D. The elements have the same number of valence electrons in the outermost shell.
they are all in group 2 , alkali earth metals , so have 2 electrons in their outer shell :)
HELPPPPP!!!! ASAPPPPPPPPP!!! PLEASEEEE!!!!!
Which of the following are the animal phyla that contain worms?
Porifera, Platyhelminthes, Cnidaria
Platyhelminthes, Nematoda, and Annelida
Annelida, Cnidaria, and Porifera
Cnidaria, Porifera, and Placozoa
Answer:
Platyhelminthes, Nematoda, and Annelida
Explanation:
Cnidarians are like jellyfish and sea urchins, Porifera are sponges and Placozoa are barely even animals. They look more amoeba than anything. While those three groups are wormlike in appearance or true worms.
Answer:
The second one is correct.
I already did this question, and I got this correct!
:-) :-) :-) :-) :-) :-) :-) :-) :-)
Please help
Answer:
Explanation:
playing a game today just keeep it on gottttttttt
A strand of mRNA has the bases adenine-cytosine-uracil
. Which amino acid
corresponds to these bases?
Messenger
Second base in codon
RNA Codons U
A
UUU
UCU UAU 1
Phel
UGU
UUC
Tyr
UCC
UAC) UGC
Cys
U
Ser
UUA UCA UAA Stop UGA Stop A
UUG
Leu
UCG UAG Stop UGG Trp
CUU CCU CAU
ICGU
His
CUC CCC CAC) CGC
Pro
CUA CCA
Arg
CAA) CGA
CUG
ICCG
Gin
CAG CGG
AUU ACU
AGU
AUC
Ser
lle ACC AAC)
Thr
!
AGC
AUA ACA
AGA
AUG StartMe ACG AAG
Arg
AGG
GUU GCU GAU GGU
GCC GAC)
Asp
GGC
G
Val
Ala
GUA GCA
Gly
GAA
Glu
GGA
GUG GCG GAG GGG
Leu
First base in codon
Poco Poco Pocopus
Third base in codon
AAU Asn
AAA] Lys
GUC
Thr that stands for threonine amino acid will corresponds to these bases.
Threonine is used in the biosynthesis of proteins. What is mRNA?messenger RNA (mRNA), molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes).
mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template.To know more about amino acids here
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Answer:pro
Explanation:
do european wildcat eat foxes? i will mark brainliest
Which codon is the start signal for translation?
AUG
UAA
ATG
UGA
Answer:
UGA is the start signal for a translation.
Help please.
Biology.
Answer:
for the first it could effect how much the baby weighs or how healthy they are depending on what you eat as for the second No they will not it is impossible because those happened before the baby was born so it is in NO way possible for the baby to inherit these traits
Explanation:
i hope this helps
Answer:
Create offspring with a few different levels of food supply How does food supply affect the body type of offspring?
Explanation:
If the parent was eating scarcely the offspring might come out very skinny and not have enough nutrients. The offspring would come out less healthy than other offspring that would have good food supply and nutrients.
Which of the following are cortical lobes of the brain? (choose all that apply)
•frontal
•occipital
•perineal
•temporal
Answer:
frontal, occipital, and temporal
Explanation:
Answer:
•frontal
•occipital
•temporal
Explanation:
Give an example of how a population changed over time, or "evolved", by 3 natural selection. In your answer, use at LEAST three of the following words (you must use them correctly in order to get credit): variation, heritability, advantage, adaptation, traits, fitness, competition
Answer:
An example of a population changed over time, or "evolved", by three natural selection is described below in details.
Explanation:
Natural selection can produce microevolution, or a variation in allele recurrences over the extent, with fitness-enhancing alleles growing more prevalent in the population over generations. ... It applies to how common offspring bodies of an appropriate genotype or phenotype bequest in the succeeding generation, related to others in the association.
Answer:
it become closer to the background
Which of the following characteristics of Figure 1 best shows that the fragment is RNA and
not DNA?
Answer:
I cant see the figure but here are the differences in structure:
- RNA has 1 strand and DNA has 2 strands
-RNA has uracil instead of thymine
-RNA has a single nucleobase
-RNA has ribose (which has an OH instead of an H)
Explanation:
which one helps inprove air quality
the second option since a carpool would decrease the number of cars, and the amount of pollutants produced by cars imagine if 5 people went in the same car compared to 5 people going in 5 different cars
Both anaerobic and aerobic respiration use
to produce ATP and NADH. In anaerobic respiration, NADH is regenerated to NAD+ by
, while in aerobic respiration, electrons from NADH are deposited in the
to regenerate NAD+. Anaerobic respiration produces
ATP per molecule of glucose compared to aerobic respiration.
