Answer: b
Explanation:
1a)Which of the Pollen grain will most likely fertilise the egg cell in the ovule why?
a) pollen grain
B) stigma
write down a sentence why?
________________________________________________
Answer:pollen grain
Explanation:
Because it contains male gametophyte.
When a male with genotype Bb makes a sperm cell, it could have the ____ allele
1. XY
2. b
3. B or b
4. B
What is an genotype
Answer:
Genotype refers to genetic makeup of an organism.
The genetic constitution of a cell, an individual, or an organism. The genotype is distinct from the expressed features, or phenotype, of the cell, individual, or organism.
hope it helps
An area is currently a forest. What evidence would best indicate that this area was covered by water millions of years ago? *
1 point
An increase in rainfall in the forest over time
Fossils of fish discovered in rock below the forest
The presence of plants in the forest that need water to live
Insects in the forest that lay their eggs in the water
HELP ME PLZZZZ REALLY BE THE BEST
Answer:
Fossils
Explanation:
I had this question on my test and this was the answer
Answer:
Fossils
Explanation:
What would most likely happen if there were no condensation stage in the water cycle
Answer:
No precipitation.
Explanation:
if there were no condensation stage in the water cycle then there will be no precipitation and as a result the water cycle will stop. Condensation is the change of water from its gaseous state or water vapor into liquid water. This condensation process occurs in the upper atmosphere where the temperature is lower as compared to the earth surface so the water vapors turn into liquid state and will fall from the sky in the form of rainfall and snowfall so we can say that no condensation will leads to no precipitation.
During DNA replication, which of the following components is not required?
single-stranded
DNA primers
single-stranded RNA
primers
double-stranded
DNA primers
double-stranded RNA
primers
Answer:
im not sure, but i think its single-stranded :>
Explanation:
What are sister chromatids?
O the matched set of two chromosomes
O the protein structures moving the chromosomes
O the middle region of a replicated chromosome
O he two identical copies of one chromosome
Answer:
hi how are you doing today Jasmine
A researcher performs an experiment to test a hypothesis that involves the nutrients niacin and retinol. She feeds one group of laboratory rats a daily diet of precisely 125.6 units of niacin and 5,400 units of retinol. She uses two types of commercial pellet food. Food A contains 0.86 units of niacin and 30 units of retinol per gram. Food B contains 0.66 units of niacin and 40 units of retinol per gram. How many grams of each food does she feed this group of rats each day
Answer:
- 100 grams of food A (x)
- 60 grams of food B (y)
Explanation:
According to this question, the group of laboratory rats are being fed a daily diet of:
- 125.6 units of niacin and 5,400 units of retinol
Let x represent the number of grams needed for food A.
Let y represent the number of grams needed for food B.
This means that:
Food A: Niacin = 0.86x, Retinol = 30x
Food B: Niacin = 0.66y, Retinol = 40y
Since there are 125.6 units of niacin fed to the rats in total, then;
0.86x (A) + 0.66y (B) = 125.6
Since there are 5400 units of retinol fed to the rats in total, then;
30x (A) + 40y (B) = 5400
Solving these two equations simultaneously using elimination method:
0.86x (A) + 0.66y (B) = 125.6 ........(eqn 1)
30x (A) + 40y (B) = 5400 ............ (eqn 2)
Multiply eqn 1 by 30 and eqn 2 by 0.86
30 × 0.86x + 0.66y = 125.6
0.86 × 30x + 40y = 5400
25.8x + 19.8y = 3768 ............ (eqn 3)
25.8x + 34.4y = 4644 ........... (eqn 4)
Subtract eqn 3 from eqn 4
14.6y = 876
Divide both sides by 14.6
y = 876/14.6
y = 60
Substitute value for y (60) into eqn 2
30x + 40y = 5400
30x + 40(60) = 5400
30x + 2400 = 5400
30x = 5400 - 2400
30x = 3000
x = 3000/30
x = 100
Therefore, she feeds the group of rats 100grams of food A (x) and 60 grams of food B (y).
