthworm to be 18mm.
Magnification can be obtained using the formula:
magnification = observed size/ original size.
Recall, we are given that the magnification is 2.5.
Hence, can evaluate the size in the picture to be
2.5 X 18mm = 45mm
Can anyone answer this question?
Answer:
D, sperm contains only 23 (to be combined with the egg which has 23 chromosomes too)