Question 3 of 20 -
0000 UNIT SCI07 408 SLPS2021
Question: 1-3
A biologist describes two modern-day species as "sharing a common ancestor." What does it mean when two species share a common ancestor?
Both species evolved from one species that lived in the past
One of the species evolved into the other species
The two species are actually the same species with genetic variation
The two species reproduced with one another and formed a common ancestor
Answer: C. is your answer
Explanation: It means the species shared a common ancestor in the recent past.
Period of a wave refers to...
Answer:
The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle. The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.
Explanation:
it's C
What is the complimentary DNA strand to this template?
ACTCAAGAC
Answer:
The answer would be c
Explanation:
ACTCAAGAC
TGAGTTCAG
they compliment one another
Answer: c. TGAGTTCTG
Explanation: Adenine only bonds with thymine and cytosine only bonds with guanine
Identify one environmental factor that could cause a base sequence in
DNA to be changed to a different base sequence.
Explanation:
Environmental exposure to certain chemicals, ultraviolet radiation, or other external factors.
PLEASE HELPPP!!! I'll give brainliest!
Two atoms have the same number of protons but different numbers of neutrons. These atoms are:
A. electrons
B. isotopes
C. molecules
D. radiation
tysm!
Answer:
isotopes
Explanation:
If two atoms have different numbers of protons, they are different elements. However, if two atoms have the same number of protons, but different numbers of neutrons we refer to them as isotopes. Two terms we use to identify nuclides (isotopes) are atomic number and mass number.
write the general characteristics of bryophytes? 5mark
Answer:
Plants occur in dump and shaded areas
They lack vegetative structure
The plant body is prostrate or erect
They lack vascular system
What can you tell about the sex of this person where the chromosomes came from?
Answer:
Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome. This arrangement means that it is the male that determines the sex of the offspring when fertilization occurs.
Explanation:
I am a single-celled, prokaryotic organism that lives in the large intestines of mammals. I reproduce asexually by binary fission and can reproduce very quickly.
Answer: Kingdom:Eubacteria
organism name: kelp
Explanation: its kelp in the kingdom classification bacteria
Answer:
Escherichia coli.
Explanation:
Escherichia coli (E. coli) is a gram negative, rod shaped and facultative anaerobic bacterium that lives in large intestines of mammals. It is unicellular or single celled and prokaryotic organism. It reproduces asexually by binary fission.
It does not have nuclues or membrane bound organelbecause it is prokaryotic.
Therefore,
Escherichia coli lives inside large intestines of mammals.
A DNA strand has the following bases: AGACCATA. What are the bases on its complementary strand?
Answer:
1 AAGCCA
2 ACCGAA
3 TTCGGT
4 CCATTC
How does flooding affect the soil layer of the
ecosystem?
Answer:
Changes from flooded to drained conditions in soils stimulate changes from aquatic to terrestrial vegetation and decrease the algal contribution to total primary production. Drainage of organic soils then has the effect of removing a source of net primary production (algae) and carbon sequestration
Explanation:
Use different words then I did
Answer:
Soil will become damp and will thrive in water
please help i’ll give brainliest
Answer:
its the second answer
Explanation:
Why is flower is reproductive organ
Answer:
The primary purpose of a flower is reproduction. Since the flowers are the reproductive organs of plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma.
Matching: Brain Functions
Answer:
Movement: Parietal
Conscious thought: Cerebral Cortex
Personality: Frontal
Speech/language: Cerebrum
Vision: Occipital
Memory: Temporal
Explanation:
The frontal lobe is important for cognitive functions and control of voluntary movement or activity. The parietal lobe processes information about temperature, taste, touch and movement, while the occipital lobe is primarily responsible for vision. The temporal lobe processes memories, integrating them with sensations of taste, sound, sight and touch.
Sorry I took so long, kept second-guessing myself, apologies if my response is faulty or incorrect. Have a good day/night! :}
3
Which of the following helps a species adapt to a changing
environment?
A Having fewer offspring
B Having more offspring
C Decreasing genetic variation
D Increasing genetic variation
Answer:
D
Explanation:
I think it is D because if you increase your genetic variation then you will have more population of, well "yourself" - therefore making more chances to survive. although don't take what I say word-for-word because I'm just a noob at this stuff. if it pops up wrong, please notify me why it is wrong so that I can improve.
By increasing genetic variation will help a species adapt to a changing environment. Therefore, the correct option is D.
What is genetic variation?Genetic variation refers to the diversity of genetic information within a population or a species. It is the result of differences in the DNA sequences of individuals, which can arise through a variety of mechanisms such as mutations, genetic recombination, and gene flow.
It provides the raw material for natural selection to act upon. In a changing environment, individuals with certain traits may have a higher chance of survival and reproduction, and their traits may become more prevalent in the population over time.
Therefore, increasing genetic variation through mechanisms such as mutation, genetic recombination, and gene flow is critical for a species to adapt and survive in changing environments. Hence, the correct option is D.
Learn more about genetic variation, here:
https://brainly.com/question/848479
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Which mutation scenario will always lead to natural selection?(1 point) A. a mutation causes a specific advantage within the population B. a mutation causes an inactivated gene to be reactivated C. a mutation causes a specific variation within the population D. a mutation causes a gene to become inactivated
A mutation scenario that will lead to natural selection is one that causes a specific variation within the population. Thus, the correct option for this question is C.
What is Mutation?A mutation may be defined as a type of process that significantly involves sudden, stable, and inheritable changes in the genetic material of an organism. The organism that undergoes mutation is called a mutant. The agent of mutation is called mutagen.
