Answer:.
Explanation:
Which statement accurately describes radioactive dating?
Explanation:
Radioactive dating works on the principle that a radioactive isotope can decay into the stable daughter nuclei at a constant rate. Geologist generally use the principle for half life. Half life is the time required for half of the radioactive substance to decay. This is constant for a particular element.
Assuming these are carbon dioxide molecules, which way do you think the molecules will move and why?
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
B. Into the cell. They want to move from low to high concentration (UP the concentration gradient).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata (Figure 3b).
Answer:
A. Out of the cell. They want to move from high to low concentration (DOWN the concentration gradient)
Explanation:
The option (A) is the correct answer. This statement is the required answer.
5. As blood enters the capillaries, molecules of oxygen move from the blood into the tissues of the body. Which of the following explains this movement?
d. The concentration of oxygen in the blood is the same as the concentration of carbon dioxide in the tissues.
e. The concentration of oxygen in the blood is higher than that in the tissues f. The concentration of oxygen in the blood is lower than that in the tissues 1
g. The concentration of oxygen in the blood is the same as that in the tissues.
Answer:
The answer is e
Explanation:
Oxygen moves due to diffusion, and the diffusion of oxygen occurs from higher concentration to lower concentration that is from the blood into the tissues
PLEASE HELP ME WITH THIS BIO QUESTION!
Answer:
Option 1: XnY
Explanation:
X-linked recessive traits can occur in both males and females. Since its recessive it needs both XnXn in females to show up but for males who are hemizygous (XY) they only need a defective copy of Xn for the disease to show up thus option 1 is correct.
I have added a helpful illustration below where we are talking about another x-linked recessive condition in humans: hemophilia.
Answer:
X"n"YPlease leave a Thanks and 5-star rating!
THIS IS URGENT!! I'M CURRENTLY IN THE HOSPITAL AND I AM UNABLE TO DO MY HW, IF SOMEONE COULD PLS DO IT I WILL BE SO GRATEFUL
Answer:
I don't know your reasons on how you would feel about becoming an astrobiologist but this is what I found and my feelings.
Explanation:
The Perseverance twin is called Optimism. This has all of the same electronics as Perseverance and it’s important to have a twin so that they can test things before they operate Perseverance. When they do land on Mars they need the twin to test out all of the sequences and plan that they have for the rover before they send them up to Perseverance on the surface of Mars. Also, if they have a problem with Perseverance it gives them a place to practice how they recover from that problem.
Personally, for me, I would not like to become an astrobiologist. I like science but not that much. I like the simple questions of why and how does it work. I’m not entirely sure that we as humans are meant to be on any other planet except earth. Earth has been here for many many years and seems to reset itself. I don’t care why and will never know why in my lifetime. I’s just not something that I like to considerate doing as a career.
NASA is targeting no earlier than April 8 for the Ingenuity Mars Helicopter to make the first attempt at powered, controlled flight of an aircraft on another planet. Before the 4-pound (1.8-kilogram) rotorcraft can attempt its first flight, however, both it and its team must meet a series of daunting milestones.
Ingenuity remains attached to the belly of NASA’s Perseverance rover, which touched down on Mars Feb. 18. On March 21, the rover deployed the guitar case-shaped graphite composite debris shield that protected Ingenuity during landing. Ingenuity is battery powered and completely sef recharging from the solar panel on the top. The rover currently is in transit to the “airfield” where Ingenuity will attempt to fly. Once deployed, Ingenuity will have 30 Martian days, or sols, (31 Earth days) to conduct its test flight campaign. All data and pictures will be transmitted to Perseverance and then uploaded for all to see.
Please help it’s biology!!!!!!
Answer:
25%
Explanation:
If a parent is heterozygous, it has 2 difterent alleles. Both parents are heterozygous for blood type A, so the genotype is AO. A masks the O because A is dominant over O, so A is the blood type.
Create a punnett square to find possible offspring
AA = Blood type A
AO = Blood type A
OO = Blood type O
There is 1 child out of 4 that have blood type O. So to find the percentage divide 1 and 4 and multiply by 100.
1÷4×100 = 25
Help! Will give brainliest to the best answer.
Using a specific example, predict and explain how the release of non-native organisms can affect local, national, and even global ecosystems.