Answer:
1. glycolysis
2. fermentation pathways
3. electron transport chain
4. less ATP
Explanation:
Cells employ two distinct metabolic processes, anaerobic and aerobic respiration, to generate energy in the form of ATP and NADH. While in aerobic respiration, electrons from NADH are deposited in the electron transport chain to renew NAD+, in anaerobic respiration, NADH is converted to NAD+ via fermentation.
What is the scenario with the fermentation ?The process of fermentation, which is anaerobic (does not require oxygen), is utilised to produce NAD+ from NADH. In this metabolic process, the pyruvate that results from glycolysis is converted into other molecules like ethanol or lactic acid.
So that glycolysis may proceed, NADH is reverted to NAD+ as part of the process. Per molecule of glucose fermented, two ATP molecules are created as the final result.
As opposed to this, aerobic respiration is an oxygen-dependent procedure that yields a lot more ATP than fermentation does. This is so that aerobic respiration, which creates a proton gradient across the inner mitochondrial membrane by transferring electrons from NADH to oxygen through the electron transport chain, can take place.
The ATP synthase enzyme, which generates ATP from ADP and inorganic phosphate, is propelled by this proton gradient. So that glycolysis may proceed, NADH is converted during the process into NAD+.
Per glucose molecule, aerobic respiration results in the production of 38 ATP molecules. Anaerobic respiration generates two ATP molecules for every glucose molecule, but aerobic respiration generates 38 ATP molecules for every glucose molecule.
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What two scientific theories support the Big Bang?
Answer:
Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Explanation:
hope this helps :)
Two major scientific discoveries provide strong support for the Big Bang theory:
• Hubble’s discovery in the 1920s of a relationship between a galaxy’s distance from Earth and its speed
• the discovery in the 1960s of cosmic microwave background radiation.
1. Hubble’s discoveryin 1924 astronomer Edwin Hubble used a technique pioneered by Henrietta Leavitt to measure distances to remote objects in the sky.Hubble used spectroscopic red-shift data to measure the speeds these objects were travelling then graphed their distance from Earth against their speed.He discovered that the speed at which astronomical objects move apart is proportional to their distance from each other2. discovery in the 1960s of cosmic microwave background radiationOn May 20, 1964, American radio astronomers Robert Wilson and Arno Penzias discovered the cosmic microwave background radiation (CMB)It states that the ancient light that began saturating the universe 380,000 years after its creation.It also supports the big bang theoryThus, Two major scientific discoveries provide strong support for the Big Bang theory:
• Hubble’s discovery in the 1920s of a relationship between a galaxy’s distance from Earth and its speed
• the discovery in the 1960s of cosmic microwave background radiation.
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Which force primarily acts on a natural or artificial satellite to keep it in orbit around a planet
Magnetism
Centripetal force
Gravity
Nuclear force
Answer:
Gravity
Explanation:
When its altitude is matched by the pull of the Earth's gravity, a satellite circles Earth. The satellite will fly off into orbit in a straight line or crash down to Earth without this equilibrium.
By juggling two things, a satellite retains its orbit: its velocity (the speed it takes to travel along a straight line) and the gravitational force on it that the Planet provides. To resist the greater gravitational force, a spacecraft orbiting closer to the Earth needs more velocity.
Answer:
Gravity
Explanation:
On edge
help me with this. I'm so confuse
Answer:
fellow acellus user! It's C.
Explanation:
basically on a p. square, the genotype would be heterozygous (T,t)- therefore the dominant allele would be expressed, that being (T).
how does energy flow in this terrarium in terms of photosynthesis? I WILL MARK BRAINLIEST
The energy flows from the plant to the snail. The snail eats the plaint as well as consume oxygen from it too. From there the snail produces body heat and even carbon dioxide. Then the process repeats. Photosynthesis in the plant requires water, sunlight, and carbon dioxide; the snail eats the plant/ intakes oxygen etc. Hope that helps. :)
if you need clarification please comment I'll help you out.
What statement is true about X chromosomes?
A: Only men have them
B: Women have two of them
C: Half of the babies born do not have them
D: Only women have them
Answer:
b
Explanation:
men and women have x chromosomes but women have 2
PLEASE answer the two questions Thank you!
So for the first question it is the middle answer
The second answer is the last one,Let me explain so Use and discuss for the first one the bird is using the crab with a large claw to survive,The boy was helped I hope this helps
What is the cervical groove?
Answer:
semiricular notch that dives the head of the crayfish from the abdomen
4. Thinning ozone levels may cause:
A. Acceleration of photosynthesis in plants
B. Increased exposure to ultraviolet radiation on Earth
O C. Alien domination
O D. Disruption of radio signals from Mars
Answer:
B
Explanation:
humans will be overly exposed to strong UV light. UV light causes skin cancer, cataracts, sunburns, weakening of the immune system and quick aging.
