Answer: b
Explanation:
In pea plants, height is determined by an allele for tallness (T) that is dominant over an allele for shortness (t). What is the probability that a gamete, selected at random, would carry the short allele (t) in a cross of heterozygous tall pea plants?
A. 1/8
B. 1/4
C. 1/2
D. 3/4
Answer:
C. 1/2
Explanation:
I took the test and got it right.
Which of the following flows through ecosystems in one direction?
A.water
B.energy
C.carbon
D.nitrogen
Answer:
B energy
Explanation:
because I just know D.
The energy flows through ecosystems in one direction. so the correct option is B. Firstly the energy flows from the sun to autotrophs, or producers. Then it further flows from producers to consumers. Energy never flows backward from consumers to producers.
What is ecosystem?An ecosystem is refers to as a geographic area in which plants, animals, and other organisms, as well as weather and landscapes, work closely to form a bubble of life.
On average only about 10% of energy stored as biomass in a trophic level and is passed from one level to the next. This is called as the 10 percent rule and it limits the number of trophic levels an ecosystem can support.
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How does working alone versus working in a group relate to growth and development, a characteristic of living things
What must be true about the number of chromosomes in each sex cell (when compared to the number of chromosomes in body cells
Answer:
The number of chromosomes in sex cell must be haploid (1n) as compared to body cell which is diploid(2n).
Explanation:
Body cells are diploid while the sex cells are haploid. We can say that sex cells contain half number of chromosomes as compared to body cells.
The number of chromosomes in each s-ex cell is half the number chromosomes in body cells.
Chromosomes:Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our ‘haploid’ number 23. Of the 23 pairs, 22 are known as autosomes. The 23rd pair is made up of the s-ex- chromosomes, called the ‘X’ and ‘Y’ chromosome. These 46 chromosomes carry the g-enetic information that’s passed from parent to child through heredity.
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what is the job for tRNA ?
a. to transport amino acids to the ribosome for protein synthesis
b. to act as a template for the coding strand of DNA
c. to serve as a temporary copy of the coding strand of DNA
d. to provide the energy needed to power protein synthesis
Answer:
A
Explanation:
The job of Transfer RNA is to provide amino acids to ribosomes in order to produce proteins for the cell.
2. The majority of foodborne illnesses are a result of improper handling of foods by
A. Consumers
B. Restaurants
C. Grocery stores
D. Farmers
On Saturday mornings, farmers from across the county set up stalls on town squares to sell produce they have grown and picked
themselves. This is an example of which of the following?
fair trade
futures
outsourcing
direct marketing
African elephants once existed in large populations across the African continent. Elephants use their tusks to dig for water and food. Humans hunt and kill elephants for their tusks. Habitat loss and fragmentation have also reduced the total number of elephants and the size of elephant herds. Scientists estimate that the number of African elephants has decreased from several million to several hundred thousand. Population sizes range from over 100,000 individuals in Botswana to approximately 100 individuals in northern Cameroon. Scientists have also found that the frequency of elephants that never develop tusks is increasing.
Select all the statements that describe probable effects of poaching and habitat fragmentation on clephant evolution
a. The elephant population in Botswana will experience high levels of genetic drift.
b. The poaching of elephants for their tusks is leading to the evolution of tuskless elephants.
c. Having tusks does not provide a selective advantage to African elephants.
d. Habitat fragmentation leads to decreases in population size and increases in genetic drift.
e. The elephant population in Cameroon will experience high levels of genetic drift.
Answer:
Option D
Explanation:
In habitat fragmentation, a large ecosystem or habitat of any species is converted into small ecosystems in such a way that each small ecosystem remains isolated from each other. Being isolated , random genetic drift comes in picture and reduces the gene flow with in the isolated habitats.
Hence, option D is correct
5. Two parents, one with type B blood and one with type A blood, have a child with type O blood. Which statement explains how this can occur?
Answer: Two parents, one with type B blood and one with type A blood.
Explanation: They both have different blood types, so that leads to the child having an O blood type.
Hope this helps!!
Sorry if it's wrong!!
Have a great day!!
If the two parents have blood group A and blood group B with their child of type O blood. Then, the possible genotypes of the parents is AO and BO. Thus, the correct option is A.
What is Blood group?A blood type is the classification of blood. Classification of blood group is based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells. These antigens are biomolecules which may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
There are four main blood groups which are A, B, AB and O. Blood group is determined by the genes a person inherit from the parents. In a cross between one parent with blood type A and one with blood type B having child with blood type O has genotypes AO and BO. The genotype is shown in the punnett square.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Two parents, one with type B blood and one with type A blood, have a child with type O blood. Which statement explains how this can occur?
A. AO and BO
B. OO and AB
C. Aa and BO
D. AO and Bb
E. Aa and Bb
what do we call any change in the genetic code ?
a. Mutation
b. replication
c. transcription
d. translation
Answer:
mutation
Explanation:
hope this helps!
A dichotomous key is used to identify a plant. 1a. Leaves are spiny ......................Pinus taeda 1b. Leaves are broad..................... Go to 2 2a. Single leaf..........................Go to 3 2b. Many leaves....................... Go to 4 3a. Leaf edge is smooth..............Cornus florida 3b. Lead edge is rough...............Ulmus americana 4a. Leaflet edges are smooth........Albizia julibrissin 4b. Leaflet edges are rough.........Juglans nigra A plant has many broad leaves with rough edges. What type of plant is this
A plant has many broad leaves with rough edges., type of plant is - Juglans nigra
Dichotomous keysa useful tool to identify organisms according to their morphological traits.The following key provides morphological traits to identify A plant has many broad leaves with rough edges.1.
A. Leaves are spiny ...................... Pinus taedaB. Leaves are broad..................... Go to 21b. match with broad leaves
2.
a. Single leaf.......................... Go to 3 b. Many leaves....................... Go to 42b. Match with many leaves
3.
a. Leaf edge is smooth.............. Cornus florida b. Lead edge is rough............... Ulmus americana4.
a. Leaflet edges are smooth........Albizia julibrissinb. Leaflet edges are rough.........Juglans nigraLearn more about an example of the dichotomous key
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Identify structures found in fungi. Check all that
apply.?
O produce spores
O contain pseudopods
O contain hyphae
O contain a fruiting body.
The answer is 1, 3, and 4
The correct answers are A. produces spores, C. contain hyphae, and D. contain a fruiting body. (:
Explanation:
A produces spores
C contains hyphae
D contains a fruiting body
3 examples of producers and 3 examples of consumers
Explanation:
whales, elephants, cows, they are consumers
tree,grass,algae are producers
8. Plant cells have some parts that animal cells do not have. Plant cells have __________, __________, __________.
9. Most of the organelles in plant and animal cells are inside the __________
10. _________ cells have a “box” shape,
11. __________ cells are more round
12. The ____________ in plant cells provide an additional layer outside the cell membrane for support the plant.
13. The cell wall separates the inside of the _________ cell from the environment.
14. __________ in plant cells are responsible for performing the process of photosynthesis. If they stop working, photosynthesis will not be taking place in the plant.
15. Plant cells have a ________________ that stores water, nutrients, food and waste products.
16. The________________ are the organelles that makes proteins.
17. Cells move water and materials through the _____________.
Answer:
8. Plant cells have some parts that animal cells do not have. Plant cells have ___cell wall_______, __chloroplast________, ___large vacuole_______.
9. Most of the organelles in plant and animal cells are inside the __cytoplasm________
10. __Plant_______ cells have a “box” shape,
11. ___animal_______ cells are more round
12. The ___cell wall_________ in plant cells provide an additional layer outside the cell membrane for support the plant.
13. The cell wall separates the inside of the __plant_______ cell from the environment.
14. __chloroplast________ in plant cells are responsible for performing the process of photosynthesis. If they stop working, photosynthesis will not be taking place in the plant.
15. Plant cells have a ____vacuole____________ that stores water, nutrients, food and waste products.
16. The_ ___ribosomes____________ are the organelles that makes proteins.
17. Cells move water and materials through the __process of Diffusion___________.
Help
Explain how cellular respiration and photosynthesis make a system together.
Answer:
cellular respiration in photosynthesis are biological processes in which matter and energy flow through the biosphere. These two processes are responsible for the exchange of oxygen and carbon dioxide between living organisms and the environment. Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a byproduct. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
3. Earthquakes are most likely to occur near?
O Fault
O Ocean
O Mountain
O Tsunami
Answer:
Earthquakes are most likely to occur near oceans because of the ocean plates sliding against one another
Explanation:
BRAINLIEST PLEASEDarwin noticed that animals on the different islands of the Galapagos appeared to be adapted
to what? *
(10 Points)
O A. differences in their food
O B. differences in their predators
O C. differences in their altitude
D. differences in temperature
WILL GIVE BRAINLIST
In biology, light- dependent reactions happen in the _ ? which are stacks of thylakoids.
Answer: Grana
Explanation:
True or False In some plants the Male and female reproductive organs are on different plants
Answer: True
Explanation: Good luck! :D
Almost immediately after injection, you find yourself swept into a good-sized chamber, the _(1)_. However, you do not stop in this chamber, but continue to plunge downward into a larger chamber below. You land with a large splash and examine your surroundings. All about you are huge white cords, hanging limply from two flaps of endothelial tissue far above you. You report that you are sitting in the _(2)_ chamber of the heart, seeing the flaps of the _(3)_ valve above you. The valve is open and its anchoring cords, the _(4)_, are lax. Since this valve is open, you conclude that the heart is in the _(5)_ phase of the cardiac cycle.