Sunlight is extremely important for the development and growth of coral.
This important factor of survival for the coral reef is-
Answer:
coral always grow in shallow water
Explain how the lymphatic system is adapted for the transportation of the lymph
Answer:
The lymph capillaries feed into larger lymph vessels. The lymph vessels that receive lymph fluid from many capillaries are called collecting vessels. Semilunar valves work together with smooth muscle contractions and skeletal muscle pressure to slowly push the lymph fluid forward while the valves prevent backflow.
During the water cycle, gravity assists with:
A. water vapor floating upwards
B. clouds becoming full of water molecules and more dense
C. precipitation
D. oceans
Answer:
B
Explanation:
Clouds are like fog and it absorbs the molecules and becomes a defense
Using the key from question 5, match the appropriate structures with the descriptions given below.
1. site of regulation of body temperature and water balance; most important autonomic center
2. site where medial fibers of the optic nerves cross
3. located in the midbrain; contains reflex centers for vision and hearing
4. responsible for regulation of posture and coordination of complex muscular movements
5. important synapse site for afferent fibers traveling to the sensory cortex
6. contains autonomic centers regulating blood pressure, heart rate, and respiratory rhythm, as well as coughing sneezing, and swallowing centers
7. large fiber tract connecting the cerebral hemispheres
8. relay stations for olfactory pathways
9. canal that connects the third and fourth ventricles
10. portion of the brain stem where the cerebral peduncles are located
Answer:
1. Hypothalamus
2. Optic chiasma
3. Corpora quadrigemina
4. Cerebellum
5. Thalamus
6. Medulla oblangata
7. Corpus Collosum
8. Fornix
9. Cerebral aqueduct
10. Midbrain
Explanation:
The hypothalamus is a small central region of the brain that regulates body temperature by responding to both internal and external stimuli and also produces the antidiuretic hormone (ADH) in order to trigger the reabsorption of water in the kidneys. The optic chiasma is a special sensory structure located along the visual pathway, directly in front of the hypothalamus, which is crucial to vision. The corpora quadrigemina, also known as quadruple bodies, are reflex centers located in the mesencephalon (midbrain) that regulate the position of the head and eyes in response to somatic stimuli. The cerebellum is a part of the brain located behind the top part of the brain stem which is involved in motor movement regulation and balance control. The thalamus (massa intermedia) is a paired gray matter structure found near the center of the brain that plays vital roles associated with sensory and motor functions of the brain. The medulla oblangata (medulla) is a structure located at the base of the brain involved in the regulation of sensory, motor, and mental functions (e.g., breathing, pain modulation, etc). The corpus callosum (the callosal commissure) is a bundle of nerve fibers that connects the two hemispheres of the brain. The fornix (agenesis of the corpus callosum) is a large interhemispheric commissure that connects neurons in the right and left hemispheres. The cerebral aqueduct (aqueduct of Sylvius) is a narrow channel that connects the third and fourth ventricles, thus allowing the cerebrospinal fluid to flow between the ventricles. Finally, the midbrain o 'mesencephalon' is a small region located in between the forebrain and hindbrain, which is involved in auditory and visual processing, eye movement and coordination.
Which cells in the body are targeted by HIV?
red blood cells
platelets
B cells
T cells
Think about it
1. Living organisms are composed mostly of four elements: ______________ , _______________, ____________, and _______________ .
Recycling in the Biosphere
2. Unlike the _____ -way flow of energy, matter is ____________ within and between ___________ .
3. What are biogeochemical cycles?
4. What three processes are involved in the cycling of matter?
A.
B.
C.
Answer: 1. Carbon, hydrogen, oxygen, and nitrogen, 2. high, measured speed. 3. Biogeochemical cycle, any of the natural pathways by which essential elements of living matter are circulated. The term biogeochemical is a contraction that refers to the consideration of the biological, geological, and chemical aspects of each cycle. 4. These three processes move water into the atmosphere. Evaporation occurs when water on Earth's surface changes to water vapor.