PLEASE HELP WILL MARK BRAINLIEST AND 5 STARS, THANK YOU!!!
Answer:
I cant really see it the words are blurry
Scientists used a system of classification to help understand the relationships between organisms.
Please select the best answer from the choices provided
T
F
Answer: True
Explanation: I took the test :)
Hypoxic environments have very little oxygen in them. In the most extreme cases,
they may have no oxygen at all. What process must cells in these environments use to
get the energy needed for life processes out of the food molecules they take in?
A photosynthesis C. anaerobic respiration
B. aerobic respiration D. Osmosis
Answer:
The process cells must use in hypoxic environments to obtain energy from the food molecules they take in is anaerobic respiration (option C).
Explanation:
Anaerobic respiration is the process of energy production that cells carry out in the absence of oxygen. This type of reaction requires an electron acceptor other than oxygen.
Some microorganisms, such as bacteria, can carry out their metabolism in environments with little or no oxygen. In these organisms, the energy-producing pathways are anaerobic respiration and fermentation reactions.
The other options are not correct because:
A. Photosynthesis: occurs in plants, and is based on the conversion of solar energy into chemical energy.
B. Aerobic respiration: requires the presence of oxygen, the final electron acceptor of the electron transport chain.
D. Osmosis: is a transmembrane transport mechanism.
How are land breezes and sea breezes different?
Answer:
Land breezes come from land while sea breezes come from the ocean or other large bodies of water. The key difference is due to the property of water to retain heat and warm up longer as compared to land. Land breezes are also known as off-shore winds while sea breezes are also called on-shore winds.
Explanation:
Land breeze blows during the night from land to sea and the land becomes cooler faster than the sea. The air above the sea becomes less dense (i.e. warmer) and rises. The cooler air from the land moves in to take its place. Sea breeze: Sea breeze blows during the day and the land heats up faster than the sea.
Plants and animals have different cell structures. Which two organelles are only found in plant cells, but not in animal cells?
A. vacuoles and mitochondria
B. cell wall and mitochondria
C. chloroplasts and vacuoles
D. chloroplasts and cell wall
Answer:
D
Explanation:
Cells cells they are made of-
Which type of dating uses radioactive isotopes to give us the age of a
fossil?
Answer:
Radiometric dating
Explanation:
Answer:
radiometric dating
Explanation:
Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to determine their age. This method is known as radiometric dating.
Which of the following best describes bases?
A They feel slippery and taste sour.
B They turn red litmus paper blue and react with metals.
C They taste bitter and react with carbonates.
D They turn red litmus paper blue and taste bitter
Answer:
They turn moist red litmus paper blue and they react with metals.
They turn moist red litmus paper blue because they have a pH range of 8-14, hence they are indicated by a blue colour of the litmus.
They react with metals because they are reactive, the reaction forms a metal salt and water.
During the 1900s, the following genetic discoveries were made:
DNA is the molecule responsible for inheritance.
There are four bases in DNA, and they combine in a specific way. Adenine pairs with thymine, and guanine pairs with cytosine.
DNA is a double helix. The sugar molecules form the backbone, and the bases are connected by hydrogen bonds in the middle.
Enzymes that can cut and copy sections of DNA are identified and isolated.
Answer:
There are four bases in DNA, and they combine in a specific way. Adenine pairs with thymine, and guanine pairs with cytosine.
Explanation:
What phase does not occur between meiosis I and meiosis II, which results in haploid daughter cells?
Answer:
A. Interphase
Explanation:
Interphase happens to the cell before meosis 1.
Answer:
Meiosis II may begin with interkinesis or interphase II. This differs from interphase I in that no S phase occurs, as the DNA has already been replicated. Thus only a G phase occurs. Meiosis II is known as equational division, as the cells begin as haploid cells and end as haploid cells.
hope this helps!! :)
Explanation:
Which of the following is not a symptom of desertification?
A) decrease in salt content of the soil
B) lowering of the water table
C) reduced surface water
D) increased soil erosion
E) loss of native vegetation
Answer:
A
Explanation:
Effects of salts on plants As soils become more saline, plants become unable to
Carmen, forgetting that she had her watch on, asked
her friend what time it was. When her friend pointed
out that she was wearing a watch, Carmen became
aware of the pressure of the watch band on her
wrist. This is an example of.
A) perceptual constancy
B) difference threshold
C)sensory adaptation
D)perceptual set
The answer is perceptual set because it means to focus on some sensory aspects and ignore others