Answer:
Almost immediately after injection, you find yourself swept into a good-sized chamber, the left atrium. However, you do not stop in this chamber, but continue to plunge downward into a larger chamber below. You land with a large splash and examine your surroundings. All about you are huge white cords, hanging limply from two flaps of endothelial tissue far above you. You report that you are sitting in the left ventricle chamber of the heart, seeing the flaps of the mitral valve above you. The valve is open and its anchoring cords, the chordae tendineae, are lax. Since this valve is open, you conclude that the heart is in the systole/contraction phase of the cardiac cycle.
Explanation:
Once the oxygenated blood enters the heart through the pulmonary vein, it goes to the left atrium. From there, it goes down to the left ventricle passing through the mitral valve, also known as the bicuspid valve. This valve prevents blood's backflow when the heart contracts, allowing the blood's flow from the ventricle to the aorta.
The chordae tendineae, also known as tendinous cords, are in the mitral and the tricuspid valve. They are cords that are attached to the valve and the heart walls. They are lax during atrial systole, and with the help of blood pressure, they allow the valve to open and welcome the blood into the left ventricle. The tendinous cords are tense during ventricle systole preventing the valve from opening and causing a backflow from the ventricle to the atrium.
what kind of back legs did basilosaurus have
Answer:
they have 4 swimmy legs tehe
This is the part of a flower that helps attract animals in order to aid in pollination.
It also starts with pe
Answer:
Petals?
Explanation:
:)
biologists knew that South America and Africa contained similar fossils. These fossils led them to believe that a temporary land bridge between South America and Africa allowed ancient species move between both continents. In the twentieth century, evidence showed that South America and Africa were once part of the same larger continent and that there were no land bridges between them How should ologists respond to the new geological finding? 0 Biologists should reject the geological finding, because it is new. Biologists should ask physicists what to do, because physics is a more exact science Biologists should reject the belief in ancient species, because there were no land bridges. Biologists should update the history of life, because it should include the new geological finding Next 3:12 PM 2/10/2021 2 ^ Previous o B Type here to search
Answer:
D. Biologists should update the history of life, because it should include the new geological finding.
Explanation:
It's definitely correct
2. Messages move to and from the brain along thin cells called?
Answer:
Messages to and from the brain travel along the nerves, which are strings of long, thin cells called neurons.
Explanation:
Answer: Messages to and from the brain travel along the nerves, which are strings of long, thin cells called neurons (see Figure 6.2). Chemical- electrical signals travel down the neurons much as flame travels along a firecracker fuse. ... Dendrites receive impulses, or messages, from other neurons and send them to the cell body.
Which of the following kinds of organisms do photosynthesis? Select all that apply.
Iplants fungi Danimals algae all bacteria some bacteria
the anatomical term for eye is
Answer:
Oculus
Explanation:
The organ of vision that consists of the eyeball and the optic nerve. Synonym(s): oculus [TA] .
Answer:
Medical Terminology Ophthalm/o = Eye Ophthalm/o = Eye Ophthalm/o = Eye Opt/o = Vision.
Light passes through the front of the eye (cornea) to the lens. The cornea and the lens help to focus the light rays onto the back of the eye (retina). The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve and then to the brain.
Explanation:
Sorry if it's wrong
I hope this helps
PLEASE HELP! THIS IS VERY IMPORTANT!
suppose you had 4.0 moles of solute dissolved into 2.0 liters of solution. what is the molarity
Answer:
M
=
2.0
m
o
l
L
−
1
Explanation:
The molarity,
M
of this solution can be calculated by a formula which is;
M
=
n
V
where;
M
= Molarity of solution
n
=Number of moles of solute
V
= Volume of solution in Litre
Given,
n
=
4.0
moles and
V
=
2.0
L, so we have enough information to calculate the molarity of the solution;
M
=
n
V
M
=
4.0
2.0
m
o
l
L
−
1
M
=
2.0
m
o
l
L
−
1
or
M
=
2.0
m
o
l
d
m
−
3
if the questions mention volume of solution in
d
m
3
because
L
=
d
m
3
Which of these landforms is created due to deposition?
Cirque
Fjord
Horn
Sandbars
Answer:
The landforms created from deposition is Cirque
Answer:
i think it cirque only
One of the advantages of scientific theories is that they have predictive power.
True or false?
Answer:
"The main benefit of the scientific method is that it has predictive power—a proven theory can be applied to a wide range of phenomena. Of course, even the most tested theory may be, at some point, proven wrong because new observations may be recorded or experiments done that contradict it."
Explanation:
link: https://bscdesigner.com/all-about-the-scientific-method.htm#:~:text=The%20main%20benefit%20of%20the,experiments%20done%20that%20contradict%20it.