Explanation:
Rivers are more important to the water cycle than streams.
Please select the best answer from the choices provided
OT
OF
Answer:
this first option is the corect
This is a false statement. (:
¿De acuerdo a las preferencias alimenticias de los estudiantes, según la encuesta, qué tipo de hidratos de carbono no han sido preferidos en su alimentación? ¿Según las características de estos carbohidratos, qué beneficios provocan en la salud humana?
Explain E.O. Wilson's theory of Island Biogeography as it applies to environments other than islands physically
surrounded by water.
Answer:
The theory of E.O. Wilson's theory of Island Biogeography was originally developed as island biogeography, to explain species richness of actual islands, surrounded by water.
It proposes that the number of species found in an undisturbed environment is determined by immigration and emigration. According to him, the species richness will be the same if this island will have an equal number of the immigration and extinction or emigration of species.
Choose the correct ranking of relative electronegativities of the following parts of the ETC or molecules
that interact with the ETC from highest to lowest electronegativity.
A/Q> 0,> NADH > Cyt c, (ETC complex III) > FMN (ETC complex I)
B/0,> Q> NADH > Cyt c, (ETC complex III) > FMN (ETC complex I)
C/ FMN (ETC complex 1) > 0,>Q> NADH > Cyt c, (ETC complex III)
D/ NADH > FMN (ETC complex I) > Q>> Cyt c, (ETC complex III) > O2
E/ 0,> FMN (ETC complex 1) >Q> Cyt a (ETC complex III) > NADH
I’ll mark brainlist
Answer:
Opinions
Explanation:
Hope this helps
What happens at the dew point?
A. Water evaporates.
B. It rains.
C. Clouds are formed.
D. All of the above.
Answer:
Water droplets are formed.
Explanation:
Which of the following particles has no charge?
A. Ion
B. Proton
C. Neutron
D. Electron
What is the term for creating a new species
Answer:
Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.Explanation:
Where are areas of high rainfall most likely to occur?
A. Above clockwise moving gyres
B. Above cold surface waters
C. Above counter-clockwise moving gyres
D. Above warm surface waters
The areas of high rainfall most likely to occur in " Above warm surface waters".
What is rainfall ?The moist air would be forced to ascend whenever it encounters obstacles like mountains as well as rises as a result. Then condensation happens, and it starts to rain. Orographic rain and relief rain are two names for this sort of precipitation.
There are generally three types of rainfall occur:
reliefconvectional.frontal.Therefore, the correct answer will be option (D).
To know more about rainfall
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Which of these do not contain muscles? uterus blood vessels calf muscles eye pupils
Answer: blood vessels
Explanation:
Answer: Blood Vessels
Explanation:
what is the role of microorganisms in food preservation?
Answer:
Preservation usually involves preventing the growth of bacteria, fungi (such as yeasts), and other microorganisms, A number of methods of prevention can be used that can either totally prevent, delay, or otherwise reduce food spoilage.
Explanation:
What is affected by natural selection?
Answer:
variation
Explanation:
Through this process of natural selection, favorable traits are transmitted through generations. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species. It is one of the processes that drives evolution and helps to explain the diversity of life on Earth.
Which front is most likely to last for days?
A Stationary Front
B Warm Front
C Cold Front
D Occluded Front
Answer: Occluded front
Explanation:
please help i am giving away brainiliest
The structure that releases hormones is called a ___________.
A. gland
B. sponge
No dam links
Answer:
A. gland
Explanation:
A gland is an organ which produces and releases substances that perform a specific function in the body.
Explanation:
A. gland is the answer
have a nice day:)
How many chromosomes are in each of Chester's sperm cells?
Which structures of the digestive system, aside from the small intestine, release substances that help break down
food in the small intestine?
stomach and liver
liver and large intestine
pancreas and liver
large intestine and pancreas
Answer:
pancreas and liver
Hope this helps!
Answer:c
Explanation: