Sexual reproduction results in offspring that are *blank*
from both parents?
A. different
B. same
C. opposite
D. none of these
Answer:
I would put unique but since that's not a choice, probably different
Explanation:
Answer:
A. Different
Explanation:
In sexual reproduction, the offspring inherits traits from both parents. They are not an exact copy of either but have traits from both. Hope it helps :)
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Muscular Strength and Endurance: Mastery Test
4
Select the correct answer.
What must skeletal muscles do to move?
A.
engage their fibers slowly
В.
twitch involuntarily
Oc.
separate from the bone
O D.
contract and relax
Reset
Next
The amount of solar radiation received by the earth is greatest
at
a
The equator
b The mid-latitudes
С
The poles
d None of the above
11 Pause
Help
In the classification of organisms, which is the correct order of taxonomic groups from broadest to most specific?
A Order ----> Domain -> Genus
B. Class ---> Family -----> Order
Oc. Kingdom ----> Class -----> Phylum
D. Family ----> Genus ----> Species
Sion out
1:05
Answer:
I guess (D)
Explanation:
Linnaeus' hierarchical system of classification includes seven levels called taxa. They are, from largest to smallest, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Compare the reproduction in Hydra and Amoeba?
Answer:
Hydra:
Reproduction by budding in Hydra.
Amoeba:
Reproduction by binary fission in Amoeba.
Hydra:
Budding means sexual reproduction in which a new organism develops from a bud in the parent.
Amoeba:
Binary fission is the type of asexual reproduction in which the parent divides to give rise to two daughter organisms.
Hydra:
In budding process, bud is simply an outgrowth of cells at one particular site.
Amoeba:
The parent replicates its genetic material and divides it equally between the two daughters in binary fission.
Hydra:
The bud or the newly formed organism remains attached to its parent until maturation.
Amoeba:
Both the cytoplasm and the nucleus of the parent divides into two.
Name two types of lateral pathways for the movement of sucrose from source cell into the sieve tube
Answer:
Diffusion and active transport.
Explanation:
Diffusion and active transport are the two types of lateral pathways that is responsible for the movement of sucrose from source cell into the sieve tube. Sugar molecules are moved into the sieve elements which are the phloem cells through active transport i.e. with the use of energy. The water produces turgor pressure in the sieve elements, which pushes the sugars and fluids down the phloem tubes toward the storage sites. it also moved through simple diffusion due to difference in concentration i.e. from higher to lower concentration region.
Identify the true statements regarding liver glycogen phosphorylase a. Protein phosphatase 1 is abbreviated PP1. The binding of glucose to liver phosphorylase a shifts the equilibrium from the active form to the inactive form. Liver phosphorylase a concentration decreases when glucose enters the blood. As the concentration of phosphorylase a decreases, the activity of glycogen synthase increases. Liver phosphorylase a is regulated by AMP, adenosine monophosphate. When PP1 is bound to phosphorylase a, both PP1 and phosphorylase a are active.
Answer:
Liver phosphorylase a concentration decreases when glucose enters the blood.
The binding of glucose to liver phosphorylase a shifts the equilibrium from the active form
As the concentration of phosphorylase a decreases, the activity of glycogen synthase increases. to the inactive form
Explanation:
Protein phosphatase 1 (PP1) is a phosphatase enzyme known to remove phosphate groups from serine/threonine amino acid residues. PP1 plays diverse biological roles including, among others, cell progression, control of glucose metabolism, muscle contraction, etc. In glucose metabolism, PP1 regulates diverse glycogen metabolizing enzymes (e.g., glycogen synthase, glycogen phosphorylase, etc). In the liver, glycogen phosphorylase catalyzes the rate-limiting step in glycogenolysis by releasing glucose-1-phosphate. Glycogen phosphorylase a is converted (and inactivated) into the b form by PP1, which catalyzes the hydrolysis of the phosphate bond between serine and the phosphoryl group. In the liver, glucose binds in order to inhibit glycogen phosphorylase a, thereby inducing the dissociation and activation of PP1 from glycogen phosphorylase a.
1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
J. Mutation
K. Independent assortment
L. Mitosis
M. Fertilisation
2. Which statement best describes the process of endocytosis?
J. A vesicle within a cell fuses with the plasma membrane and releases its contents to the outside
K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
L. Investment in one cytosis reduces the ability of the parent to assist another cytosis
M. One region of an embryo directs the development of neighbouring region of an embryo through movement of cells
3. In eukaryotic cells the conversion of ADP and phosphate into ATP occurs (KA1)
J. only in the mitochondria, and requires energy.
K. only in the cytoplasm, and releases energy.
L. in both the mitochondria and the cytoplasm, and requires energy.
M. in both the mitochondria and the cytoplasm, and releases energy.
4. One consequence of having small regulated steps in an energy pathway is (KA1)
J. an increase in the activation energy for the pathway.
K. a decrease in the amount of heat lost from the pathway.
L. a decrease in the amount of ATP released from the pathway.
M. an increase in the total energy released from the pathway.
5. Adult stem cells in bone marrow can differentiate into a variety of cell types e.g brain, skin, lungs, heart, liver and muscle.
Stem cells that are transplanted from a healthy donor into a patient (recipient) will divide and differentiate into cells of like form and function to the surrounding cells.
The adult stem cells from the bone marrow of the donor would be genetically identical to the cells of the
J. recipient, and divide by mitosis.
K. donor, and divide by mitosis.
L. recipient, and divide by meiosis.
M. donor, and divide by meiosis.
Answer:
1. Mitosis
2. K. Solid particles or liquid are taken up by a cell through invagination of the plasma membrane
3. L. in both the mitochondria and the cytoplasm, and requires energy.
4. J. an increase in the activation energy for the pathway.
5. K. donor, and divide by mitosis.
Explanation:
The sources of genetic variation in a population with sexual reproduction are 1-mutation, which can be defined as genetic changes in the genome of an organism that create new alleles in the population, 2-independent assortment, where pairs of homologous chromosomes are randomly separated, during meiosis, 3-fertilization, where two gametes held together to form the zygote cell (thereby creating new genetic combinations), and 4-recombination or crossing over (i.e., the exchange of genetic material between non-sister chromatids during meiosis). Endocytosis is a cellular process by which substances enter into the cell by invagination of the cell membrane (this term is contrary to exocytosis). In eukaryotic cells, mitochondria are organelles whose membranes produce ATP from ADP and Pi by aerobic respiration (i.e., by the Krebs Cycle and electron transport chain), while glycolysis occurs in the cytoplasm. This process requires the addition of energy (chemical energy in the form of organic compounds). An energy pathway that has many small regulated steps is expected to produce intermediate products and increase its activation energy. Finally, stem cells that derive from a donor and are genetically identical it is expected that divide by mitosis.
Why is a sea otter a “keystone”??
Explanation:
Sea otters are an iconic species, representing the beauty and diversity of marine life found along California’s coastline. They’re also considered a keystone species because of their critical importance to the health and stability of the nearshore marine ecosystem. They eat sea urchins and other invertebrates that graze on giant kelp.
Help ASAP, please
Thank you, Friends:)
Which statement best describes a difference between a molecule of DNA and a molecule of RNA?
A)DNA contains genetic informationwhile RNA does not
B)RNA contains the letter in place of the letter T in DNA
C)DNA has 1 strand, while RNA has 2
D)RNA uses the letter C. while DNA does not
Answer: B
Explanation:
In general, do organisms that have more traits in common also share more genes?
Answer:
In general, organisms that share similar physical features and genomes tend to be more closely related than those that do not. Such features that overlap both morphologically (in form) and genetically are referred to as homologous structures; they stem from developmental similarities that are based on evolution.
Explanation:
hope it helps!
Explain the differences between Earth’s crust, mantle, outer core, and inner core.
Answer:
Earth's crust is the coldest Earth layer. Rock makes up the mantle and crust. The Outer core is liquid and the inner core is solid.
Explanation:
Outer and Inner core are both are made mostly of iron, with a little nickel and some other chemical elements.
as wind movsces over ocean water it produces both currents and _____________ that erode the coastline
Answer:
as wind movsces over ocean water it produces both currents and _____________ that erode the coastline
Explanation:
sorry
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
it's a because
When we burn oil, coal, and gas, we change the ocean's basic chemistry, making it more acidic. Our seas absorb as much as a quarter of all man-made carbon emissions. Since the start of the Industrial Revolution (and our coal-burning ways), the ocean has become 30 percent more
Answer:
A - Burning coal
Explanation: When you burn coal you create polution which contributes to global warming, and global warming warms up the earth.
