1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fgiga [73]
2 years ago
9

Please answer these 4 questions!!!! All you have to do is fill in the blank with one of the words at the top!

Biology
1 answer:
maw [93]2 years ago
5 0
Answer:
Sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.
Mechanical Input enters the body using vibrations through the skin and ears.
Chemical input enters the body using molecules through the nose and mouth.
Electromagnetic input enters the body using waves through the eyes.
You might be interested in
3. What 3 ions play a crucial role in muscle contraction? (3 pts)
Alenkinab [10]

Answer:

(1) Calcium binds to troponin C, causing the conformational shift in tropomyosin that reveals myosin-binding sites on actin. (2) ATP then binds to myosin. (3) ATP is then hydrolyzed.

Explanation:

6 0
2 years ago
Which of the following best describes the difference between a plant cell and an animal cell?
Nadya [2.5K]
The answer to the question is b
7 0
2 years ago
The conserved residues in the hemoglobins and myoglobins include the ________ proximal and distal to the heme iron.
Ilya [14]

Answer:

Histidine

Explanation:

A heme group is a prosthetic group composed of a protoporphyrin ring and an iron (Fe) atom that binds to oxygen (O2) in hemoglobin and myoglobin. Hemoglobin (Hb) is a protein in red blood cells (erythrocytes) that carries oxygen from the lungs to the tissues, which is composed of four polypeptide chains, each with a heme group. Moreover, myoglobin is a monomeric protein located mainly in the muscles, which contains one heme group, being thus similar to hemoglobin monomers. The proximal and distal are evolutionarily conserved amino acid (histidine) residues whose names (proximal and distal) refer to their position with the iron (Fe) atom in the heme group. The proximal histidine connects the heme group with the proteins (either in monomeric myoglobin or in one subunit of Hb), whereas distal histidine contributes to stabilize these proteins while carrying O2.

6 0
2 years ago
The cell membrane similar to our integumentray system because
vlabodo [156]

Answer:

The integumentary system is similar to a cell membrane in that both structures create a protective barrier against the outside world. How is a nerve cell specialized? Neurons have specialize cell parts called dendrites and axons. Dendrites bring electrical signals to the cell body and axons take information away from the cell body.

Explanation:

please add me as brainliest......

8 0
2 years ago
22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit
mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square (X^2):

X^2  =  \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The X^2 is calculated thus:

Phenotype            O               E                             X^2

  1                          88            164.81            \frac{(88 - 164.81)^2}{164.81} = 35.80

  2                          62             54.94            \frac{(62 - 54.94)^2}{54.94} = 0.91

  3                           62             54.94              \frac{(62 - 54.94)^2}{54.94} = 0.91

  4                            81              18.31               \frac{(81 - 18.31)^2}{18.31} = 214.64

Total X^2 = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

X^2 tabulated  = 7.815

<em>The calculated </em>X^2<em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.        </em>

4 0
2 years ago
Other questions:
  • Which hormone causes the regrowth of the endometrial lining of the uterus?
    7·1 answer
  • During which process is the code on an mRNA strand read for a particular amino acid??
    15·1 answer
  • A delta at the mouth of a river is the direct result of
    12·1 answer
  • 8. 20,000 to 22,000 in humans<br>gene<br>autosome<br>sex chromosomes<br> xx​
    15·1 answer
  • What is the ratio of surface area to volume for a sphere with the following
    15·1 answer
  • Which grouping consists of connecting fibers that enable the cell to function as a unit?
    12·1 answer
  • Are the oldest fossils in top layer, middle layer, or bottom layer? Explain why that is?
    13·2 answers
  • In general, how do many human activities influence the carbon cycle?
    11·1 answer
  • PLEASE ANSWER FAST WILL MARK BRAINLYEST THIS IS DUR IN A HOUR
    13·2 answers
  • Which process is a physical change?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!