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lana66690 [7]
3 years ago
15

Many schools require applicants to take a test, such as the SAT or the ACT, as part of the admissions process. These tests deter

mine students’ knowledge in the subject areas of reading, writing, math, and science. They consist of a variety of question types, including multiple choice, short answer, and essay. This part of the central nervous system helps students remember the correct answers to the questions on these exams. A. hypothalamus B. hippocampus C. cerebellum D. brain stem
Biology
2 answers:
Ivenika [448]3 years ago
8 0
D. Brain stem, because the brain stem regulates memory processing
AlladinOne [14]3 years ago
8 0

Answer: B. Hippocampus

Explanation: Because hippocampus has a major role in learning and memory. It is a plastic and vulnerable structure that gets damaged by a variety of stimuli.

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zvonat [6]
I think its uhhhh A sjshshsjsgshs
3 0
2 years ago
Please help me !
Ahat [919]

The minimum pH is 4 whereas the maximum pH is 14. The optimum pH of enzyme Y is about 9.

The minimum pH is 4 whereas the maximum pH is 14. Within this range, Enzyme Y will work.

As shown in the graph, as the pH increases so does the rate of Enzyme action. The optimum pH of enzyme Y is about 9. The rate of enzyme action increase till a pH of 9, then it begins to decrease.

Find out more at: brainly.com/question/11422992

6 0
2 years ago
Two genes determining a trait In primroses, the dominant allele of gene K is necessary to synthesize blue flower pigment. Blue p
viktelen [127]

Answer:

The ratio of blue to white offspring in the progeny is 4 blue : 12 white.

Explanation:

<u>Available data:</u>

  • The dominant allele K is necessary to synthesize blue flower pigment
  • K is inhibited by the dominant allele D
  • Plants with the genotype K- D- will not produce pigment (and their flowers will be white)

Cross: testcross for (Kk Dd) plants

Parental)   KkDd     x     kkdd

Gametes) KD   kD   Kd   kd      

                kd   kd   kd   kd

Punnet square)        KD        Kd       kD       kd

                      kd     KkDd   Kkdd   kkDd   kkdd

                      kd     KkDd  Kkdd   kkDd   kkdd

                      kd     KkDd   Kkdd   kkDd   kkdd

                      kd     KkDd   Kkdd   kkDd   kkdd

  • Whenever D is present, it inhibits the expression of the K gene, so every plant with the dominant D allele will be white. This plants´ genotype is kkD- or K-D-.
  • Whenever D is absent and K is present, every plant with genotype K-dd will be blue.
  • The recessive form for K and D genes will express white-flowered plants, with genotype ddkk

F1) Progeny genotype: 4/16 KkDd, white-flowered plants

                                      4/16 Kkdd, blue-flowered plants

                                      4/16 kkDd, white-flowered plants

                                      4/16 kkdd, white-flowered plants

     The ratio of blue to white offspring in the progeny is 4 blue : 12 white.

     Blue-flowered plants: 4 Kkdd

     White-flowered plants: 4 KkDd + 4 kkDd + 4 kkdd

8 0
3 years ago
F the particles of a substance go from flowing around and over each other to locked in place. What phase change has occurred?
Law Incorporation [45]
The phase change is freezing
7 0
3 years ago
Which property of immunity exists when the plasma membrane of each T cell and B cell has receptors that will bind only one parti
Snezhnost [94]

Answer:

specificity

Explanation:

Adaptive immunity or specific immunity refers to the defense mechanisms of the body against specific invading agents. Adaptive immunity exhibits specificity and memory, the features not exhibited by innate immunity. The specificity of immune system serves the ability of the immune cells to identify specific pathogens or foreign molecules and produce an immune response against them.

It also involves distinguishing self from nonself molecules. The B cells and T cells have specific receptors that recognize and bind to specific antigens only and produce an immune response against them only while not responding to the other antigens.

4 0
2 years ago
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