# 14 please!!!! will give brainliest
Answer:
Within the bone marrow, all blood cells originate from a single type of unspecialized cell called a stem cell. When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell.
Explanation:
I am not sure if this helps you....
"What do the four genotypes inside the 4 boxes of a Punnett Square represent?
Answer:
They represent the percent chance to inherit a type of genotype. Recessive alleles, dominant alleles, heterozygous have chances to appear based off the parent alleles.
Which of these is a difference between DNA and RNA?
DNA is found in the nucleus; RNA is never found in the nucleus.
DNA consists of five different nucleotides; RNA consists of four different nucleotides.
RNA is double-stranded; DNA is single-stranded.
DNA contains thymine; RNA contains uracil.
In DNA, adenine pairs with guanine; in RNA, adenine pairs with thymine.
Like DNA, RNA is made up of nucleotides. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
in olden days,parents were regaeded as educators,and educators as parents.
Answer: That answer is completely FALSE
Explanation:
1. Which of the following events is not a source of genetic variation in eukaryotic organisms?
J. Mutation
K. Independent assortment
L. Mitosis
M. Fertilisation
Answer:
Mitosis
Explanation:
Mitosis is not a source of genetic mutation because it take place mostly in the somatic cells. This is because it does not lead to the production of gametes . In mitosis, the parent cells divide into two daughter cells and each daughter cells are genetically identical to the parent cell because they carry the same number of chromosomes as the parent cell. There is no genetic variation in this.
what are some similarities for prophase and telophase
Answer:
Both prophase and telophase have a complete set of chromosomes and organelles.
Explain the relationship between mutations, adaptations,
natural selection, and extinction.
Answer: A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
Explanation:
Answer:
A mutation results in different alleles for a gene and these different alleles will cause adaptations that may be favorable or unfavorable. If no species in an area has adaptations suited for the environment after it changes, extinction will occur.Adaptations result from random mutations in the genes of organisms. Depending on the environment, these adaptations may be favorable or unfavorable. If an adaptation is favorable, it is selected by nature and, over time, more and more organisms in a population will have it. If the environment changes so much that the adaptations of a species are no longer enough for the species to survive, extinction will occur.Mutations is very different because it results in different alleles for a gene.Adaptations is where an animals ADAPTS to an environment.Natural selection consists of overproduction,variation, favorable adaptations.extinction is when a species completely disintegrates.
Explanation: got it on ed :)
The brain send signals that control the speed at which food moves through the digestive system. What systems are involved?
A.Circulatory, Immune, digestive
B.Muscular, Digestive, Immune
C.Digestive, Muscular, Nervous
D.Respiratory, Endocrine, Digestive
what is cell and its function
Cells are the basic building blocks of all living things.
They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
[tex]\sf\huge\underline\purple{Cell:-}[/tex]
Definition:-
“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”[tex]\rightarrow[/tex] Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.
[tex]\rightarrow[/tex]Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids.
[tex]\sf\large\underline\purple{Functions:-}[/tex]
Following are the various essential functions of cells:
Cells provide structure and support to the body of an organism.The cell interior is organised into different individual organelles surrounded by a separate membrane.The nucleus (major organelle) holds genetic information necessary for reproduction and cell growth.Every cell has one nucleus and membrane-bound organelles in the cytoplasm.Mitochondria, a double membrane-bound organelle is mainly responsible for the energy transactions vital for the survival of the cell.Lysosomes digest unwanted materials in the cell.______________________________
Many scientists say that there is a good reason for gaps in the fossil record. Can you explain why some extinct animals and plants were never fossilized?
Answer:
For an organism to become a fossil, it must not decompose or be eaten. This can happen if the organism either lives within or is moved to a place where it can be buried and kept from decaying. When an organism is buried quickly, there is less decay and the better the chance for it to be preserved.
Explanation:
I copied and pasted from https://www.americangeosciences.org/education/k5geosource/activities/investigations/fossils/how-fossils-form ,it might help for your work.
How is the instructions for your traits carried on a DNA molecule?
Sequence of the nitrogen bases
In the bond between the phosphate and the sugar
O In the Deoxyribose Sugar
O In the phosphate group
Sequence of the nitrogen bases