According to the context of this question, the process of mutation never causes a positive influence on the organisms, but with respect to time organisms become adapted or habitual.
A Mutation may be random and spontaneous so, it does not always involve an inactivated gene being reactivated. It sometimes involves the introduction of a new gene that facilitates specific functions.
Therefore, a mutation causes a specific variation within the population is a mutation scenario that will lead to natural selection. Thus, the correct option for this question is C.
To learn more about Mutation, refer to the link:
https://brainly.com/question/17031191
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A photomicrograph of onion root tip cells during mitosis is shown below.
Staphoto.com/Alan John ander
Which phase of mitosis is occurring in the cell indicated by the arrow?
F Prophase
G Metaphase
H Anaphase
Talonha
What is the role of oxygen in cellular respiration?
It provides electrons for the electron transport chain.
It combines with carbon monoxide to form carbon dioxide.
It is needed for the production of light and heat.
It is the final electron acceptor for the electron transport chain.
Answer:
it combines with carbon monoxide to carbon dioxide
in the experiment it is important to make measurements that are both precise and accurate
which of these measurements of time is the most precise
5.1 second s
5.14 second s
5 second s.
Answer:
5 second s.
Explanation:
The base unit for time is the second (the other SI units are: metre for length, kilogram for mass, ampere for electric current, kelvin for temperature, candela for luminous intensity, and mole for the amount of substance). The second can be abbreviated as s or sec.
5.14 seconds
Explanation:
It gives a more specific time compared to 5.1 & 5
HELP! NO LINKS OR IRRELEVANT TOPICS! PLEASE DON'T WASTE MY POINTS!
What places in the world have animals in cages or in limited spaces? Name many please!
Answer:
South China and the U.K.
state two changes which take place in the flower after pollination
After pollination and fertilization following changes occur in a flower: (i) The petals, stamens, style and stigma of the flower fall off. (ii) Sepals dry up and hold the ovary. (iii) The ovules confined in the ovary develop into seeds.
1. What is the name of the body system responsible for breathing?
complete for brainlist
1. What is the name of the body system responsible
for breathing?
2. What are the parts of the respiratory system?
Your answer
3. What is the correct name for the windpipe?
Your answer
4. What do we Inhale and what do we Exhale?
Your answer
5. What happens in the Lungs?
Answer:
Explanation:
1)respiratory system
2)trachea, bronchi, bronchioles, alveoli, lungs, diaphragm
3)trachea
4)inhale oxygen and exhale carbon dioxide
5)gas exchange
Which organisms are producers?
Select all correct answers.
a. mushrooms
b. frog
c. grass
d. tree
Answer:
Grass and tree
A producer is a living thing that makes its own food. All food chains begin with producers.
( I am in LOVE with your pfp <3 )
Which of these objects is NOT found in the biosphere of the Earth?
1.bald eagle
2.great white shark
3.core of the earth
4.tropical rain forest
Answer:
core of the earth
Explanation:
the biosphere is the inside of earth
Can someone help me with this question?
Answer:
the answer is A
Explanation:
hope it helps!!!
Do the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell?
Answer:
Yes.
Explanation:
Yes, the positive charges on both calcium ions and sodium ions will responsible for the movement of these ions into or out of the cell because the membrane has negative charge which attract these positively charged calcium ions and potassium ions. These difference concentrations of sodium and potassium in the cell are due to the activity of cell membrane active transport system which moves sodium out of the cell and potassium into it.
Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
What do you mean by Diffusion?Diffusion may be defined as a process resulting from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
The membrane of a cell possesses a negative charge, so it attracts these positive charge ions and makes a concentration difference that leads to the process of active transport through which sodium moves out of the cell and potassium into it.
Therefore, Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
To learn more about Diffusion, refer to the link:
https://brainly.com/question/94094
Once Telophase is complete, the cell has become two identical
daughter cells
True
оr
False
Is it more likely that the T. Rex would have a 3-chambered heart or a 4-chambered heart and why?
Question 14 options:
A 3-chambered heart because the caiman also has a 3-chambered heart and the T. Rex is most closely related to the caiman.
A 3-chambered heart because the parrot has a 3-chambered heart and the parrot is most closely related to the T. Rex.
A 4-chambered heart because the caiman also has a 4-chambered heart and the T. Rex is most closely related to the caiman.
A 4-chambered heart because the parrot has a 4-chambered heart and the parrot is most closely related to the T. Rex.
boi what class are you in
Can anyone help me with these please
Answer:
6. Current = 8.33 Amps
7. Energy = 1200 Joules
Explanation:
Given the following data;
6. Power = 1000 Watts
Voltage = 120 Volts
To find the current flowing through;
Power = current * voltage
1000 = current * 120
Current = 1000/120
Current = 8.33 Amps
7. Power = 900 Watts
Time = 45 minutes to hours = 45/60 = 0.75 hours
To find the energy consumption;
Energy = power/time
Energy = 900/0.75
Energy = 1200 Joules
How are organelles in a plant cell similar to organs in the human body? How are they different? Explain your answer.
Answer: The main difference between organ and organelle is that organ is a large part of an organism, composed of tissues which perform similar functions whereas organelle is a specialized structure found inside cells, which carries out a specific life process. Organelles form cells.
If the pig is on its back, the one doing dissection would say the pig is on the
surface.
dosral
ventral
medial
lateral
Answer:
Ventral
Explanation:
This is because when you want to dissect a pig, it's back is place on a dissecting tray and it's belly side is up which is the ventral side. With the ventral side, dissection will be easy and the major organs and systems can be observed easily as they will be rightly viewed because they are obvious and rightly placed at belly side up.