Which type of evidence provides the best support for the hypothesis that the ancestors of tetrapods evolved legs before tetrapods were first seen on land?
Answer:
" Fossil record" is the right answer.
Explanation:
Prior knowledge, comprising fossils, rests as well as impressions of species perfectly deposited throughout sedimentary rock throughout early archaeological eras.These are established upon this superpose law which always claims that perhaps the lower layers typically younger than the whole upper ones in uninterrupted factors leading.Select the correct graph.
The graphs below show the average monthly rainfall in three ecosystems over three consecutive years. Which ecosystem is likely to be the least stable?
Answer:
the bottom one, the one with the bars far away from each other.
Explanation:
Answer:
It is the second choice at the top
Explanation:
I just did this
How do you think the high rates of HIV transmission in humans might be related to the length of time it takes for the virus to develop into AIDS?
6 reasons why Meiosis and mitosis are different (PLEASE HELP)
Answer:
Reasons why they're different :
Explanation:
1. Mitosis is reserved for somatic cells while meiosis is reserved for sex cells (gametes).
2. Mitosis results in identical cells , while meiosis results in genetically distinct cells.
3. Mitosis undergoes one round of cell division while meiosis undergoes two rounds of divison.
4. Mitosis results in diploid daughter cells, while meiosis results in haploid daughter cells.
5. Unlike mitosis, meiosis differs in males and females.
6. Mitosis creates a human cell with 46 chromosomes, while meiosis creates a human cell with 23 chromosomes.
what is the last process of the cell cycle during which two new daughter cells formed?
A. cytokinesis
B. S phase
C. G2 phase
A scientific name contains information about which of the following groups?
1Points
A
family and species
B
genus and species
C
phylum and order
D
class and family
Answer:
B
genus and species
Explanation:
what are the genotypes for the offspring in the F1- Generation? PLEASE HELP!!
Answer:
Explanation:
The genotypes in the offspring of the p-generation, i.e. F1, are
Hh (hetero-zygous) short hair
hh (homo-zygous) long hair
each with 50%
However, when Hh crosses with hh, the proportion of the F1 should be 50% each of long and short hair. The diagram shown does not seem to be consistent with realigy.
Which technological tool helps earth scientists gain new knowledge about earth’s subsurface?
Group of answer choices.
A. Global positioning system
B. Digital balance
C. Ground penetrating radar
G. Hydrometer
Answer:
ground penetrating radar
Ground penetrating radar technological tool helps earth scientists gain new knowledge about earth’s subsurface. Thus the correct option is C.
What is Ground penetrating radar?Ground penetrating radar detects non-metal and metal objects, as well as voids and underground irregularities. It makes possible to measure the depth, dimensions, thickness of targets. It provides data quickly and can cover a large site area.
Ground penetrating radar can go deep up to 100 feet (30 meters) in low conductivity materials such as dry sand or granite. Moist shale, clays, and other high conductivity materials, may attenuate or absorb GPR signals, greatly decreasing the depth of penetration to 3 feet (1 meter) or less.
For more information regarding ground penetrating radar, visit:
https://brainly.com/question/6069534
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A signal that bladder is full is sent to the central nervous system( brain and spinal cord) by
Answer:
When the bladder becomes full, the stretch receptors of the detrusor muscle send a signal to the pons, which in turn notifies the brain. People perceive this signal (bladder fullness) as a sudden desire to urinate, or urinary urge
hope this helps
have a good day :)
Explanation:
(8 - 2) 3 – 2 ( 5 + 4) + 3 ( 6 – 1)=
Answer:735
Explanation: the reason why this is the answer because of PEMDAS….. you solve the the numbers in the parentheses first before hand then you continue such as, (6x3-2x9+3(5) which is 6x3=18 - 2 = 16 x 9 = 144 x 5 = 735
Describe the differences between work and power
Explanation:
Work power
1).Work is a scalar quantity. 1).Power is a scalar quantity.
2).The SI unit of work is Joule (J). 2).The SI unit of power is Watt (W).
3).The equation to calculate work is
Work = Force × Displacement.
3).The equation to calculate power is
Power = Work/Time
What type of mutation occurs when a nucleotide is added to the DNA?
Answer:
A frameshift mutation.
Explanation:
A frameshift mutation is when one adds an extra nucleotide to a series of nucleotides. This will mess up the order of the nucleotide, thus when it forms the codons, and eventually, the amino acids; all of the codons are wrong, thus all of the amino acids are wrong.
In this situation, an extra nucleotide is added to a sequence of DNA, this results in all of the other nucleotides getting pushed over by (1). Thus, all of the nucleotides form the wrong codons and the wrong amino acids. Therefore, a frameshift mutation has occured.
Question is on the image
Answer:
A and D.
Explanation:
Sharks gills are located on the side of their bodies while on the other hand, Skates have gills that are located in underneath of their mouth. In sharks , large spiracles are present on the ventral sides of shark's head whereas in Rays or Skates, spiracles are large in size and located on the dorsal side of their head. Spiracles is an external respiratory opening, located behind the eye of a cartilaginous fish.
PLS HELP
Plant cells have cell walls, while animal cells only have cell membranes surrounding them. Which of the following best describes how the cell wall is different from the cell membrane
1. cell walls tend to be more rigid than the cell membrane
2. cell walls tend to be smaller than the cell membrane
3. cell walls tend to contain more lipids than the cell membrane
4. cell walls tend to contain less cellulose than the cell membrane
Answer:
1. cell walls tend to be more rigid than the cell membrane
Explanation:
Cell walls are called 'walls' for a reason (:
hi! i’ll give brainliest please help
Answer:
My Guess Is C if im wrong sorry
Explanation:
Just thinking logicaly
Osmosis is the movement of a liquid (usually water) through a semi-permeable membrane.
A. True
B. False
Osmosis is the movement of a liquid (usually water) through a semi-permeable membrane.
[tex]\sf\purple{A.\:True.}[/tex] ✅
In other words, it is the movement of water through a semipermeable membrane from a region of low concentration to a region of high concentration.[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
what processes turn atmospheres into clouds
what process turns clouds into the Earth's surface
what process turns oceans, lakes, and rivers into the atmosphere
what process turns the atmosphere into oceans, lakes, and rivers.
what process turns ice into oceans, lakes and rivers
what process turns ice into ocean lakes and rivers
I'm sorry it's a lot
Answer:
am sorry I don't know this
how many social connections should you have at least a day?100 POINTS
Answer:
Explanation:
You should have as many social connections a day as you feel comfortable. It can be as little as one a day or you can be on social 24 hours a day. There is no right or wrong answer here.
In ______ reproduction, genetically identical offspring are produced, while in ______ reproduction, offspring are genetically different from each other. Multiple choice question. asexual; sexual
Bromine is in group 7 of the periodic table. What is the charge?
Answer:
Bromine Charge
Explanation:
Charge- 1-, 1+, 5+
Hope it helps
Answer:
Explanation: The Group 7 elements are called the halogens. They are placed in the vertical column, second from the right, in the periodic table. Chlorine, bromine and iodine are the three common Group 7 elements.
Examine the chart shown below.
genotype phenotype
BB black fur
Bb
black fur
bb
brown fur
What does the phenotype represent?
OA.
the physical appearance or expression of an organism's alleles
B.
the combination of alleles that an organism possesses
O
C.
only the recessive form of a gene
OD
the crossing-over of genetic traits
Answer:
A
Explanation:
Your phenotype will be the outcome of your genotype which are your alleles
Hope this helps
Julio is studying the evolutionary history of desert cottontail rabbits, sea otters, and grizzly bears. All three species share some body structures, but all three also have some differences in their body structures. Below is a table that includes some of the body structures Julio is studying. How could Julio explain why all three species share some body structures and have some differences? Why do only grizzly bears and sea otters have canine teeth?
Answer:
Explanation:
One way that Julio can explain such differences is that their environments are very similar and therefore the traits that were best suited for their survival were passed on from generation to generation. The traits that each species developed differently would have been due to their diet. Each species has a different diet and certain traits allow them to more easily hunt/gather the food that they need to survive. For example, grizzly bears and sea otters both eat fish as their main diet and therefore have both developed canine teeth, while rabbit teeth are different due to them only eating vegetation.
What is the answer to this?
Plsss helpp